4 A Programmer's Text Editor
8 Copyright (C) 1991-2007 Angel Ortega <angel@triptico.com>
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License
12 as published by the Free Software Foundation; either version 2
13 of the License, or (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 http://www.triptico.com
31 mp.actions['insert_line'] = sub (d) {
35 if (d.syntax == NULL) mp.detect_syntax(d);
38 mp.actions['delete_line'] = sub (d) { mp.store_undo(d); mp.delete_line(d); };
39 mp.actions['insert_space'] = sub (d) { mp.store_undo(d); mp.insert_space(d); };
40 mp.actions['insert_tab'] = sub (d) { mp.store_undo(d); mp.insert_tab(d); };
41 mp.actions['delete'] = sub (d) { mp.store_undo(d); mp.delete_char(d); };
42 mp.actions['delete_left'] = sub (d) { mp.store_undo(d); mp.move_left(d) &&
44 mp.actions['undo'] = sub (d) { mp.undo(d); };
45 mp.actions['redo'] = sub (d) { mp.redo(d); };
46 mp.actions['join_paragraph'] = sub (d) { mp.store_undo(d); mp.join_paragraph(d); };
48 mp.actions['word_wrap_paragraph'] = sub (d) {
50 if(mp.config.word_wrap == 0)
51 mp.alert(L("Word wrapping must be set"));
54 mp.word_wrap_paragraph(d);
58 mp.actions['line_options'] = sub (d) {
60 /* convert special characters on end of line */
61 local lt = mp.backslash_codes(mp.config.eol, 1);
64 { 'label' => L("Word wrap on column (0, no word wrap):"),
66 'value' => mp.config.word_wrap,
67 'history' => 'wordwrap' },
68 { 'label' => L("Automatic indentation") ~ ':',
70 'value' => mp.config.auto_indent },
71 { 'label' => L("Line termination") ~ ':',
74 { 'label' => L("Mark end of lines") ~ ':',
75 'value' => mp.config.mark_eol,
76 'type' => 'checkbox' }
80 mp.config.word_wrap = t[0];
81 mp.config.auto_indent = t[1];
82 mp.config.eol = mp.backslash_codes(t[2], 0);
83 mp.config.mark_eol = t[3];
87 mp.actions['tab_options'] = sub (d) {
90 { 'label' => L("Tab size") ~ ':',
92 'value' => mp.config.tab_size,
93 'history' => 'tabsize' },
94 { 'label' => L("Convert tabs to spaces") ~ ':',
96 'value' => mp.config.tabs_as_spaces }
100 mp.config.tab_size = t[0];
101 mp.config.tabs_as_spaces = t[1];
105 /* default key bindings */
107 mp.keycodes['enter'] = "insert_line";
108 mp.keycodes['tab'] = "insert_tab";
109 mp.keycodes['space'] = "insert_space";
110 mp.keycodes['delete'] = "delete";
111 mp.keycodes['backspace']= "delete_left";
112 mp.keycodes['ctrl-i'] = "insert_tab";
113 mp.keycodes['ctrl-m'] = "insert_line";
114 mp.keycodes['ctrl-y'] = "delete_line";
115 mp.keycodes['ctrl-z'] = "undo";
116 mp.keycodes['f4'] = "word_wrap_paragraph";
117 mp.keycodes['f6'] = "join_paragraph";
119 /* action descriptions */
121 mp.actdesc['insert_line'] = LL("Insert line");
122 mp.actdesc['delete_line'] = LL("Delete line");
123 mp.actdesc['insert_space'] = LL("Insert space");
124 mp.actdesc['insert_tab'] = LL("Insert tab");
125 mp.actdesc['delete'] = LL("Delete character");
126 mp.actdesc['delete_left'] = LL("Delete character to the left");
127 mp.actdesc['undo'] = LL("Undo");
128 mp.actdesc['redo'] = LL("Redo");
129 mp.actdesc['join_paragraph'] = LL("Join a paragraph in one line");
130 mp.actdesc['word_wrap_paragraph'] = LL("Word-wrap a paragraph");
131 mp.actdesc['line_options'] = LL("Line options...");
132 mp.actdesc['tab_options'] = LL("Tab options...");
137 * mp.break_line - Breaks current line in two (inserts a newline).
139 * @col: column where the newline will be inserted
141 * Breaks current line in two by inserting a newline character in between.
142 * If @col is not NULL, the newline will be inserted in that column; otherwise,
143 * the current x position will be used.
145 sub mp.break_line(doc, col)
150 /* if col is NULL, set it to be the x cursor */
154 /* gets line where cursor is */
155 c = txt.lines[txt.y];
157 /* deletes from col to the end of line */
158 w = splice(c, NULL, col, -1);
160 /* set first part as current line */
161 txt.lines[txt.y] = w[0];
163 /* move to next line */
166 /* insert a new line here */
167 expand(txt.lines, txt.y, 1);
169 /* fix the x cursor position */
172 /* if autoindenting... */
173 if (mp.config.auto_indent) {
174 /* extract leading blanks in the original line
175 to prepend them to the line to be inserted */
176 local i = regex("/^[ \t]*[-\+\*]?[ \t]+/", c, 0);
178 /* substitute all non-tab characters with spaces */
179 i = sregex("/[^\t]/g", i, " ");
181 /* delete any blank in the new line */
182 w[1] = sregex("/^[ \t]*/", w[1]);
187 /* the x position is further the length of that */
191 /* put second part there (or an empty string if NULL) */
192 txt.lines[txt.y] = w[1] || '';
198 sub mp.join_line(doc)
199 /* joins the current line with the next one */
203 if (txt.y < size(txt.lines)) {
204 /* concats current line with the next one */
205 txt.lines[txt.y] = txt.lines[txt.y] ~ txt.lines[txt.y + 1];
208 adel(txt.lines, txt.y + 1);
215 sub mp.delete_line(doc)
216 /* deletes the current line */
221 /* take current position */
222 vx = mp.x2vx(txt.lines[txt.y], txt.x);
224 /* if it's the only line, just replace it */
225 if (size(txt.lines) == 1)
228 /* destroy the line */
229 adel(txt.lines, txt.y);
232 /* fix if it was the last line */
233 if (txt.y >= size(txt.lines))
234 txt.y = size(txt.lines) - 1;
236 /* move to previous x position */
237 txt.x = mp.vx2x(txt.lines[txt.y], vx);
243 sub mp.delete_char(doc)
244 /* deletes the current char */
248 /* is it over the end of line? */
249 if (txt.x == size(txt.lines[txt.y]))
254 w = splice(txt.lines[txt.y], NULL, txt.x, 1);
255 txt.lines[txt.y] = w[0];
262 sub mp.delete_range(doc, bx, by, ex, ey, v)
263 /* deletes a range of characters from a document */
267 /* move to the start of the range */
274 /* block is just one line; delete the middle part */
275 w = splice(txt.lines[by], NULL, bx, ex - bx);
277 txt.lines[by] = w[0];
280 /* block has more than one line */
284 /* delete using normal selection block */
286 /* delete from the beginning to the end of the first line */
287 w = splice(txt.lines[by], NULL, bx, -1);
288 txt.lines[by] = w[0];
290 /* delete from the beginning of the last line to
291 the end of the block */
292 w = splice(txt.lines[ey], NULL, 0, ex);
293 txt.lines[ey] = w[0];
295 /* collapse the lines in between */
296 collapse(txt.lines, by + 1, ey - by - 1);
298 /* finally join both lines */
302 /* delete using vertical selection block */
304 w = splice(txt.lines[by], NULL, bx, ex - bx);
305 txt.lines[by] = w[0];
315 sub mp.insert_string(doc, str)
316 /* inserts a string into the cursor position */
321 /* splice and change */
322 w = splice(txt.lines[txt.y], str, txt.x, 0);
323 txt.lines[txt.y] = w[0];
332 sub mp.insert(doc, a)
333 /* inserts an array of text into a document */
338 /* if a is not an array, split it */
342 /* empty array? return */
343 if ((s = size(a)) == 0)
346 /* paste first line into current position */
347 mp.insert_string(doc, a[0]);
349 /* more than just one line? */
351 /* break current line in two */
354 /* insert last line */
355 mp.insert_string(doc, a[s - 1]);
358 /* more than two lines? */
363 expand(txt.lines, txt.y, s - 2);
365 /* transfer middle lines */
367 txt.lines[txt.y++] = a[n++];
372 sub mp.wrap_words(doc)
373 /* do the word wrapping */
377 if (mp.config.word_wrap == 0)
380 /* take the column where the cursor is */
381 local c = mp.x2vx(txt.lines[txt.y], txt.x);
383 if (c >= mp.config.word_wrap &&
384 regex("/^.{1," ~ mp.config.word_wrap ~ "}\s/", txt.lines[txt.y])) {
387 /* take the coordinates */
390 /* break the line there */
391 mp.break_line(doc, w[1]);
393 /* delete the space at the end of the line */
394 txt.lines[txt.y - 1] = sregex("/\s$/", txt.lines[txt.y - 1], NULL);
399 sub mp.insert_space(doc)
400 /* inserts a space, taking wordwrapping into account */
409 sub mp.insert_tab(doc)
412 if (mp.config.tabs_as_spaces) {
413 /* number of spaces to insert */
414 local n = mp.config.tab_size -
415 ((doc.txt.x) % mp.config.tab_size);
417 while(n--) mp.insert(doc, ' ');
420 mp.insert(doc, "\t");
424 sub mp.insert_newline(doc)
425 /* inserts a newline */
432 sub mp.insert_keystroke(doc, key)
433 /* inserts from a keystroke (with undo) */
435 if (size(key) == 1) {
443 'timeout' => time() + 2,
444 'string' => sprintf(L("Unbound keystroke '%s'"), key)
452 sub mp.store_undo(doc)
453 /* stores the current txt in the undo queue */
455 queue(doc.undo, clone(doc.txt), mp.config.undo_levels);
461 /* undoes last operation */
465 if (txt = pop(doc.undo)) {
466 queue(doc.redo, clone(doc.txt), mp.config.undo_levels);
473 /* redoes last undid operation */
477 if (txt = pop(doc.redo)) {
478 queue(doc.undo, clone(doc.txt), mp.config.undo_levels);
485 sub mp.join_paragraph(doc)
486 /* joins current paragraph in just one line */
491 while ((l = txt.lines[txt.y + 1]) && size(l)) {
492 /* delete all leading blanks in the next line */
493 txt.lines[txt.y + 1] = sregex("/^[ \t]+/", txt.lines[txt.y + 1]);
495 /* move to end of line and add a space separator */
505 sub mp.word_wrap_paragraph(doc)
506 /* word wraps current paragraph */
510 if (mp.config.word_wrap == 0)
513 mp.join_paragraph(doc);
517 while (size(txt.lines[txt.y]) > mp.config.word_wrap) {
518 mp.insert_space(doc);