initial commit

master
Alessandro Mauri 3 years ago
commit 2957968afc
  1. 3
      .gitattributes
  2. 3
      .github/FUNDING.yml
  3. 3
      .gitignore
  4. 19
      LICENSE
  5. 41
      README.md
  6. 69
      data/core/command.lua
  7. 30
      data/core/commands/command.lua
  8. 101
      data/core/commands/core.lua
  9. 365
      data/core/commands/doc.lua
  10. 170
      data/core/commands/findreplace.lua
  11. 105
      data/core/commands/root.lua
  12. 256
      data/core/commandview.lua
  13. 140
      data/core/common.lua
  14. 20
      data/core/config.lua
  15. 80
      data/core/doc/highlighter.lua
  16. 393
      data/core/doc/init.lua
  17. 52
      data/core/doc/search.lua
  18. 136
      data/core/doc/translate.lua
  19. 383
      data/core/docview.lua
  20. 480
      data/core/init.lua
  21. 186
      data/core/keymap.lua
  22. 74
      data/core/logview.lua
  23. 58
      data/core/object.lua
  24. 504
      data/core/rootview.lua
  25. 141
      data/core/statusview.lua
  26. 26
      data/core/strict.lua
  27. 42
      data/core/style.lua
  28. 30
      data/core/syntax.lua
  29. 112
      data/core/tokenizer.lua
  30. 151
      data/core/view.lua
  31. BIN
      data/fonts/font.ttf
  32. BIN
      data/fonts/icons.ttf
  33. BIN
      data/fonts/monospace.ttf
  34. 284
      data/plugins/autocomplete.lua
  35. 61
      data/plugins/autoreload.lua
  36. 59
      data/plugins/language_c.lua
  37. 23
      data/plugins/language_css.lua
  38. 67
      data/plugins/language_js.lua
  39. 50
      data/plugins/language_lua.lua
  40. 17
      data/plugins/language_make.lua
  41. 21
      data/plugins/language_md.lua
  42. 55
      data/plugins/language_python.lua
  43. 21
      data/plugins/language_xml.lua
  44. 69
      data/plugins/macro.lua
  45. 271
      data/plugins/projectsearch.lua
  46. 30
      data/plugins/quote.lua
  47. 63
      data/plugins/reflow.lua
  48. 60
      data/plugins/tabularize.lua
  49. 197
      data/plugins/treeview.lua
  50. 36
      data/plugins/trimwhitespace.lua
  51. 28
      data/user/colors/fall.lua
  52. 28
      data/user/colors/gruvbox_dark.lua
  53. 28
      data/user/colors/summer.lua
  54. 14
      data/user/init.lua
  55. 146
      doc/usage.md
  56. BIN
      icon.ico
  57. 1369
      icon.inl
  58. 16
      makefile
  59. 16
      src/api/api.c
  60. 12
      src/api/api.h
  61. 112
      src/api/renderer.c
  62. 69
      src/api/renderer_font.c
  63. 402
      src/api/system.c
  64. 2
      src/lib/stb/stb_truetype.c
  65. 5011
      src/lib/stb/stb_truetype.h
  66. 123
      src/main.c
  67. 303
      src/rencache.c
  68. 16
      src/rencache.h
  69. 378
      src/renderer.c
  70. 33
      src/renderer.h

3
.gitattributes vendored

@ -0,0 +1,3 @@
winlib/* linguist-vendored
src/lib/* linguist-vendored
icon.inl linguist-vendored

@ -0,0 +1,3 @@
# These are supported funding model platforms
github: rxi

3
.gitignore vendored

@ -0,0 +1,3 @@
**/*.o
lite
TODO

@ -0,0 +1,19 @@
Copyright (c) 2020 rxi
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# lite
![screenshot](https://user-images.githubusercontent.com/3920290/81471642-6c165880-91ea-11ea-8cd1-fae7ae8f0bc4.png)
A lightweight text editor written in Lua
* **[Get lite](https://github.com/rxi/lite/releases/latest)** — Download
for Windows and Linux
* **[Get started](doc/usage.md)** — A quick overview on how to get started
* **[Get plugins](https://github.com/rxi/lite-plugins)** — Add additional
functionality
* **[Get color themes](https://github.com/rxi/lite-colors)** — Add additional colors
themes
## Overview
lite is a lightweight text editor written mostly in Lua — it aims to provide
something practical, pretty, *small* and fast, implemented as simply as
possible; easy to modify and extend, or to use without doing either.
## Customization
Additional functionality can be added through plugins which are available from
the [plugins repository](https://github.com/rxi/lite-plugins); additional color
themes can be found in the [colors repository](https://github.com/rxi/lite-colors).
The editor can be customized by making changes to the
[user module](data/user/init.lua).
## Building
You can build the project yourself on Linux using the `build.sh` script
or on Windows using the `build.bat` script *([MinGW](https://nuwen.net/mingw.html) is required)*.
Note that the project does not need to be rebuilt if you are only making changes
to the Lua portion of the code.
## Contributing
Any additional functionality that can be added through a plugin should be done
so as a plugin, after which a pull request to the
[plugins repository](https://github.com/rxi/lite-plugins) can be made. In hopes
of remaining lightweight, pull requests adding additional functionality to the
core will likely not be merged. Bug reports and bug fixes are welcome.
## License
This project is free software; you can redistribute it and/or modify it under
the terms of the MIT license. See [LICENSE](LICENSE) for details.

@ -0,0 +1,69 @@
local core = require "core"
local command = {}
command.map = {}
local always_true = function() return true end
function command.add(predicate, map)
predicate = predicate or always_true
if type(predicate) == "string" then
predicate = require(predicate)
end
if type(predicate) == "table" then
local class = predicate
predicate = function() return core.active_view:is(class) end
end
for name, fn in pairs(map) do
assert(not command.map[name], "command already exists: " .. name)
command.map[name] = { predicate = predicate, perform = fn }
end
end
local function capitalize_first(str)
return str:sub(1, 1):upper() .. str:sub(2)
end
function command.prettify_name(name)
return name:gsub(":", ": "):gsub("-", " "):gsub("%S+", capitalize_first)
end
function command.get_all_valid()
local res = {}
for name, cmd in pairs(command.map) do
if cmd.predicate() then
table.insert(res, name)
end
end
return res
end
local function perform(name)
local cmd = command.map[name]
if cmd and cmd.predicate() then
cmd.perform()
return true
end
return false
end
function command.perform(...)
local ok, res = core.try(perform, ...)
return not ok or res
end
function command.add_defaults()
local reg = { "core", "root", "command", "doc", "findreplace" }
for _, name in ipairs(reg) do
require("core.commands." .. name)
end
end
return command

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local core = require "core"
local command = require "core.command"
local CommandView = require "core.commandview"
local function has_commandview()
return core.active_view:is(CommandView)
end
command.add(has_commandview, {
["command:submit"] = function()
core.active_view:submit()
end,
["command:complete"] = function()
core.active_view:complete()
end,
["command:escape"] = function()
core.active_view:exit()
end,
["command:select-previous"] = function()
core.active_view:move_suggestion_idx(1)
end,
["command:select-next"] = function()
core.active_view:move_suggestion_idx(-1)
end,
})

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local core = require "core"
local common = require "core.common"
local command = require "core.command"
local keymap = require "core.keymap"
local LogView = require "core.logview"
local fullscreen = false
command.add(nil, {
["core:quit"] = function()
core.quit()
end,
["core:force-quit"] = function()
core.quit(true)
end,
["core:toggle-fullscreen"] = function()
fullscreen = not fullscreen
system.set_window_mode(fullscreen and "fullscreen" or "normal")
end,
["core:reload-module"] = function()
core.command_view:enter("Reload Module", function(text, item)
local text = item and item.text or text
core.reload_module(text)
core.log("Reloaded module %q", text)
end, function(text)
local items = {}
for name in pairs(package.loaded) do
table.insert(items, name)
end
return common.fuzzy_match(items, text)
end)
end,
["core:find-command"] = function()
local commands = command.get_all_valid()
core.command_view:enter("Do Command", function(text, item)
if item then
command.perform(item.command)
end
end, function(text)
local res = common.fuzzy_match(commands, text)
for i, name in ipairs(res) do
res[i] = {
text = command.prettify_name(name),
info = keymap.get_binding(name),
command = name,
}
end
return res
end)
end,
["core:find-file"] = function()
core.command_view:enter("Open File From Project", function(text, item)
text = item and item.text or text
core.root_view:open_doc(core.open_doc(text))
end, function(text)
local files = {}
for _, item in pairs(core.project_files) do
if item.type == "file" then
table.insert(files, item.filename)
end
end
return common.fuzzy_match(files, text)
end)
end,
["core:new-doc"] = function()
core.root_view:open_doc(core.open_doc())
end,
["core:open-file"] = function()
core.command_view:enter("Open File", function(text)
core.root_view:open_doc(core.open_doc(text))
end, common.path_suggest)
end,
["core:open-log"] = function()
local node = core.root_view:get_active_node()
node:add_view(LogView())
end,
["core:open-user-module"] = function()
core.root_view:open_doc(core.open_doc(EXEDIR .. "/data/user/init.lua"))
end,
["core:open-project-module"] = function()
local filename = ".lite_project.lua"
if system.get_file_info(filename) then
core.root_view:open_doc(core.open_doc(filename))
else
local doc = core.open_doc()
core.root_view:open_doc(doc)
doc:save(filename)
end
end,
})

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local core = require "core"
local command = require "core.command"
local common = require "core.common"
local config = require "core.config"
local translate = require "core.doc.translate"
local DocView = require "core.docview"
local function dv()
return core.active_view
end
local function doc()
return core.active_view.doc
end
local function get_indent_string()
if config.tab_type == "hard" then
return "\t"
end
return string.rep(" ", config.indent_size)
end
local function insert_at_start_of_selected_lines(text, skip_empty)
local line1, col1, line2, col2, swap = doc():get_selection(true)
for line = line1, line2 do
local line_text = doc().lines[line]
if (not skip_empty or line_text:find("%S")) then
doc():insert(line, 1, text)
end
end
doc():set_selection(line1, col1 + #text, line2, col2 + #text, swap)
end
local function remove_from_start_of_selected_lines(text, skip_empty)
local line1, col1, line2, col2, swap = doc():get_selection(true)
for line = line1, line2 do
local line_text = doc().lines[line]
if line_text:sub(1, #text) == text
and (not skip_empty or line_text:find("%S"))
then
doc():remove(line, 1, line, #text + 1)
end
end
doc():set_selection(line1, col1 - #text, line2, col2 - #text, swap)
end
local function append_line_if_last_line(line)
if line >= #doc().lines then
doc():insert(line, math.huge, "\n")
end
end
local function save(filename)
doc():save(filename)
core.log("Saved \"%s\"", doc().filename)
end
local commands = {
["doc:undo"] = function()
doc():undo()
end,
["doc:redo"] = function()
doc():redo()
end,
["doc:cut"] = function()
if doc():has_selection() then
local text = doc():get_text(doc():get_selection())
system.set_clipboard(text)
doc():delete_to(0)
end
end,
["doc:copy"] = function()
if doc():has_selection() then
local text = doc():get_text(doc():get_selection())
system.set_clipboard(text)
end
end,
["doc:paste"] = function()
doc():text_input(system.get_clipboard():gsub("\r", ""))
end,
["doc:newline"] = function()
local line, col = doc():get_selection()
local indent = doc().lines[line]:match("^[\t ]*")
if col <= #indent then
indent = indent:sub(#indent + 2 - col)
end
doc():text_input("\n" .. indent)
end,
["doc:newline-below"] = function()
local line = doc():get_selection()
local indent = doc().lines[line]:match("^[\t ]*")
doc():insert(line, math.huge, "\n" .. indent)
doc():set_selection(line + 1, math.huge)
end,
["doc:newline-above"] = function()
local line = doc():get_selection()
local indent = doc().lines[line]:match("^[\t ]*")
doc():insert(line, 1, indent .. "\n")
doc():set_selection(line, math.huge)
end,
["doc:delete"] = function()
local line, col = doc():get_selection()
if not doc():has_selection() and doc().lines[line]:find("^%s*$", col) then
doc():remove(line, col, line, math.huge)
end
doc():delete_to(translate.next_char)
end,
["doc:backspace"] = function()
local line, col = doc():get_selection()
if not doc():has_selection() then
local text = doc():get_text(line, 1, line, col)
if #text >= config.indent_size and text:find("^ *$") then
doc():delete_to(0, -config.indent_size)
return
end
end
doc():delete_to(translate.previous_char)
end,
["doc:select-all"] = function()
doc():set_selection(1, 1, math.huge, math.huge)
end,
["doc:select-none"] = function()
local line, col = doc():get_selection()
doc():set_selection(line, col)
end,
["doc:select-lines"] = function()
local line1, _, line2, _, swap = doc():get_selection(true)
append_line_if_last_line(line2)
doc():set_selection(line1, 1, line2 + 1, 1, swap)
end,
["doc:select-word"] = function()
local line1, col1 = doc():get_selection(true)
local line1, col1 = translate.start_of_word(doc(), line1, col1)
local line2, col2 = translate.end_of_word(doc(), line1, col1)
doc():set_selection(line2, col2, line1, col1)
end,
["doc:join-lines"] = function()
local line1, _, line2 = doc():get_selection(true)
if line1 == line2 then line2 = line2 + 1 end
local text = doc():get_text(line1, 1, line2, math.huge)
text = text:gsub("(.-)\n[\t ]*", function(x)
return x:find("^%s*$") and x or x .. " "
end)
doc():insert(line1, 1, text)
doc():remove(line1, #text + 1, line2, math.huge)
if doc():has_selection() then
doc():set_selection(line1, math.huge)
end
end,
["doc:indent"] = function()
local text = get_indent_string()
if doc():has_selection() then
insert_at_start_of_selected_lines(text)
else
doc():text_input(text)
end
end,
["doc:unindent"] = function()
local text = get_indent_string()
remove_from_start_of_selected_lines(text)
end,
["doc:duplicate-lines"] = function()
local line1, col1, line2, col2, swap = doc():get_selection(true)
append_line_if_last_line(line2)
local text = doc():get_text(line1, 1, line2 + 1, 1)
doc():insert(line2 + 1, 1, text)
local n = line2 - line1 + 1
doc():set_selection(line1 + n, col1, line2 + n, col2, swap)
end,
["doc:delete-lines"] = function()
local line1, col1, line2 = doc():get_selection(true)
append_line_if_last_line(line2)
doc():remove(line1, 1, line2 + 1, 1)
doc():set_selection(line1, col1)
end,
["doc:move-lines-up"] = function()
local line1, col1, line2, col2, swap = doc():get_selection(true)
append_line_if_last_line(line2)
if line1 > 1 then
local text = doc().lines[line1 - 1]
doc():insert(line2 + 1, 1, text)
doc():remove(line1 - 1, 1, line1, 1)
doc():set_selection(line1 - 1, col1, line2 - 1, col2, swap)
end
end,
["doc:move-lines-down"] = function()
local line1, col1, line2, col2, swap = doc():get_selection(true)
append_line_if_last_line(line2 + 1)
if line2 < #doc().lines then
local text = doc().lines[line2 + 1]
doc():remove(line2 + 1, 1, line2 + 2, 1)
doc():insert(line1, 1, text)
doc():set_selection(line1 + 1, col1, line2 + 1, col2, swap)
end
end,
["doc:toggle-line-comments"] = function()
local comment = doc().syntax.comment
if not comment then return end
local comment_text = comment .. " "
local line1, _, line2 = doc():get_selection(true)
local uncomment = true
for line = line1, line2 do
local text = doc().lines[line]
if text:find("%S") and text:find(comment_text, 1, true) ~= 1 then
uncomment = false
end
end
if uncomment then
remove_from_start_of_selected_lines(comment_text, true)
else
insert_at_start_of_selected_lines(comment_text, true)
end
end,
["doc:upper-case"] = function()
doc():replace(string.upper)
end,
["doc:lower-case"] = function()
doc():replace(string.lower)
end,
["doc:go-to-line"] = function()
local dv = dv()
local items
local function init_items()
if items then return end
items = {}
local mt = { __tostring = function(x) return x.text end }
for i, line in ipairs(dv.doc.lines) do
local item = { text = line:sub(1, -2), line = i, info = "line: " .. i }
table.insert(items, setmetatable(item, mt))
end
end
core.command_view:enter("Go To Line", function(text, item)
local line = item and item.line or tonumber(text)
if not line then
core.error("Invalid line number or unmatched string")
return
end
dv.doc:set_selection(line, 1 )
dv:scroll_to_line(line, true)
end, function(text)
if not text:find("^%d*$") then
init_items()
return common.fuzzy_match(items, text)
end
end)
end,
["doc:toggle-line-ending"] = function()
doc().crlf = not doc().crlf
end,
["doc:save-as"] = function()
if doc().filename then
core.command_view:set_text(doc().filename)
end
core.command_view:enter("Save As", function(filename)
save(filename)
end, common.path_suggest)
end,
["doc:save"] = function()
if doc().filename then
save()
else
command.perform("doc:save-as")
end
end,
["doc:rename"] = function()
local old_filename = doc().filename
if not old_filename then
core.error("Cannot rename unsaved doc")
return
end
core.command_view:set_text(old_filename)
core.command_view:enter("Rename", function(filename)
doc():save(filename)
core.log("Renamed \"%s\" to \"%s\"", old_filename, filename)
if filename ~= old_filename then
os.remove(old_filename)
end
end, common.path_suggest)
end,
}
local translations = {
["previous-char"] = translate.previous_char,
["next-char"] = translate.next_char,
["previous-word-start"] = translate.previous_word_start,
["next-word-end"] = translate.next_word_end,
["previous-block-start"] = translate.previous_block_start,
["next-block-end"] = translate.next_block_end,
["start-of-doc"] = translate.start_of_doc,
["end-of-doc"] = translate.end_of_doc,
["start-of-line"] = translate.start_of_line,
["end-of-line"] = translate.end_of_line,
["start-of-word"] = translate.start_of_word,
["end-of-word"] = translate.end_of_word,
["previous-line"] = DocView.translate.previous_line,
["next-line"] = DocView.translate.next_line,
["previous-page"] = DocView.translate.previous_page,
["next-page"] = DocView.translate.next_page,
}
for name, fn in pairs(translations) do
commands["doc:move-to-" .. name] = function() doc():move_to(fn, dv()) end
commands["doc:select-to-" .. name] = function() doc():select_to(fn, dv()) end
commands["doc:delete-to-" .. name] = function() doc():delete_to(fn, dv()) end
end
commands["doc:move-to-previous-char"] = function()
if doc():has_selection() then
local line, col = doc():get_selection(true)
doc():set_selection(line, col)
else
doc():move_to(translate.previous_char)
end
end
commands["doc:move-to-next-char"] = function()
if doc():has_selection() then
local _, _, line, col = doc():get_selection(true)
doc():set_selection(line, col)
else
doc():move_to(translate.next_char)
end
end
command.add("core.docview", commands)

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local core = require "core"
local command = require "core.command"
local config = require "core.config"
local search = require "core.doc.search"
local DocView = require "core.docview"
local max_previous_finds = 50
local function doc()
return core.active_view.doc
end
local previous_finds
local last_doc
local last_fn, last_text
local function push_previous_find(doc, sel)
if last_doc ~= doc then
last_doc = doc
previous_finds = {}
end
if #previous_finds >= max_previous_finds then
table.remove(previous_finds, 1)
end
table.insert(previous_finds, sel or { doc:get_selection() })
end
local function find(label, search_fn)
local dv = core.active_view
local sel = { dv.doc:get_selection() }
local text = dv.doc:get_text(table.unpack(sel))
local found = false
core.command_view:set_text(text, true)
core.command_view:enter(label, function(text)
if found then
last_fn, last_text = search_fn, text
previous_finds = {}
push_previous_find(dv.doc, sel)
else
core.error("Couldn't find %q", text)
dv.doc:set_selection(table.unpack(sel))
dv:scroll_to_make_visible(sel[1], sel[2])
end
end, function(text)
local ok, line1, col1, line2, col2 = pcall(search_fn, dv.doc, sel[1], sel[2], text)
if ok and line1 and text ~= "" then
dv.doc:set_selection(line2, col2, line1, col1)
dv:scroll_to_line(line2, true)
found = true
else
dv.doc:set_selection(table.unpack(sel))
found = false
end
end, function(explicit)
if explicit then
dv.doc:set_selection(table.unpack(sel))
dv:scroll_to_make_visible(sel[1], sel[2])
end
end)
end
local function replace(kind, default, fn)
core.command_view:set_text(default, true)
core.command_view:enter("Find To Replace " .. kind, function(old)
core.command_view:set_text(old, true)
local s = string.format("Replace %s %q With", kind, old)
core.command_view:enter(s, function(new)
local n = doc():replace(function(text)
return fn(text, old, new)
end)
core.log("Replaced %d instance(s) of %s %q with %q", n, kind, old, new)
end)
end)
end
local function has_selection()
return core.active_view:is(DocView)
and core.active_view.doc:has_selection()
end
command.add(has_selection, {
["find-replace:select-next"] = function()
local l1, c1, l2, c2 = doc():get_selection(true)
local text = doc():get_text(l1, c1, l2, c2)
local l1, c1, l2, c2 = search.find(doc(), l2, c2, text, { wrap = true })
if l2 then doc():set_selection(l2, c2, l1, c1) end
end
})
command.add("core.docview", {
["find-replace:find"] = function()
find("Find Text", function(doc, line, col, text)
local opt = { wrap = true, no_case = true }
return search.find(doc, line, col, text, opt)
end)
end,
["find-replace:find-pattern"] = function()
find("Find Text Pattern", function(doc, line, col, text)
local opt = { wrap = true, no_case = true, pattern = true }
return search.find(doc, line, col, text, opt)
end)
end,
["find-replace:repeat-find"] = function()
if not last_fn then
core.error("No find to continue from")
else
local line, col = doc():get_selection()
local line1, col1, line2, col2 = last_fn(doc(), line, col, last_text)
if line1 then
push_previous_find(doc())
doc():set_selection(line2, col2, line1, col1)
core.active_view:scroll_to_line(line2, true)
end
end
end,
["find-replace:previous-find"] = function()
local sel = table.remove(previous_finds)
if not sel or doc() ~= last_doc then
core.error("No previous finds")
return
end
doc():set_selection(table.unpack(sel))
core.active_view:scroll_to_line(sel[3], true)
end,
["find-replace:replace"] = function()
replace("Text", "", function(text, old, new)
return text:gsub(old:gsub("%W", "%%%1"), new:gsub("%%", "%%%%"), nil)
end)
end,
["find-replace:replace-pattern"] = function()
replace("Pattern", "", function(text, old, new)
return text:gsub(old, new)
end)
end,
["find-replace:replace-symbol"] = function()
local first = ""
if doc():has_selection() then
local text = doc():get_text(doc():get_selection())
first = text:match(config.symbol_pattern) or ""
end
replace("Symbol", first, function(text, old, new)
local n = 0
local res = text:gsub(config.symbol_pattern, function(sym)
if old == sym then
n = n + 1
return new
end
end)
return res, n
end)
end,
})

@ -0,0 +1,105 @@
local core = require "core"
local style = require "core.style"
local DocView = require "core.docview"
local command = require "core.command"
local common = require "core.common"
local t = {
["root:close"] = function()
local node = core.root_view:get_active_node()
node:close_active_view(core.root_view.root_node)
end,
["root:switch-to-previous-tab"] = function()
local node = core.root_view:get_active_node()
local idx = node:get_view_idx(core.active_view)
idx = idx - 1
if idx < 1 then idx = #node.views end
node:set_active_view(node.views[idx])
end,
["root:switch-to-next-tab"] = function()
local node = core.root_view:get_active_node()
local idx = node:get_view_idx(core.active_view)
idx = idx + 1
if idx > #node.views then idx = 1 end
node:set_active_view(node.views[idx])
end,
["root:move-tab-left"] = function()
local node = core.root_view:get_active_node()
local idx = node:get_view_idx(core.active_view)
if idx > 1 then
table.remove(node.views, idx)
table.insert(node.views, idx - 1, core.active_view)
end
end,
["root:move-tab-right"] = function()
local node = core.root_view:get_active_node()
local idx = node:get_view_idx(core.active_view)
if idx < #node.views then
table.remove(node.views, idx)
table.insert(node.views, idx + 1, core.active_view)
end
end,
["root:shrink"] = function()
local node = core.root_view:get_active_node()
local parent = node:get_parent_node(core.root_view.root_node)
local n = (parent.a == node) and -0.1 or 0.1
parent.divider = common.clamp(parent.divider + n, 0.1, 0.9)
end,
["root:grow"] = function()
local node = core.root_view:get_active_node()
local parent = node:get_parent_node(core.root_view.root_node)
local n = (parent.a == node) and 0.1 or -0.1
parent.divider = common.clamp(parent.divider + n, 0.1, 0.9)
end,
}
for i = 1, 9 do
t["root:switch-to-tab-" .. i] = function()
local node = core.root_view:get_active_node()
local view = node.views[i]
if view then
node:set_active_view(view)
end
end
end
for _, dir in ipairs { "left", "right", "up", "down" } do
t["root:split-" .. dir] = function()
local node = core.root_view:get_active_node()
local av = node.active_view
node:split(dir)
if av:is(DocView) then
core.root_view:open_doc(av.doc)
end
end
t["root:switch-to-" .. dir] = function()
local node = core.root_view:get_active_node()
local x, y
if dir == "left" or dir == "right" then
y = node.position.y + node.size.y / 2
x = node.position.x + (dir == "left" and -1 or node.size.x + style.divider_size)
else
x = node.position.x + node.size.x / 2
y = node.position.y + (dir == "up" and -1 or node.size.y + style.divider_size)
end
local node = core.root_view.root_node:get_child_overlapping_point(x, y)
if not node:get_locked_size() then
core.set_active_view(node.active_view)
end
end
end
command.add(function()
local node = core.root_view:get_active_node()
return not node:get_locked_size()
end, t)

@ -0,0 +1,256 @@
local core = require "core"
local common = require "core.common"
local style = require "core.style"
local Doc = require "core.doc"
local DocView = require "core.docview"
local View = require "core.view"
local SingleLineDoc = Doc:extend()
function SingleLineDoc:insert(line, col, text)
SingleLineDoc.super.insert(self, line, col, text:gsub("\n", ""))
end
local CommandView = DocView:extend()
local max_suggestions = 10
local noop = function() end
local default_state = {
submit = noop,
suggest = noop,
cancel = noop,
}
function CommandView:new()
CommandView.super.new(self, SingleLineDoc())
self.suggestion_idx = 1
self.suggestions = {}
self.suggestions_height = 0
self.last_change_id = 0
self.gutter_width = 0
self.gutter_text_brightness = 0
self.selection_offset = 0
self.state = default_state
self.font = "font"
self.size.y = 0
self.label = ""
end
function CommandView:get_name()
return View.get_name(self)
end
function CommandView:get_line_screen_position()
local x = CommandView.super.get_line_screen_position(self, 1)
local _, y = self:get_content_offset()
local lh = self:get_line_height()
return x, y + (self.size.y - lh) / 2
end
function CommandView:get_scrollable_size()
return 0
end
function CommandView:scroll_to_make_visible()
-- no-op function to disable this functionality
end
function CommandView:get_text()
return self.doc:get_text(1, 1, 1, math.huge)
end
function CommandView:set_text(text, select)
self.doc:remove(1, 1, math.huge, math.huge)
self.doc:text_input(text)
if select then
self.doc:set_selection(math.huge, math.huge, 1, 1)
end
end
function CommandView:move_suggestion_idx(dir)
local n = self.suggestion_idx + dir
self.suggestion_idx = common.clamp(n, 1, #self.suggestions)
self:complete()
self.last_change_id = self.doc:get_change_id()
end
function CommandView:complete()
if #self.suggestions > 0 then
self:set_text(self.suggestions[self.suggestion_idx].text)
end
end
function CommandView:submit()
local suggestion = self.suggestions[self.suggestion_idx]
local text = self:get_text()
local submit = self.state.submit
self:exit(true)
submit(text, suggestion)
end
function CommandView:enter(text, submit, suggest, cancel)
if self.state ~= default_state then
return
end
self.state = {
submit = submit or noop,
suggest = suggest or noop,
cancel = cancel or noop,
}
core.set_active_view(self)
self:update_suggestions()
self.gutter_text_brightness = 100
self.label = text .. ": "
end
function CommandView:exit(submitted, inexplicit)
if core.active_view == self then
core.set_active_view(core.last_active_view)
end
local cancel = self.state.cancel
self.state = default_state
self.doc:reset()
self.suggestions = {}
if not submitted then cancel(not inexplicit) end
end
function CommandView:get_gutter_width()
return self.gutter_width
end
function CommandView:get_suggestion_line_height()
return self:get_font():get_height() + style.padding.y
end
function CommandView:update_suggestions()
local t = self.state.suggest(self:get_text()) or {}
local res = {}
for i, item in ipairs(t) do
if i == max_suggestions then
break
end
if type(item) == "string" then
item = { text = item }
end
res[i] = item
end
self.suggestions = res
self.suggestion_idx = 1
end
function CommandView:update()
CommandView.super.update(self)
if core.active_view ~= self and self.state ~= default_state then
self:exit(false, true)
end
-- update suggestions if text has changed
if self.last_change_id ~= self.doc:get_change_id() then
self:update_suggestions()
self.last_change_id = self.doc:get_change_id()
end
-- update gutter text color brightness
self:move_towards("gutter_text_brightness", 0, 0.1)
-- update gutter width
local dest = self:get_font():get_width(self.label) + style.padding.x
if self.size.y <= 0 then
self.gutter_width = dest
else
self:move_towards("gutter_width", dest)
end
-- update suggestions box height
local lh = self:get_suggestion_line_height()
local dest = #self.suggestions * lh
self:move_towards("suggestions_height", dest)
-- update suggestion cursor offset
local dest = self.suggestion_idx * self:get_suggestion_line_height()
self:move_towards("selection_offset", dest)
-- update size based on whether this is the active_view
local dest = 0
if self == core.active_view then
dest = style.font:get_height() + style.padding.y * 2
end
self:move_towards(self.size, "y", dest)
end
function CommandView:draw_line_highlight()
-- no-op function to disable this functionality
end
function CommandView:draw_line_gutter(idx, x, y)
local yoffset = self:get_line_text_y_offset()
local pos = self.position
local color = common.lerp(style.text, style.accent, self.gutter_text_brightness / 100)
core.push_clip_rect(pos.x, pos.y, self:get_gutter_width(), self.size.y)
x = x + style.padding.x
renderer.draw_text(self:get_font(), self.label, x, y + yoffset, color)
core.pop_clip_rect()
end
local function draw_suggestions_box(self)
local lh = self:get_suggestion_line_height()
local dh = style.divider_size
local x, _ = self:get_line_screen_position()
local h = math.ceil(self.suggestions_height)
local rx, ry, rw, rh = self.position.x, self.position.y - h - dh, self.size.x, h
-- draw suggestions background
if #self.suggestions > 0 then
renderer.draw_rect(rx, ry, rw, rh, style.background3)
renderer.draw_rect(rx, ry - dh, rw, dh, style.divider)
local y = self.position.y - self.selection_offset - dh
renderer.draw_rect(rx, y, rw, lh, style.line_highlight)
end
-- draw suggestion text
core.push_clip_rect(rx, ry, rw, rh)
for i, item in ipairs(self.suggestions) do
local color = (i == self.suggestion_idx) and style.accent or style.text
local y = self.position.y - i * lh - dh
common.draw_text(self:get_font(), color, item.text, nil, x, y, 0, lh)
if item.info then
local w = self.size.x - x - style.padding.x
common.draw_text(self:get_font(), style.dim, item.info, "right", x, y, w, lh)
end
end
core.pop_clip_rect()
end
function CommandView:draw()
CommandView.super.draw(self)
core.root_view:defer_draw(draw_suggestions_box, self)
end
return CommandView

@ -0,0 +1,140 @@
local common = {}
function common.is_utf8_cont(char)
local byte = char:byte()
return byte >= 0x80 and byte < 0xc0
end
function common.utf8_chars(text)
return text:gmatch("[\0-\x7f\xc2-\xf4][\x80-\xbf]*")
end
function common.clamp(n, lo, hi)
return math.max(math.min(n, hi), lo)
end
function common.round(n)
return n >= 0 and math.floor(n + 0.5) or math.ceil(n - 0.5)
end
function common.lerp(a, b, t)
if type(a) ~= "table" then
return a + (b - a) * t
end
local res = {}
for k, v in pairs(b) do
res[k] = common.lerp(a[k], v, t)
end
return res
end
function common.color(str)
local r, g, b, a = str:match("#(%x%x)(%x%x)(%x%x)")
if r then
r = tonumber(r, 16)
g = tonumber(g, 16)
b = tonumber(b, 16)
a = 1
elseif str:match("rgba?%s*%([%d%s%.,]+%)") then
local f = str:gmatch("[%d.]+")
r = (f() or 0)
g = (f() or 0)
b = (f() or 0)
a = f() or 1
else
error(string.format("bad color string '%s'", str))
end
return r, g, b, a * 0xff
end
local function compare_score(a, b)
return a.score > b.score
end
local function fuzzy_match_items(items, needle)
local res = {}
for _, item in ipairs(items) do
local score = system.fuzzy_match(tostring(item), needle)
if score then
table.insert(res, { text = item, score = score })
end
end
table.sort(res, compare_score)
for i, item in ipairs(res) do
res[i] = item.text
end
return res
end
function common.fuzzy_match(haystack, needle)
if type(haystack) == "table" then
return fuzzy_match_items(haystack, needle)
end
return system.fuzzy_match(haystack, needle)
end
function common.path_suggest(text)
local path, name = text:match("^(.-)([^/\\]*)$")
local files = system.list_dir(path == "" and "." or path) or {}
local res = {}
for _, file in ipairs(files) do
file = path .. file
local info = system.get_file_info(file)
if info then
if info.type == "dir" then
file = file .. PATHSEP
end
if file:lower():find(text:lower(), nil, true) == 1 then
table.insert(res, file)
end
end
end
return res
end
function common.match_pattern(text, pattern, ...)
if type(pattern) == "string" then
return text:find(pattern, ...)
end
for _, p in ipairs(pattern) do
local s, e = common.match_pattern(text, p, ...)
if s then return s, e end
end
return false
end
function common.draw_text(font, color, text, align, x,y,w,h)
local tw, th = font:get_width(text), font:get_height(text)
if align == "center" then
x = x + (w - tw) / 2
elseif align == "right" then
x = x + (w - tw)
end
y = common.round(y + (h - th) / 2)
return renderer.draw_text(font, text, x, y, color), y + th
end
function common.bench(name, fn, ...)
local start = system.get_time()
local res = fn(...)
local t = system.get_time() - start
local ms = t * 1000
local per = (t / (1 / 60)) * 100
print(string.format("*** %-16s : %8.3fms %6.2f%%", name, ms, per))
return res
end
return common

@ -0,0 +1,20 @@
local config = {}
config.project_scan_rate = 5
config.fps = 60
config.max_log_items = 80
config.message_timeout = 3
config.mouse_wheel_scroll = 50 * SCALE
config.file_size_limit = 10
config.ignore_files = "^%."
config.symbol_pattern = "[%a_][%w_]*"
config.non_word_chars = " \t\n/\\()\"':,.;<>~!@#$%^&*|+=[]{}`?-"
config.undo_merge_timeout = 0.3
config.max_undos = 10000
config.highlight_current_line = true
config.line_height = 1.2
config.indent_size = 8
config.tab_type = "hard"
config.line_limit = 80
return config

@ -0,0 +1,80 @@
local core = require "core"
local config = require "core.config"
local tokenizer = require "core.tokenizer"
local Object = require "core.object"
local Highlighter = Object:extend()
function Highlighter:new(doc)
self.doc = doc
self:reset()
-- init incremental syntax highlighting
core.add_thread(function()
while true do
if self.first_invalid_line > self.max_wanted_line then
self.max_wanted_line = 0
coroutine.yield(1 / config.fps)
else
local max = math.min(self.first_invalid_line + 40, self.max_wanted_line)
for i = self.first_invalid_line, max do
local state = (i > 1) and self.lines[i - 1].state
local line = self.lines[i]
if not (line and line.init_state == state) then
self.lines[i] = self:tokenize_line(i, state)
end
end
self.first_invalid_line = max + 1
core.redraw = true
coroutine.yield()
end
end
end, self)
end
function Highlighter:reset()
self.lines = {}
self.first_invalid_line = 1
self.max_wanted_line = 0
end
function Highlighter:invalidate(idx)
self.first_invalid_line = math.min(self.first_invalid_line, idx)
self.max_wanted_line = math.min(self.max_wanted_line, #self.doc.lines)
end
function Highlighter:tokenize_line(idx, state)
local res = {}
res.init_state = state
res.text = self.doc.lines[idx]
res.tokens, res.state = tokenizer.tokenize(self.doc.syntax, res.text, state)
return res
end
function Highlighter:get_line(idx)
local line = self.lines[idx]
if not line or line.text ~= self.doc.lines[idx] then
local prev = self.lines[idx - 1]
line = self:tokenize_line(idx, prev and prev.state)
self.lines[idx] = line
end
self.max_wanted_line = math.max(self.max_wanted_line, idx)
return line
end
function Highlighter:each_token(idx)
return tokenizer.each_token(self:get_line(idx).tokens)
end
return Highlighter

@ -0,0 +1,393 @@
local Object = require "core.object"
local Highlighter = require "core.doc.highlighter"
local syntax = require "core.syntax"
local config = require "core.config"
local common = require "core.common"
local Doc = Object:extend()
local function split_lines(text)
local res = {}
for line in (text .. "\n"):gmatch("(.-)\n") do
table.insert(res, line)
end
return res
end
local function splice(t, at, remove, insert)
insert = insert or {}
local offset = #insert - remove
local old_len = #t
if offset < 0 then
for i = at - offset, old_len - offset do
t[i + offset] = t[i]
end
elseif offset > 0 then
for i = old_len, at, -1 do
t[i + offset] = t[i]
end
end
for i, item in ipairs(insert) do
t[at + i - 1] = item
end
end
function Doc:new(filename)
self:reset()
if filename then
self:load(filename)
end
end
function Doc:reset()
self.lines = { "\n" }
self.selection = { a = { line=1, col=1 }, b = { line=1, col=1 } }
self.undo_stack = { idx = 1 }
self.redo_stack = { idx = 1 }
self.clean_change_id = 1
self.highlighter = Highlighter(self)
self:reset_syntax()
end
function Doc:reset_syntax()
local header = self:get_text(1, 1, self:position_offset(1, 1, 128))
local syn = syntax.get(self.filename or "", header)
if self.syntax ~= syn then
self.syntax = syn
self.highlighter:reset()
end
end
function Doc:load(filename)
local fp = assert( io.open(filename, "rb") )
self:reset()
self.filename = filename
self.lines = {}
for line in fp:lines() do
if line:byte(-1) == 13 then
line = line:sub(1, -2)
self.crlf = true
end
table.insert(self.lines, line .. "\n")
end
if #self.lines == 0 then
table.insert(self.lines, "\n")
end
fp:close()
self:reset_syntax()
end
function Doc:save(filename)
filename = filename or assert(self.filename, "no filename set to default to")
local fp = assert( io.open(filename, "wb") )
for _, line in ipairs(self.lines) do
if self.crlf then line = line:gsub("\n", "\r\n") end
fp:write(line)
end
fp:close()
self.filename = filename or self.filename
self:reset_syntax()
self:clean()
end
function Doc:get_name()
return self.filename or "unsaved"
end
function Doc:is_dirty()
return self.clean_change_id ~= self:get_change_id()
end
function Doc:clean()
self.clean_change_id = self:get_change_id()
end
function Doc:get_change_id()
return self.undo_stack.idx
end
function Doc:set_selection(line1, col1, line2, col2, swap)
assert(not line2 == not col2, "expected 2 or 4 arguments")
if swap then line1, col1, line2, col2 = line2, col2, line1, col1 end
line1, col1 = self:sanitize_position(line1, col1)
line2, col2 = self:sanitize_position(line2 or line1, col2 or col1)
self.selection.a.line, self.selection.a.col = line1, col1
self.selection.b.line, self.selection.b.col = line2, col2
end
local function sort_positions(line1, col1, line2, col2)
if line1 > line2
or line1 == line2 and col1 > col2 then
return line2, col2, line1, col1, true
end
return line1, col1, line2, col2, false
end
function Doc:get_selection(sort)
local a, b = self.selection.a, self.selection.b
if sort then
return sort_positions(a.line, a.col, b.line, b.col)
end
return a.line, a.col, b.line, b.col
end
function Doc:has_selection()
local a, b = self.selection.a, self.selection.b
return not (a.line == b.line and a.col == b.col)
end
function Doc:sanitize_selection()
self:set_selection(self:get_selection())
end
function Doc:sanitize_position(line, col)
line = common.clamp(line, 1, #self.lines)
col = common.clamp(col, 1, #self.lines[line])
return line, col
end
local function position_offset_func(self, line, col, fn, ...)
line, col = self:sanitize_position(line, col)
return fn(self, line, col, ...)
end
local function position_offset_byte(self, line, col, offset)
line, col = self:sanitize_position(line, col)
col = col + offset
while line > 1 and col < 1 do
line = line - 1
col = col + #self.lines[line]
end
while line < #self.lines and col > #self.lines[line] do
col = col - #self.lines[line]
line = line + 1
end
return self:sanitize_position(line, col)
end
local function position_offset_linecol(self, line, col, lineoffset, coloffset)
return self:sanitize_position(line + lineoffset, col + coloffset)
end
function Doc:position_offset(line, col, ...)
if type(...) ~= "number" then
return position_offset_func(self, line, col, ...)
elseif select("#", ...) == 1 then
return position_offset_byte(self, line, col, ...)
elseif select("#", ...) == 2 then
return position_offset_linecol(self, line, col, ...)
else
error("bad number of arguments")
end
end
function Doc:get_text(line1, col1, line2, col2)
line1, col1 = self:sanitize_position(line1, col1)
line2, col2 = self:sanitize_position(line2, col2)
line1, col1, line2, col2 = sort_positions(line1, col1, line2, col2)
if line1 == line2 then
return self.lines[line1]:sub(col1, col2 - 1)
end
local lines = { self.lines[line1]:sub(col1) }
for i = line1 + 1, line2 - 1 do
table.insert(lines, self.lines[i])
end
table.insert(lines, self.lines[line2]:sub(1, col2 - 1))
return table.concat(lines)
end
function Doc:get_char(line, col)
line, col = self:sanitize_position(line, col)
return self.lines[line]:sub(col, col)
end
local function push_undo(undo_stack, time, type, ...)
undo_stack[undo_stack.idx] = { type = type, time = time, ... }
undo_stack[undo_stack.idx - config.max_undos] = nil
undo_stack.idx = undo_stack.idx + 1
end
local function pop_undo(self, undo_stack, redo_stack)
-- pop command
local cmd = undo_stack[undo_stack.idx - 1]
if not cmd then return end
undo_stack.idx = undo_stack.idx - 1
-- handle command
if cmd.type == "insert" then
local line, col, text = table.unpack(cmd)
self:raw_insert(line, col, text, redo_stack, cmd.time)
elseif cmd.type == "remove" then
local line1, col1, line2, col2 = table.unpack(cmd)
self:raw_remove(line1, col1, line2, col2, redo_stack, cmd.time)
elseif cmd.type == "selection" then
self.selection.a.line, self.selection.a.col = cmd[1], cmd[2]
self.selection.b.line, self.selection.b.col = cmd[3], cmd[4]
end
-- if next undo command is within the merge timeout then treat as a single
-- command and continue to execute it
local next = undo_stack[undo_stack.idx - 1]
if next and math.abs(cmd.time - next.time) < config.undo_merge_timeout then
return pop_undo(self, undo_stack, redo_stack)
end
end
function Doc:raw_insert(line, col, text, undo_stack, time)
-- split text into lines and merge with line at insertion point
local lines = split_lines(text)
local before = self.lines[line]:sub(1, col - 1)
local after = self.lines[line]:sub(col)
for i = 1, #lines - 1 do
lines[i] = lines[i] .. "\n"
end
lines[1] = before .. lines[1]
lines[#lines] = lines[#lines] .. after
-- splice lines into line array
splice(self.lines, line, 1, lines)
-- push undo
local line2, col2 = self:position_offset(line, col, #text)
push_undo(undo_stack, time, "selection", self:get_selection())
push_undo(undo_stack, time, "remove", line, col, line2, col2)
-- update highlighter and assure selection is in bounds
self.highlighter:invalidate(line)
self:sanitize_selection()
end
function Doc:raw_remove(line1, col1, line2, col2, undo_stack, time)
-- push undo
local text = self:get_text(line1, col1, line2, col2)
push_undo(undo_stack, time, "selection", self:get_selection())
push_undo(undo_stack, time, "insert", line1, col1, text)
-- get line content before/after removed text
local before = self.lines[line1]:sub(1, col1 - 1)
local after = self.lines[line2]:sub(col2)
-- splice line into line array
splice(self.lines, line1, line2 - line1 + 1, { before .. after })
-- update highlighter and assure selection is in bounds
self.highlighter:invalidate(line1)
self:sanitize_selection()
end
function Doc:insert(line, col, text)
self.redo_stack = { idx = 1 }
line, col = self:sanitize_position(line, col)
self:raw_insert(line, col, text, self.undo_stack, system.get_time())
end
function Doc:remove(line1, col1, line2, col2)
self.redo_stack = { idx = 1 }
line1, col1 = self:sanitize_position(line1, col1)
line2, col2 = self:sanitize_position(line2, col2)
line1, col1, line2, col2 = sort_positions(line1, col1, line2, col2)
self:raw_remove(line1, col1, line2, col2, self.undo_stack, system.get_time())
end
function Doc:undo()
pop_undo(self, self.undo_stack, self.redo_stack)
end
function Doc:redo()
pop_undo(self, self.redo_stack, self.undo_stack)
end
function Doc:text_input(text)
if self:has_selection() then
self:delete_to()
end
local line, col = self:get_selection()
self:insert(line, col, text)
self:move_to(#text)
end
function Doc:replace(fn)
local line1, col1, line2, col2, swap
local had_selection = self:has_selection()
if had_selection then
line1, col1, line2, col2, swap = self:get_selection(true)
else
line1, col1, line2, col2 = 1, 1, #self.lines, #self.lines[#self.lines]
end
local old_text = self:get_text(line1, col1, line2, col2)
local new_text, n = fn(old_text)
if old_text ~= new_text then
self:insert(line2, col2, new_text)
self:remove(line1, col1, line2, col2)
if had_selection then
line2, col2 = self:position_offset(line1, col1, #new_text)
self:set_selection(line1, col1, line2, col2, swap)
end
end
return n
end
function Doc:delete_to(...)
local line, col = self:get_selection(true)
if self:has_selection() then
self:remove(self:get_selection())
else
local line2, col2 = self:position_offset(line, col, ...)
self:remove(line, col, line2, col2)
line, col = sort_positions(line, col, line2, col2)
end
self:set_selection(line, col)
end
function Doc:move_to(...)
local line, col = self:get_selection()
self:set_selection(self:position_offset(line, col, ...))
end
function Doc:select_to(...)
local line, col, line2, col2 = self:get_selection()
line, col = self:position_offset(line, col, ...)
self:set_selection(line, col, line2, col2)
end
return Doc

@ -0,0 +1,52 @@
local search = {}
local default_opt = {}
local function pattern_lower(str)
if str:sub(1, 1) == "%" then
return str
end
return str:lower()
end
local function init_args(doc, line, col, text, opt)
opt = opt or default_opt
line, col = doc:sanitize_position(line, col)
if opt.no_case then
if opt.pattern then
text = text:gsub("%%?.", pattern_lower)
else
text = text:lower()
end
end
return doc, line, col, text, opt
end
function search.find(doc, line, col, text, opt)
doc, line, col, text, opt = init_args(doc, line, col, text, opt)
for line = line, #doc.lines do
local line_text = doc.lines[line]
if opt.no_case then
line_text = line_text:lower()
end
local s, e = line_text:find(text, col, not opt.pattern)
if s then
return line, s, line, e + 1
end
col = 1
end
if opt.wrap then
opt = { no_case = opt.no_case, pattern = opt.pattern }
return search.find(doc, 1, 1, text, opt)
end
end
return search

@ -0,0 +1,136 @@
local common = require "core.common"
local config = require "core.config"
-- functions for translating a Doc position to another position these functions
-- can be passed to Doc:move_to|select_to|delete_to()
local translate = {}
local function is_non_word(char)
return config.non_word_chars:find(char, nil, true)
end
function translate.previous_char(doc, line, col)
repeat
line, col = doc:position_offset(line, col, -1)
until not common.is_utf8_cont(doc:get_char(line, col))
return line, col
end
function translate.next_char(doc, line, col)
repeat
line, col = doc:position_offset(line, col, 1)
until not common.is_utf8_cont(doc:get_char(line, col))
return line, col
end
function translate.previous_word_start(doc, line, col)
local prev
while line > 1 or col > 1 do
local l, c = doc:position_offset(line, col, -1)
local char = doc:get_char(l, c)
if prev and prev ~= char or not is_non_word(char) then
break
end
prev, line, col = char, l, c
end
return translate.start_of_word(doc, line, col)
end
function translate.next_word_end(doc, line, col)
local prev
local end_line, end_col = translate.end_of_doc(doc, line, col)
while line < end_line or col < end_col do
local char = doc:get_char(line, col)
if prev and prev ~= char or not is_non_word(char) then
break
end
line, col = doc:position_offset(line, col, 1)
prev = char
end
return translate.end_of_word(doc, line, col)
end
function translate.start_of_word(doc, line, col)
while true do
local line2, col2 = doc:position_offset(line, col, -1)
local char = doc:get_char(line2, col2)
if is_non_word(char)
or line == line2 and col == col2 then
break
end
line, col = line2, col2
end
return line, col
end
function translate.end_of_word(doc, line, col)
while true do
local line2, col2 = doc:position_offset(line, col, 1)
local char = doc:get_char(line, col)
if is_non_word(char)
or line == line2 and col == col2 then
break
end
line, col = line2, col2
end
return line, col
end
function translate.previous_block_start(doc, line, col)
while true do
line = line - 1
if line <= 1 then
return 1, 1
end
if doc.lines[line-1]:find("^%s*$")
and not doc.lines[line]:find("^%s*$") then
return line, (doc.lines[line]:find("%S"))
end
end
end
function translate.next_block_end(doc, line, col)
while true do
if line >= #doc.lines then
return #doc.lines, 1
end
if doc.lines[line+1]:find("^%s*$")
and not doc.lines[line]:find("^%s*$") then
return line+1, #doc.lines[line+1]
end
line = line + 1
end
end
function translate.start_of_line(doc, line, col)
return line, 1
end
function translate.end_of_line(doc, line, col)
return line, math.huge
end
function translate.start_of_doc(doc, line, col)
return 1, 1
end
function translate.end_of_doc(doc, line, col)
return #doc.lines, #doc.lines[#doc.lines]
end
return translate

@ -0,0 +1,383 @@
local core = require "core"
local common = require "core.common"
local config = require "core.config"
local style = require "core.style"
local keymap = require "core.keymap"
local translate = require "core.doc.translate"
local View = require "core.view"
local DocView = View:extend()
local function move_to_line_offset(dv, line, col, offset)
local xo = dv.last_x_offset
if xo.line ~= line or xo.col ~= col then
xo.offset = dv:get_col_x_offset(line, col)
end
xo.line = line + offset
xo.col = dv:get_x_offset_col(line + offset, xo.offset)
return xo.line, xo.col
end
DocView.translate = {
["previous_page"] = function(doc, line, col, dv)
local min, max = dv:get_visible_line_range()
return line - (max - min), 1
end,
["next_page"] = function(doc, line, col, dv)
local min, max = dv:get_visible_line_range()
return line + (max - min), 1
end,
["previous_line"] = function(doc, line, col, dv)
if line == 1 then
return 1, 1
end
return move_to_line_offset(dv, line, col, -1)
end,
["next_line"] = function(doc, line, col, dv)
if line == #doc.lines then
return #doc.lines, math.huge
end
return move_to_line_offset(dv, line, col, 1)
end,
}
local blink_period = 0.8
function DocView:new(doc)
DocView.super.new(self)
self.cursor = "ibeam"
self.scrollable = true
self.doc = assert(doc)
self.font = "code_font"
self.last_x_offset = {}
self.blink_timer = 0
end
function DocView:try_close(do_close)
if self.doc:is_dirty()
and #core.get_views_referencing_doc(self.doc) == 1 then
core.command_view:enter("Unsaved Changes; Confirm Close", function(_, item)
if item.text:match("^[cC]") then
do_close()
elseif item.text:match("^[sS]") then
self.doc:save()
do_close()
end
end, function(text)
local items = {}
if not text:find("^[^cC]") then table.insert(items, "Close Without Saving") end
if not text:find("^[^sS]") then table.insert(items, "Save And Close") end
return items
end)
else
do_close()
end
end
function DocView:get_name()
local post = self.doc:is_dirty() and "*" or ""
local name = self.doc:get_name()
return name:match("[^/%\\]*$") .. post
end
function DocView:get_scrollable_size()
return self:get_line_height() * (#self.doc.lines - 1) + self.size.y
end
function DocView:get_font()
return style[self.font]
end
function DocView:get_line_height()
return math.floor(self:get_font():get_height() * config.line_height)
end
function DocView:get_gutter_width()
return self:get_font():get_width(#self.doc.lines) + style.padding.x * 2
end
function DocView:get_line_screen_position(idx)
local x, y = self:get_content_offset()
local lh = self:get_line_height()
local gw = self:get_gutter_width()
return x + gw, y + (idx-1) * lh + style.padding.y
end
function DocView:get_line_text_y_offset()
local lh = self:get_line_height()
local th = self:get_font():get_height()
return (lh - th) / 2
end
function DocView:get_visible_line_range()
local x, y, x2, y2 = self:get_content_bounds()
local lh = self:get_line_height()
local minline = math.max(1, math.floor(y / lh))
local maxline = math.min(#self.doc.lines, math.floor(y2 / lh) + 1)
return minline, maxline
end
function DocView:get_col_x_offset(line, col)
local text = self.doc.lines[line]
if not text then return 0 end
return self:get_font():get_width(text:sub(1, col - 1))
end
function DocView:get_x_offset_col(line, x)
local text = self.doc.lines[line]
local xoffset, last_i, i = 0, 1, 1
for char in common.utf8_chars(text) do
local w = self:get_font():get_width(char)
if xoffset >= x then
return (xoffset - x > w / 2) and last_i or i
end
xoffset = xoffset + w
last_i = i
i = i + #char
end
return #text
end
function DocView:resolve_screen_position(x, y)
local ox, oy = self:get_line_screen_position(1)
local line = math.floor((y - oy) / self:get_line_height()) + 1
line = common.clamp(line, 1, #self.doc.lines)
local col = self:get_x_offset_col(line, x - ox)
return line, col
end
function DocView:scroll_to_line(line, ignore_if_visible, instant)
local min, max = self:get_visible_line_range()
if not (ignore_if_visible and line > min and line < max) then
local lh = self:get_line_height()
self.scroll.to.y = math.max(0, lh * (line - 1) - self.size.y / 2)
if instant then
self.scroll.y = self.scroll.to.y
end
end
end
function DocView:scroll_to_make_visible(line, col)
local min = self:get_line_height() * (line - 1)
local max = self:get_line_height() * (line + 2) - self.size.y
self.scroll.to.y = math.min(self.scroll.to.y, min)
self.scroll.to.y = math.max(self.scroll.to.y, max)
local gw = self:get_gutter_width()
local xoffset = self:get_col_x_offset(line, col)
local max = xoffset - self.size.x + gw + self.size.x / 5
self.scroll.to.x = math.max(0, max)
end
local function mouse_selection(doc, clicks, line1, col1, line2, col2)
local swap = line2 < line1 or line2 == line1 and col2 <= col1
if swap then
line1, col1, line2, col2 = line2, col2, line1, col1
end
if clicks == 2 then
line1, col1 = translate.start_of_word(doc, line1, col1)
line2, col2 = translate.end_of_word(doc, line2, col2)
elseif clicks == 3 then
if line2 == #doc.lines and doc.lines[#doc.lines] ~= "\n" then
doc:insert(math.huge, math.huge, "\n")
end
line1, col1, line2, col2 = line1, 1, line2 + 1, 1
end
if swap then
return line2, col2, line1, col1
end
return line1, col1, line2, col2
end
function DocView:on_mouse_pressed(button, x, y, clicks)
local caught = DocView.super.on_mouse_pressed(self, button, x, y, clicks)
if caught then
return
end
if keymap.modkeys["shift"] then
if clicks == 1 then
local line1, col1 = select(3, self.doc:get_selection())
local line2, col2 = self:resolve_screen_position(x, y)
self.doc:set_selection(line2, col2, line1, col1)
end
else
local line, col = self:resolve_screen_position(x, y)
self.doc:set_selection(mouse_selection(self.doc, clicks, line, col, line, col))
self.mouse_selecting = { line, col, clicks = clicks }
end
self.blink_timer = 0
end
function DocView:on_mouse_moved(x, y, ...)
DocView.super.on_mouse_moved(self, x, y, ...)
if self:scrollbar_overlaps_point(x, y) or self.dragging_scrollbar then
self.cursor = "arrow"
else
self.cursor = "ibeam"
end
if self.mouse_selecting then
local l1, c1 = self:resolve_screen_position(x, y)
local l2, c2 = table.unpack(self.mouse_selecting)
local clicks = self.mouse_selecting.clicks
self.doc:set_selection(mouse_selection(self.doc, clicks, l1, c1, l2, c2))
end
end
function DocView:on_mouse_released(button)
DocView.super.on_mouse_released(self, button)
self.mouse_selecting = nil
end
function DocView:on_text_input(text)
self.doc:text_input(text)
end
function DocView:update()
-- scroll to make caret visible and reset blink timer if it moved
local line, col = self.doc:get_selection()
if (line ~= self.last_line or col ~= self.last_col) and self.size.x > 0 then
if core.active_view == self then
self:scroll_to_make_visible(line, col)
end
self.blink_timer = 0
self.last_line, self.last_col = line, col
end
-- update blink timer
if self == core.active_view and not self.mouse_selecting then
local n = blink_period / 2
local prev = self.blink_timer
self.blink_timer = (self.blink_timer + 1 / config.fps) % blink_period
if (self.blink_timer > n) ~= (prev > n) then
core.redraw = true
end
end
DocView.super.update(self)
end
function DocView:draw_line_highlight(x, y)
local lh = self:get_line_height()
renderer.draw_rect(x, y, self.size.x, lh, style.line_highlight)
end
function DocView:draw_line_text(idx, x, y)
local tx, ty = x, y + self:get_line_text_y_offset()
local font = self:get_font()
for _, type, text in self.doc.highlighter:each_token(idx) do
local color = style.syntax[type]
tx = renderer.draw_text(font, text, tx, ty, color)
end
end
function DocView:draw_line_body(idx, x, y)
local line, col = self.doc:get_selection()
-- draw selection if it overlaps this line
local line1, col1, line2, col2 = self.doc:get_selection(true)
if idx >= line1 and idx <= line2 then
local text = self.doc.lines[idx]
if line1 ~= idx then col1 = 1 end
if line2 ~= idx then col2 = #text + 1 end
local x1 = x + self:get_col_x_offset(idx, col1)
local x2 = x + self:get_col_x_offset(idx, col2)
local lh = self:get_line_height()
renderer.draw_rect(x1, y, x2 - x1, lh, style.selection)
end
-- draw line highlight if caret is on this line
if config.highlight_current_line and not self.doc:has_selection()
and line == idx and core.active_view == self then
self:draw_line_highlight(x + self.scroll.x, y)
end
-- draw line's text
self:draw_line_text(idx, x, y)
-- draw caret if it overlaps this line
if line == idx and core.active_view == self
and self.blink_timer < blink_period / 2
and system.window_has_focus() then
local lh = self:get_line_height()
local x1 = x + self:get_col_x_offset(line, col)
renderer.draw_rect(x1, y, style.caret_width, lh, style.caret)
end
end
function DocView:draw_line_gutter(idx, x, y)
local color = style.line_number
local line1, _, line2, _ = self.doc:get_selection(true)
if idx >= line1 and idx <= line2 then
color = style.line_number2
end
local yoffset = self:get_line_text_y_offset()
x = x + style.padding.x
renderer.draw_text(self:get_font(), idx, x, y + yoffset, color)
end
function DocView:draw()
self:draw_background(style.background)
local font = self:get_font()
font:set_tab_width(font:get_width(" ") * config.indent_size)
local minline, maxline = self:get_visible_line_range()
local lh = self:get_line_height()
local _, y = self:get_line_screen_position(minline)
local x = self.position.x
for i = minline, maxline do
self:draw_line_gutter(i, x, y)
y = y + lh
end
local x, y = self:get_line_screen_position(minline)
local gw = self:get_gutter_width()
local pos = self.position
core.push_clip_rect(pos.x + gw, pos.y, self.size.x, self.size.y)
for i = minline, maxline do
self:draw_line_body(i, x, y)
y = y + lh
end
core.pop_clip_rect()
self:draw_scrollbar()
end
return DocView

@ -0,0 +1,480 @@
require "core.strict"
local common = require "core.common"
local config = require "core.config"
local style = require "core.style"
local command
local keymap
local RootView
local StatusView
local CommandView
local Doc
local core = {}
local function project_scan_thread()
local function diff_files(a, b)
if #a ~= #b then return true end
for i, v in ipairs(a) do
if b[i].filename ~= v.filename
or b[i].modified ~= v.modified then
return true
end
end
end
local function compare_file(a, b)
return a.filename < b.filename
end
local function get_files(path, t)
coroutine.yield()
t = t or {}
local size_limit = config.file_size_limit * 10e5
local all = system.list_dir(path) or {}
local dirs, files = {}, {}
for _, file in ipairs(all) do
if not common.match_pattern(file, config.ignore_files) then
local file = (path ~= "." and path .. PATHSEP or "") .. file
local info = system.get_file_info(file)
if info and info.size < size_limit then
info.filename = file
table.insert(info.type == "dir" and dirs or files, info)
end
end
end
table.sort(dirs, compare_file)
for _, f in ipairs(dirs) do
table.insert(t, f)
get_files(f.filename, t)
end
table.sort(files, compare_file)
for _, f in ipairs(files) do
table.insert(t, f)
end
return t
end
while true do
-- get project files and replace previous table if the new table is
-- different
local t = get_files(".")
if diff_files(core.project_files, t) then
core.project_files = t
core.redraw = true
end
-- wait for next scan
coroutine.yield(config.project_scan_rate)
end
end
function core.init()
command = require "core.command"
keymap = require "core.keymap"
RootView = require "core.rootview"
StatusView = require "core.statusview"
CommandView = require "core.commandview"
Doc = require "core.doc"
local project_dir = EXEDIR
local files = {}
for i = 2, #ARGS do
local info = system.get_file_info(ARGS[i]) or {}
if info.type == "file" then
table.insert(files, system.absolute_path(ARGS[i]))
elseif info.type == "dir" then
project_dir = ARGS[i]
end
end
system.chdir(project_dir)
core.frame_start = 0
core.clip_rect_stack = {{ 0,0,0,0 }}
core.log_items = {}
core.docs = {}
core.threads = setmetatable({}, { __mode = "k" })
core.project_files = {}
core.redraw = true
core.root_view = RootView()
core.command_view = CommandView()
core.status_view = StatusView()
core.root_view.root_node:split("down", core.command_view, true)
core.root_view.root_node.b:split("down", core.status_view, true)
core.add_thread(project_scan_thread)
command.add_defaults()
local got_plugin_error = not core.load_plugins()
local got_user_error = not core.try(require, "user")
local got_project_error = not core.load_project_module()
for _, filename in ipairs(files) do
core.root_view:open_doc(core.open_doc(filename))
end
if got_plugin_error or got_user_error or got_project_error then
command.perform("core:open-log")
end
end
local temp_uid = (system.get_time() * 1000) % 0xffffffff
local temp_file_prefix = string.format(".lite_temp_%08x", temp_uid)
local temp_file_counter = 0
local function delete_temp_files()
for _, filename in ipairs(system.list_dir(EXEDIR)) do
if filename:find(temp_file_prefix, 1, true) == 1 then
os.remove(EXEDIR .. PATHSEP .. filename)
end
end
end
function core.temp_filename(ext)
temp_file_counter = temp_file_counter + 1
return EXEDIR .. PATHSEP .. temp_file_prefix
.. string.format("%06x", temp_file_counter) .. (ext or "")
end
function core.quit(force)
if force then
delete_temp_files()
os.exit()
end
local dirty_count = 0
local dirty_name
for _, doc in ipairs(core.docs) do
if doc:is_dirty() then
dirty_count = dirty_count + 1
dirty_name = doc:get_name()
end
end
if dirty_count > 0 then
local text
if dirty_count == 1 then
text = string.format("\"%s\" has unsaved changes. Quit anyway?", dirty_name)
else
text = string.format("%d docs have unsaved changes. Quit anyway?", dirty_count)
end
local confirm = system.show_confirm_dialog("Unsaved Changes", text)
if not confirm then return end
end
core.quit(true)
end
function core.load_plugins()
local no_errors = true
local files = system.list_dir(EXEDIR .. "/data/plugins")
for _, filename in ipairs(files) do
local modname = "plugins." .. filename:gsub(".lua$", "")
local ok = core.try(require, modname)
if ok then
core.log_quiet("Loaded plugin %q", modname)
else
no_errors = false
end
end
return no_errors
end
function core.load_project_module()
local filename = ".lite_project.lua"
if system.get_file_info(filename) then
return core.try(function()
local fn, err = loadfile(filename)
if not fn then error("Error when loading project module:\n\t" .. err) end
fn()
core.log_quiet("Loaded project module")
end)
end
return true
end
function core.reload_module(name)
local old = package.loaded[name]
package.loaded[name] = nil
local new = require(name)
if type(old) == "table" then
for k, v in pairs(new) do old[k] = v end
package.loaded[name] = old
end
end
function core.set_active_view(view)
assert(view, "Tried to set active view to nil")
if view ~= core.active_view then
core.last_active_view = core.active_view
core.active_view = view
end
end
function core.add_thread(f, weak_ref)
local key = weak_ref or #core.threads + 1
local fn = function() return core.try(f) end
core.threads[key] = { cr = coroutine.create(fn), wake = 0 }
end
function core.push_clip_rect(x, y, w, h)
local x2, y2, w2, h2 = table.unpack(core.clip_rect_stack[#core.clip_rect_stack])
local r, b, r2, b2 = x+w, y+h, x2+w2, y2+h2
x, y = math.max(x, x2), math.max(y, y2)
b, r = math.min(b, b2), math.min(r, r2)
w, h = r-x, b-y
table.insert(core.clip_rect_stack, { x, y, w, h })
renderer.set_clip_rect(x, y, w, h)
end
function core.pop_clip_rect()
table.remove(core.clip_rect_stack)
local x, y, w, h = table.unpack(core.clip_rect_stack[#core.clip_rect_stack])
renderer.set_clip_rect(x, y, w, h)
end
function core.open_doc(filename)
if filename then
-- try to find existing doc for filename
local abs_filename = system.absolute_path(filename)
for _, doc in ipairs(core.docs) do
if doc.filename
and abs_filename == system.absolute_path(doc.filename) then
return doc
end
end
end
-- no existing doc for filename; create new
local doc = Doc(filename)
table.insert(core.docs, doc)
core.log_quiet(filename and "Opened doc \"%s\"" or "Opened new doc", filename)
return doc
end
function core.get_views_referencing_doc(doc)
local res = {}
local views = core.root_view.root_node:get_children()
for _, view in ipairs(views) do
if view.doc == doc then table.insert(res, view) end
end
return res
end
local function log(icon, icon_color, fmt, ...)
local text = string.format(fmt, ...)
if icon then
core.status_view:show_message(icon, icon_color, text)
end
local info = debug.getinfo(2, "Sl")
local at = string.format("%s:%d", info.short_src, info.currentline)
local item = { text = text, time = os.time(), at = at }
table.insert(core.log_items, item)
if #core.log_items > config.max_log_items then
table.remove(core.log_items, 1)
end
return item
end
function core.log(...)
return log("i", style.text, ...)
end
function core.log_quiet(...)
return log(nil, nil, ...)
end
function core.error(...)
return log("!", style.accent, ...)
end
function core.try(fn, ...)
local err
local ok, res = xpcall(fn, function(msg)
local item = core.error("%s", msg)
item.info = debug.traceback(nil, 2):gsub("\t", "")
err = msg
end, ...)
if ok then
return true, res
end
return false, err
end
function core.on_event(type, ...)
local did_keymap = false
if type == "textinput" then
core.root_view:on_text_input(...)
elseif type == "keypressed" then
did_keymap = keymap.on_key_pressed(...)
elseif type == "keyreleased" then
keymap.on_key_released(...)
elseif type == "mousemoved" then
core.root_view:on_mouse_moved(...)
elseif type == "mousepressed" then
core.root_view:on_mouse_pressed(...)
elseif type == "mousereleased" then
core.root_view:on_mouse_released(...)
elseif type == "mousewheel" then
core.root_view:on_mouse_wheel(...)
elseif type == "filedropped" then
local filename, mx, my = ...
local info = system.get_file_info(filename)
if info and info.type == "dir" then
system.exec(string.format("%q %q", EXEFILE, filename))
else
local ok, doc = core.try(core.open_doc, filename)
if ok then
local node = core.root_view.root_node:get_child_overlapping_point(mx, my)
node:set_active_view(node.active_view)
core.root_view:open_doc(doc)
end
end
elseif type == "quit" then
core.quit()
end
return did_keymap
end
function core.step()
-- handle events
local did_keymap = false
local mouse_moved = false
local mouse = { x = 0, y = 0, dx = 0, dy = 0 }
for type, a,b,c,d in system.poll_event do
if type == "mousemoved" then
mouse_moved = true
mouse.x, mouse.y = a, b
mouse.dx, mouse.dy = mouse.dx + c, mouse.dy + d
elseif type == "textinput" and did_keymap then
did_keymap = false
else
local _, res = core.try(core.on_event, type, a, b, c, d)
did_keymap = res or did_keymap
end
core.redraw = true
end
if mouse_moved then
core.try(core.on_event, "mousemoved", mouse.x, mouse.y, mouse.dx, mouse.dy)
end
local width, height = renderer.get_size()
-- update
core.root_view.size.x, core.root_view.size.y = width, height
core.root_view:update()
if not core.redraw then return false end
core.redraw = false
-- close unreferenced docs
for i = #core.docs, 1, -1 do
local doc = core.docs[i]
if #core.get_views_referencing_doc(doc) == 0 then
table.remove(core.docs, i)
core.log_quiet("Closed doc \"%s\"", doc:get_name())
end
end
-- update window title
local name = core.active_view:get_name()
local title = (name ~= "---") and (name .. " - lite") or "lite"
if title ~= core.window_title then
system.set_window_title(title)
core.window_title = title
end
-- draw
renderer.begin_frame()
core.clip_rect_stack[1] = { 0, 0, width, height }
renderer.set_clip_rect(table.unpack(core.clip_rect_stack[1]))
core.root_view:draw()
renderer.end_frame()
return true
end
local run_threads = coroutine.wrap(function()
while true do
local max_time = 1 / config.fps - 0.004
local ran_any_threads = false
for k, thread in pairs(core.threads) do
-- run thread
if thread.wake < system.get_time() then
local _, wait = assert(coroutine.resume(thread.cr))
if coroutine.status(thread.cr) == "dead" then
if type(k) == "number" then
table.remove(core.threads, k)
else
core.threads[k] = nil
end
elseif wait then
thread.wake = system.get_time() + wait
end
ran_any_threads = true
end
-- stop running threads if we're about to hit the end of frame
if system.get_time() - core.frame_start > max_time then
coroutine.yield()
end
end
if not ran_any_threads then coroutine.yield() end
end
end)
function core.run()
while true do
core.frame_start = system.get_time()
local did_redraw = core.step()
run_threads()
if not did_redraw and not system.window_has_focus() then
system.wait_event(0.25)
end
local elapsed = system.get_time() - core.frame_start
system.sleep(math.max(0, 1 / config.fps - elapsed))
end
end
function core.on_error(err)
-- write error to file
local fp = io.open(EXEDIR .. "/error.txt", "wb")
fp:write("Error: " .. tostring(err) .. "\n")
fp:write(debug.traceback(nil, 4))
fp:close()
-- save copy of all unsaved documents
for _, doc in ipairs(core.docs) do
if doc:is_dirty() and doc.filename then
doc:save(doc.filename .. "~")
end
end
end
return core

@ -0,0 +1,186 @@
local command = require "core.command"
local keymap = {}
keymap.modkeys = {}
keymap.map = {}
keymap.reverse_map = {}
local modkey_map = {
["left ctrl"] = "ctrl",
["right ctrl"] = "ctrl",
["left shift"] = "shift",
["right shift"] = "shift",
["left alt"] = "alt",
["right alt"] = "altgr",
}
local modkeys = { "ctrl", "alt", "altgr", "shift" }
local function key_to_stroke(k)
local stroke = ""
for _, mk in ipairs(modkeys) do
if keymap.modkeys[mk] then
stroke = stroke .. mk .. "+"
end
end
return stroke .. k
end
function keymap.add(map, overwrite)
for stroke, commands in pairs(map) do
if type(commands) == "string" then
commands = { commands }
end
if overwrite then
keymap.map[stroke] = commands
else
keymap.map[stroke] = keymap.map[stroke] or {}
for i = #commands, 1, -1 do
table.insert(keymap.map[stroke], 1, commands[i])
end
end
for _, cmd in ipairs(commands) do
keymap.reverse_map[cmd] = stroke
end
end
end
function keymap.get_binding(cmd)
return keymap.reverse_map[cmd]
end
function keymap.on_key_pressed(k)
local mk = modkey_map[k]
if mk then
keymap.modkeys[mk] = true
-- work-around for windows where `altgr` is treated as `ctrl+alt`
if mk == "altgr" then
keymap.modkeys["ctrl"] = false
end
else
local stroke = key_to_stroke(k)
local commands = keymap.map[stroke]
if commands then
for _, cmd in ipairs(commands) do
local performed = command.perform(cmd)
if performed then break end
end
return true
end
end
return false
end
function keymap.on_key_released(k)
local mk = modkey_map[k]
if mk then
keymap.modkeys[mk] = false
end
end
keymap.add {
["ctrl+shift+p"] = "core:find-command",
["ctrl+p"] = "core:find-file",
["ctrl+o"] = "core:open-file",
["ctrl+n"] = "core:new-doc",
["alt+return"] = "core:toggle-fullscreen",
["alt+shift+j"] = "root:split-left",
["alt+shift+l"] = "root:split-right",
["alt+shift+i"] = "root:split-up",
["alt+shift+k"] = "root:split-down",
["alt+j"] = "root:switch-to-left",
["alt+l"] = "root:switch-to-right",
["alt+i"] = "root:switch-to-up",
["alt+k"] = "root:switch-to-down",
["ctrl+w"] = "root:close",
["ctrl+tab"] = "root:switch-to-next-tab",
["ctrl+shift+tab"] = "root:switch-to-previous-tab",
["ctrl+pageup"] = "root:move-tab-left",
["ctrl+pagedown"] = "root:move-tab-right",
["alt+1"] = "root:switch-to-tab-1",
["alt+2"] = "root:switch-to-tab-2",
["alt+3"] = "root:switch-to-tab-3",
["alt+4"] = "root:switch-to-tab-4",
["alt+5"] = "root:switch-to-tab-5",
["alt+6"] = "root:switch-to-tab-6",
["alt+7"] = "root:switch-to-tab-7",
["alt+8"] = "root:switch-to-tab-8",
["alt+9"] = "root:switch-to-tab-9",
["ctrl+f"] = "find-replace:find",
["ctrl+r"] = "find-replace:replace",
["f3"] = "find-replace:repeat-find",
["shift+f3"] = "find-replace:previous-find",
["ctrl+g"] = "doc:go-to-line",
["ctrl+s"] = "doc:save",
["ctrl+shift+s"] = "doc:save-as",
["ctrl+z"] = "doc:undo",
["ctrl+y"] = "doc:redo",
["ctrl+x"] = "doc:cut",
["ctrl+c"] = "doc:copy",
["ctrl+v"] = "doc:paste",
["escape"] = { "command:escape", "doc:select-none" },
["tab"] = { "command:complete", "doc:indent" },
["shift+tab"] = "doc:unindent",
["backspace"] = "doc:backspace",
["shift+backspace"] = "doc:backspace",
["ctrl+backspace"] = "doc:delete-to-previous-word-start",
["ctrl+shift+backspace"] = "doc:delete-to-previous-word-start",
["delete"] = "doc:delete",
["shift+delete"] = "doc:delete",
["ctrl+delete"] = "doc:delete-to-next-word-end",
["ctrl+shift+delete"] = "doc:delete-to-next-word-end",
["return"] = { "command:submit", "doc:newline" },
["keypad enter"] = { "command:submit", "doc:newline" },
["ctrl+return"] = "doc:newline-below",
["ctrl+shift+return"] = "doc:newline-above",
["ctrl+j"] = "doc:join-lines",
["ctrl+a"] = "doc:select-all",
["ctrl+d"] = { "find-replace:select-next", "doc:select-word" },
["ctrl+l"] = "doc:select-lines",
["ctrl+/"] = "doc:toggle-line-comments",
["ctrl+up"] = "doc:move-lines-up",
["ctrl+down"] = "doc:move-lines-down",
["ctrl+shift+d"] = "doc:duplicate-lines",
["ctrl+shift+k"] = "doc:delete-lines",
["left"] = "doc:move-to-previous-char",
["right"] = "doc:move-to-next-char",
["up"] = { "command:select-previous", "doc:move-to-previous-line" },
["down"] = { "command:select-next", "doc:move-to-next-line" },
["ctrl+left"] = "doc:move-to-previous-word-start",
["ctrl+right"] = "doc:move-to-next-word-end",
["ctrl+["] = "doc:move-to-previous-block-start",
["ctrl+]"] = "doc:move-to-next-block-end",
["home"] = "doc:move-to-start-of-line",
["end"] = "doc:move-to-end-of-line",
["ctrl+home"] = "doc:move-to-start-of-doc",
["ctrl+end"] = "doc:move-to-end-of-doc",
["pageup"] = "doc:move-to-previous-page",
["pagedown"] = "doc:move-to-next-page",
["shift+left"] = "doc:select-to-previous-char",
["shift+right"] = "doc:select-to-next-char",
["shift+up"] = "doc:select-to-previous-line",
["shift+down"] = "doc:select-to-next-line",
["ctrl+shift+left"] = "doc:select-to-previous-word-start",
["ctrl+shift+right"] = "doc:select-to-next-word-end",
["ctrl+shift+["] = "doc:select-to-previous-block-start",
["ctrl+shift+]"] = "doc:select-to-next-block-end",
["shift+home"] = "doc:select-to-start-of-line",
["shift+end"] = "doc:select-to-end-of-line",
["ctrl+shift+home"] = "doc:select-to-start-of-doc",
["ctrl+shift+end"] = "doc:select-to-end-of-doc",
["shift+pageup"] = "doc:select-to-previous-page",
["shift+pagedown"] = "doc:select-to-next-page",
}
return keymap

@ -0,0 +1,74 @@
local core = require "core"
local style = require "core.style"
local View = require "core.view"
local LogView = View:extend()
function LogView:new()
LogView.super.new(self)
self.last_item = core.log_items[#core.log_items]
self.scrollable = true
self.yoffset = 0
end
function LogView:get_name()
return "Log"
end
function LogView:update()
local item = core.log_items[#core.log_items]
if self.last_item ~= item then
self.last_item = item
self.scroll.to.y = 0
self.yoffset = -(style.font:get_height() + style.padding.y)
end
self:move_towards("yoffset", 0)
LogView.super.update(self)
end
local function draw_text_multiline(font, text, x, y, color)
local th = font:get_height()
local resx, resy = x, y
for line in text:gmatch("[^\n]+") do
resy = y
resx = renderer.draw_text(style.font, line, x, y, color)
y = y + th
end
return resx, resy
end
function LogView:draw()
self:draw_background(style.background)
local ox, oy = self:get_content_offset()
local th = style.font:get_height()
local y = oy + style.padding.y + self.yoffset
for i = #core.log_items, 1, -1 do
local x = ox + style.padding.x
local item = core.log_items[i]
local time = os.date(nil, item.time)
x = renderer.draw_text(style.font, time, x, y, style.dim)
x = x + style.padding.x
local subx = x
x, y = draw_text_multiline(style.font, item.text, x, y, style.text)
renderer.draw_text(style.font, " at " .. item.at, x, y, style.dim)
y = y + th
if item.info then
subx, y = draw_text_multiline(style.font, item.info, subx, y, style.dim)
y = y + th
end
y = y + style.padding.y
end
end
return LogView

@ -0,0 +1,58 @@
local Object = {}
Object.__index = Object
function Object:new()
end
function Object:extend()
local cls = {}
for k, v in pairs(self) do
if k:find("__") == 1 then
cls[k] = v
end
end
cls.__index = cls
cls.super = self
setmetatable(cls, self)
return cls
end
function Object:implement(...)
for _, cls in pairs({...}) do
for k, v in pairs(cls) do
if self[k] == nil and type(v) == "function" then
self[k] = v
end
end
end
end
function Object:is(T)
local mt = getmetatable(self)
while mt do
if mt == T then
return true
end
mt = getmetatable(mt)
end
return false
end
function Object:__tostring()
return "Object"
end
function Object:__call(...)
local obj = setmetatable({}, self)
obj:new(...)
return obj
end
return Object

@ -0,0 +1,504 @@
local core = require "core"
local common = require "core.common"
local style = require "core.style"
local keymap = require "core.keymap"
local Object = require "core.object"
local View = require "core.view"
local DocView = require "core.docview"
local EmptyView = View:extend()
local function draw_text(x, y, color)
local th = style.big_font:get_height()
local dh = th + style.padding.y * 2
x = renderer.draw_text(style.big_font, "lite", x, y + (dh - th) / 2, color)
x = x + style.padding.x
renderer.draw_rect(x, y, math.ceil(1 * SCALE), dh, color)
local lines = {
{ fmt = "%s to run a command", cmd = "core:find-command" },
{ fmt = "%s to open a file from the project", cmd = "core:find-file" },
}
th = style.font:get_height()
y = y + (dh - th * 2 - style.padding.y) / 2
local w = 0
for _, line in ipairs(lines) do
local text = string.format(line.fmt, keymap.get_binding(line.cmd))
w = math.max(w, renderer.draw_text(style.font, text, x + style.padding.x, y, color))
y = y + th + style.padding.y
end
return w, dh
end
function EmptyView:draw()
self:draw_background(style.background)
local w, h = draw_text(0, 0, { 0, 0, 0, 0 })
local x = self.position.x + math.max(style.padding.x, (self.size.x - w) / 2)
local y = self.position.y + (self.size.y - h) / 2
draw_text(x, y, style.dim)
end
local Node = Object:extend()
function Node:new(type)
self.type = type or "leaf"
self.position = { x = 0, y = 0 }
self.size = { x = 0, y = 0 }
self.views = {}
self.divider = 0.5
if self.type == "leaf" then
self:add_view(EmptyView())
end
end
function Node:propagate(fn, ...)
self.a[fn](self.a, ...)
self.b[fn](self.b, ...)
end
function Node:on_mouse_moved(x, y, ...)
self.hovered_tab = self:get_tab_overlapping_point(x, y)
if self.type == "leaf" then
self.active_view:on_mouse_moved(x, y, ...)
else
self:propagate("on_mouse_moved", x, y, ...)
end
end
function Node:on_mouse_released(...)
if self.type == "leaf" then
self.active_view:on_mouse_released(...)
else
self:propagate("on_mouse_released", ...)
end
end
function Node:consume(node)
for k, _ in pairs(self) do self[k] = nil end
for k, v in pairs(node) do self[k] = v end
end
local type_map = { up="vsplit", down="vsplit", left="hsplit", right="hsplit" }
function Node:split(dir, view, locked)
assert(self.type == "leaf", "Tried to split non-leaf node")
local type = assert(type_map[dir], "Invalid direction")
local last_active = core.active_view
local child = Node()
child:consume(self)
self:consume(Node(type))
self.a = child
self.b = Node()
if view then self.b:add_view(view) end
if locked then
self.b.locked = locked
core.set_active_view(last_active)
end
if dir == "up" or dir == "left" then
self.a, self.b = self.b, self.a
end
return child
end
function Node:close_active_view(root)
local do_close = function()
if #self.views > 1 then
local idx = self:get_view_idx(self.active_view)
table.remove(self.views, idx)
self:set_active_view(self.views[idx] or self.views[#self.views])
else
local parent = self:get_parent_node(root)
local is_a = (parent.a == self)
local other = parent[is_a and "b" or "a"]
if other:get_locked_size() then
self.views = {}
self:add_view(EmptyView())
else
parent:consume(other)
local p = parent
while p.type ~= "leaf" do
p = p[is_a and "a" or "b"]
end
p:set_active_view(p.active_view)
end
end
core.last_active_view = nil
end
self.active_view:try_close(do_close)
end
function Node:add_view(view)
assert(self.type == "leaf", "Tried to add view to non-leaf node")
assert(not self.locked, "Tried to add view to locked node")
if self.views[1] and self.views[1]:is(EmptyView) then
table.remove(self.views)
end
table.insert(self.views, view)
self:set_active_view(view)
end
function Node:set_active_view(view)
assert(self.type == "leaf", "Tried to set active view on non-leaf node")
self.active_view = view
core.set_active_view(view)
end
function Node:get_view_idx(view)
for i, v in ipairs(self.views) do
if v == view then return i end
end
end
function Node:get_node_for_view(view)
for _, v in ipairs(self.views) do
if v == view then return self end
end
if self.type ~= "leaf" then
return self.a:get_node_for_view(view) or self.b:get_node_for_view(view)
end
end
function Node:get_parent_node(root)
if root.a == self or root.b == self then
return root
elseif root.type ~= "leaf" then
return self:get_parent_node(root.a) or self:get_parent_node(root.b)
end
end
function Node:get_children(t)
t = t or {}
for _, view in ipairs(self.views) do
table.insert(t, view)
end
if self.a then self.a:get_children(t) end
if self.b then self.b:get_children(t) end
return t
end
function Node:get_divider_overlapping_point(px, py)
if self.type ~= "leaf" then
local p = 6
local x, y, w, h = self:get_divider_rect()
x, y = x - p, y - p
w, h = w + p * 2, h + p * 2
if px > x and py > y and px < x + w and py < y + h then
return self
end
return self.a:get_divider_overlapping_point(px, py)
or self.b:get_divider_overlapping_point(px, py)
end
end
function Node:get_tab_overlapping_point(px, py)
if #self.views == 1 then return nil end
local x, y, w, h = self:get_tab_rect(1)
if px >= x and py >= y and px < x + w * #self.views and py < y + h then
return math.floor((px - x) / w) + 1
end
end
function Node:get_child_overlapping_point(x, y)
local child
if self.type == "leaf" then
return self
elseif self.type == "hsplit" then
child = (x < self.b.position.x) and self.a or self.b
elseif self.type == "vsplit" then
child = (y < self.b.position.y) and self.a or self.b
end
return child:get_child_overlapping_point(x, y)
end
function Node:get_tab_rect(idx)
local tw = math.min(style.tab_width, math.ceil(self.size.x / #self.views))
local h = style.font:get_height() + style.padding.y * 2
return self.position.x + (idx-1) * tw, self.position.y, tw, h
end
function Node:get_divider_rect()
local x, y = self.position.x, self.position.y
if self.type == "hsplit" then
return x + self.a.size.x, y, style.divider_size, self.size.y
elseif self.type == "vsplit" then
return x, y + self.a.size.y, self.size.x, style.divider_size
end
end
function Node:get_locked_size()
if self.type == "leaf" then
if self.locked then
local size = self.active_view.size
return size.x, size.y
end
else
local x1, y1 = self.a:get_locked_size()
local x2, y2 = self.b:get_locked_size()
if x1 and x2 then
local dsx = (x1 < 1 or x2 < 1) and 0 or style.divider_size
local dsy = (y1 < 1 or y2 < 1) and 0 or style.divider_size
return x1 + x2 + dsx, y1 + y2 + dsy
end
end
end
local function copy_position_and_size(dst, src)
dst.position.x, dst.position.y = src.position.x, src.position.y
dst.size.x, dst.size.y = src.size.x, src.size.y
end
-- calculating the sizes is the same for hsplits and vsplits, except the x/y
-- axis are swapped; this function lets us use the same code for both
local function calc_split_sizes(self, x, y, x1, x2)
local n
local ds = (x1 and x1 < 1 or x2 and x2 < 1) and 0 or style.divider_size
if x1 then
n = x1 + ds
elseif x2 then
n = self.size[x] - x2
else
n = math.floor(self.size[x] * self.divider)
end
self.a.position[x] = self.position[x]
self.a.position[y] = self.position[y]
self.a.size[x] = n - ds
self.a.size[y] = self.size[y]
self.b.position[x] = self.position[x] + n
self.b.position[y] = self.position[y]
self.b.size[x] = self.size[x] - n
self.b.size[y] = self.size[y]
end
function Node:update_layout()
if self.type == "leaf" then
local av = self.active_view
if #self.views > 1 then
local _, _, _, th = self:get_tab_rect(1)
av.position.x, av.position.y = self.position.x, self.position.y + th
av.size.x, av.size.y = self.size.x, self.size.y - th
else
copy_position_and_size(av, self)
end
else
local x1, y1 = self.a:get_locked_size()
local x2, y2 = self.b:get_locked_size()
if self.type == "hsplit" then
calc_split_sizes(self, "x", "y", x1, x2)
elseif self.type == "vsplit" then
calc_split_sizes(self, "y", "x", y1, y2)
end
self.a:update_layout()
self.b:update_layout()
end
end
function Node:update()
if self.type == "leaf" then
for _, view in ipairs(self.views) do
view:update()
end
else
self.a:update()
self.b:update()
end
end
function Node:draw_tabs()
local x, y, _, h = self:get_tab_rect(1)
local ds = style.divider_size
core.push_clip_rect(x, y, self.size.x, h)
renderer.draw_rect(x, y, self.size.x, h, style.background2)
renderer.draw_rect(x, y + h - ds, self.size.x, ds, style.divider)
for i, view in ipairs(self.views) do
local x, y, w, h = self:get_tab_rect(i)
local text = view:get_name()
local color = style.dim
if view == self.active_view then
color = style.text
renderer.draw_rect(x, y, w, h, style.background)
renderer.draw_rect(x + w, y, ds, h, style.divider)
renderer.draw_rect(x - ds, y, ds, h, style.divider)
end
if i == self.hovered_tab then
color = style.text
end
core.push_clip_rect(x, y, w, h)
x, w = x + style.padding.x, w - style.padding.x * 2
local align = style.font:get_width(text) > w and "left" or "center"
common.draw_text(style.font, color, text, align, x, y, w, h)
core.pop_clip_rect()
end
core.pop_clip_rect()
end
function Node:draw()
if self.type == "leaf" then
if #self.views > 1 then
self:draw_tabs()
end
local pos, size = self.active_view.position, self.active_view.size
core.push_clip_rect(pos.x, pos.y, size.x + pos.x % 1, size.y + pos.y % 1)
self.active_view:draw()
core.pop_clip_rect()
else
local x, y, w, h = self:get_divider_rect()
renderer.draw_rect(x, y, w, h, style.divider)
self:propagate("draw")
end
end
local RootView = View:extend()
function RootView:new()
RootView.super.new(self)
self.root_node = Node()
self.deferred_draws = {}
self.mouse = { x = 0, y = 0 }
end
function RootView:defer_draw(fn, ...)
table.insert(self.deferred_draws, 1, { fn = fn, ... })
end
function RootView:get_active_node()
return self.root_node:get_node_for_view(core.active_view)
end
function RootView:open_doc(doc)
local node = self:get_active_node()
if node.locked and core.last_active_view then
core.set_active_view(core.last_active_view)
node = self:get_active_node()
end
assert(not node.locked, "Cannot open doc on locked node")
for i, view in ipairs(node.views) do
if view.doc == doc then
node:set_active_view(node.views[i])
return view
end
end
local view = DocView(doc)
node:add_view(view)
self.root_node:update_layout()
view:scroll_to_line(view.doc:get_selection(), true, true)
return view
end
function RootView:on_mouse_pressed(button, x, y, clicks)
local div = self.root_node:get_divider_overlapping_point(x, y)
if div then
self.dragged_divider = div
return
end
local node = self.root_node:get_child_overlapping_point(x, y)
local idx = node:get_tab_overlapping_point(x, y)
if idx then
node:set_active_view(node.views[idx])
if button == "middle" then
node:close_active_view(self.root_node)
end
else
core.set_active_view(node.active_view)
node.active_view:on_mouse_pressed(button, x, y, clicks)
end
end
function RootView:on_mouse_released(...)
if self.dragged_divider then
self.dragged_divider = nil
end
self.root_node:on_mouse_released(...)
end
function RootView:on_mouse_moved(x, y, dx, dy)
if self.dragged_divider then
local node = self.dragged_divider
if node.type == "hsplit" then
node.divider = node.divider + dx / node.size.x
else
node.divider = node.divider + dy / node.size.y
end
node.divider = common.clamp(node.divider, 0.01, 0.99)
return
end
self.mouse.x, self.mouse.y = x, y
self.root_node:on_mouse_moved(x, y, dx, dy)
local node = self.root_node:get_child_overlapping_point(x, y)
local div = self.root_node:get_divider_overlapping_point(x, y)
if div then
system.set_cursor(div.type == "hsplit" and "sizeh" or "sizev")
elseif node:get_tab_overlapping_point(x, y) then
system.set_cursor("arrow")
else
system.set_cursor(node.active_view.cursor)
end
end
function RootView:on_mouse_wheel(...)
local x, y = self.mouse.x, self.mouse.y
local node = self.root_node:get_child_overlapping_point(x, y)
node.active_view:on_mouse_wheel(...)
end
function RootView:on_text_input(...)
core.active_view:on_text_input(...)
end
function RootView:update()
copy_position_and_size(self.root_node, self)
self.root_node:update()
self.root_node:update_layout()
end
function RootView:draw()
self.root_node:draw()
while #self.deferred_draws > 0 do
local t = table.remove(self.deferred_draws)
t.fn(table.unpack(t))
end
end
return RootView

@ -0,0 +1,141 @@
local core = require "core"
local common = require "core.common"
local command = require "core.command"
local config = require "core.config"
local style = require "core.style"
local DocView = require "core.docview"
local LogView = require "core.logview"
local View = require "core.view"
local StatusView = View:extend()
StatusView.separator = " "
StatusView.separator2 = " | "
function StatusView:new()
StatusView.super.new(self)
self.message_timeout = 0
self.message = {}
end
function StatusView:on_mouse_pressed()
core.set_active_view(core.last_active_view)
if system.get_time() < self.message_timeout
and not core.active_view:is(LogView) then
command.perform "core:open-log"
end
end
function StatusView:show_message(icon, icon_color, text)
self.message = {
icon_color, style.icon_font, icon,
style.dim, style.font, StatusView.separator2, style.text, text
}
self.message_timeout = system.get_time() + config.message_timeout
end
function StatusView:update()
self.size.y = style.font:get_height() + style.padding.y * 2
if system.get_time() < self.message_timeout then
self.scroll.to.y = self.size.y
else
self.scroll.to.y = 0
end
StatusView.super.update(self)
end
local function draw_items(self, items, x, y, draw_fn)
local font = style.font
local color = style.text
for _, item in ipairs(items) do
if type(item) == "userdata" then
font = item
elseif type(item) == "table" then
color = item
else
x = draw_fn(font, color, item, nil, x, y, 0, self.size.y)
end
end
return x
end
local function text_width(font, _, text, _, x)
return x + font:get_width(text)
end
function StatusView:draw_items(items, right_align, yoffset)
local x, y = self:get_content_offset()
y = y + (yoffset or 0)
if right_align then
local w = draw_items(self, items, 0, 0, text_width)
x = x + self.size.x - w - style.padding.x
draw_items(self, items, x, y, common.draw_text)
else
x = x + style.padding.x
draw_items(self, items, x, y, common.draw_text)
end
end
function StatusView:get_items()
if getmetatable(core.active_view) == DocView then
local dv = core.active_view
local line, col = dv.doc:get_selection()
local dirty = dv.doc:is_dirty()
return {
dirty and style.accent or style.text, style.icon_font, "f",
style.dim, style.font, self.separator2, style.text,
dv.doc.filename and style.text or style.dim, dv.doc:get_name(),
style.text,
self.separator,
"line: ", line,
self.separator,
col > config.line_limit and style.accent or style.text, "col: ", col,
style.text,
self.separator,
string.format("%d%%", line / #dv.doc.lines * 100),
}, {
style.icon_font, "g",
style.font, style.dim, self.separator2, style.text,
#dv.doc.lines, " lines",
self.separator,
dv.doc.crlf and "CRLF" or "LF"
}
end
return {}, {
style.icon_font, "g",
style.font, style.dim, self.separator2,
#core.docs, style.text, " / ",
#core.project_files, " files"
}
end
function StatusView:draw()
self:draw_background(style.background2)
if self.message then
self:draw_items(self.message, false, self.size.y)
end
local left, right = self:get_items()
self:draw_items(left)
self:draw_items(right, true)
end
return StatusView

@ -0,0 +1,26 @@
local strict = {}
strict.defined = {}
-- used to define a global variable
function global(t)
for k, v in pairs(t) do
strict.defined[k] = true
rawset(_G, k, v)
end
end
function strict.__newindex(t, k, v)
error("cannot set undefined variable: " .. k, 2)
end
function strict.__index(t, k)
if not strict.defined[k] then
error("cannot get undefined variable: " .. k, 2)
end
end
setmetatable(_G, strict)

@ -0,0 +1,42 @@
local common = require "core.common"
local style = {}
style.padding = { x = common.round(14 * SCALE), y = common.round(7 * SCALE) }
style.divider_size = common.round(1 * SCALE)
style.scrollbar_size = common.round(4 * SCALE)
style.caret_width = common.round(2 * SCALE)
style.tab_width = common.round(170 * SCALE)
style.font = renderer.font.load(EXEDIR .. "/data/fonts/font.ttf", 14 * SCALE)
style.big_font = renderer.font.load(EXEDIR .. "/data/fonts/font.ttf", 34 * SCALE)
style.icon_font = renderer.font.load(EXEDIR .. "/data/fonts/icons.ttf", 14 * SCALE)
style.code_font = renderer.font.load(EXEDIR .. "/data/fonts/monospace.ttf", 13.5 * SCALE)
style.background = { common.color "#2e2e32" }
style.background2 = { common.color "#252529" }
style.background3 = { common.color "#252529" }
style.text = { common.color "#97979c" }
style.caret = { common.color "#93DDFA" }
style.accent = { common.color "#e1e1e6" }
style.dim = { common.color "#525257" }
style.divider = { common.color "#202024" }
style.selection = { common.color "#48484f" }
style.line_number = { common.color "#525259" }
style.line_number2 = { common.color "#83838f" }
style.line_highlight = { common.color "#343438" }
style.scrollbar = { common.color "#414146" }
style.scrollbar2 = { common.color "#4b4b52" }
style.syntax = {}
style.syntax["normal"] = { common.color "#e1e1e6" }
style.syntax["symbol"] = { common.color "#e1e1e6" }
style.syntax["comment"] = { common.color "#676b6f" }
style.syntax["keyword"] = { common.color "#E58AC9" }
style.syntax["keyword2"] = { common.color "#F77483" }
style.syntax["number"] = { common.color "#FFA94D" }
style.syntax["literal"] = { common.color "#FFA94D" }
style.syntax["string"] = { common.color "#f7c95c" }
style.syntax["operator"] = { common.color "#93DDFA" }
style.syntax["function"] = { common.color "#93DDFA" }
return style

@ -0,0 +1,30 @@
local common = require "core.common"
local syntax = {}
syntax.items = {}
local plain_text_syntax = { patterns = {}, symbols = {} }
function syntax.add(t)
table.insert(syntax.items, t)
end
local function find(string, field)
for i = #syntax.items, 1, -1 do
local t = syntax.items[i]
if common.match_pattern(string, t[field] or {}) then
return t
end
end
end
function syntax.get(filename, header)
return find(filename, "files")
or find(header, "headers")
or plain_text_syntax
end
return syntax

@ -0,0 +1,112 @@
local tokenizer = {}
local function push_token(t, type, text)
local prev_type = t[#t-1]
local prev_text = t[#t]
if prev_type and (prev_type == type or prev_text:find("^%s*$")) then
t[#t-1] = type
t[#t] = prev_text .. text
else
table.insert(t, type)
table.insert(t, text)
end
end
local function is_escaped(text, idx, esc)
local byte = esc:byte()
local count = 0
for i = idx - 1, 1, -1 do
if text:byte(i) ~= byte then break end
count = count + 1
end
return count % 2 == 1
end
local function find_non_escaped(text, pattern, offset, esc)
while true do
local s, e = text:find(pattern, offset)
if not s then break end
if esc and is_escaped(text, s, esc) then
offset = e + 1
else
return s, e
end
end
end
function tokenizer.tokenize(syntax, text, state)
local res = {}
local i = 1
if #syntax.patterns == 0 then
return { "normal", text }
end
while i <= #text do
-- continue trying to match the end pattern of a pair if we have a state set
if state then
local p = syntax.patterns[state]
local s, e = find_non_escaped(text, p.pattern[2], i, p.pattern[3])
if s then
push_token(res, p.type, text:sub(i, e))
state = nil
i = e + 1
else
push_token(res, p.type, text:sub(i))
break
end
end
-- find matching pattern
local matched = false
for n, p in ipairs(syntax.patterns) do
local pattern = (type(p.pattern) == "table") and p.pattern[1] or p.pattern
local s, e = text:find("^" .. pattern, i)
if s then
-- matched pattern; make and add token
local t = text:sub(s, e)
push_token(res, syntax.symbols[t] or p.type, t)
-- update state if this was a start|end pattern pair
if type(p.pattern) == "table" then
state = n
end
-- move cursor past this token
i = e + 1
matched = true
break
end
end
-- consume character if we didn't match
if not matched then
push_token(res, "normal", text:sub(i, i))
i = i + 1
end
end
return res, state
end
local function iter(t, i)
i = i + 2
local type, text = t[i], t[i+1]
if type then
return i, type, text
end
end
function tokenizer.each_token(t)
return iter, t, -1
end
return tokenizer

@ -0,0 +1,151 @@
local core = require "core"
local config = require "core.config"
local style = require "core.style"
local common = require "core.common"
local Object = require "core.object"
local View = Object:extend()
function View:new()
self.position = { x = 0, y = 0 }
self.size = { x = 0, y = 0 }
self.scroll = { x = 0, y = 0, to = { x = 0, y = 0 } }
self.cursor = "arrow"
self.scrollable = false
end
function View:move_towards(t, k, dest, rate)
if type(t) ~= "table" then
return self:move_towards(self, t, k, dest, rate)
end
local val = t[k]
if math.abs(val - dest) < 0.5 then
t[k] = dest
else
t[k] = common.lerp(val, dest, rate or 0.5)
end
if val ~= dest then
core.redraw = true
end
end
function View:try_close(do_close)
do_close()
end
function View:get_name()
return "---"
end
function View:get_scrollable_size()
return math.huge
end
function View:get_scrollbar_rect()
local sz = self:get_scrollable_size()
if sz <= self.size.y or sz == math.huge then
return 0, 0, 0, 0
end
local h = math.max(20, self.size.y * self.size.y / sz)
return
self.position.x + self.size.x - style.scrollbar_size,
self.position.y + self.scroll.y * (self.size.y - h) / (sz - self.size.y),
style.scrollbar_size,
h
end
function View:scrollbar_overlaps_point(x, y)
local sx, sy, sw, sh = self:get_scrollbar_rect()
return x >= sx - sw * 3 and x < sx + sw and y >= sy and y < sy + sh
end
function View:on_mouse_pressed(button, x, y, clicks)
if self:scrollbar_overlaps_point(x, y) then
self.dragging_scrollbar = true
return true
end
end
function View:on_mouse_released(button, x, y)
self.dragging_scrollbar = false
end
function View:on_mouse_moved(x, y, dx, dy)
if self.dragging_scrollbar then
local delta = self:get_scrollable_size() / self.size.y * dy
self.scroll.to.y = self.scroll.to.y + delta
end
self.hovered_scrollbar = self:scrollbar_overlaps_point(x, y)
end
function View:on_text_input(text)
-- no-op
end
function View:on_mouse_wheel(y)
if self.scrollable then
self.scroll.to.y = self.scroll.to.y + y * -config.mouse_wheel_scroll
end
end
function View:get_content_bounds()
local x = self.scroll.x
local y = self.scroll.y
return x, y, x + self.size.x, y + self.size.y
end
function View:get_content_offset()
local x = common.round(self.position.x - self.scroll.x)
local y = common.round(self.position.y - self.scroll.y)
return x, y
end
function View:clamp_scroll_position()
local max = self:get_scrollable_size() - self.size.y
self.scroll.to.y = common.clamp(self.scroll.to.y, 0, max)
end
function View:update()
self:clamp_scroll_position()
self:move_towards(self.scroll, "x", self.scroll.to.x, 0.3)
self:move_towards(self.scroll, "y", self.scroll.to.y, 0.3)
end
function View:draw_background(color)
local x, y = self.position.x, self.position.y
local w, h = self.size.x, self.size.y
renderer.draw_rect(x, y, w + x % 1, h + y % 1, color)
end
function View:draw_scrollbar()
local x, y, w, h = self:get_scrollbar_rect()
local highlight = self.hovered_scrollbar or self.dragging_scrollbar
local color = highlight and style.scrollbar2 or style.scrollbar
renderer.draw_rect(x, y, w, h, color)
end
function View:draw()
end
return View

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@ -0,0 +1,284 @@
local core = require "core"
local common = require "core.common"
local config = require "core.config"
local command = require "core.command"
local style = require "core.style"
local keymap = require "core.keymap"
local translate = require "core.doc.translate"
local RootView = require "core.rootview"
local DocView = require "core.docview"
config.autocomplete_max_suggestions = 6
local autocomplete = {}
autocomplete.map = {}
local mt = { __tostring = function(t) return t.text end }
function autocomplete.add(t)
local items = {}
for text, info in pairs(t.items) do
info = (type(info) == "string") and info
table.insert(items, setmetatable({ text = text, info = info }, mt))
end
autocomplete.map[t.name] = { files = t.files or ".*", items = items }
end
core.add_thread(function()
local cache = setmetatable({}, { __mode = "k" })
local function get_symbols(doc)
local i = 1
local s = {}
while i < #doc.lines do
for sym in doc.lines[i]:gmatch(config.symbol_pattern) do
s[sym] = true
end
i = i + 1
if i % 100 == 0 then coroutine.yield() end
end
return s
end
local function cache_is_valid(doc)
local c = cache[doc]
return c and c.last_change_id == doc:get_change_id()
end
while true do
local symbols = {}
-- lift all symbols from all docs
for _, doc in ipairs(core.docs) do
-- update the cache if the doc has changed since the last iteration
if not cache_is_valid(doc) then
cache[doc] = {
last_change_id = doc:get_change_id(),
symbols = get_symbols(doc)
}
end
-- update symbol set with doc's symbol set
for sym in pairs(cache[doc].symbols) do
symbols[sym] = true
end
coroutine.yield()
end
-- update symbols list
autocomplete.add { name = "open-docs", items = symbols }
-- wait for next scan
local valid = true
while valid do
coroutine.yield(1)
for _, doc in ipairs(core.docs) do
if not cache_is_valid(doc) then
valid = false
end
end
end
end
end)
local partial = ""
local suggestions_idx = 1
local suggestions = {}
local last_line, last_col
local function reset_suggestions()
suggestions_idx = 1
suggestions = {}
end
local function update_suggestions()
local doc = core.active_view.doc
local filename = doc and doc.filename or ""
-- get all relevant suggestions for given filename
local items = {}
for _, v in pairs(autocomplete.map) do
if common.match_pattern(filename, v.files) then
for _, item in pairs(v.items) do
table.insert(items, item)
end
end
end
-- fuzzy match, remove duplicates and store
items = common.fuzzy_match(items, partial)
local j = 1
for i = 1, config.autocomplete_max_suggestions do
suggestions[i] = items[j]
while items[j] and items[i].text == items[j].text do
items[i].info = items[i].info or items[j].info
j = j + 1
end
end
end
local function get_partial_symbol()
local doc = core.active_view.doc
local line2, col2 = doc:get_selection()
local line1, col1 = doc:position_offset(line2, col2, translate.start_of_word)
return doc:get_text(line1, col1, line2, col2)
end
local function get_active_view()
if getmetatable(core.active_view) == DocView then
return core.active_view
end
end
local function get_suggestions_rect(av)
if #suggestions == 0 then
return 0, 0, 0, 0
end
local line, col = av.doc:get_selection()
local x, y = av:get_line_screen_position(line)
x = x + av:get_col_x_offset(line, col - #partial)
y = y + av:get_line_height() + style.padding.y
local font = av:get_font()
local th = font:get_height()
local max_width = 0
for _, s in ipairs(suggestions) do
local w = font:get_width(s.text)
if s.info then
w = w + style.font:get_width(s.info) + style.padding.x
end
max_width = math.max(max_width, w)
end
return
x - style.padding.x,
y - style.padding.y,
max_width + style.padding.x * 2,
#suggestions * (th + style.padding.y) + style.padding.y
end
local function draw_suggestions_box(av)
-- draw background rect
local rx, ry, rw, rh = get_suggestions_rect(av)
renderer.draw_rect(rx, ry, rw, rh, style.background3)
-- draw text
local font = av:get_font()
local lh = font:get_height() + style.padding.y
local y = ry + style.padding.y / 2
for i, s in ipairs(suggestions) do
local color = (i == suggestions_idx) and style.accent or style.text
common.draw_text(font, color, s.text, "left", rx + style.padding.x, y, rw, lh)
if s.info then
color = (i == suggestions_idx) and style.text or style.dim
common.draw_text(style.font, color, s.info, "right", rx, y, rw - style.padding.x, lh)
end
y = y + lh
end
end
-- patch event logic into RootView
local on_text_input = RootView.on_text_input
local update = RootView.update
local draw = RootView.draw
RootView.on_text_input = function(...)
on_text_input(...)
local av = get_active_view()
if av then
-- update partial symbol and suggestions
partial = get_partial_symbol()
if #partial >= 3 then
update_suggestions()
last_line, last_col = av.doc:get_selection()
else
reset_suggestions()
end
-- scroll if rect is out of bounds of view
local _, y, _, h = get_suggestions_rect(av)
local limit = av.position.y + av.size.y
if y + h > limit then
av.scroll.to.y = av.scroll.y + y + h - limit
end
end
end
RootView.update = function(...)
update(...)
local av = get_active_view()
if av then
-- reset suggestions if caret was moved
local line, col = av.doc:get_selection()
if line ~= last_line or col ~= last_col then
reset_suggestions()
end
end
end
RootView.draw = function(...)
draw(...)
local av = get_active_view()
if av then
-- draw suggestions box after everything else
core.root_view:defer_draw(draw_suggestions_box, av)
end
end
local function predicate()
return get_active_view() and #suggestions > 0
end
command.add(predicate, {
["autocomplete:complete"] = function()
local doc = core.active_view.doc
local line, col = doc:get_selection()
local text = suggestions[suggestions_idx].text
doc:insert(line, col, text)
doc:remove(line, col, line, col - #partial)
doc:set_selection(line, col + #text - #partial)
reset_suggestions()
end,
["autocomplete:previous"] = function()
suggestions_idx = math.max(suggestions_idx - 1, 1)
end,
["autocomplete:next"] = function()
suggestions_idx = math.min(suggestions_idx + 1, #suggestions)
end,
["autocomplete:cancel"] = function()
reset_suggestions()
end,
})
keymap.add {
["tab"] = "autocomplete:complete",
["up"] = "autocomplete:previous",
["down"] = "autocomplete:next",
["escape"] = "autocomplete:cancel",
}
return autocomplete

@ -0,0 +1,61 @@
local core = require "core"
local config = require "core.config"
local Doc = require "core.doc"
local times = setmetatable({}, { __mode = "k" })
local function update_time(doc)
local info = system.get_file_info(doc.filename)
times[doc] = info.modified
end
local function reload_doc(doc)
local fp = io.open(doc.filename, "r")
local text = fp:read("*a")
fp:close()
local sel = { doc:get_selection() }
doc:remove(1, 1, math.huge, math.huge)
doc:insert(1, 1, text:gsub("\r", ""):gsub("\n$", ""))
doc:set_selection(table.unpack(sel))
update_time(doc)
doc:clean()
core.log_quiet("Auto-reloaded doc \"%s\"", doc.filename)
end
core.add_thread(function()
while true do
-- check all doc modified times
for _, doc in ipairs(core.docs) do
local info = system.get_file_info(doc.filename or "")
if info and times[doc] ~= info.modified then
reload_doc(doc)
end
coroutine.yield()
end
-- wait for next scan
coroutine.yield(config.project_scan_rate)
end
end)
-- patch `Doc.save|load` to store modified time
local load = Doc.load
local save = Doc.save
Doc.load = function(self, ...)
local res = load(self, ...)
update_time(self)
return res
end
Doc.save = function(self, ...)
local res = save(self, ...)
update_time(self)
return res
end

@ -0,0 +1,59 @@
local syntax = require "core.syntax"
syntax.add {
files = { "%.c$", "%.h$", "%.inl$", "%.cpp$", "%.hpp$" },
comment = "//",
patterns = {
{ pattern = "//.-\n", type = "comment" },
{ pattern = { "/%*", "%*/" }, type = "comment" },
{ pattern = { "#", "[^\\]\n" }, type = "comment" },
{ pattern = { '"', '"', '\\' }, type = "string" },
{ pattern = { "'", "'", '\\' }, type = "string" },
{ pattern = "-?0x%x+", type = "number" },
{ pattern = "-?%d+[%d%.eE]*f?", type = "number" },
{ pattern = "-?%.?%d+f?", type = "number" },
{ pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
{ pattern = "[%a_][%w_]*%f[(]", type = "function" },
{ pattern = "[%a_][%w_]*", type = "symbol" },
},
symbols = {
["if"] = "keyword",
["then"] = "keyword",
["else"] = "keyword",
["elseif"] = "keyword",
["do"] = "keyword",
["while"] = "keyword",
["for"] = "keyword",
["break"] = "keyword",
["continue"] = "keyword",
["return"] = "keyword",
["goto"] = "keyword",
["struct"] = "keyword",
["union"] = "keyword",
["typedef"] = "keyword",
["enum"] = "keyword",
["extern"] = "keyword",
["static"] = "keyword",
["volatile"] = "keyword",
["const"] = "keyword",
["inline"] = "keyword",
["switch"] = "keyword",
["case"] = "keyword",
["default"] = "keyword",
["auto"] = "keyword",
["const"] = "keyword",
["void"] = "keyword",
["int"] = "keyword2",
["short"] = "keyword2",
["long"] = "keyword2",
["float"] = "keyword2",
["double"] = "keyword2",
["char"] = "keyword2",
["unsigned"] = "keyword2",
["bool"] = "keyword2",
["true"] = "literal",
["false"] = "literal",
["NULL"] = "literal",
},
}

@ -0,0 +1,23 @@
local syntax = require "core.syntax"
syntax.add {
files = { "%.css$" },
patterns = {
{ pattern = "\\.", type = "normal" },
{ pattern = "//.-\n", type = "comment" },
{ pattern = { "/%*", "%*/" }, type = "comment" },
{ pattern = { '"', '"', '\\' }, type = "string" },
{ pattern = { "'", "'", '\\' }, type = "string" },
{ pattern = "[%a][%w-]*%s*%f[:]", type = "keyword" },
{ pattern = "#%x+", type = "string" },
{ pattern = "-?%d+[%d%.]*p[xt]", type = "number" },
{ pattern = "-?%d+[%d%.]*deg", type = "number" },
{ pattern = "-?%d+[%d%.]*", type = "number" },
{ pattern = "[%a_][%w_]*", type = "symbol" },
{ pattern = "#[%a][%w_-]*", type = "keyword2" },
{ pattern = "@[%a][%w_-]*", type = "keyword2" },
{ pattern = "%.[%a][%w_-]*", type = "keyword2" },
{ pattern = "[{}:]", type = "operator" },
},
symbols = {},
}

@ -0,0 +1,67 @@
local syntax = require "core.syntax"
syntax.add {
files = { "%.js$", "%.json$", "%.cson$" },
comment = "//",
patterns = {
{ pattern = "//.-\n", type = "comment" },
{ pattern = { "/%*", "%*/" }, type = "comment" },
{ pattern = { '"', '"', '\\' }, type = "string" },
{ pattern = { "'", "'", '\\' }, type = "string" },
{ pattern = { "`", "`", '\\' }, type = "string" },
{ pattern = "0x[%da-fA-F]+", type = "number" },
{ pattern = "-?%d+[%d%.eE]*", type = "number" },
{ pattern = "-?%.?%d+", type = "number" },
{ pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
{ pattern = "[%a_][%w_]*%f[(]", type = "function" },
{ pattern = "[%a_][%w_]*", type = "symbol" },
},
symbols = {
["async"] = "keyword",
["await"] = "keyword",
["break"] = "keyword",
["case"] = "keyword",
["catch"] = "keyword",
["class"] = "keyword",
["const"] = "keyword",
["continue"] = "keyword",
["debugger"] = "keyword",
["default"] = "keyword",
["delete"] = "keyword",
["do"] = "keyword",
["else"] = "keyword",
["export"] = "keyword",
["extends"] = "keyword",
["finally"] = "keyword",
["for"] = "keyword",
["function"] = "keyword",
["get"] = "keyword",
["if"] = "keyword",
["import"] = "keyword",
["in"] = "keyword",
["instanceof"] = "keyword",
["let"] = "keyword",
["new"] = "keyword",
["return"] = "keyword",
["set"] = "keyword",
["static"] = "keyword",
["super"] = "keyword",
["switch"] = "keyword",
["throw"] = "keyword",
["try"] = "keyword",
["typeof"] = "keyword",
["var"] = "keyword",
["void"] = "keyword",
["while"] = "keyword",
["with"] = "keyword",
["yield"] = "keyword",
["true"] = "literal",
["false"] = "literal",
["null"] = "literal",
["undefined"] = "literal",
["arguments"] = "keyword2",
["Infinity"] = "keyword2",
["NaN"] = "keyword2",
["this"] = "keyword2",
},
}

@ -0,0 +1,50 @@
local syntax = require "core.syntax"
syntax.add {
files = "%.lua$",
headers = "^#!.*[ /]lua",
comment = "--",
patterns = {
{ pattern = { '"', '"', '\\' }, type = "string" },
{ pattern = { "'", "'", '\\' }, type = "string" },
{ pattern = { "%[%[", "%]%]" }, type = "string" },
{ pattern = { "%-%-%[%[", "%]%]"}, type = "comment" },
{ pattern = "%-%-.-\n", type = "comment" },
{ pattern = "-?0x%x+", type = "number" },
{ pattern = "-?%d+[%d%.eE]*", type = "number" },
{ pattern = "-?%.?%d+", type = "number" },
{ pattern = "<%a+>", type = "keyword2" },
{ pattern = "%.%.%.?", type = "operator" },
{ pattern = "[<>~=]=", type = "operator" },
{ pattern = "[%+%-=/%*%^%%#<>]", type = "operator" },
{ pattern = "[%a_][%w_]*%s*%f[(\"{]", type = "function" },
{ pattern = "[%a_][%w_]*", type = "symbol" },
{ pattern = "::[%a_][%w_]*::", type = "function" },
},
symbols = {
["if"] = "keyword",
["then"] = "keyword",
["else"] = "keyword",
["elseif"] = "keyword",
["end"] = "keyword",
["do"] = "keyword",
["function"] = "keyword",
["repeat"] = "keyword",
["until"] = "keyword",
["while"] = "keyword",
["for"] = "keyword",
["break"] = "keyword",
["return"] = "keyword",
["local"] = "keyword",
["in"] = "keyword",
["not"] = "keyword",
["and"] = "keyword",
["or"] = "keyword",
["goto"] = "keyword",
["self"] = "keyword2",
["true"] = "literal",
["false"] = "literal",
["nil"] = "literal",
},
}

@ -0,0 +1,17 @@
local syntax = require "core.syntax"
syntax.add {
files = { "Makefile", "makefile", "%.mk$" },
comment = "#",
patterns = {
{ pattern = "#.*\n", type = "comment" },
{ pattern = [[\.]], type = "normal" },
{ pattern = "$[@^<%%?+|*]", type = "keyword2" },
{ pattern = "$%(.-%)", type = "variable" },
{ pattern = "%f[%w_][%d%.]+%f[^%w_]", type = "number" },
{ pattern = "%..*:", type = "keyword2" },
{ pattern = ".*:", type = "function" },
},
symbols = {
},
}

@ -0,0 +1,21 @@
local syntax = require "core.syntax"
syntax.add {
files = { "%.md$", "%.markdown$" },
patterns = {
{ pattern = "\\.", type = "normal" },
{ pattern = { "<!%-%-", "%-%->" }, type = "comment" },
{ pattern = { "```", "```" }, type = "string" },
{ pattern = { "``", "``", "\\" }, type = "string" },
{ pattern = { "`", "`", "\\" }, type = "string" },
{ pattern = { "~~", "~~", "\\" }, type = "keyword2" },
{ pattern = "%-%-%-+", type = "comment" },
{ pattern = "%*%s+", type = "operator" },
{ pattern = { "%*", "[%*\n]", "\\" }, type = "operator" },
{ pattern = { "%_", "[%_\n]", "\\" }, type = "keyword2" },
{ pattern = "#.-\n", type = "keyword" },
{ pattern = "!?%[.-%]%(.-%)", type = "function" },
{ pattern = "https?://%S+", type = "function" },
},
symbols = { },
}

@ -0,0 +1,55 @@
local syntax = require "core.syntax"
syntax.add {
files = { "%.py$", "%.pyw$" },
headers = "^#!.*[ /]python",
comment = "#",
patterns = {
{ pattern = { "#", "\n" }, type = "comment" },
{ pattern = { '[ruU]?"', '"', '\\' }, type = "string" },
{ pattern = { "[ruU]?'", "'", '\\' }, type = "string" },
{ pattern = { '"""', '"""' }, type = "string" },
{ pattern = "0x[%da-fA-F]+", type = "number" },
{ pattern = "-?%d+[%d%.eE]*", type = "number" },
{ pattern = "-?%.?%d+", type = "number" },
{ pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
{ pattern = "[%a_][%w_]*%f[(]", type = "function" },
{ pattern = "[%a_][%w_]*", type = "symbol" },
},
symbols = {
["class"] = "keyword",
["finally"] = "keyword",
["is"] = "keyword",
["return"] = "keyword",
["continue"] = "keyword",
["for"] = "keyword",
["lambda"] = "keyword",
["try"] = "keyword",
["def"] = "keyword",
["from"] = "keyword",
["nonlocal"] = "keyword",
["while"] = "keyword",
["and"] = "keyword",
["global"] = "keyword",
["not"] = "keyword",
["with"] = "keyword",
["as"] = "keyword",
["elif"] = "keyword",
["if"] = "keyword",
["or"] = "keyword",
["else"] = "keyword",
["import"] = "keyword",
["pass"] = "keyword",
["break"] = "keyword",
["except"] = "keyword",
["in"] = "keyword",
["del"] = "keyword",
["raise"] = "keyword",
["yield"] = "keyword",
["assert"] = "keyword",
["self"] = "keyword2",
["None"] = "literal",
["True"] = "literal",
["False"] = "literal",
}
}

@ -0,0 +1,21 @@
local syntax = require "core.syntax"
syntax.add {
files = { "%.xml$", "%.html?$" },
headers = "<%?xml",
patterns = {
{ pattern = { "<!%-%-", "%-%->" }, type = "comment" },
{ pattern = { '%f[^>][^<]', '%f[<]' }, type = "normal" },
{ pattern = { '"', '"', '\\' }, type = "string" },
{ pattern = { "'", "'", '\\' }, type = "string" },
{ pattern = "0x[%da-fA-F]+", type = "number" },
{ pattern = "-?%d+[%d%.]*f?", type = "number" },
{ pattern = "-?%.?%d+f?", type = "number" },
{ pattern = "%f[^<]![%a_][%w_]*", type = "keyword2" },
{ pattern = "%f[^<][%a_][%w_]*", type = "function" },
{ pattern = "%f[^<]/[%a_][%w_]*", type = "function" },
{ pattern = "[%a_][%w_]*", type = "keyword" },
{ pattern = "[/<>=]", type = "operator" },
},
symbols = {},
}

@ -0,0 +1,69 @@
local core = require "core"
local command = require "core.command"
local keymap = require "core.keymap"
local handled_events = {
["keypressed"] = true,
["keyreleased"] = true,
["textinput"] = true,
}
local state = "stopped"
local event_buffer = {}
local modkeys = {}
local on_event = core.on_event
core.on_event = function(type, ...)
local res = on_event(type, ...)
if state == "recording" and handled_events[type] then
table.insert(event_buffer, { type, ... })
end
return res
end
local function clone(t)
local res = {}
for k, v in pairs(t) do res[k] = v end
return res
end
local function predicate()
return state ~= "playing"
end
command.add(predicate, {
["macro:toggle-record"] = function()
if state == "stopped" then
state = "recording"
event_buffer = {}
modkeys = clone(keymap.modkeys)
core.log("Recording macro...")
else
state = "stopped"
core.log("Stopped recording macro (%d events)", #event_buffer)
end
end,
["macro:play"] = function()
state = "playing"
core.log("Playing macro... (%d events)", #event_buffer)
local mk = keymap.modkeys
keymap.modkeys = clone(modkeys)
for _, ev in ipairs(event_buffer) do
on_event(table.unpack(ev))
core.root_view:update()
end
keymap.modkeys = mk
state = "stopped"
end,
})
keymap.add {
["ctrl+shift+;"] = "macro:toggle-record",
["ctrl+;"] = "macro:play",
}

@ -0,0 +1,271 @@
local core = require "core"
local common = require "core.common"
local keymap = require "core.keymap"
local command = require "core.command"
local style = require "core.style"
local View = require "core.view"
local ResultsView = View:extend()
function ResultsView:new(text, fn)
ResultsView.super.new(self)
self.scrollable = true
self.brightness = 0
self:begin_search(text, fn)
end
function ResultsView:get_name()
return "Search Results"
end
local function find_all_matches_in_file(t, filename, fn)
local fp = io.open(filename)
if not fp then return t end
local n = 1
for line in fp:lines() do
local s = fn(line)
if s then
table.insert(t, { file = filename, text = line, line = n, col = s })
core.redraw = true
end
if n % 100 == 0 then coroutine.yield() end
n = n + 1
core.redraw = true
end
fp:close()
end
function ResultsView:begin_search(text, fn)
self.search_args = { text, fn }
self.results = {}
self.last_file_idx = 1
self.query = text
self.searching = true
self.selected_idx = 0
core.add_thread(function()
for i, file in ipairs(core.project_files) do
if file.type == "file" then
find_all_matches_in_file(self.results, file.filename, fn)
end
self.last_file_idx = i
end
self.searching = false
self.brightness = 100
core.redraw = true
end, self.results)
self.scroll.to.y = 0
end
function ResultsView:refresh()
self:begin_search(table.unpack(self.search_args))
end
function ResultsView:on_mouse_moved(mx, my, ...)
ResultsView.super.on_mouse_moved(self, mx, my, ...)
self.selected_idx = 0
for i, item, x,y,w,h in self:each_visible_result() do
if mx >= x and my >= y and mx < x + w and my < y + h then
self.selected_idx = i
break
end
end
end
function ResultsView:on_mouse_pressed(...)
local caught = ResultsView.super.on_mouse_pressed(self, ...)
if not caught then
self:open_selected_result()
end
end
function ResultsView:open_selected_result()
local res = self.results[self.selected_idx]
if not res then
return
end
core.try(function()
local dv = core.root_view:open_doc(core.open_doc(res.file))
core.root_view.root_node:update_layout()
dv.doc:set_selection(res.line, res.col)
dv:scroll_to_line(res.line, false, true)
end)
end
function ResultsView:update()
self:move_towards("brightness", 0, 0.1)
ResultsView.super.update(self)
end
function ResultsView:get_results_yoffset()
return style.font:get_height() + style.padding.y * 3
end
function ResultsView:get_line_height()
return style.padding.y + style.font:get_height()
end
function ResultsView:get_scrollable_size()
return self:get_results_yoffset() + #self.results * self:get_line_height()
end
function ResultsView:get_visible_results_range()
local lh = self:get_line_height()
local oy = self:get_results_yoffset()
local min = math.max(1, math.floor((self.scroll.y - oy) / lh))
return min, min + math.floor(self.size.y / lh) + 1
end
function ResultsView:each_visible_result()
return coroutine.wrap(function()
local lh = self:get_line_height()
local x, y = self:get_content_offset()
local min, max = self:get_visible_results_range()
y = y + self:get_results_yoffset() + lh * (min - 1)
for i = min, max do
local item = self.results[i]
if not item then break end
coroutine.yield(i, item, x, y, self.size.x, lh)
y = y + lh
end
end)
end
function ResultsView:scroll_to_make_selected_visible()
local h = self:get_line_height()
local y = self:get_results_yoffset() + h * (self.selected_idx - 1)
self.scroll.to.y = math.min(self.scroll.to.y, y)
self.scroll.to.y = math.max(self.scroll.to.y, y + h - self.size.y)
end
function ResultsView:draw()
self:draw_background(style.background)
-- status
local ox, oy = self:get_content_offset()
local x, y = ox + style.padding.x, oy + style.padding.y
local per = self.last_file_idx / #core.project_files
local text
if self.searching then
text = string.format("Searching %d%% (%d of %d files, %d matches) for %q...",
per * 100, self.last_file_idx, #core.project_files,
#self.results, self.query)
else
text = string.format("Found %d matches for %q",
#self.results, self.query)
end
local color = common.lerp(style.text, style.accent, self.brightness / 100)
renderer.draw_text(style.font, text, x, y, color)
-- horizontal line
local yoffset = self:get_results_yoffset()
local x = ox + style.padding.x
local w = self.size.x - style.padding.x * 2
local h = style.divider_size
local color = common.lerp(style.dim, style.text, self.brightness / 100)
renderer.draw_rect(x, oy + yoffset - style.padding.y, w, h, color)
if self.searching then
renderer.draw_rect(x, oy + yoffset - style.padding.y, w * per, h, style.text)
end
-- results
local y1, y2 = self.position.y, self.position.y + self.size.y
for i, item, x,y,w,h in self:each_visible_result() do
local color = style.text
if i == self.selected_idx then
color = style.accent
renderer.draw_rect(x, y, w, h, style.line_highlight)
end
x = x + style.padding.x
local text = string.format("%s at line %d (col %d): ", item.file, item.line, item.col)
x = common.draw_text(style.font, style.dim, text, "left", x, y, w, h)
x = common.draw_text(style.code_font, color, item.text, "left", x, y, w, h)
end
self:draw_scrollbar()
end
local function begin_search(text, fn)
if text == "" then
core.error("Expected non-empty string")
return
end
local rv = ResultsView(text, fn)
core.root_view:get_active_node():add_view(rv)
end
command.add(nil, {
["project-search:find"] = function()
core.command_view:enter("Find Text In Project", function(text)
text = text:lower()
begin_search(text, function(line_text)
return line_text:lower():find(text, nil, true)
end)
end)
end,
["project-search:find-pattern"] = function()
core.command_view:enter("Find Pattern In Project", function(text)
begin_search(text, function(line_text) return line_text:find(text) end)
end)
end,
["project-search:fuzzy-find"] = function()
core.command_view:enter("Fuzzy Find Text In Project", function(text)
begin_search(text, function(line_text)
return common.fuzzy_match(line_text, text) and 1
end)
end)
end,
})
command.add(ResultsView, {
["project-search:select-previous"] = function()
local view = core.active_view
view.selected_idx = math.max(view.selected_idx - 1, 1)
view:scroll_to_make_selected_visible()
end,
["project-search:select-next"] = function()
local view = core.active_view
view.selected_idx = math.min(view.selected_idx + 1, #view.results)
view:scroll_to_make_selected_visible()
end,
["project-search:open-selected"] = function()
core.active_view:open_selected_result()
end,
["project-search:refresh"] = function()
core.active_view:refresh()
end,
})
keymap.add {
["f5"] = "project-search:refresh",
["ctrl+shift+f"] = "project-search:find",
["up"] = "project-search:select-previous",
["down"] = "project-search:select-next",
["return"] = "project-search:open-selected",
}

@ -0,0 +1,30 @@
local core = require "core"
local command = require "core.command"
local keymap = require "core.keymap"
local escapes = {
["\\"] = "\\\\",
["\""] = "\\\"",
["\n"] = "\\n",
["\r"] = "\\r",
["\t"] = "\\t",
["\b"] = "\\b",
}
local function replace(chr)
return escapes[chr] or string.format("\\x%02x", chr:byte())
end
command.add("core.docview", {
["quote:quote"] = function()
core.active_view.doc:replace(function(text)
return '"' .. text:gsub("[\0-\31\\\"]", replace) .. '"'
end)
end,
})
keymap.add {
["ctrl+'"] = "quote:quote",
}

@ -0,0 +1,63 @@
local core = require "core"
local config = require "core.config"
local command = require "core.command"
local keymap = require "core.keymap"
local function wordwrap_text(text, limit)
local t = {}
local n = 0
for word in text:gmatch("%S+") do
if n + #word > limit then
table.insert(t, "\n")
n = 0
elseif #t > 0 then
table.insert(t, " ")
end
table.insert(t, word)
n = n + #word + 1
end
return table.concat(t)
end
command.add("core.docview", {
["reflow:reflow"] = function()
local doc = core.active_view.doc
doc:replace(function(text)
local prefix_set = "[^%w\n%[%](){}`'\"]*"
-- get line prefix and trailing whitespace
local prefix1 = text:match("^\n*" .. prefix_set)
local prefix2 = text:match("\n(" .. prefix_set .. ")", #prefix1+1)
local trailing = text:match("%s*$")
if not prefix2 or prefix2 == "" then
prefix2 = prefix1
end
-- strip all line prefixes and trailing whitespace
text = text:sub(#prefix1+1, -#trailing - 1):gsub("\n" .. prefix_set, "\n")
-- split into blocks, wordwrap and join
local line_limit = config.line_limit - #prefix1
local blocks = {}
text = text:gsub("\n\n", "\0")
for block in text:gmatch("%Z+") do
table.insert(blocks, wordwrap_text(block, line_limit))
end
text = table.concat(blocks, "\n\n")
-- add prefix to start of lines
text = prefix1 .. text:gsub("\n", "\n" .. prefix2) .. trailing
return text
end)
end,
})
keymap.add {
["ctrl+shift+q"] = "reflow:reflow"
}

@ -0,0 +1,60 @@
local core = require "core"
local command = require "core.command"
local translate = require "core.doc.translate"
local function gmatch_to_array(text, ptn)
local res = {}
for x in text:gmatch(ptn) do
table.insert(res, x)
end
return res
end
local function tabularize_lines(lines, delim)
local rows = {}
local cols = {}
-- split lines at delimiters and get maximum width of columns
local ptn = "[^" .. delim:sub(1,1):gsub("%W", "%%%1") .. "]+"
for i, line in ipairs(lines) do
rows[i] = gmatch_to_array(line, ptn)
for j, col in ipairs(rows[i]) do
cols[j] = math.max(#col, cols[j] or 0)
end
end
-- pad columns with space
for _, row in ipairs(rows) do
for i = 1, #row - 1 do
row[i] = row[i] .. string.rep(" ", cols[i] - #row[i])
end
end
-- write columns back to lines array
for i, line in ipairs(lines) do
lines[i] = table.concat(rows[i], delim)
end
end
command.add("core.docview", {
["tabularize:tabularize"] = function()
core.command_view:enter("Tabularize On Delimiter", function(delim)
if delim == "" then delim = " " end
local doc = core.active_view.doc
local line1, col1, line2, col2, swap = doc:get_selection(true)
line1, col1 = doc:position_offset(line1, col1, translate.start_of_line)
line2, col2 = doc:position_offset(line2, col2, translate.end_of_line)
doc:set_selection(line1, col1, line2, col2, swap)
doc:replace(function(text)
local lines = gmatch_to_array(text, "[^\n]*\n?")
tabularize_lines(lines, delim)
return table.concat(lines)
end)
end)
end,
})

@ -0,0 +1,197 @@
local core = require "core"
local common = require "core.common"
local command = require "core.command"
local config = require "core.config"
local keymap = require "core.keymap"
local style = require "core.style"
local View = require "core.view"
config.treeview_size = 200 * SCALE
local function get_depth(filename)
local n = 0
for sep in filename:gmatch("[\\/]") do
n = n + 1
end
return n
end
local TreeView = View:extend()
function TreeView:new()
TreeView.super.new(self)
self.scrollable = true
self.visible = true
self.init_size = true
self.cache = {}
end
function TreeView:get_cached(item)
local t = self.cache[item.filename]
if not t then
t = {}
t.filename = item.filename
t.abs_filename = system.absolute_path(item.filename)
t.name = t.filename:match("[^\\/]+$")
t.depth = get_depth(t.filename)
t.type = item.type
self.cache[t.filename] = t
end
return t
end
function TreeView:get_name()
return "Project"
end
function TreeView:get_item_height()
return style.font:get_height() + style.padding.y
end
function TreeView:check_cache()
-- invalidate cache's skip values if project_files has changed
if core.project_files ~= self.last_project_files then
for _, v in pairs(self.cache) do
v.skip = nil
end
self.last_project_files = core.project_files
end
end
function TreeView:each_item()
return coroutine.wrap(function()
self:check_cache()
local ox, oy = self:get_content_offset()
local y = oy + style.padding.y
local w = self.size.x
local h = self:get_item_height()
local i = 1
while i <= #core.project_files do
local item = core.project_files[i]
local cached = self:get_cached(item)
coroutine.yield(cached, ox, y, w, h)
y = y + h
i = i + 1
if not cached.expanded then
if cached.skip then
i = cached.skip
else
local depth = cached.depth
while i <= #core.project_files do
local filename = core.project_files[i].filename
if get_depth(filename) <= depth then break end
i = i + 1
end
cached.skip = i
end
end
end
end)
end
function TreeView:on_mouse_moved(px, py)
self.hovered_item = nil
for item, x,y,w,h in self:each_item() do
if px > x and py > y and px <= x + w and py <= y + h then
self.hovered_item = item
break
end
end
end
function TreeView:on_mouse_pressed(button, x, y)
if not self.hovered_item then
return
elseif self.hovered_item.type == "dir" then
self.hovered_item.expanded = not self.hovered_item.expanded
else
core.try(function()
core.root_view:open_doc(core.open_doc(self.hovered_item.filename))
end)
end
end
function TreeView:update()
-- update width
local dest = self.visible and config.treeview_size or 0
if self.init_size then
self.size.x = dest
self.init_size = false
else
self:move_towards(self.size, "x", dest)
end
TreeView.super.update(self)
end
function TreeView:draw()
self:draw_background(style.background2)
local icon_width = style.icon_font:get_width("D")
local spacing = style.font:get_width(" ") * 2
local doc = core.active_view.doc
local active_filename = doc and system.absolute_path(doc.filename or "")
for item, x,y,w,h in self:each_item() do
local color = style.text
-- highlight active_view doc
if item.abs_filename == active_filename then
color = style.accent
end
-- hovered item background
if item == self.hovered_item then
renderer.draw_rect(x, y, w, h, style.line_highlight)
color = style.accent
end
-- icons
x = x + item.depth * style.padding.x + style.padding.x
if item.type == "dir" then
local icon1 = item.expanded and "-" or "+"
local icon2 = item.expanded and "D" or "d"
common.draw_text(style.icon_font, color, icon1, nil, x, y, 0, h)
x = x + style.padding.x
common.draw_text(style.icon_font, color, icon2, nil, x, y, 0, h)
x = x + icon_width
else
x = x + style.padding.x
common.draw_text(style.icon_font, color, "f", nil, x, y, 0, h)
x = x + icon_width
end
-- text
x = x + spacing
x = common.draw_text(style.font, color, item.name, nil, x, y, 0, h)
end
end
-- init
local view = TreeView()
local node = core.root_view:get_active_node()
node:split("left", view, true)
-- register commands and keymap
command.add(nil, {
["treeview:toggle"] = function()
view.visible = not view.visible
end,
})
keymap.add { ["ctrl+\\"] = "treeview:toggle" }

@ -0,0 +1,36 @@
local core = require "core"
local command = require "core.command"
local Doc = require "core.doc"
local function trim_trailing_whitespace(doc)
local cline, ccol = doc:get_selection()
for i = 1, #doc.lines do
local old_text = doc:get_text(i, 1, i, math.huge)
local new_text = old_text:gsub("%s*$", "")
-- don't remove whitespace which would cause the caret to reposition
if cline == i and ccol > #new_text then
new_text = old_text:sub(1, ccol - 1)
end
if old_text ~= new_text then
doc:insert(i, 1, new_text)
doc:remove(i, #new_text + 1, i, math.huge)
end
end
end
command.add("core.docview", {
["trim-whitespace:trim-trailing-whitespace"] = function()
trim_trailing_whitespace(core.active_view.doc)
end,
})
local save = Doc.save
Doc.save = function(self, ...)
trim_trailing_whitespace(self)
save(self, ...)
end

@ -0,0 +1,28 @@
local style = require "core.style"
local common = require "core.common"
style.background = { common.color "#343233" }
style.background2 = { common.color "#2c2a2b" }
style.background3 = { common.color "#2c2a2b" }
style.text = { common.color "#c4b398" }
style.caret = { common.color "#61efce" }
style.accent = { common.color "#ffd152" }
style.dim = { common.color "#615d5f" }
style.divider = { common.color "#242223" }
style.selection = { common.color "#454244" }
style.line_number = { common.color "#454244" }
style.line_number2 = { common.color "#615d5f" }
style.line_highlight = { common.color "#383637" }
style.scrollbar = { common.color "#454344" }
style.scrollbar2 = { common.color "#524F50" }
style.syntax["normal"] = { common.color "#efdab9" }
style.syntax["symbol"] = { common.color "#efdab9" }
style.syntax["comment"] = { common.color "#615d5f" }
style.syntax["keyword"] = { common.color "#d36e2d" }
style.syntax["keyword2"] = { common.color "#ef6179" }
style.syntax["number"] = { common.color "#ffd152" }
style.syntax["literal"] = { common.color "#ffd152" }
style.syntax["string"] = { common.color "#ffd152" }
style.syntax["operator"] = { common.color "#efdab9" }
style.syntax["function"] = { common.color "#61efce" }

@ -0,0 +1,28 @@
local style = require "core.style"
local common = require "core.common"
style.background = { common.color "#282828" }
style.background2 = { common.color "#1d2021" }
style.background3 = { common.color "#1d2021" }
style.text = { common.color "#928374" }
style.caret = { common.color "#fbf1c7" }
style.accent = { common.color "#ebdbb2" }
style.dim = { common.color "#928374" }
style.divider = { common.color "#1d2021" }
style.selection = { common.color "#3c3836" }
style.line_number = { common.color "#928374" }
style.line_number2 = { common.color "#ebdbb2" }
style.line_highlight = { common.color "#32302f" }
style.scrollbar = { common.color "#928374" }
style.scrollbar2 = { common.color "#fbf1c7" }
style.syntax["normal"] = { common.color "#ebdbb2" }
style.syntax["symbol"] = { common.color "#ebdbb2" }
style.syntax["comment"] = { common.color "#928374" }
style.syntax["keyword"] = { common.color "#fb4934" }
style.syntax["keyword2"] = { common.color "#83a598" }
style.syntax["number"] = { common.color "#d3869b" }
style.syntax["literal"] = { common.color "#d3869b" }
style.syntax["string"] = { common.color "#b8bb26" }
style.syntax["operator"] = { common.color "#ebdbb2" }
style.syntax["function"] = { common.color "#8ec07c" }

@ -0,0 +1,28 @@
local style = require "core.style"
local common = require "core.common"
style.background = { common.color "#fbfbfb" }
style.background2 = { common.color "#f2f2f2" }
style.background3 = { common.color "#f2f2f2" }
style.text = { common.color "#404040" }
style.caret = { common.color "#fc1785" }
style.accent = { common.color "#fc1785" }
style.dim = { common.color "#b0b0b0" }
style.divider = { common.color "#e8e8e8" }
style.selection = { common.color "#b7dce8" }
style.line_number = { common.color "#d0d0d0" }
style.line_number2 = { common.color "#808080" }
style.line_highlight = { common.color "#f2f2f2" }
style.scrollbar = { common.color "#e0e0e0" }
style.scrollbar2 = { common.color "#c0c0c0" }
style.syntax["normal"] = { common.color "#181818" }
style.syntax["symbol"] = { common.color "#181818" }
style.syntax["comment"] = { common.color "#22a21f" }
style.syntax["keyword"] = { common.color "#fb6620" }
style.syntax["keyword2"] = { common.color "#fc1785" }
style.syntax["number"] = { common.color "#1586d2" }
style.syntax["literal"] = { common.color "#1586d2" }
style.syntax["string"] = { common.color "#1586d2" }
style.syntax["operator"] = { common.color "#fb6620" }
style.syntax["function"] = { common.color "#fc1785" }

@ -0,0 +1,14 @@
-- put user settings here
-- this module will be loaded after everything else when the application starts
local keymap = require "core.keymap"
local config = require "core.config"
local style = require "core.style"
-- light theme:
-- require "user.colors.summer"
require "user.colors.gruvbox_dark"
-- key binding:
-- keymap.add { ["ctrl+escape"] = "core:quit" }

@ -0,0 +1,146 @@
# lite
![screenshot](https://user-images.githubusercontent.com/3920290/81471642-6c165880-91ea-11ea-8cd1-fae7ae8f0bc4.png)
## Overview
lite is a lightweight text editor written mostly in Lua — it aims to provide
something practical, pretty, *small* and fast, implemented as simply as
possible; easy to modify and extend, or to use without doing either.
## Getting Started
When lite is started it's typically opened with a *project directory* — this
is the directory where your project's code and other data resides. The project
directory is set once when lite is started and, for the duration of the
session, cannot be changed.
To open lite with a specific project directory the directory name can be passed
as a command-line argument *(`.` can be passed to use the current directory)* or
the directory can be dragged onto either the lite executable or a running
instance of lite.
The main way of opening files in lite is through the `core:find-file` command
— this provides a fuzzy finder over all of the project's files and can be
opened using the **`ctrl+p`** shortcut by default.
Commands can be run using keyboard shortcuts, or by using the `core:find-command`
command bound to **`ctrl+shift+p`** by default. For example, pressing
`ctrl+shift+p` and typing `newdoc` then pressing `return` would open a new
document. The current keyboard shortcut for a command can be seen to the right
of the command name on the command finder, thus to find the shortcut for a command
`ctrl+shift+p` can be pressed and the command name typed.
## User Module
lite can be configured through use of the user module. The user module can be
used for changing options in the config module, adding additional key bindings,
loading custom color themes, modifying the style or changing any other part of
lite to your personal preference.
The user module is loaded by lite when the application starts, after the plugins
have been loaded.
The user module can be modified by running the `core:open-user-module` command
or otherwise directly opening the `data/user/init.lua` file.
## Project Module
The project module is an optional module which is loaded from the current
project's directory when lite is started. Project modules can be useful for
things like adding custom commands for project-specific build systems, or
loading project-specific plugins.
The project module is loaded by lite when the application starts, after both the
plugins and user module have been loaded.
The project module can be edited by running the `core:open-project-module`
command — if the module does not exist for the current project when the
command is run it will be created.
## Commands
Commands in lite are used both through the command finder (`ctrl+shift+p`) and
by lite's keyboard shortcut system. Commands consist of 3 components:
* **Name** — The command name in the form of `namespace:action-name`, for
example: `doc:select-all`
* **Predicate** — A function that returns true if the command can be ran, for
example, for any document commands the predicate checks whether the active
view is a document
* **Function** — The function which performs the command itself
Commands can be added using the `command.add` function provided by the
`core.command` module:
```lua
local core = require "core"
local command = require "core.command"
command.add("core.docview", {
["doc:save"] = function()
core.active_view.doc:save()
core.log("Saved '%s', core.active_view.doc.filename)
end
})
```
Commands can be performed programatically (eg. from another command or by your
user module) by calling the `command.perform` function after requiring the
`command` module:
```lua
local command = require "core.command"
command.perform "core:quit"
```
## Keymap
All keyboard shortcuts in lite are handled by the `core.keymap` module. A key
binding in lite maps a "stroke" (eg. `ctrl+q`) to one or more commands (eg.
`core:quit`). When the shortcut is pressed lite will iterate each command
assigned to that key and run the *predicate function* for that command — if the
predicate passes it stops iterating and runs the command.
An example of where this used is the default binding of the `tab` key:
``` lua
["tab"] = { "command:complete", "doc:indent" },
```
When tab is pressed the `command:complete` command is attempted which will only
succeed if the command-input at the bottom of the window is active. Otherwise
the `doc:indent` command is attempted which will only succeed if we have a
document as our active view.
A new mapping can be added by your user module as follows:
```lua
local keymap = require "core.keymap"
keymap.add { ["ctrl+q"] = "core:quit" }
```
## Plugins
Plugins in lite are normal lua modules and are treated as such — no
complicated plugin manager is provided, and, once a plugin is loaded, it is never
expected be to have to unload itself.
To install a plugin simply drop it in the `data/plugins` directory — installed
plugins will be automatically loaded when lite starts. To uninstall a plugin the
plugin file can be deleted — any plugin (including those included with lite's
default installation) can be deleted to remove its functionality.
If you want to load a plugin only under a certain circumstance (for example,
only on a given project) the plugin can be placed somewhere other than the
`data/plugins` directory so that it is not automatically loaded. The plugin can
then be loaded manually as needed by using the `require` function.
Plugins can be downloaded from the [plugins repository](https://github.com/rxi/lite-plugins).
## Color Themes
Colors themes in lite are lua modules which overwrite the color fields of lite's
`core.style` module. Color themes should be placed in the `data/user/colors`
directory.
A color theme can be set by requiring it in your user module:
```lua
require "user.colors.winter"
```
Color themes can be downloaded from the [color themes repository](https://github.com/rxi/lite-colors).

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1369
icon.inl vendored

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@ -0,0 +1,16 @@
.POSIX:
CC ?= gcc
SRCDIR = ./src
CFLAGS = -Wall -Werror -pedantic -O3 -std=gnu11 -fno-strict-aliasing -I${SRCDIR}\
-DLUA_USE_POSIX
# remove this
LDFLAGS = -lSDL2 -lm -llua5.2
FILES != find ${SRCDIR} -name '*.c'
OBJS = $(FILES:.c=.o)
lite: ${OBJS}
${CC} ${LDFLAGS} $^ -o $@
clean:
rm -f lite ${OBJS}

@ -0,0 +1,16 @@
#include "api.h"
int luaopen_system(lua_State *L);
int luaopen_renderer(lua_State *L);
static const luaL_Reg libs[] = {
{ "system", luaopen_system },
{ "renderer", luaopen_renderer },
{ NULL, NULL }
};
void api_load_libs(lua_State *L) {
for (int i = 0; libs[i].name; i++) {
luaL_requiref(L, libs[i].name, libs[i].func, 1);
}
}

@ -0,0 +1,12 @@
#ifndef API_H
#define API_H
#include <lua5.2/lua.h>
#include <lua5.2/lauxlib.h>
#include <lua5.2/lualib.h>
#define API_TYPE_FONT "Font"
void api_load_libs(lua_State *L);
#endif

@ -0,0 +1,112 @@
#include "api.h"
#include "renderer.h"
#include "rencache.h"
static RenColor checkcolor(lua_State *L, int idx, int def)
{
RenColor color;
if (lua_isnoneornil(L, idx))
return (RenColor) { def, def, def, 255 };
lua_rawgeti(L, idx, 1);
lua_rawgeti(L, idx, 2);
lua_rawgeti(L, idx, 3);
lua_rawgeti(L, idx, 4);
color.r = luaL_checknumber(L, -4);
color.g = luaL_checknumber(L, -3);
color.b = luaL_checknumber(L, -2);
color.a = luaL_optnumber(L, -1, 255);
lua_pop(L, 4);
return color;
}
static int f_show_debug(lua_State *L)
{
luaL_checkany(L, 1);
rencache_show_debug(lua_toboolean(L, 1));
return 0;
}
static int f_get_size(lua_State *L)
{
int w, h;
ren_get_size(&w, &h);
lua_pushnumber(L, w);
lua_pushnumber(L, h);
return 2;
}
static int f_begin_frame(lua_State *L)
{
rencache_begin_frame();
return 0;
}
static int f_end_frame(lua_State *L)
{
rencache_end_frame();
return 0;
}
static int f_set_clip_rect(lua_State *L)
{
RenRect rect;
rect.x = luaL_checknumber(L, 1);
rect.y = luaL_checknumber(L, 2);
rect.width = luaL_checknumber(L, 3);
rect.height = luaL_checknumber(L, 4);
rencache_set_clip_rect(rect);
return 0;
}
static int f_draw_rect(lua_State *L)
{
RenRect rect;
rect.x = luaL_checknumber(L, 1);
rect.y = luaL_checknumber(L, 2);
rect.width = luaL_checknumber(L, 3);
rect.height = luaL_checknumber(L, 4);
RenColor color = checkcolor(L, 5, 255);
rencache_draw_rect(rect, color);
return 0;
}
static int f_draw_text(lua_State *L)
{
RenFont **font = luaL_checkudata(L, 1, API_TYPE_FONT);
const char *text = luaL_checkstring(L, 2);
int x = luaL_checknumber(L, 3);
int y = luaL_checknumber(L, 4);
RenColor color = checkcolor(L, 5, 255);
x = rencache_draw_text(*font, text, x, y, color);
lua_pushnumber(L, x);
return 1;
}
static const luaL_Reg lib[] = {
{ "show_debug", f_show_debug },
{ "get_size", f_get_size },
{ "begin_frame", f_begin_frame },
{ "end_frame", f_end_frame },
{ "set_clip_rect", f_set_clip_rect },
{ "draw_rect", f_draw_rect },
{ "draw_text", f_draw_text },
{ NULL, NULL }
};
int luaopen_renderer_font(lua_State *L);
int luaopen_renderer(lua_State *L)
{
luaL_newlib(L, lib);
luaopen_renderer_font(L);
lua_setfield(L, -2, "font");
return 1;
}

@ -0,0 +1,69 @@
#include "api.h"
#include "renderer.h"
#include "rencache.h"
static int f_load(lua_State *L)
{
const char *filename = luaL_checkstring(L, 1);
float size = luaL_checknumber(L, 2);
RenFont **self = lua_newuserdata(L, sizeof(*self));
luaL_setmetatable(L, API_TYPE_FONT);
*self = ren_load_font(filename, size);
if (!*self)
luaL_error(L, "failed to load font");
return 1;
}
static int f_set_tab_width(lua_State *L)
{
RenFont **self = luaL_checkudata(L, 1, API_TYPE_FONT);
int n = luaL_checknumber(L, 2);
ren_set_font_tab_width(*self, n);
return 0;
}
static int f_gc(lua_State *L)
{
RenFont **self = luaL_checkudata(L, 1, API_TYPE_FONT);
if (*self)
rencache_free_font(*self);
return 0;
}
static int f_get_width(lua_State *L)
{
RenFont **self = luaL_checkudata(L, 1, API_TYPE_FONT);
const char *text = luaL_checkstring(L, 2);
lua_pushnumber(L, ren_get_font_width(*self, text) );
return 1;
}
static int f_get_height(lua_State *L)
{
RenFont **self = luaL_checkudata(L, 1, API_TYPE_FONT);
lua_pushnumber(L, ren_get_font_height(*self) );
return 1;
}
static const luaL_Reg lib[] = {
{ "__gc", f_gc },
{ "load", f_load },
{ "set_tab_width", f_set_tab_width },
{ "get_width", f_get_width },
{ "get_height", f_get_height },
{ NULL, NULL }
};
int luaopen_renderer_font(lua_State *L)
{
luaL_newmetatable(L, API_TYPE_FONT);
luaL_setfuncs(L, lib, 0);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
return 1;
}

@ -0,0 +1,402 @@
#include <SDL2/SDL.h>
#include <stdbool.h>
#include <ctype.h>
#include <dirent.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include "api.h"
#include "rencache.h"
extern SDL_Window *window;
static const char* button_name(int button)
{
switch (button) {
case 1 : return "left";
case 2 : return "middle";
case 3 : return "right";
default : return "?";
}
}
static char* key_name(char *dst, int sym)
{
strcpy(dst, SDL_GetKeyName(sym));
for (char *p = dst; *p; p++)
*p = tolower(*p);
return dst;
}
static int f_poll_event(lua_State *L)
{
char buf[16];
int mx, my, wx, wy;
SDL_Event e;
top:
if ( !SDL_PollEvent(&e) )
return 0;
switch (e.type) {
case SDL_QUIT:
lua_pushstring(L, "quit");
return 1;
case SDL_WINDOWEVENT:
if (e.window.event == SDL_WINDOWEVENT_RESIZED) {
lua_pushstring(L, "resized");
lua_pushnumber(L, e.window.data1);
lua_pushnumber(L, e.window.data2);
return 3;
} else if (e.window.event == SDL_WINDOWEVENT_EXPOSED) {
rencache_invalidate();
lua_pushstring(L, "exposed");
return 1;
}
/* on some systems, when alt-tabbing to the window SDL will
* queue up several KEYDOWN events for the `tab` key; we flush
* all keydown events on focus so these are discarded */
if (e.window.event == SDL_WINDOWEVENT_FOCUS_GAINED)
SDL_FlushEvent(SDL_KEYDOWN);
goto top;
case SDL_DROPFILE:
SDL_GetGlobalMouseState(&mx, &my);
SDL_GetWindowPosition(window, &wx, &wy);
lua_pushstring(L, "filedropped");
lua_pushstring(L, e.drop.file);
lua_pushnumber(L, mx - wx);
lua_pushnumber(L, my - wy);
SDL_free(e.drop.file);
return 4;
case SDL_KEYDOWN:
lua_pushstring(L, "keypressed");
lua_pushstring(L, key_name(buf, e.key.keysym.sym));
return 2;
case SDL_KEYUP:
lua_pushstring(L, "keyreleased");
lua_pushstring(L, key_name(buf, e.key.keysym.sym));
return 2;
case SDL_TEXTINPUT:
lua_pushstring(L, "textinput");
lua_pushstring(L, e.text.text);
return 2;
case SDL_MOUSEBUTTONDOWN:
if (e.button.button == 1)
SDL_CaptureMouse(1);
lua_pushstring(L, "mousepressed");
lua_pushstring(L, button_name(e.button.button));
lua_pushnumber(L, e.button.x);
lua_pushnumber(L, e.button.y);
lua_pushnumber(L, e.button.clicks);
return 5;
case SDL_MOUSEBUTTONUP:
if (e.button.button == 1)
SDL_CaptureMouse(0);
lua_pushstring(L, "mousereleased");
lua_pushstring(L, button_name(e.button.button));
lua_pushnumber(L, e.button.x);
lua_pushnumber(L, e.button.y);
return 4;
case SDL_MOUSEMOTION:
lua_pushstring(L, "mousemoved");
lua_pushnumber(L, e.motion.x);
lua_pushnumber(L, e.motion.y);
lua_pushnumber(L, e.motion.xrel);
lua_pushnumber(L, e.motion.yrel);
return 5;
case SDL_MOUSEWHEEL:
lua_pushstring(L, "mousewheel");
lua_pushnumber(L, e.wheel.y);
return 2;
default:
goto top;
}
return 0;
}
static int f_wait_event(lua_State *L)
{
double n = luaL_checknumber(L, 1);
lua_pushboolean(L, SDL_WaitEventTimeout(NULL, n * 1000));
return 1;
}
static SDL_Cursor* cursor_cache[SDL_SYSTEM_CURSOR_HAND + 1];
static const char *cursor_opts[] = {
"arrow",
"ibeam",
"sizeh",
"sizev",
"hand",
NULL
};
static const int cursor_enums[] = {
SDL_SYSTEM_CURSOR_ARROW,
SDL_SYSTEM_CURSOR_IBEAM,
SDL_SYSTEM_CURSOR_SIZEWE,
SDL_SYSTEM_CURSOR_SIZENS,
SDL_SYSTEM_CURSOR_HAND
};
static int f_set_cursor(lua_State *L)
{
int opt = luaL_checkoption(L, 1, "arrow", cursor_opts);
int n = cursor_enums[opt];
SDL_Cursor *cursor = cursor_cache[n];
if (!cursor) {
cursor = SDL_CreateSystemCursor(n);
cursor_cache[n] = cursor;
}
SDL_SetCursor(cursor);
return 0;
}
static int f_set_window_title(lua_State *L)
{
const char *title = luaL_checkstring(L, 1);
SDL_SetWindowTitle(window, title);
return 0;
}
static const char *window_opts[] = { "normal", "maximized", "fullscreen", 0 };
enum { WIN_NORMAL, WIN_MAXIMIZED, WIN_FULLSCREEN };
static int f_set_window_mode(lua_State *L)
{
int n = luaL_checkoption(L, 1, "normal", window_opts);
SDL_SetWindowFullscreen(window,
n == WIN_FULLSCREEN ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
if (n == WIN_NORMAL)
SDL_RestoreWindow(window);
if (n == WIN_MAXIMIZED)
SDL_MaximizeWindow(window);
return 0;
}
static int f_window_has_focus(lua_State *L)
{
unsigned flags = SDL_GetWindowFlags(window);
lua_pushboolean(L, flags & SDL_WINDOW_INPUT_FOCUS);
return 1;
}
static int f_show_confirm_dialog(lua_State *L)
{
const char *title = luaL_checkstring(L, 1);
const char *msg = luaL_checkstring(L, 2);
SDL_MessageBoxButtonData buttons[] = {
{ SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, 1, "Yes" },
{ SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT, 0, "No" },
};
SDL_MessageBoxData data = {
.title = title,
.message = msg,
.numbuttons = 2,
.buttons = buttons,
};
int buttonid;
SDL_ShowMessageBox(&data, &buttonid);
lua_pushboolean(L, buttonid == 1);
return 1;
}
static int f_chdir(lua_State *L)
{
const char *path = luaL_checkstring(L, 1);
int err = chdir(path);
if (err)
luaL_error(L, "chdir() failed");
return 0;
}
static int f_list_dir(lua_State *L)
{
const char *path = luaL_checkstring(L, 1);
DIR *dir = opendir(path);
if (!dir) {
lua_pushnil(L);
lua_pushstring(L, strerror(errno));
return 2;
}
lua_newtable(L);
int i = 1;
struct dirent *entry;
while ( (entry = readdir(dir)) ) {
if (strcmp(entry->d_name, "." ) == 0)
continue;
if (strcmp(entry->d_name, "..") == 0)
continue;
lua_pushstring(L, entry->d_name);
lua_rawseti(L, -2, i);
i++;
}
closedir(dir);
return 1;
}
static int f_absolute_path(lua_State *L)
{
const char *path = luaL_checkstring(L, 1);
char *res = realpath(path, NULL);
if (!res)
return 0;
lua_pushstring(L, res);
free(res);
return 1;
}
static int f_get_file_info(lua_State *L)
{
const char *path = luaL_checkstring(L, 1);
struct stat s;
int err = stat(path, &s);
if (err < 0) {
lua_pushnil(L);
lua_pushstring(L, strerror(errno));
return 2;
}
lua_newtable(L);
lua_pushnumber(L, s.st_mtime);
lua_setfield(L, -2, "modified");
lua_pushnumber(L, s.st_size);
lua_setfield(L, -2, "size");
if (S_ISREG(s.st_mode)) {
lua_pushstring(L, "file");
} else if (S_ISDIR(s.st_mode)) {
lua_pushstring(L, "dir");
} else {
lua_pushnil(L);
}
lua_setfield(L, -2, "type");
return 1;
}
static int f_get_clipboard(lua_State *L)
{
char *text = SDL_GetClipboardText();
if (!text)
return 0;
lua_pushstring(L, text);
SDL_free(text);
return 1;
}
static int f_set_clipboard(lua_State *L)
{
const char *text = luaL_checkstring(L, 1);
SDL_SetClipboardText(text);
return 0;
}
static int f_get_time(lua_State *L)
{
double n = SDL_GetPerformanceCounter() / (double)SDL_GetPerformanceFrequency();
lua_pushnumber(L, n);
return 1;
}
static int f_sleep(lua_State *L)
{
double n = luaL_checknumber(L, 1);
SDL_Delay(n * 1000);
return 0;
}
static int f_exec(lua_State *L)
{
size_t len;
const char *cmd = luaL_checklstring(L, 1, &len);
char *buf = malloc(len + 32);
if (!buf)
luaL_error(L, "buffer allocation failed");
sprintf(buf, "%s &", cmd);
int res = system(buf);
(void) res;
free(buf);
return 0;
}
static int f_fuzzy_match(lua_State *L)
{
const char *str = luaL_checkstring(L, 1);
const char *ptn = luaL_checkstring(L, 2);
int score = 0;
int run = 0;
while (*str && *ptn) {
while (*str == ' ')
str++;
while (*ptn == ' ')
ptn++;
if (tolower(*str) == tolower(*ptn)) {
score += run * 10 - (*str != *ptn);
run++;
ptn++;
} else {
score -= 10;
run = 0;
}
str++;
}
if (*ptn)
return 0;
lua_pushnumber(L, score - (int) strlen(str));
return 1;
}
static const luaL_Reg lib[] = {
{ "poll_event", f_poll_event },
{ "wait_event", f_wait_event },
{ "set_cursor", f_set_cursor },
{ "set_window_title", f_set_window_title },
{ "set_window_mode", f_set_window_mode },
{ "window_has_focus", f_window_has_focus },
{ "show_confirm_dialog", f_show_confirm_dialog },
{ "chdir", f_chdir },
{ "list_dir", f_list_dir },
{ "absolute_path", f_absolute_path },
{ "get_file_info", f_get_file_info },
{ "get_clipboard", f_get_clipboard },
{ "set_clipboard", f_set_clipboard },
{ "get_time", f_get_time },
{ "sleep", f_sleep },
{ "exec", f_exec },
{ "fuzzy_match", f_fuzzy_match },
{ NULL, NULL }
};
int luaopen_system(lua_State *L)
{
luaL_newlib(L, lib);
return 1;
}

@ -0,0 +1,2 @@
#define STB_TRUETYPE_IMPLEMENTATION
#include "stb_truetype.h"

File diff suppressed because it is too large Load Diff

@ -0,0 +1,123 @@
#include <stdio.h>
#include <unistd.h>
#include <SDL2/SDL.h>
#include "api/api.h"
#include "renderer.h"
SDL_Window *window;
static double get_scale(void)
{
float dpi;
SDL_GetDisplayDPI(0, NULL, &dpi, NULL);
return 1.0;
}
static void get_exe_filename(char *buf, int sz)
{
char path[512];
sprintf(path, "/proc/%d/exe", getpid());
int len = readlink(path, buf, sz - 1);
buf[len] = '\0';
}
static void init_window_icon(void)
{
// FIXME: include inside function!?
#include "../icon.inl"
(void) icon_rgba_len; /* unused */
SDL_Surface *surf = SDL_CreateRGBSurfaceFrom(
icon_rgba, 64, 64,
32, 64 * 4,
0x000000ff,
0x0000ff00,
0x00ff0000,
0xff000000);
SDL_SetWindowIcon(window, surf);
SDL_FreeSurface(surf);
}
int main(int argc, char **argv)
{
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
SDL_EnableScreenSaver();
SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
atexit(SDL_Quit);
#ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* Available since 2.0.8 */
SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
#endif
#if SDL_VERSION_ATLEAST(2, 0, 5)
SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
#endif
SDL_DisplayMode dm;
SDL_GetCurrentDisplayMode(0, &dm);
window = SDL_CreateWindow(
"", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
dm.w * 0.8, dm.h * 0.8,
SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_HIDDEN);
init_window_icon();
ren_init(window);
lua_State *L = luaL_newstate();
luaL_openlibs(L);
api_load_libs(L);
lua_newtable(L);
for (int i = 0; i < argc; i++) {
lua_pushstring(L, argv[i]);
lua_rawseti(L, -2, i + 1);
}
lua_setglobal(L, "ARGS");
lua_pushstring(L, "1.11");
lua_setglobal(L, "VERSION");
lua_pushstring(L, SDL_GetPlatform());
lua_setglobal(L, "PLATFORM");
lua_pushnumber(L, get_scale());
lua_setglobal(L, "SCALE");
char exename[2048];
get_exe_filename(exename, sizeof(exename));
lua_pushstring(L, exename);
lua_setglobal(L, "EXEFILE");
(void) luaL_dostring(L,
"local core\n"
"xpcall(function()\n"
" SCALE = tonumber(os.getenv(\"LITE_SCALE\")) or SCALE\n"
" PATHSEP = package.config:sub(1, 1)\n"
" EXEDIR = EXEFILE:match(\"^(.+)[/\\\\].*$\")\n"
" package.path = EXEDIR .. '/data/?.lua;' .. package.path\n"
" package.path = EXEDIR .. '/data/?/init.lua;' .. package.path\n"
" core = require('core')\n"
" core.init()\n"
" core.run()\n"
"end, function(err)\n"
" print('Error: ' .. tostring(err))\n"
" print(debug.traceback(nil, 2))\n"
" if core and core.on_error then\n"
" pcall(core.on_error, err)\n"
" end\n"
" os.exit(1)\n"
"end)");
lua_close(L);
SDL_DestroyWindow(window);
return EXIT_SUCCESS;
}

@ -0,0 +1,303 @@
#include <stdio.h>
#include "rencache.h"
/* a cache over the software renderer -- all drawing operations are stored as
** commands when issued. At the end of the frame we write the commands to a grid
** of hash values, take the cells that have changed since the previous frame,
** merge them into dirty rectangles and redraw only those regions */
#define CELLS_X 80
#define CELLS_Y 50
#define CELL_SIZE 96
#define COMMAND_BUF_SIZE (1024 * 512)
enum { FREE_FONT, SET_CLIP, DRAW_TEXT, DRAW_RECT };
typedef struct {
int type, size;
RenRect rect;
RenColor color;
RenFont *font;
int tab_width;
// this was of size 0
char text[1];
} Command;
static unsigned cells_buf1[CELLS_X * CELLS_Y];
static unsigned cells_buf2[CELLS_X * CELLS_Y];
static unsigned *cells_prev = cells_buf1;
static unsigned *cells = cells_buf2;
static RenRect rect_buf[CELLS_X * CELLS_Y / 2];
static char command_buf[COMMAND_BUF_SIZE];
static int command_buf_idx;
static RenRect screen_rect;
static bool show_debug;
static inline int min(int a, int b) { return a < b ? a : b; }
static inline int max(int a, int b) { return a > b ? a : b; }
static inline int cell_idx(int x, int y) { return x + y * CELLS_X; }
/* 32bit fnv-1a hash */
#define HASH_INITIAL 2166136261
static void hash(unsigned *h, const void *data, int size)
{
const unsigned char *p = data;
while (size--)
*h = (*h ^ *p++) * 16777619;
}
static inline bool rects_overlap(RenRect a, RenRect b)
{
return b.x + b.width >= a.x && b.x <= a.x + a.width
&& b.y + b.height >= a.y && b.y <= a.y + a.height;
}
static RenRect intersect_rects(RenRect a, RenRect b)
{
int x1 = max(a.x, b.x);
int y1 = max(a.y, b.y);
int x2 = min(a.x + a.width, b.x + b.width);
int y2 = min(a.y + a.height, b.y + b.height);
return (RenRect) { x1, y1, max(0, x2 - x1), max(0, y2 - y1) };
}
static RenRect merge_rects(RenRect a, RenRect b)
{
int x1 = min(a.x, b.x);
int y1 = min(a.y, b.y);
int x2 = max(a.x + a.width, b.x + b.width);
int y2 = max(a.y + a.height, b.y + b.height);
return (RenRect) { x1, y1, x2 - x1, y2 - y1 };
}
static Command* push_command(int type, int size)
{
Command *cmd = (Command*) (command_buf + command_buf_idx);
int n = command_buf_idx + size;
if (n > COMMAND_BUF_SIZE) {
fprintf(stderr, "Warning: (" __FILE__ "): exhausted command buffer\n");
return NULL;
}
command_buf_idx = n;
memset(cmd, 0, sizeof(Command));
cmd->type = type;
cmd->size = size;
return cmd;
}
static bool next_command(Command **prev)
{
if (*prev == NULL)
*prev = (Command*) command_buf;
else
*prev = (Command*) (((char*) *prev) + (*prev)->size);
return *prev != ((Command*) (command_buf + command_buf_idx));
}
void rencache_show_debug(bool enable)
{
show_debug = enable;
}
void rencache_free_font(RenFont *font)
{
Command *cmd = push_command(FREE_FONT, sizeof(Command));
if (cmd)
cmd->font = font;
}
void rencache_set_clip_rect(RenRect rect)
{
Command *cmd = push_command(SET_CLIP, sizeof(Command));
if (cmd)
cmd->rect = intersect_rects(rect, screen_rect);
}
void rencache_draw_rect(RenRect rect, RenColor color)
{
if (!rects_overlap(screen_rect, rect))
return;
Command *cmd = push_command(DRAW_RECT, sizeof(Command));
if (cmd) {
cmd->rect = rect;
cmd->color = color;
}
}
int rencache_draw_text(RenFont *font, const char *text, int x, int y, RenColor color)
{
RenRect rect;
rect.x = x;
rect.y = y;
rect.width = ren_get_font_width(font, text);
rect.height = ren_get_font_height(font);
if (rects_overlap(screen_rect, rect)) {
int sz = strlen(text) + 1;
Command *cmd = push_command(DRAW_TEXT, sizeof(Command) + sz);
if (cmd) {
memcpy(cmd->text, text, sz);
cmd->color = color;
cmd->font = font;
cmd->rect = rect;
cmd->tab_width = ren_get_font_tab_width(font);
}
}
return x + rect.width;
}
void rencache_invalidate(void)
{
memset(cells_prev, 0xff, sizeof(cells_buf1));
}
void rencache_begin_frame(void)
{
/* reset all cells if the screen width/height has changed */
int w, h;
ren_get_size(&w, &h);
if (screen_rect.width != w || h != screen_rect.height) {
screen_rect.width = w;
screen_rect.height = h;
rencache_invalidate();
}
}
static void update_overlapping_cells(RenRect r, unsigned h)
{
int x1 = r.x / CELL_SIZE;
int y1 = r.y / CELL_SIZE;
int x2 = (r.x + r.width) / CELL_SIZE;
int y2 = (r.y + r.height) / CELL_SIZE;
for (int y = y1; y <= y2; y++) {
for (int x = x1; x <= x2; x++) {
int idx = cell_idx(x, y);
hash(&cells[idx], &h, sizeof(h));
}
}
}
static void push_rect(RenRect r, int *count)
{
/* try to merge with existing rectangle */
for (int i = *count - 1; i >= 0; i--) {
RenRect *rp = &rect_buf[i];
if (rects_overlap(*rp, r)) {
*rp = merge_rects(*rp, r);
return;
}
}
/* couldn't merge with previous rectangle: push */
rect_buf[(*count)++] = r;
}
void rencache_end_frame(void)
{
/* update cells from commands */
Command *cmd = NULL;
RenRect cr = screen_rect;
while (next_command(&cmd)) {
if (cmd->type == SET_CLIP)
cr = cmd->rect;
RenRect r = intersect_rects(cmd->rect, cr);
if (r.width == 0 || r.height == 0)
continue;
unsigned h = HASH_INITIAL;
hash(&h, cmd, cmd->size);
update_overlapping_cells(r, h);
}
/* push rects for all cells changed from last frame, reset cells */
int rect_count = 0;
int max_x = screen_rect.width / CELL_SIZE + 1;
int max_y = screen_rect.height / CELL_SIZE + 1;
for (int y = 0; y < max_y; y++) {
for (int x = 0; x < max_x; x++) {
/* compare previous and current cell for change */
int idx = cell_idx(x, y);
if (cells[idx] != cells_prev[idx])
push_rect((RenRect) { x, y, 1, 1 }, &rect_count);
cells_prev[idx] = HASH_INITIAL;
}
}
/* expand rects from cells to pixels */
for (int i = 0; i < rect_count; i++) {
RenRect *r = &rect_buf[i];
r->x *= CELL_SIZE;
r->y *= CELL_SIZE;
r->width *= CELL_SIZE;
r->height *= CELL_SIZE;
*r = intersect_rects(*r, screen_rect);
}
/* redraw updated regions */
bool has_free_commands = false;
for (int i = 0; i < rect_count; i++) {
/* draw */
RenRect r = rect_buf[i];
ren_set_clip_rect(r);
cmd = NULL;
while (next_command(&cmd)) {
switch (cmd->type) {
case FREE_FONT:
has_free_commands = true;
break;
case SET_CLIP:
ren_set_clip_rect(intersect_rects(cmd->rect, r));
break;
case DRAW_RECT:
ren_draw_rect(cmd->rect, cmd->color);
break;
case DRAW_TEXT:
ren_set_font_tab_width(cmd->font, cmd->tab_width);
ren_draw_text(cmd->font, cmd->text, cmd->rect.x,
cmd->rect.y, cmd->color);
break;
}
}
if (show_debug) {
RenColor color = { rand(), rand(), rand(), 50 };
ren_draw_rect(r, color);
}
}
/* update dirty rects */
if (rect_count > 0)
ren_update_rects(rect_buf, rect_count);
/* free fonts */
if (has_free_commands) {
cmd = NULL;
while (next_command(&cmd)) {
if (cmd->type == FREE_FONT)
ren_free_font(cmd->font);
}
}
/* swap cell buffer and reset */
unsigned *tmp = cells;
cells = cells_prev;
cells_prev = tmp;
command_buf_idx = 0;
}

@ -0,0 +1,16 @@
#ifndef RENCACHE_H
#define RENCACHE_H
#include <stdbool.h>
#include "renderer.h"
void rencache_show_debug(bool enable);
void rencache_free_font(RenFont *font);
void rencache_set_clip_rect(RenRect rect);
void rencache_draw_rect(RenRect rect, RenColor color);
int rencache_draw_text(RenFont *font, const char *text, int x, int y, RenColor color);
void rencache_invalidate(void);
void rencache_begin_frame(void);
void rencache_end_frame(void);
#endif

@ -0,0 +1,378 @@
#include <stdio.h>
#include <stdbool.h>
#include <assert.h>
#include <math.h>
#include "lib/stb/stb_truetype.h"
#include "renderer.h"
#define MAX_GLYPHSET 256
struct RenImage {
RenColor *pixels;
int width, height;
};
typedef struct {
RenImage *image;
stbtt_bakedchar glyphs[256];
} GlyphSet;
struct RenFont {
void *data;
stbtt_fontinfo stbfont;
GlyphSet *sets[MAX_GLYPHSET];
float size;
int height;
};
static SDL_Window *window;
static struct { int left, top, right, bottom; } clip;
static void* check_alloc(void *ptr)
{
if (!ptr) {
fprintf(stderr, "Fatal error: memory allocation failed\n");
exit(EXIT_FAILURE);
}
return ptr;
}
static const char* utf8_to_codepoint(const char *p, unsigned *dst)
{
unsigned res, n;
switch (*p & 0xf0) {
case 0xf0 : res = *p & 0x07; n = 3; break;
case 0xe0 : res = *p & 0x0f; n = 2; break;
case 0xd0 :
case 0xc0 : res = *p & 0x1f; n = 1; break;
default : res = *p; n = 0; break;
}
while (n--)
res = (res << 6) | (*(++p) & 0x3f);
*dst = res;
return p + 1;
}
void ren_init(SDL_Window *win)
{
assert(win);
window = win;
SDL_Surface *surf = SDL_GetWindowSurface(window);
ren_set_clip_rect( (RenRect) { 0, 0, surf->w, surf->h } );
}
void ren_update_rects(RenRect *rects, int count)
{
SDL_UpdateWindowSurfaceRects(window, (SDL_Rect*) rects, count);
static bool initial_frame = true;
if (initial_frame) {
SDL_ShowWindow(window);
initial_frame = false;
}
}
void ren_set_clip_rect(RenRect rect)
{
clip.left = rect.x;
clip.top = rect.y;
clip.right = rect.x + rect.width;
clip.bottom = rect.y + rect.height;
}
void ren_get_size(int *x, int *y)
{
SDL_Surface *surf = SDL_GetWindowSurface(window);
*x = surf->w;
*y = surf->h;
}
RenImage* ren_new_image(int width, int height)
{
assert(width > 0 && height > 0);
RenImage *image = malloc(sizeof(RenImage) + width * height * sizeof(RenColor));
check_alloc(image);
image->pixels = (void*) (image + 1);
image->width = width;
image->height = height;
return image;
}
inline void ren_free_image(RenImage *image)
{
free(image);
}
static GlyphSet* load_glyphset(RenFont *font, int idx)
{
GlyphSet *set = check_alloc(calloc(1, sizeof(GlyphSet)));
/* init image */
int width = 128;
int height = 128;
retry:
set->image = ren_new_image(width, height);
/* load glyphs */
float s =
stbtt_ScaleForMappingEmToPixels(&font->stbfont, 1) /
stbtt_ScaleForPixelHeight(&font->stbfont, 1);
int res = stbtt_BakeFontBitmap(
font->data, 0, font->size * s, (void*) set->image->pixels,
width, height, idx * 256, 256, set->glyphs);
/* retry with a larger image buffer if the buffer wasn't large enough */
if (res < 0) {
width *= 2;
height *= 2;
ren_free_image(set->image);
goto retry;
}
/* adjust glyph yoffsets and xadvance */
int ascent, descent, linegap;
stbtt_GetFontVMetrics(&font->stbfont, &ascent, &descent, &linegap);
float scale = stbtt_ScaleForMappingEmToPixels(&font->stbfont, font->size);
int scaled_ascent = ascent * scale + 0.5;
for (int i = 0; i < 256; i++) {
set->glyphs[i].yoff += scaled_ascent;
set->glyphs[i].xadvance = floor(set->glyphs[i].xadvance);
}
/* convert 8bit data to 32bit */
for (int i = width * height - 1; i >= 0; i--) {
uint8_t n = *((uint8_t*) set->image->pixels + i);
set->image->pixels[i] = (RenColor) { .r = 255, .g = 255,
.b = 255, .a = n };
}
return set;
}
static GlyphSet* get_glyphset(RenFont *font, int codepoint)
{
int idx = (codepoint >> 8) % MAX_GLYPHSET;
if (!font->sets[idx])
font->sets[idx] = load_glyphset(font, idx);
return font->sets[idx];
}
RenFont* ren_load_font(const char *filename, float size)
{
RenFont *font = NULL;
FILE *fp = NULL;
/* init font */
font = check_alloc(calloc(1, sizeof(RenFont)));
font->size = size;
/* load font into buffer */
fp = fopen(filename, "rb");
if (!fp)
return NULL;
/* get size */
fseek(fp, 0, SEEK_END);
int buf_size = ftell(fp);
fseek(fp, 0, SEEK_SET);
/* load */
font->data = check_alloc(malloc(buf_size));
int _ = fread(font->data, 1, buf_size, fp); (void) _;
fclose(fp);
fp = NULL;
/* init stbfont */
int ok = stbtt_InitFont(&font->stbfont, font->data, 0);
if (!ok)
goto fail;
/* get height and scale */
int ascent, descent, linegap;
stbtt_GetFontVMetrics(&font->stbfont, &ascent, &descent, &linegap);
float scale = stbtt_ScaleForMappingEmToPixels(&font->stbfont, size);
font->height = (ascent - descent + linegap) * scale + 0.5;
/* make tab and newline glyphs invisible */
stbtt_bakedchar *g = get_glyphset(font, '\n')->glyphs;
g['\t'].x1 = g['\t'].x0;
g['\n'].x1 = g['\n'].x0;
return font;
fail:
if (fp)
fclose(fp);
if (font)
free(font->data);
free(font);
return NULL;
}
void ren_free_font(RenFont *font)
{
for (int i = 0; i < MAX_GLYPHSET; i++) {
GlyphSet *set = font->sets[i];
if (set) {
ren_free_image(set->image);
free(set);
}
}
free(font->data);
free(font);
}
void ren_set_font_tab_width(RenFont *font, int n)
{
GlyphSet *set = get_glyphset(font, '\t');
set->glyphs['\t'].xadvance = n;
}
int ren_get_font_tab_width(RenFont *font)
{
GlyphSet *set = get_glyphset(font, '\t');
return set->glyphs['\t'].xadvance;
}
int ren_get_font_width(RenFont *font, const char *text)
{
int x = 0;
const char *p = text;
unsigned codepoint;
while (*p) {
p = utf8_to_codepoint(p, &codepoint);
GlyphSet *set = get_glyphset(font, codepoint);
stbtt_bakedchar *g = &set->glyphs[codepoint & 0xff];
x += g->xadvance;
}
return x;
}
inline int ren_get_font_height(RenFont *font)
{
return font->height;
}
static inline RenColor blend_pixel(RenColor dst, RenColor src)
{
int ia = 0xff - src.a;
dst.r = ((src.r * src.a) + (dst.r * ia)) >> 8;
dst.g = ((src.g * src.a) + (dst.g * ia)) >> 8;
dst.b = ((src.b * src.a) + (dst.b * ia)) >> 8;
return dst;
}
static inline RenColor blend_pixel2(RenColor dst, RenColor src, RenColor color) {
src.a = (src.a * color.a) >> 8;
int ia = 0xff - src.a;
dst.r = ((src.r * color.r * src.a) >> 16) + ((dst.r * ia) >> 8);
dst.g = ((src.g * color.g * src.a) >> 16) + ((dst.g * ia) >> 8);
dst.b = ((src.b * color.b * src.a) >> 16) + ((dst.b * ia) >> 8);
return dst;
}
#define rect_draw_loop(expr) \
{ \
for (int j = y1; j < y2; j++) { \
for (int i = x1; i < x2; i++) { \
*d = expr; \
d++; \
} \
d += dr; \
} \
}
void ren_draw_rect(RenRect rect, RenColor color)
{
if (color.a == 0)
return;
int x1 = rect.x < clip.left ? clip.left : rect.x;
int y1 = rect.y < clip.top ? clip.top : rect.y;
int x2 = rect.x + rect.width;
int y2 = rect.y + rect.height;
x2 = x2 > clip.right ? clip.right : x2;
y2 = y2 > clip.bottom ? clip.bottom : y2;
SDL_Surface *surf = SDL_GetWindowSurface(window);
RenColor *d = (RenColor*) surf->pixels;
d += x1 + y1 * surf->w;
int dr = surf->w - (x2 - x1);
if (color.a == 0xff) {
rect_draw_loop(color);
} else {
rect_draw_loop(blend_pixel(*d, color));
}
}
void ren_draw_image(RenImage *image, RenRect *sub, int x, int y, RenColor color)
{
if (color.a == 0)
return;
/* clip */
int n;
if ((n = clip.left - x) > 0) { sub->width -= n; sub->x += n; x += n; }
if ((n = clip.top - y) > 0) { sub->height -= n; sub->y += n; y += n; }
if ((n = x + sub->width - clip.right ) > 0) { sub->width -= n; }
if ((n = y + sub->height - clip.bottom) > 0) { sub->height -= n; }
if (sub->width <= 0 || sub->height <= 0)
return;
/* draw */
SDL_Surface *surf = SDL_GetWindowSurface(window);
RenColor *s = image->pixels;
RenColor *d = (RenColor*) surf->pixels;
s += sub->x + sub->y * image->width;
d += x + y * surf->w;
int sr = image->width - sub->width;
int dr = surf->w - sub->width;
for (int j = 0; j < sub->height; j++) {
for (int i = 0; i < sub->width; i++) {
*d = blend_pixel2(*d, *s, color);
d++;
s++;
}
d += dr;
s += sr;
}
}
int ren_draw_text(RenFont *font, const char *text, int x, int y, RenColor color)
{
RenRect rect;
const char *p = text;
unsigned codepoint;
while (*p) {
p = utf8_to_codepoint(p, &codepoint);
GlyphSet *set = get_glyphset(font, codepoint);
stbtt_bakedchar *g = &set->glyphs[codepoint & 0xff];
rect.x = g->x0;
rect.y = g->y0;
rect.width = g->x1 - g->x0;
rect.height = g->y1 - g->y0;
ren_draw_image(set->image, &rect, x + g->xoff, y + g->yoff, color);
x += g->xadvance;
}
return x;
}

@ -0,0 +1,33 @@
#ifndef RENDERER_H
#define RENDERER_H
#include <SDL2/SDL.h>
#include <stdint.h>
typedef struct RenImage RenImage;
typedef struct RenFont RenFont;
typedef struct { uint8_t b, g, r, a; } RenColor;
typedef struct { int x, y, width, height; } RenRect;
void ren_init(SDL_Window *win);
void ren_update_rects(RenRect *rects, int count);
void ren_set_clip_rect(RenRect rect);
void ren_get_size(int *x, int *y);
RenImage* ren_new_image(int width, int height);
void ren_free_image(RenImage *image);
RenFont* ren_load_font(const char *filename, float size);
void ren_free_font(RenFont *font);
void ren_set_font_tab_width(RenFont *font, int n);
int ren_get_font_tab_width(RenFont *font);
int ren_get_font_width(RenFont *font, const char *text);
int ren_get_font_height(RenFont *font);
void ren_draw_rect(RenRect rect, RenColor color);
void ren_draw_image(RenImage *image, RenRect *sub, int x, int y, RenColor color);
int ren_draw_text(RenFont *font, const char *text, int x, int y, RenColor color);
#endif
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