fix tmp file location

fix tmp file location, moved from datadir to a direcotry in /tmp or
configurable via env: LITE_CACHE

TODO

@@ -14,9 +14,11 @@
 [ ] add a cross to close tab
 [ ] prevent overscrolling on treeview
 [x] user config file and/or init.lua
-[ ] change tmp directory to somewhere in /tmp
+[x] change tmp directory to somewhere in /tmp
 [x] save project directory and restore on reopening
 [ ] optimize dir tree taking too long to load on big folders
+[ ] SDL: optimize drawing operations
+[ ] syntax: do not reload syntax on every draw event
 [ ] go in background when launching from terminal
 [ ] some key bindings:
 	[x] alt+right == End

data/core/common.lua

@@ -81,7 +81,7 @@ function common.fuzzy_match(haystack, needle)
   return system.fuzzy_match(haystack, needle)
 end
 
--- FIXME: why does this crash when specifying path?
+
 function common.path_suggest(text)
   local path, name = text:match("^(.-)([^/\\]*)$")
   local files = system.list_dir(path == "" and "." or path) or {}

data/core/init.lua

@@ -157,16 +157,16 @@ 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
+  for _, filename in ipairs(system.list_dir(TEMPDIR)) do
     if filename:find(temp_file_prefix, 1, true) == 1 then
-      os.remove(EXEDIR .. PATHSEP .. filename)
+      os.remove(TEMPDIR .. PATHSEP .. filename)
     end
   end
 end
 
 function core.temp_filename(ext)
   temp_file_counter = temp_file_counter + 1
-  return EXEDIR .. PATHSEP .. temp_file_prefix
+  return TEMPDIR .. PATHSEP .. temp_file_prefix
       .. string.format("%06x", temp_file_counter) .. (ext or "")
 end
 

src/main.c

@@ -96,6 +96,7 @@ int main(int argc, char **argv)
 	  "xpcall(function()\n"
 	  "  SCALE = tonumber(os.getenv(\"LITE_SCALE\")) or SCALE\n"
 	  "  USERDIR = os.getenv(\"HOME\") .. '/.config/lite'\n"
+	  "  TEMPDIR = os.getenv(\"LITE_CACHE\") or '/tmp'\n"
 	  "  PATHSEP = package.config:sub(1, 1)\n"
 	  "  EXEDIR = EXEFILE:match(\"^(.+)[/\\\\].*$\")\n"
 	  "  package.path = EXEDIR .. '/data/?.lua;' .. package.path\n"