simpler code, less files, also added option to show/not show tab markersmaster
parent
2d35c0b522
commit
eb72d24b5b
@ -1,222 +0,0 @@ |
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#include "fbuffer.h" |
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#include "config.h" |
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#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <wchar.h> |
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void bufInit (FileBuffer *b) |
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{ |
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b->rw = NULL; |
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b->rownum = 0; |
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} |
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/* Add a row to the file buffer */ |
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void rowAddLast (FileBuffer *b, char *s, int len) |
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{ |
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/* Extend the block of memory containing the lines */ |
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Row *newr = realloc(b->rw, (b->rownum + 1) * sizeof(Row)); |
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//if (newr == NULL) termDie("realloc in rowAddLast");
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b->rw = newr; |
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/* Allocate memory for the line and copy it
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* at the current row number */ |
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b->rw[b->rownum].chars = malloc(len + 1); |
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//if (b->rw[b->rownum].chars == NULL) termDie("malloc in rowAddLast chars");
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memcpy(b->rw[b->rownum].chars, s, len); |
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b->rw[b->rownum].chars[len] = '\0'; |
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b->rw[b->rownum].size = len; |
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updateRender(&b->rw[b->rownum]); |
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b->rownum++; |
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} |
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void rowAddChar (Row *rw, char c, int pos) |
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{ |
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/* Check if char is valid */ |
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if (!c || (iscntrl(c) && c != '\t')) return; |
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/* extend the string */ |
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rw->size++; |
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char *t = realloc(rw->chars, rw->size + 1); |
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//if (t == NULL) termDie("realloc in rowAddchar");
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rw->chars = t; |
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/* make space for the new char */ |
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memcpy(&rw->chars[pos + 1], &rw->chars[pos], (rw->size + 1) - (pos + 1)); |
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/* add the new char */ |
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rw->chars[pos] = c; |
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updateRender(rw); |
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} |
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int rowDeleteChar (Row *rw, int select, int pos) // WIP
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{ |
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/* Check if the character is valid */ |
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if (rw->chars[pos - 1] == '\0' && pos) return 0; |
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if (!pos && !select) return 0; |
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if (rw->chars[pos] == '\0' && select) return 0; |
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//change pos based on the command
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if (!select) pos--; |
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memcpy(&rw->chars[pos], &rw->chars[pos + 1], rw->size - pos); |
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char *s = realloc(rw->chars, rw->size); |
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if (s != NULL) rw->chars = s; |
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rw->size--; |
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updateRender(rw); |
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return 1; |
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} |
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void rowAddRow (FileBuffer *b, int pos, int cur) // WIP; TO DOCUMENT |
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{ |
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/* MOVE THE ROWS AWAY */ |
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/* add another line to the bottom containing the previous
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* (last) line, effectively making new space */ |
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rowAddLast(b, b->rw[b->rownum - 1].chars, b->rw[b->rownum - 1].size); |
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/* copy all other lines until the specified position to the next one */ |
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for (int last = b->rownum - 1; last > pos; last--) |
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rowCpy(&b->rw[last], &b->rw[last - 1]); |
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/* SPLIT THE ROW AT POS AND STORE IT */ |
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/* Get the row length at position after the cursor */ |
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int len = b->rw[pos].size - cur; |
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/* create a dummy row as the new row souce */ |
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Row nex = EROW; |
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/* allocate a buffer */ |
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char *s = malloc(len + 1); |
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//if (s == NULL) termDie("malloc in rowAddRow s");
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/* copy the contents of the pos row after the cursor into the buffer */ |
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memcpy(s, &b->rw[pos].chars[cur], len); |
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s[len] = '\0'; |
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/* update the dummy row */ |
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nex.chars = s; |
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nex.size = strlen(s); |
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/* MAKE THE SPLIT INTO TWO LINES */ |
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/* shrink the line at pos */ |
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char *p = realloc(b->rw[pos].chars, cur + 1); |
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//if (p == NULL) termDie("realloc in rowAddRow");
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b->rw[pos].chars = p; |
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/* and terminate it with null like a good boi */ |
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b->rw[pos].chars[cur] = '\0'; |
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/* update info and render */ |
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b->rw[pos].size = cur; |
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updateRender(&b->rw[pos]); |
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/* copy the dummy to the new line and free */ |
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rowCpy(&b->rw[pos + 1], &nex); |
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rowFree(&nex); |
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} |
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void rowFree (Row *rw) // WIP
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{ |
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/* Free both render and memory strings */ |
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free(rw->render); |
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free(rw->chars); |
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/* clear sizes */ |
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rw->size = 0; |
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rw->r_size = 0; |
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rw->utf = 0; |
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} |
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void rowCpy (Row *to, Row *from) // WIP
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{ |
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/* Free the destination row (without destroying it) */ |
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rowFree(to); |
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/* Allocate space for the new string */ |
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to->chars = (char*) malloc(strlen(from->chars) + 1); |
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//if (to->chars == NULL) termDie("malloc in rowCpy");
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/* And update the size */ |
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to->size = from->size; |
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/* Then copy the chars from the source row to the destination row */ |
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memcpy(to->chars, from->chars, to->size); |
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to->chars[to->size] = '\0'; |
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/* Then update the render */ |
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updateRender(to); |
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} |
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void rowAppendString (Row *rw, char *s, int len) |
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{ |
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/* reallocate the row to accomodate for the added string */ |
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char *temp = realloc(rw->chars, rw->size + len + 1); |
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//if (temp == NULL) termDie("realloc in rowAppendString");
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rw->chars = temp; |
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memcpy(&rw->chars[rw->size], s, len); |
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rw->size += len; |
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rw->chars[rw->size] = '\0'; |
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updateRender(rw); |
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} |
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void rowDeleteRow (FileBuffer *b, int pos) |
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{ |
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if (b->rownum == 1) return; |
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if (pos >= b->rownum) return; |
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if (pos < 0) return; |
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for (; pos < b->rownum - 1; pos++) { |
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rowCpy(&b->rw[pos], &b->rw[pos + 1]); // rowcpy already frees the row
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} |
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b->rownum--; |
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rowFree(&b->rw[b->rownum]); |
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Row *temp = realloc(b->rw, sizeof(Row) * b->rownum); |
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//if (temp == NULL) termDie("realloc in rowDeleteRow");
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b->rw = temp; |
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} |
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void updateRender (Row *rw) |
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{ |
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/* count the special characters
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* spaces, utf-8 continuation chars */ |
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static int tabs, i, off/*, utf_width, utf_chars*/; |
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//static wchar_t wc_tmp;
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//static char *mb_p;
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tabs = 0; |
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//utf_width = 0;
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//utf_chars = 0;
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for (i = 0; i < rw->size; i++) { |
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if (rw->chars[i] == '\t') tabs++; |
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/*else if (isStart(rw->chars[i])) {
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utf_chars++; |
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wc_tmp = 0; |
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mb_p = &rw->chars[i]; |
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//int utf_len = mblen(mb_p, rw->size - i);
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mbtowc(&wc_tmp, mb_p, rw->size - i); |
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utf_width += wcwidth(wc_tmp); |
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//utf_len += utf_chars;
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} */ |
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} |
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rw->render = NULL; |
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free(rw->render); |
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/* Render is long as size with the added tab spaces - 1
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* (we already count for the \t as a char) */ |
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rw->render = malloc(rw->size + tabs * (TABSIZE - 1) + 1); |
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//if (rw->render == NULL) termDie ("malloc in updateRender");
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/* put all the characters (substituing all special chars)
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* into the render buffer */ |
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for (i = 0, off = 0; i < rw->size; i++) { |
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if (rw->chars[i] == '\t') { |
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for (int j = 0; j < TABSIZE; j++){ |
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//if (!j) rw->render[off++] = '|';
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//else rw->render[off++] = ' ';
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rw->render[off++] = ' '; |
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}
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} else { |
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rw->render[off++] = rw->chars[i]; |
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} |
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} |
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rw->render[off] = '\0'; |
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rw->r_size = off; |
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//rw->utf = utf_width - utf_chars;
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} |
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