2 Editor book mark handling
4 Copyright (C) 2001, 2002, 2003, 2005, 2007, 2011
5 The Free Software Foundation, Inc.
10 This file is part of the Midnight Commander.
12 The Midnight Commander is free software: you can redistribute it
13 and/or modify it under the terms of the GNU General Public License as
14 published by the Free Software Foundation, either version 3 of the License,
15 or (at your option) any later version.
17 The Midnight Commander is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 * \brief Source: editor book mark handling
41 #include <sys/types.h>
45 #include "lib/global.h"
46 #include "lib/util.h" /* MAX_SAVED_BOOKMARKS */
48 #include "editwidget.h"
50 /*** global variables ****************************************************************************/
52 /*** file scope macro definitions ****************************************************************/
54 /*** file scope type declarations ****************************************************************/
56 /*** file scope variables ************************************************************************/
58 /*** file scope functions ************************************************************************/
59 /* --------------------------------------------------------------------------------------------- */
61 /** note, if there is more than one bookmark on a line, then they are
62 appended after each other and the last one is always the one found
63 by book_mark_found() i.e. last in is the one seen */
65 static struct _book_mark
*
66 double_marks (WEdit
* edit
, struct _book_mark
*p
)
71 while (p
->next
->line
== p
->line
)
76 /* --------------------------------------------------------------------------------------------- */
77 /** returns the first bookmark on or before this line */
80 book_mark_find (WEdit
* edit
, int line
)
84 if (edit
->book_mark
== NULL
)
86 /* must have an imaginary top bookmark at line -1 to make things less complicated */
87 edit
->book_mark
= g_malloc0 (sizeof (struct _book_mark
));
88 edit
->book_mark
->line
= -1;
89 return edit
->book_mark
;
92 for (p
= edit
->book_mark
; p
!= NULL
; p
= p
->next
)
95 break; /* gone past it going downward */
99 if (p
->next
->line
> line
)
102 return double_marks (edit
, p
);
108 return double_marks (edit
, p
);
112 for (p
= edit
->book_mark
; p
!= NULL
; p
= p
->prev
)
114 if (p
->next
!= NULL
&& p
->next
->line
<= line
)
115 break; /* gone past it going upward */
121 if (p
->next
->line
> line
)
124 return double_marks (edit
, p
);
130 return double_marks (edit
, p
);
135 return NULL
; /* can't get here */
138 /* --------------------------------------------------------------------------------------------- */
139 /*** public functions ****************************************************************************/
140 /* --------------------------------------------------------------------------------------------- */
142 /** returns true if a bookmark exists at this line of color c */
145 book_mark_query_color (WEdit
* edit
, int line
, int c
)
147 struct _book_mark
*p
;
149 if (edit
->book_mark
== NULL
)
152 for (p
= book_mark_find (edit
, line
); p
!= NULL
; p
= p
->prev
)
162 /* --------------------------------------------------------------------------------------------- */
163 /** insert a bookmark at this line */
166 book_mark_insert (WEdit
* edit
, size_t line
, int c
)
168 struct _book_mark
*p
, *q
;
170 p
= book_mark_find (edit
, line
);
174 /* already exists, so just change the color */
178 edit
->force
|= REDRAW_LINE
;
183 edit
->force
|= REDRAW_LINE
;
184 /* create list entry */
185 q
= g_malloc0 (sizeof (struct _book_mark
));
186 q
->line
= (int) line
;
189 /* insert into list */
196 /* --------------------------------------------------------------------------------------------- */
197 /** remove a bookmark if there is one at this line matching this color - c of -1 clear all
198 * @returns non-zero on not-found
202 book_mark_clear (WEdit
* edit
, int line
, int c
)
204 struct _book_mark
*p
, *q
;
207 if (edit
->book_mark
== NULL
)
210 for (p
= book_mark_find (edit
, line
); p
!= NULL
; p
= q
)
213 if (p
->line
== line
&& (p
->c
== c
|| c
== -1))
216 edit
->book_mark
= p
->prev
;
217 p
->prev
->next
= p
->next
;
219 p
->next
->prev
= p
->prev
;
221 edit
->force
|= REDRAW_LINE
;
225 /* if there is only our dummy book mark left, clear it for speed */
226 if (edit
->book_mark
->line
== -1 && !edit
->book_mark
->next
)
228 g_free (edit
->book_mark
);
229 edit
->book_mark
= NULL
;
234 /* --------------------------------------------------------------------------------------------- */
235 /** clear all bookmarks matching this color, if c is -1 clears all */
238 book_mark_flush (WEdit
* edit
, int c
)
240 struct _book_mark
*p
, *q
;
242 if (edit
->book_mark
== NULL
)
245 while (edit
->book_mark
->prev
!= NULL
)
246 edit
->book_mark
= edit
->book_mark
->prev
;
248 for (q
= edit
->book_mark
->next
; q
!= NULL
; q
= p
)
251 if (q
->c
== c
|| c
== -1)
253 q
->prev
->next
= q
->next
;
259 if (edit
->book_mark
->next
== NULL
)
261 g_free (edit
->book_mark
);
262 edit
->book_mark
= NULL
;
265 edit
->force
|= REDRAW_PAGE
;
268 /* --------------------------------------------------------------------------------------------- */
269 /** shift down bookmarks after this line */
272 book_mark_inc (WEdit
* edit
, int line
)
276 struct _book_mark
*p
;
277 p
= book_mark_find (edit
, line
);
278 for (p
= p
->next
; p
!= NULL
; p
= p
->next
)
283 /* --------------------------------------------------------------------------------------------- */
284 /** shift up bookmarks after this line */
287 book_mark_dec (WEdit
* edit
, int line
)
289 if (edit
->book_mark
!= NULL
)
291 struct _book_mark
*p
;
292 p
= book_mark_find (edit
, line
);
293 for (p
= p
->next
; p
!= NULL
; p
= p
->next
)
298 /* --------------------------------------------------------------------------------------------- */
299 /** prepare line positions of bookmarks to be saved to file */
302 book_mark_serialize (WEdit
* edit
, int color
)
304 struct _book_mark
*p
;
306 if (edit
->serialized_bookmarks
!= NULL
)
307 g_array_set_size (edit
->serialized_bookmarks
, 0);
309 if (edit
->book_mark
!= NULL
)
311 if (edit
->serialized_bookmarks
== NULL
)
312 edit
->serialized_bookmarks
= g_array_sized_new (FALSE
, FALSE
, sizeof (size_t),
313 MAX_SAVED_BOOKMARKS
);
315 for (p
= book_mark_find (edit
, 0); p
!= NULL
; p
= p
->next
)
316 if (p
->c
== color
&& p
->line
>= 0)
317 g_array_append_val (edit
->serialized_bookmarks
, p
->line
);
321 /* --------------------------------------------------------------------------------------------- */
322 /** restore bookmarks from saved line positions */
325 book_mark_restore (WEdit
* edit
, int color
)
327 if (edit
->serialized_bookmarks
!= NULL
)
331 for (i
= 0; i
< edit
->serialized_bookmarks
->len
; i
++)
332 book_mark_insert (edit
, g_array_index (edit
->serialized_bookmarks
, size_t, i
), color
);
336 /* --------------------------------------------------------------------------------------------- */