1 /* editor low level data handling and cursor fundamentals.
3 Copyright (C) 1996, 1997, 1998, 2001, 2002, 2003, 2004, 2005, 2006,
4 2007 Free Software Foundation, Inc.
6 Authors: 1996, 1997 Paul Sheer
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 * \brief Source: editor low level data handling and cursor fundamentals
33 #include <sys/types.h>
42 #include "../src/global.h"
44 #include "edit-impl.h"
46 #include "edit-widget.h"
47 #include "editcmddef.h"
50 #include "../src/tty/color.h" /* EDITOR_NORMAL_COLOR */
51 #include "../src/tty/tty.h" /* attrset() */
52 #include "../src/tty/key.h" /* is_idle() */
54 #include "../src/widget.h" /* buttonbar_redraw() */
55 #include "../src/cmd.h" /* view_other_cmd() */
56 #include "../src/user.h" /* user_menu_cmd() */
57 #include "../src/wtools.h" /* query_dialog() */
58 #include "../src/timefmt.h" /* time formatting */
59 #include "../src/strutil.h" /* utf string functions */
60 #include "../src/charsets.h" /* get_codepage_id */
61 #include "../src/main.h" /* source_codepage */
64 what editor are we going to emulate? one of EDIT_KEY_EMULATION_NORMAL
65 or EDIT_KEY_EMULATION_EMACS
67 int edit_key_emulation
= EDIT_KEY_EMULATION_NORMAL
;
69 int option_word_wrap_line_length
= 72;
70 int option_typewriter_wrap
= 0;
71 int option_auto_para_formatting
= 0;
72 int option_tab_spacing
= 8;
73 int option_fill_tabs_with_spaces
= 0;
74 int option_return_does_auto_indent
= 1;
75 int option_backspace_through_tabs
= 0;
76 int option_fake_half_tabs
= 1;
77 int option_save_mode
= EDIT_QUICK_SAVE
;
78 int option_save_position
= 1;
79 int option_max_undo
= 32768;
80 int option_persistent_selections
= 1;
81 int option_line_state
= 0;
82 int option_line_state_width
= 0;
84 int option_edit_right_extreme
= 0;
85 int option_edit_left_extreme
= 0;
86 int option_edit_top_extreme
= 0;
87 int option_edit_bottom_extreme
= 0;
88 int enable_show_tabs_tws
= 1;
90 const char *option_whole_chars_search
= "0123456789abcdefghijklmnopqrstuvwxyz_";
91 char *option_backup_ext
= NULL
;
93 int edit_stack_iterator
= 0;
94 edit_stack_type edit_history_moveto
[MAX_HISTORY_MOVETO
];
95 /* magic sequense for say than block is vertical */
96 const char VERTICAL_MAGIC
[] = {'\1', '\1', '\1', '\1', '\n'};
99 * here's a quick sketch of the layout: (don't run this through indent.)
101 * (b1 is buffers1 and b2 is buffers2)
104 * \0\0\0\0\0m e _ f i l e . \nf i n . \n|T h i s _ i s _ s o\0\0\0\0\0\0\0\0\0
105 * ______________________________________|______________________________________
107 * ... | b2[2] | b2[1] | b2[0] | b1[0] | b1[1] | b1[2] | ...
108 * |-> |-> |-> |-> |-> |-> |
110 * _<------------------------->|<----------------->_
111 * WEdit->curs2 | WEdit->curs1
116 * file end|||file beginning
126 static void user_menu (WEdit
*edit
);
128 int edit_get_byte (WEdit
* edit
, long byte_index
)
131 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0)
134 if (byte_index
>= edit
->curs1
) {
135 p
= edit
->curs1
+ edit
->curs2
- byte_index
- 1;
136 return edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1];
138 return edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
][byte_index
& M_EDIT_BUF_SIZE
];
142 char *edit_get_byte_ptr (WEdit
* edit
, long byte_index
)
146 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0)
149 if (byte_index
>= edit
->curs1
) {
150 p
= edit
->curs1
+ edit
->curs2
- byte_index
- 1;
151 return (char *) (edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
]+(EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1));
153 return (char *) (edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
]+(byte_index
& M_EDIT_BUF_SIZE
));
157 char *edit_get_buf_ptr (WEdit
* edit
, long byte_index
)
161 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) ) {
165 if ( byte_index
< 0 ) {
169 if (byte_index
>= edit
->curs1
) {
170 p
= edit
->curs1
+ edit
->curs2
- 1;
171 return (char *) (edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
] + (EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1));
173 return (char *) (edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
] + (0 & M_EDIT_BUF_SIZE
));
177 int edit_get_utf (WEdit
* edit
, long byte_index
, int *char_width
)
182 gchar
*next_ch
= NULL
;
185 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0) {
191 str
= edit_get_byte_ptr (edit
, byte_index
);
192 res
= g_utf8_get_char_validated (str
, -1);
199 /* Calculate UTF-8 char width */
200 next_ch
= g_utf8_next_char(str
);
202 width
= next_ch
- str
;
212 int edit_get_prev_utf (WEdit
* edit
, long byte_index
, int *char_width
)
214 gchar
*str
, *buf
= NULL
;
217 gchar
*next_ch
= NULL
;
220 if ( byte_index
> 0 ) {
224 ch
= edit_get_utf (edit
, byte_index
, &width
);
230 if ( byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0 ) {
235 str
= edit_get_byte_ptr (edit
, byte_index
);
236 buf
= edit_get_buf_ptr (edit
, byte_index
);
237 /* get prev utf8 char */
239 str
= g_utf8_find_prev_char (buf
, str
);
241 res
= g_utf8_get_char_validated (str
, -1);
247 /* Calculate UTF-8 char width */
248 next_ch
= g_utf8_next_char(str
);
250 width
= next_ch
- str
;
261 * Initialize the buffers for an empty files.
264 edit_init_buffers (WEdit
*edit
)
268 for (j
= 0; j
<= MAXBUFF
; j
++) {
269 edit
->buffers1
[j
] = NULL
;
270 edit
->buffers2
[j
] = NULL
;
275 edit
->buffers2
[0] = g_malloc (EDIT_BUF_SIZE
);
279 * Load file OR text into buffers. Set cursor to the beginning of file.
283 edit_load_file_fast (WEdit
*edit
, const char *filename
)
291 edit
->curs2
= edit
->last_byte
;
292 buf2
= edit
->curs2
>> S_EDIT_BUF_SIZE
;
295 cp_id
= get_codepage_id (source_codepage
);
298 edit
->utf8
= str_isutf8 (cp_id
);
300 if ((file
= mc_open (filename
, O_RDONLY
| O_BINARY
)) == -1) {
301 GString
*errmsg
= g_string_new(NULL
);
302 g_string_sprintf(errmsg
, _(" Cannot open %s for reading "), filename
);
303 edit_error_dialog (_("Error"), get_sys_error (errmsg
->str
));
304 g_string_free (errmsg
, TRUE
);
308 if (!edit
->buffers2
[buf2
])
309 edit
->buffers2
[buf2
] = g_malloc (EDIT_BUF_SIZE
);
312 (char *) edit
->buffers2
[buf2
] + EDIT_BUF_SIZE
-
313 (edit
->curs2
& M_EDIT_BUF_SIZE
),
314 edit
->curs2
& M_EDIT_BUF_SIZE
);
316 for (buf
= buf2
- 1; buf
>= 0; buf
--) {
317 /* edit->buffers2[0] is already allocated */
318 if (!edit
->buffers2
[buf
])
319 edit
->buffers2
[buf
] = g_malloc (EDIT_BUF_SIZE
);
320 mc_read (file
, (char *) edit
->buffers2
[buf
], EDIT_BUF_SIZE
);
327 /* detecting an error on save is easy: just check if every byte has been written. */
328 /* detecting an error on read, is not so easy 'cos there is not way to tell
329 whether you read everything or not. */
330 /* FIXME: add proper `triple_pipe_open' to read, write and check errors. */
331 static const struct edit_filters
{
332 const char *read
, *write
, *extension
;
334 { "xz -cd %s 2>&1", "xz > %s", ".xz" },
335 { "lzma -cd %s 2>&1", "lzma > %s", ".lzma" },
336 { "bzip2 -cd %s 2>&1", "bzip2 > %s", ".bz2" },
337 { "gzip -cd %s 2>&1", "gzip > %s", ".gz" },
338 { "gzip -cd %s 2>&1", "gzip > %s", ".Z" }
341 /* Return index of the filter or -1 is there is no appropriate filter */
342 static int edit_find_filter (const char *filename
)
347 l
= strlen (filename
);
348 for (i
= 0; i
< sizeof (all_filters
) / sizeof (all_filters
[0]); i
++) {
349 e
= strlen (all_filters
[i
].extension
);
351 if (!strcmp (all_filters
[i
].extension
, filename
+ l
- e
))
358 edit_get_filter (const char *filename
)
361 char *p
, *quoted_name
;
362 i
= edit_find_filter (filename
);
365 quoted_name
= name_quote (filename
, 0);
366 l
= str_term_width1 (quoted_name
);
367 p
= g_malloc (str_term_width1 (all_filters
[i
].read
) + l
+ 2);
368 sprintf (p
, all_filters
[i
].read
, quoted_name
);
369 g_free (quoted_name
);
374 edit_get_write_filter (const char *write_name
, const char *filename
)
378 i
= edit_find_filter (filename
);
381 writename
= name_quote (write_name
, 0);
382 l
= str_term_width1 (writename
);
383 p
= g_malloc (str_term_width1 (all_filters
[i
].write
) + l
+ 2);
384 sprintf (p
, all_filters
[i
].write
, writename
);
390 edit_insert_stream (WEdit
* edit
, FILE * f
)
394 while ((c
= fgetc (f
)) >= 0) {
395 edit_insert (edit
, c
);
401 long edit_write_stream (WEdit
* edit
, FILE * f
)
404 for (i
= 0; i
< edit
->last_byte
; i
++)
405 if (fputc (edit_get_byte (edit
, i
), f
) < 0)
410 #define TEMP_BUF_LEN 1024
412 /* inserts a file at the cursor, returns 1 on success */
414 edit_insert_file (WEdit
*edit
, const char *filename
)
417 if ((p
= edit_get_filter (filename
))) {
419 long current
= edit
->curs1
;
420 f
= (FILE *) popen (p
, "r");
422 edit_insert_stream (edit
, f
);
423 edit_cursor_move (edit
, current
- edit
->curs1
);
424 if (pclose (f
) > 0) {
425 GString
*errmsg
= g_string_new (NULL
);
426 g_string_sprintf (errmsg
, _(" Error reading from pipe: %s "), p
);
427 edit_error_dialog (_("Error"), errmsg
->str
);
428 g_string_free (errmsg
, TRUE
);
433 GString
*errmsg
= g_string_new (NULL
);
434 g_string_sprintf (errmsg
, _(" Cannot open pipe for reading: %s "), p
);
435 edit_error_dialog (_("Error"), errmsg
->str
);
436 g_string_free (errmsg
, TRUE
);
442 int i
, file
, blocklen
;
443 long current
= edit
->curs1
;
444 int vertical_insertion
= 0;
446 if ((file
= mc_open (filename
, O_RDONLY
| O_BINARY
)) == -1)
448 buf
= g_malloc (TEMP_BUF_LEN
);
449 blocklen
= mc_read (file
, buf
, sizeof(VERTICAL_MAGIC
));
451 /* if contain signature VERTICAL_MAGIC tnen it vertical block */
452 if ( memcmp(buf
, VERTICAL_MAGIC
, sizeof(VERTICAL_MAGIC
)) == 0 ) {
453 vertical_insertion
= 1;
455 mc_lseek (file
, 0, SEEK_SET
);
458 if (vertical_insertion
) {
459 blocklen
= edit_insert_column_of_text_from_file (edit
, file
);
461 while ((blocklen
= mc_read (file
, (char *) buf
, TEMP_BUF_LEN
)) > 0) {
462 for (i
= 0; i
< blocklen
; i
++)
463 edit_insert (edit
, buf
[i
]);
466 edit_cursor_move (edit
, current
- edit
->curs1
);
475 /* Open file and create it if necessary. Return 0 for success, 1 for error. */
477 check_file_access (WEdit
*edit
, const char *filename
, struct stat
*st
)
480 GString
*errmsg
= (GString
*) 0;
482 /* Try opening an existing file */
483 file
= mc_open (filename
, O_NONBLOCK
| O_RDONLY
| O_BINARY
, 0666);
487 * Try creating the file. O_EXCL prevents following broken links
488 * and opening existing files.
492 O_NONBLOCK
| O_RDONLY
| O_BINARY
| O_CREAT
| O_EXCL
,
495 g_string_sprintf (errmsg
= g_string_new (NULL
),
496 _(" Cannot open %s for reading "), filename
);
499 /* New file, delete it if it's not modified or saved */
500 edit
->delete_file
= 1;
504 /* Check what we have opened */
505 if (mc_fstat (file
, st
) < 0) {
506 g_string_sprintf (errmsg
= g_string_new (NULL
),
507 _(" Cannot get size/permissions for %s "), filename
);
511 /* We want to open regular files only */
512 if (!S_ISREG (st
->st_mode
)) {
513 g_string_sprintf (errmsg
= g_string_new (NULL
),
514 _(" %s is not a regular file "), filename
);
519 * Don't delete non-empty files.
520 * O_EXCL should prevent it, but let's be on the safe side.
522 if (st
->st_size
> 0) {
523 edit
->delete_file
= 0;
526 if (st
->st_size
>= SIZE_LIMIT
) {
527 g_string_sprintf (errmsg
= g_string_new (NULL
),
528 _(" File %s is too large "), filename
);
533 (void) mc_close (file
);
535 edit_error_dialog (_("Error"), errmsg
->str
);
536 g_string_free (errmsg
, TRUE
);
543 * Open the file and load it into the buffers, either directly or using
544 * a filter. Return 0 on success, 1 on error.
546 * Fast loading (edit_load_file_fast) is used when the file size is
547 * known. In this case the data is read into the buffers by blocks.
548 * If the file size is not known, the data is loaded byte by byte in
552 edit_load_file (WEdit
*edit
)
556 /* Cannot do fast load if a filter is used */
557 if (edit_find_filter (edit
->filename
) >= 0)
561 * VFS may report file size incorrectly, and slow load is not a big
562 * deal considering overhead in VFS.
564 if (!vfs_file_is_local (edit
->filename
))
568 * FIXME: line end translation should disable fast loading as well
569 * Consider doing fseek() to the end and ftell() for the real size.
572 if (*edit
->filename
) {
573 /* If we are dealing with a real file, check that it exists */
574 if (check_file_access (edit
, edit
->filename
, &edit
->stat1
))
577 /* nothing to load */
581 edit_init_buffers (edit
);
584 edit
->last_byte
= edit
->stat1
.st_size
;
585 edit_load_file_fast (edit
, edit
->filename
);
586 /* If fast load was used, the number of lines wasn't calculated */
587 edit
->total_lines
= edit_count_lines (edit
, 0, edit
->last_byte
);
590 const char *codepage_id
;
593 if (*edit
->filename
) {
594 edit
->stack_disable
= 1;
595 if (!edit_insert_file (edit
, edit
->filename
)) {
599 edit
->stack_disable
= 0;
603 codepage_id
= get_codepage_id( source_codepage
);
605 edit
->utf8
= str_isutf8 ( codepage_id
);
611 /* Restore saved cursor position in the file */
613 edit_load_position (WEdit
*edit
)
618 if (!edit
->filename
|| !*edit
->filename
)
621 filename
= vfs_canon (edit
->filename
);
622 load_file_position (filename
, &line
, &column
);
625 edit_move_to_line (edit
, line
- 1);
626 edit
->prev_col
= column
;
627 edit_move_to_prev_col (edit
, edit_bol (edit
, edit
->curs1
));
628 edit_move_display (edit
, line
- (edit
->num_widget_lines
/ 2));
631 /* Save cursor position in the file */
633 edit_save_position (WEdit
*edit
)
637 if (!edit
->filename
|| !*edit
->filename
)
640 filename
= vfs_canon (edit
->filename
);
641 save_file_position (filename
, edit
->curs_line
+ 1, edit
->curs_col
);
645 /* Clean the WEdit stricture except the widget part */
647 edit_purge_widget (WEdit
*edit
)
649 int len
= sizeof (WEdit
) - sizeof (Widget
);
650 char *start
= (char *) edit
+ sizeof (Widget
);
651 memset (start
, 0, len
);
652 edit
->macro_i
= -1; /* not recording a macro */
655 #define space_width 1
658 * Fill in the edit structure. Return NULL on failure. Pass edit as
659 * NULL to allocate a new structure.
661 * If line is 0, try to restore saved position. Otherwise put the
662 * cursor on that line and show it in the middle of the screen.
665 edit_init (WEdit
*edit
, int lines
, int columns
, const char *filename
,
669 option_auto_syntax
= 1; /* Resetting to auto on every invokation */
670 if ( option_line_state
) {
671 option_line_state_width
= LINE_STATE_WIDTH
;
673 option_line_state_width
= 0;
678 * Expand option_whole_chars_search by national letters using
682 static char option_whole_chars_search_buf
[256];
684 if (option_whole_chars_search_buf
!= option_whole_chars_search
) {
686 size_t len
= str_term_width1 (option_whole_chars_search
);
688 strcpy (option_whole_chars_search_buf
,
689 option_whole_chars_search
);
691 for (i
= 1; i
<= sizeof (option_whole_chars_search_buf
); i
++) {
692 if (g_ascii_islower ((gchar
) i
) && !strchr (option_whole_chars_search
, i
)) {
693 option_whole_chars_search_buf
[len
++] = i
;
697 option_whole_chars_search_buf
[len
] = 0;
698 option_whole_chars_search
= option_whole_chars_search_buf
;
700 #endif /* ENABLE_NLS */
701 edit
= g_malloc0 (sizeof (WEdit
));
705 edit_purge_widget (edit
);
706 edit
->num_widget_lines
= lines
;
708 edit
->num_widget_columns
= columns
;
709 edit
->stat1
.st_mode
= S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IROTH
;
710 edit
->stat1
.st_uid
= getuid ();
711 edit
->stat1
.st_gid
= getgid ();
712 edit
->stat1
.st_mtime
= 0;
714 edit
->force
|= REDRAW_PAGE
;
715 edit_set_filename (edit
, filename
);
716 edit
->stack_size
= START_STACK_SIZE
;
717 edit
->stack_size_mask
= START_STACK_SIZE
- 1;
718 edit
->undo_stack
= g_malloc ((edit
->stack_size
+ 10) * sizeof (long));
719 if (edit_load_file (edit
)) {
720 /* edit_load_file already gives an error message */
725 edit
->loading_done
= 1;
728 edit_load_syntax (edit
, 0, 0);
731 edit_get_syntax_color (edit
, -1, &color
);
734 /* load saved cursor position */
735 if ((line
== 0) && option_save_position
) {
736 edit_load_position (edit
);
740 edit_move_display (edit
, line
- 1);
741 edit_move_to_line (edit
, line
- 1);
744 edit_load_user_map(edit
);
749 /* Clear the edit struct, freeing everything in it. Return 1 on success */
751 edit_clean (WEdit
*edit
)
758 /* a stale lock, remove it */
760 edit
->locked
= edit_unlock_file (edit
->filename
);
762 /* save cursor position */
763 if (option_save_position
)
764 edit_save_position (edit
);
766 /* File specified on the mcedit command line and never saved */
767 if (edit
->delete_file
)
768 unlink (edit
->filename
);
770 edit_free_syntax_rules (edit
);
771 book_mark_flush (edit
, -1);
772 for (; j
<= MAXBUFF
; j
++) {
773 g_free (edit
->buffers1
[j
]);
774 g_free (edit
->buffers2
[j
]);
777 g_free (edit
->undo_stack
);
778 g_free (edit
->filename
);
783 mc_search_free(edit
->search
);
786 edit_purge_widget (edit
);
792 /* returns 1 on success */
793 int edit_renew (WEdit
* edit
)
795 int lines
= edit
->num_widget_lines
;
796 int columns
= edit
->num_widget_columns
;
800 if (!edit_init (edit
, lines
, columns
, "", 0))
806 * Load a new file into the editor. If it fails, preserve the old file.
807 * To do it, allocate a new widget, initialize it and, if the new file
808 * was loaded, copy the data to the old widget.
809 * Return 1 on success, 0 on failure.
812 edit_reload (WEdit
*edit
, const char *filename
)
815 int lines
= edit
->num_widget_lines
;
816 int columns
= edit
->num_widget_columns
;
818 e
= g_malloc0 (sizeof (WEdit
));
819 e
->widget
= edit
->widget
;
820 if (!edit_init (e
, lines
, columns
, filename
, 0)) {
825 memcpy (edit
, e
, sizeof (WEdit
));
831 * Load a new file into the editor and set line. If it fails, preserve the old file.
832 * To do it, allocate a new widget, initialize it and, if the new file
833 * was loaded, copy the data to the old widget.
834 * Return 1 on success, 0 on failure.
837 edit_reload_line (WEdit
*edit
, const char *filename
, long line
)
840 int lines
= edit
->num_widget_lines
;
841 int columns
= edit
->num_widget_columns
;
843 e
= g_malloc0 (sizeof (WEdit
));
844 e
->widget
= edit
->widget
;
845 if (!edit_init (e
, lines
, columns
, filename
, line
)) {
850 memcpy (edit
, e
, sizeof (WEdit
));
857 Recording stack for undo:
858 The following is an implementation of a compressed stack. Identical
859 pushes are recorded by a negative prefix indicating the number of times the
860 same char was pushed. This saves space for repeated curs-left or curs-right
877 If the stack long int is 0-255 it represents a normal insert (from a backspace),
878 256-512 is an insert ahead (from a delete), If it is betwen 600 and 700 it is one
879 of the cursor functions #define'd in edit-impl.h. 1000 through 700'000'000 is to
880 set edit->mark1 position. 700'000'000 through 1400'000'000 is to set edit->mark2
883 The only way the cursor moves or the buffer is changed is through the routines:
884 insert, backspace, insert_ahead, delete, and cursor_move.
885 These record the reverse undo movements onto the stack each time they are
888 Each key press results in a set of actions (insert; delete ...). So each time
889 a key is pressed the current position of start_display is pushed as
890 KEY_PRESS + start_display. Then for undoing, we pop until we get to a number
891 over KEY_PRESS. We then assign this number less KEY_PRESS to start_display. So undo
892 tracks scrolling and key actions exactly. (KEY_PRESS is about (2^31) * (2/3) = 1400'000'000)
896 void edit_push_action (WEdit
* edit
, long c
,...)
898 unsigned long sp
= edit
->stack_pointer
;
902 /* first enlarge the stack if necessary */
903 if (sp
> edit
->stack_size
- 10) { /* say */
904 if (option_max_undo
< 256)
905 option_max_undo
= 256;
906 if (edit
->stack_size
< (unsigned long) option_max_undo
) {
907 t
= g_realloc (edit
->undo_stack
, (edit
->stack_size
* 2 + 10) * sizeof (long));
909 edit
->undo_stack
= t
;
910 edit
->stack_size
<<= 1;
911 edit
->stack_size_mask
= edit
->stack_size
- 1;
915 spm1
= (edit
->stack_pointer
- 1) & edit
->stack_size_mask
;
916 if (edit
->stack_disable
)
919 #ifdef FAST_MOVE_CURSOR
920 if (c
== CURS_LEFT_LOTS
|| c
== CURS_RIGHT_LOTS
) {
922 edit
->undo_stack
[sp
] = c
== CURS_LEFT_LOTS
? CURS_LEFT
: CURS_RIGHT
;
923 edit
->stack_pointer
= (edit
->stack_pointer
+ 1) & edit
->stack_size_mask
;
925 c
= -(va_arg (ap
, int));
928 #endif /* ! FAST_MOVE_CURSOR */
929 if (edit
->stack_bottom
!= sp
930 && spm1
!= edit
->stack_bottom
931 && ((sp
- 2) & edit
->stack_size_mask
) != edit
->stack_bottom
) {
933 if (edit
->undo_stack
[spm1
] < 0) {
934 d
= edit
->undo_stack
[(sp
- 2) & edit
->stack_size_mask
];
936 if (edit
->undo_stack
[spm1
] > -1000000000) {
937 if (c
< KEY_PRESS
) /* --> no need to push multiple do-nothings */
938 edit
->undo_stack
[spm1
]--;
942 /* #define NO_STACK_CURSMOVE_ANIHILATION */
943 #ifndef NO_STACK_CURSMOVE_ANIHILATION
944 else if ((c
== CURS_LEFT
&& d
== CURS_RIGHT
)
945 || (c
== CURS_RIGHT
&& d
== CURS_LEFT
)) { /* a left then a right anihilate each other */
946 if (edit
->undo_stack
[spm1
] == -2)
947 edit
->stack_pointer
= spm1
;
949 edit
->undo_stack
[spm1
]++;
954 d
= edit
->undo_stack
[spm1
];
957 return; /* --> no need to push multiple do-nothings */
958 edit
->undo_stack
[sp
] = -2;
961 #ifndef NO_STACK_CURSMOVE_ANIHILATION
962 else if ((c
== CURS_LEFT
&& d
== CURS_RIGHT
)
963 || (c
== CURS_RIGHT
&& d
== CURS_LEFT
)) { /* a left then a right anihilate each other */
964 edit
->stack_pointer
= spm1
;
970 edit
->undo_stack
[sp
] = c
;
973 edit
->stack_pointer
= (edit
->stack_pointer
+ 1) & edit
->stack_size_mask
;
975 /* if the sp wraps round and catches the stack_bottom then erase
976 * the first set of actions on the stack to make space - by moving
977 * stack_bottom forward one "key press" */
978 c
= (edit
->stack_pointer
+ 2) & edit
->stack_size_mask
;
979 if ((unsigned long) c
== edit
->stack_bottom
||
980 (((unsigned long) c
+ 1) & edit
->stack_size_mask
) == edit
->stack_bottom
)
982 edit
->stack_bottom
= (edit
->stack_bottom
+ 1) & edit
->stack_size_mask
;
983 } while (edit
->undo_stack
[edit
->stack_bottom
] < KEY_PRESS
&& edit
->stack_bottom
!= edit
->stack_pointer
);
985 /*If a single key produced enough pushes to wrap all the way round then we would notice that the [stack_bottom] does not contain KEY_PRESS. The stack is then initialised: */
986 if (edit
->stack_pointer
!= edit
->stack_bottom
&& edit
->undo_stack
[edit
->stack_bottom
] < KEY_PRESS
)
987 edit
->stack_bottom
= edit
->stack_pointer
= 0;
991 TODO: if the user undos until the stack bottom, and the stack has not wrapped,
992 then the file should be as it was when he loaded up. Then set edit->modified to 0.
995 pop_action (WEdit
* edit
)
998 unsigned long sp
= edit
->stack_pointer
;
999 if (sp
== edit
->stack_bottom
) {
1000 return STACK_BOTTOM
;
1002 sp
= (sp
- 1) & edit
->stack_size_mask
;
1003 if ((c
= edit
->undo_stack
[sp
]) >= 0) {
1004 /* edit->undo_stack[sp] = '@'; */
1005 edit
->stack_pointer
= (edit
->stack_pointer
- 1) & edit
->stack_size_mask
;
1008 if (sp
== edit
->stack_bottom
) {
1009 return STACK_BOTTOM
;
1011 c
= edit
->undo_stack
[(sp
- 1) & edit
->stack_size_mask
];
1012 if (edit
->undo_stack
[sp
] == -2) {
1013 /* edit->undo_stack[sp] = '@'; */
1014 edit
->stack_pointer
= sp
;
1016 edit
->undo_stack
[sp
]++;
1021 /* is called whenever a modification is made by one of the four routines below */
1022 static inline void edit_modification (WEdit
* edit
)
1024 edit
->caches_valid
= 0;
1025 edit
->screen_modified
= 1;
1027 /* raise lock when file modified */
1028 if (!edit
->modified
&& !edit
->delete_file
)
1029 edit
->locked
= edit_lock_file (edit
->filename
);
1034 Basic low level single character buffer alterations and movements at the cursor.
1035 Returns char passed over, inserted or removed.
1039 edit_insert (WEdit
*edit
, int c
)
1041 /* check if file has grown to large */
1042 if (edit
->last_byte
>= SIZE_LIMIT
)
1045 /* first we must update the position of the display window */
1046 if (edit
->curs1
< edit
->start_display
) {
1047 edit
->start_display
++;
1052 /* Mark file as modified, unless the file hasn't been fully loaded */
1053 if (edit
->loading_done
) {
1054 edit_modification (edit
);
1057 /* now we must update some info on the file and check if a redraw is required */
1059 if (edit
->book_mark
)
1060 book_mark_inc (edit
, edit
->curs_line
);
1062 edit
->total_lines
++;
1063 edit
->force
|= REDRAW_LINE_ABOVE
| REDRAW_AFTER_CURSOR
;
1066 /* save the reverse command onto the undo stack */
1067 edit_push_action (edit
, BACKSPACE
);
1069 /* update markers */
1070 edit
->mark1
+= (edit
->mark1
> edit
->curs1
);
1071 edit
->mark2
+= (edit
->mark2
> edit
->curs1
);
1072 edit
->last_get_rule
+= (edit
->last_get_rule
> edit
->curs1
);
1074 /* add a new buffer if we've reached the end of the last one */
1075 if (!(edit
->curs1
& M_EDIT_BUF_SIZE
))
1076 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] =
1077 g_malloc (EDIT_BUF_SIZE
);
1079 /* perform the insertion */
1080 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
][edit
->
1081 curs1
& M_EDIT_BUF_SIZE
]
1082 = (unsigned char) c
;
1084 /* update file length */
1087 /* update cursor position */
1092 edit_insert_over (WEdit
* edit
)
1094 for (int i
= 0; i
< edit
->over_col
; i
++ ) {
1095 edit_insert (edit
, ' ');
1100 /* same as edit_insert and move left */
1101 void edit_insert_ahead (WEdit
* edit
, int c
)
1103 if (edit
->last_byte
>= SIZE_LIMIT
)
1105 if (edit
->curs1
< edit
->start_display
) {
1106 edit
->start_display
++;
1110 edit_modification (edit
);
1112 if (edit
->book_mark
)
1113 book_mark_inc (edit
, edit
->curs_line
);
1114 edit
->total_lines
++;
1115 edit
->force
|= REDRAW_AFTER_CURSOR
;
1117 edit_push_action (edit
, DELCHAR
);
1119 edit
->mark1
+= (edit
->mark1
>= edit
->curs1
);
1120 edit
->mark2
+= (edit
->mark2
>= edit
->curs1
);
1121 edit
->last_get_rule
+= (edit
->last_get_rule
>= edit
->curs1
);
1123 if (!((edit
->curs2
+ 1) & M_EDIT_BUF_SIZE
))
1124 edit
->buffers2
[(edit
->curs2
+ 1) >> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1125 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
) - 1] = c
;
1132 int edit_delete (WEdit
* edit
, const int byte_delete
)
1141 edit
->mark1
-= (edit
->mark1
> edit
->curs1
);
1142 edit
->mark2
-= (edit
->mark2
> edit
->curs1
);
1143 edit
->last_get_rule
-= (edit
->last_get_rule
> edit
->curs1
);
1146 /* if byte_delete = 1 then delete only one byte not multibyte char*/
1147 if ( edit
->utf8
&& byte_delete
== 0 ) {
1148 edit_get_utf (edit
, edit
->curs1
, &cw
);
1152 for ( i
= 1; i
<= cw
; i
++ ) {
1153 p
= edit
->buffers2
[(edit
->curs2
- 1) >> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- ((edit
->curs2
- 1) & M_EDIT_BUF_SIZE
) - 1];
1155 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1156 g_free (edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
]);
1157 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = NULL
;
1161 edit_push_action (edit
, p
+ 256);
1164 edit_modification (edit
);
1166 if (edit
->book_mark
)
1167 book_mark_dec (edit
, edit
->curs_line
);
1168 edit
->total_lines
--;
1169 edit
->force
|= REDRAW_AFTER_CURSOR
;
1171 if (edit
->curs1
< edit
->start_display
) {
1172 edit
->start_display
--;
1182 edit_backspace (WEdit
* edit
, const int byte_delete
)
1191 edit
->mark1
-= (edit
->mark1
>= edit
->curs1
);
1192 edit
->mark2
-= (edit
->mark2
>= edit
->curs1
);
1193 edit
->last_get_rule
-= (edit
->last_get_rule
>= edit
->curs1
);
1196 if ( edit
->utf8
&& byte_delete
== 0 ) {
1197 edit_get_prev_utf (edit
, edit
->curs1
, &cw
);
1201 for ( i
= 1; i
<= cw
; i
++ ) {
1202 p
= *(edit
->buffers1
[(edit
->curs1
- 1) >> S_EDIT_BUF_SIZE
] + ((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
));
1203 if (!((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
)) {
1204 g_free (edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
]);
1205 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = NULL
;
1209 edit_push_action (edit
, p
);
1211 edit_modification (edit
);
1213 if (edit
->book_mark
)
1214 book_mark_dec (edit
, edit
->curs_line
);
1216 edit
->total_lines
--;
1217 edit
->force
|= REDRAW_AFTER_CURSOR
;
1220 if (edit
->curs1
< edit
->start_display
) {
1221 edit
->start_display
--;
1229 #ifdef FAST_MOVE_CURSOR
1231 static void memqcpy (WEdit
* edit
, unsigned char *dest
, unsigned char *src
, int n
)
1234 while ((next
= (unsigned long) memccpy (dest
, src
, '\n', n
))) {
1236 next
-= (unsigned long) dest
;
1244 edit_move_backward_lots (WEdit
*edit
, long increment
)
1249 if (increment
> edit
->curs1
)
1250 increment
= edit
->curs1
;
1253 edit_push_action (edit
, CURS_RIGHT_LOTS
, increment
);
1255 t
= r
= EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
);
1258 s
= edit
->curs1
& M_EDIT_BUF_SIZE
;
1263 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
- r
,
1264 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] + s
- r
,
1269 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
-
1270 s
, edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
], s
);
1271 p
= edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
];
1272 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = 0;
1275 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
- r
,
1276 edit
->buffers1
[(edit
->curs1
>> S_EDIT_BUF_SIZE
) - 1] +
1277 EDIT_BUF_SIZE
- (r
- s
), r
- s
);
1282 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1284 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = p
;
1286 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] =
1287 g_malloc (EDIT_BUF_SIZE
);
1292 s
= edit
->curs1
& M_EDIT_BUF_SIZE
;
1302 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] +
1304 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] + s
- t
,
1308 p
= edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
];
1309 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = 0;
1312 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] +
1314 edit
->buffers1
[(edit
->curs1
>> S_EDIT_BUF_SIZE
) - 1] +
1315 EDIT_BUF_SIZE
- (r
- s
), r
- s
);
1320 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1322 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = p
;
1324 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] =
1325 g_malloc (EDIT_BUF_SIZE
);
1330 return edit_get_byte (edit
, edit
->curs1
);
1333 #endif /* ! FAST_MOVE_CURSOR */
1335 /* moves the cursor right or left: increment positive or negative respectively */
1336 void edit_cursor_move (WEdit
* edit
, long increment
)
1338 /* this is the same as a combination of two of the above routines, with only one push onto the undo stack */
1341 #ifdef FAST_MOVE_CURSOR
1342 if (increment
< -256) {
1343 edit
->force
|= REDRAW_PAGE
;
1344 edit_move_backward_lots (edit
, -increment
);
1347 #endif /* ! FAST_MOVE_CURSOR */
1349 if (increment
< 0) {
1350 for (; increment
< 0; increment
++) {
1354 edit_push_action (edit
, CURS_RIGHT
);
1356 c
= edit_get_byte (edit
, edit
->curs1
- 1);
1357 if (!((edit
->curs2
+ 1) & M_EDIT_BUF_SIZE
))
1358 edit
->buffers2
[(edit
->curs2
+ 1) >> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1359 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
) - 1] = c
;
1361 c
= edit
->buffers1
[(edit
->curs1
- 1) >> S_EDIT_BUF_SIZE
][(edit
->curs1
- 1) & M_EDIT_BUF_SIZE
];
1362 if (!((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
)) {
1363 g_free (edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
]);
1364 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = NULL
;
1369 edit
->force
|= REDRAW_LINE_BELOW
;
1373 } else if (increment
> 0) {
1374 for (; increment
> 0; increment
--) {
1378 edit_push_action (edit
, CURS_LEFT
);
1380 c
= edit_get_byte (edit
, edit
->curs1
);
1381 if (!(edit
->curs1
& M_EDIT_BUF_SIZE
))
1382 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1383 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
][edit
->curs1
& M_EDIT_BUF_SIZE
] = c
;
1385 c
= edit
->buffers2
[(edit
->curs2
- 1) >> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- ((edit
->curs2
- 1) & M_EDIT_BUF_SIZE
) - 1];
1386 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1387 g_free (edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
]);
1388 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = 0;
1393 edit
->force
|= REDRAW_LINE_ABOVE
;
1399 /* These functions return positions relative to lines */
1401 /* returns index of last char on line + 1 */
1402 long edit_eol (WEdit
* edit
, long current
)
1404 if (current
< edit
->last_byte
) {
1406 if (edit_get_byte (edit
, current
) == '\n')
1409 return edit
->last_byte
;
1413 /* returns index of first char on line */
1414 long edit_bol (WEdit
* edit
, long current
)
1418 if (edit_get_byte (edit
, current
- 1) == '\n')
1426 int edit_count_lines (WEdit
* edit
, long current
, int upto
)
1429 if (upto
> edit
->last_byte
)
1430 upto
= edit
->last_byte
;
1433 while (current
< upto
)
1434 if (edit_get_byte (edit
, current
++) == '\n')
1440 /* If lines is zero this returns the count of lines from current to upto. */
1441 /* If upto is zero returns index of lines forward current. */
1442 long edit_move_forward (WEdit
* edit
, long current
, int lines
, long upto
)
1445 return edit_count_lines (edit
, current
, upto
);
1451 next
= edit_eol (edit
, current
) + 1;
1452 if (next
> edit
->last_byte
)
1462 /* Returns offset of 'lines' lines up from current */
1463 long edit_move_backward (WEdit
* edit
, long current
, int lines
)
1467 current
= edit_bol (edit
, current
);
1468 while((lines
--) && current
!= 0)
1469 current
= edit_bol (edit
, current
- 1);
1473 /* If cols is zero this returns the count of columns from current to upto. */
1474 /* If upto is zero returns index of cols across from current. */
1475 long edit_move_forward3 (WEdit
* edit
, long current
, int cols
, long upto
)
1487 q
= edit
->last_byte
+ 2;
1488 for (col
= 0, p
= current
; p
< q
; p
++) {
1501 if ( !edit
->utf8
) {
1503 c
= edit_get_byte (edit
, p
);
1507 c
= edit_get_byte (edit
, p
);
1508 utf_ch
= edit_get_utf (edit
, p
, &cw
);
1510 if ( utf8_display
) {
1511 if ( edit
->utf8
&& g_unichar_iswide(utf_ch
) )
1516 col
+= TAB_SIZE
- col
% TAB_SIZE
;
1517 else if (c
== '\n') {
1522 } else if (c
< 32 || c
== 127)
1523 col
+= 2; /* Caret notation for control characters */
1534 /* returns the current column position of the cursor */
1535 int edit_get_col (WEdit
* edit
)
1537 return edit_move_forward3 (edit
, edit_bol (edit
, edit
->curs1
), 0, edit
->curs1
);
1541 /* Scrolling functions */
1543 void edit_update_curs_row (WEdit
* edit
)
1545 edit
->curs_row
= edit
->curs_line
- edit
->start_line
;
1548 void edit_update_curs_col (WEdit
* edit
)
1550 edit
->curs_col
= edit_move_forward3(edit
, edit_bol(edit
, edit
->curs1
), 0, edit
->curs1
) + option_line_state_width
;
1554 edit_get_curs_col (const WEdit
*edit
)
1556 return edit
->curs_col
;
1559 /*moves the display start position up by i lines */
1560 void edit_scroll_upward (WEdit
* edit
, unsigned long i
)
1562 unsigned long lines_above
= edit
->start_line
;
1563 if (i
> lines_above
)
1566 edit
->start_line
-= i
;
1567 edit
->start_display
= edit_move_backward (edit
, edit
->start_display
, i
);
1568 edit
->force
|= REDRAW_PAGE
;
1569 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1571 edit_update_curs_row (edit
);
1575 /* returns 1 if could scroll, 0 otherwise */
1576 void edit_scroll_downward (WEdit
* edit
, int i
)
1579 lines_below
= edit
->total_lines
- edit
->start_line
- (edit
->num_widget_lines
- 1);
1580 if (lines_below
> 0) {
1581 if (i
> lines_below
)
1583 edit
->start_line
+= i
;
1584 edit
->start_display
= edit_move_forward (edit
, edit
->start_display
, i
, 0);
1585 edit
->force
|= REDRAW_PAGE
;
1586 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1588 edit_update_curs_row (edit
);
1591 void edit_scroll_right (WEdit
* edit
, int i
)
1593 edit
->force
|= REDRAW_PAGE
;
1594 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1595 edit
->start_col
-= i
;
1598 void edit_scroll_left (WEdit
* edit
, int i
)
1600 if (edit
->start_col
) {
1601 edit
->start_col
+= i
;
1602 if (edit
->start_col
> 0)
1603 edit
->start_col
= 0;
1604 edit
->force
|= REDRAW_PAGE
;
1605 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1609 /* high level cursor movement commands */
1611 static int is_in_indent (WEdit
*edit
)
1613 long p
= edit_bol (edit
, edit
->curs1
);
1614 while (p
< edit
->curs1
)
1615 if (!strchr (" \t", edit_get_byte (edit
, p
++)))
1620 static int left_of_four_spaces (WEdit
*edit
);
1623 edit_move_to_prev_col (WEdit
* edit
, long p
)
1625 int prev
= edit
->prev_col
;
1626 int over
= edit
->over_col
;
1628 edit_cursor_move (edit
, edit_move_forward3 (edit
, p
, prev
+ edit
->over_col
, 0) - edit
->curs1
);
1630 long line_len
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->curs1
), 0, edit_eol(edit
, edit
->curs1
));
1632 if (line_len
< prev
+ edit
->over_col
) {
1633 edit
->over_col
= prev
+ over
- line_len
;
1634 edit
->prev_col
= line_len
;
1635 edit
->curs_col
= line_len
;
1637 edit
->curs_col
= prev
+ over
;
1638 edit
->prev_col
= edit
->curs_col
;
1644 void edit_move_up (WEdit
* edit
, unsigned long i
, int scroll
)
1646 unsigned long p
, l
= edit
->curs_line
;
1652 edit
->force
|= REDRAW_PAGE
;
1654 edit_scroll_upward (edit
, i
);
1656 p
= edit_bol (edit
, edit
->curs1
);
1657 edit_cursor_move (edit
, (p
= edit_move_backward (edit
, p
, i
)) - edit
->curs1
);
1658 edit_move_to_prev_col (edit
, p
);
1660 edit
->search_start
= edit
->curs1
;
1661 edit
->found_len
= 0;
1666 is_blank (WEdit
*edit
, long offset
)
1670 s
= edit_bol (edit
, offset
);
1671 f
= edit_eol (edit
, offset
) - 1;
1673 c
= edit_get_byte (edit
, s
++);
1681 /* returns the offset of line i */
1683 edit_find_line (WEdit
*edit
, int line
)
1687 if (!edit
->caches_valid
) {
1688 for (i
= 0; i
< N_LINE_CACHES
; i
++)
1689 edit
->line_numbers
[i
] = edit
->line_offsets
[i
] = 0;
1690 /* three offsets that we *know* are line 0 at 0 and these two: */
1691 edit
->line_numbers
[1] = edit
->curs_line
;
1692 edit
->line_offsets
[1] = edit_bol (edit
, edit
->curs1
);
1693 edit
->line_numbers
[2] = edit
->total_lines
;
1694 edit
->line_offsets
[2] = edit_bol (edit
, edit
->last_byte
);
1695 edit
->caches_valid
= 1;
1697 if (line
>= edit
->total_lines
)
1698 return edit
->line_offsets
[2];
1701 /* find the closest known point */
1702 for (i
= 0; i
< N_LINE_CACHES
; i
++) {
1704 n
= abs (edit
->line_numbers
[i
] - line
);
1711 return edit
->line_offsets
[j
]; /* know the offset exactly */
1712 if (m
== 1 && j
>= 3)
1713 i
= j
; /* one line different - caller might be looping, so stay in this cache */
1715 i
= 3 + (rand () % (N_LINE_CACHES
- 3));
1716 if (line
> edit
->line_numbers
[j
])
1717 edit
->line_offsets
[i
] = edit_move_forward (edit
, edit
->line_offsets
[j
], line
- edit
->line_numbers
[j
], 0);
1719 edit
->line_offsets
[i
] = edit_move_backward (edit
, edit
->line_offsets
[j
], edit
->line_numbers
[j
] - line
);
1720 edit
->line_numbers
[i
] = line
;
1721 return edit
->line_offsets
[i
];
1724 int line_is_blank (WEdit
* edit
, long line
)
1726 return is_blank (edit
, edit_find_line (edit
, line
));
1729 /* moves up until a blank line is reached, or until just
1730 before a non-blank line is reached */
1731 static void edit_move_up_paragraph (WEdit
* edit
, int scroll
)
1734 if (edit
->curs_line
<= 1) {
1737 if (line_is_blank (edit
, edit
->curs_line
)) {
1738 if (line_is_blank (edit
, edit
->curs_line
- 1)) {
1739 for (i
= edit
->curs_line
- 1; i
; i
--)
1740 if (!line_is_blank (edit
, i
)) {
1745 for (i
= edit
->curs_line
- 1; i
; i
--)
1746 if (line_is_blank (edit
, i
))
1750 for (i
= edit
->curs_line
- 1; i
; i
--)
1751 if (line_is_blank (edit
, i
))
1755 edit_move_up (edit
, edit
->curs_line
- i
, scroll
);
1759 void edit_move_down (WEdit
* edit
, int i
, int scroll
)
1761 long p
, l
= edit
->total_lines
- edit
->curs_line
;
1767 edit
->force
|= REDRAW_PAGE
;
1769 edit_scroll_downward (edit
, i
);
1770 p
= edit_bol (edit
, edit
->curs1
);
1771 edit_cursor_move (edit
, (p
= edit_move_forward (edit
, p
, i
, 0)) - edit
->curs1
);
1772 edit_move_to_prev_col (edit
, p
);
1774 edit
->search_start
= edit
->curs1
;
1775 edit
->found_len
= 0;
1779 /* moves down until a blank line is reached, or until just
1780 before a non-blank line is reached */
1781 static void edit_move_down_paragraph (WEdit
* edit
, int scroll
)
1784 if (edit
->curs_line
>= edit
->total_lines
- 1) {
1785 i
= edit
->total_lines
;
1787 if (line_is_blank (edit
, edit
->curs_line
)) {
1788 if (line_is_blank (edit
, edit
->curs_line
+ 1)) {
1789 for (i
= edit
->curs_line
+ 1; i
; i
++)
1790 if (!line_is_blank (edit
, i
) || i
> edit
->total_lines
) {
1795 for (i
= edit
->curs_line
+ 1; i
; i
++)
1796 if (line_is_blank (edit
, i
) || i
>= edit
->total_lines
)
1800 for (i
= edit
->curs_line
+ 1; i
; i
++)
1801 if (line_is_blank (edit
, i
) || i
>= edit
->total_lines
)
1805 edit_move_down (edit
, i
- edit
->curs_line
, scroll
);
1808 static void edit_begin_page (WEdit
*edit
)
1810 edit_update_curs_row (edit
);
1811 edit_move_up (edit
, edit
->curs_row
, 0);
1814 static void edit_end_page (WEdit
*edit
)
1816 edit_update_curs_row (edit
);
1817 edit_move_down (edit
, edit
->num_widget_lines
- edit
->curs_row
- 1, 0);
1821 /* goto beginning of text */
1822 static void edit_move_to_top (WEdit
* edit
)
1824 if (edit
->curs_line
) {
1825 edit_cursor_move (edit
, -edit
->curs1
);
1826 edit_move_to_prev_col (edit
, 0);
1827 edit
->force
|= REDRAW_PAGE
;
1828 edit
->search_start
= 0;
1829 edit_update_curs_row(edit
);
1834 /* goto end of text */
1835 static void edit_move_to_bottom (WEdit
* edit
)
1837 if (edit
->curs_line
< edit
->total_lines
) {
1838 edit_cursor_move (edit
, edit
->curs2
);
1839 edit
->start_display
= edit
->last_byte
;
1840 edit
->start_line
= edit
->total_lines
;
1841 edit_update_curs_row(edit
);
1842 edit_scroll_upward (edit
, edit
->num_widget_lines
- 1);
1843 edit
->force
|= REDRAW_PAGE
;
1847 /* goto beginning of line */
1848 static void edit_cursor_to_bol (WEdit
* edit
)
1850 edit_cursor_move (edit
, edit_bol (edit
, edit
->curs1
) - edit
->curs1
);
1851 edit
->search_start
= edit
->curs1
;
1852 edit
->prev_col
= edit_get_col (edit
);
1856 /* goto end of line */
1857 static void edit_cursor_to_eol (WEdit
* edit
)
1859 edit_cursor_move (edit
, edit_eol (edit
, edit
->curs1
) - edit
->curs1
);
1860 edit
->search_start
= edit
->curs1
;
1861 edit
->prev_col
= edit_get_col (edit
);
1865 /* move cursor to line 'line' */
1866 void edit_move_to_line (WEdit
* e
, long line
)
1868 if(line
< e
->curs_line
)
1869 edit_move_up (e
, e
->curs_line
- line
, 0);
1871 edit_move_down (e
, line
- e
->curs_line
, 0);
1872 edit_scroll_screen_over_cursor (e
);
1875 /* scroll window so that first visible line is 'line' */
1876 void edit_move_display (WEdit
* e
, long line
)
1878 if(line
< e
->start_line
)
1879 edit_scroll_upward (e
, e
->start_line
- line
);
1881 edit_scroll_downward (e
, line
- e
->start_line
);
1884 /* save markers onto undo stack */
1885 void edit_push_markers (WEdit
* edit
)
1887 edit_push_action (edit
, MARK_1
+ edit
->mark1
);
1888 edit_push_action (edit
, MARK_2
+ edit
->mark2
);
1891 void edit_set_markers (WEdit
* edit
, long m1
, long m2
, int c1
, int c2
)
1900 /* highlight marker toggle */
1901 void edit_mark_cmd (WEdit
* edit
, int unmark
)
1903 edit_push_markers (edit
);
1905 edit_set_markers (edit
, 0, 0, 0, 0);
1906 edit
->force
|= REDRAW_PAGE
;
1908 if (edit
->mark2
>= 0) {
1909 edit_set_markers (edit
, edit
->curs1
, -1, edit
->curs_col
+edit
->over_col
, edit
->curs_col
+edit
->over_col
);
1910 edit
->force
|= REDRAW_PAGE
;
1912 edit_set_markers (edit
, edit
->mark1
, edit
->curs1
, edit
->column1
, edit
->curs_col
+edit
->over_col
);
1916 static unsigned long
1921 const char option_chars_move_whole_word
[] =
1922 "!=&|<>^~ !:;, !'!`!.?!\"!( !) !Aa0 !+-*/= |<> ![ !] !\\#! ";
1927 if (*option_chars_move_whole_word
== '!')
1929 return 0x80000000UL
;
1931 if (g_ascii_isupper ((gchar
) c
))
1933 else if (g_ascii_islower ((gchar
) c
))
1935 else if (g_ascii_isalpha (c
))
1937 else if (isdigit (c
))
1939 else if (isspace (c
))
1941 q
= strchr (option_chars_move_whole_word
, c
);
1943 return 0xFFFFFFFFUL
;
1945 for (x
= 1, p
= option_chars_move_whole_word
; p
< q
; p
++)
1949 } while ((q
= strchr (q
+ 1, c
)));
1954 edit_left_word_move (WEdit
*edit
, int s
)
1958 edit_cursor_move (edit
, -1);
1961 c1
= edit_get_byte (edit
, edit
->curs1
- 1);
1962 c2
= edit_get_byte (edit
, edit
->curs1
);
1963 if (!(my_type_of (c1
) & my_type_of (c2
)))
1965 if (isspace (c1
) && !isspace (c2
))
1968 if (!isspace (c1
) && isspace (c2
))
1973 static void edit_left_word_move_cmd (WEdit
* edit
)
1975 edit_left_word_move (edit
, 0);
1976 edit
->force
|= REDRAW_PAGE
;
1980 edit_right_word_move (WEdit
*edit
, int s
)
1984 edit_cursor_move (edit
, 1);
1985 if (edit
->curs1
>= edit
->last_byte
)
1987 c1
= edit_get_byte (edit
, edit
->curs1
- 1);
1988 c2
= edit_get_byte (edit
, edit
->curs1
);
1989 if (!(my_type_of (c1
) & my_type_of (c2
)))
1991 if (isspace (c1
) && !isspace (c2
))
1994 if (!isspace (c1
) && isspace (c2
))
1999 static void edit_right_word_move_cmd (WEdit
* edit
)
2001 edit_right_word_move (edit
, 0);
2002 edit
->force
|= REDRAW_PAGE
;
2005 static void edit_right_char_move_cmd (WEdit
* edit
)
2010 c
= edit_get_utf (edit
, edit
->curs1
, &cw
);
2014 c
= edit_get_byte (edit
, edit
->curs1
);
2019 edit_cursor_move (edit
, cw
);
2023 static void edit_left_char_move_cmd (WEdit
* edit
)
2027 edit_get_prev_utf (edit
, edit
->curs1
, &cw
);
2031 if (edit
->over_col
> 0) {
2034 edit_cursor_move (edit
, -cw
);
2039 static void edit_right_delete_word (WEdit
* edit
)
2043 if (edit
->curs1
>= edit
->last_byte
)
2045 c1
= edit_delete (edit
, 1);
2046 c2
= edit_get_byte (edit
, edit
->curs1
);
2047 if ((isspace (c1
) == 0) != (isspace (c2
) == 0))
2049 if (!(my_type_of (c1
) & my_type_of (c2
)))
2054 static void edit_left_delete_word (WEdit
* edit
)
2058 if (edit
->curs1
<= 0)
2060 c1
= edit_backspace (edit
, 1);
2061 c2
= edit_get_byte (edit
, edit
->curs1
- 1);
2062 if ((isspace (c1
) == 0) != (isspace (c2
) == 0))
2064 if (!(my_type_of (c1
) & my_type_of (c2
)))
2070 the start column position is not recorded, and hence does not
2071 undo as it happed. But who would notice.
2074 edit_do_undo (WEdit
* edit
)
2079 edit
->stack_disable
= 1; /* don't record undo's onto undo stack! */
2081 while ((ac
= pop_action (edit
)) < KEY_PRESS
) {
2086 edit_cursor_move (edit
, 1);
2089 edit_cursor_move (edit
, -1);
2092 edit_backspace (edit
, 1);
2095 edit_delete (edit
, 1);
2098 column_highlighting
= 1;
2101 column_highlighting
= 0;
2104 if (ac
>= 256 && ac
< 512)
2105 edit_insert_ahead (edit
, ac
- 256);
2106 if (ac
>= 0 && ac
< 256)
2107 edit_insert (edit
, ac
);
2109 if (ac
>= MARK_1
- 2 && ac
< MARK_2
- 2) {
2110 edit
->mark1
= ac
- MARK_1
;
2111 edit
->column1
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->mark1
), 0, edit
->mark1
);
2112 } else if (ac
>= MARK_2
- 2 && ac
< KEY_PRESS
) {
2113 edit
->mark2
= ac
- MARK_2
;
2114 edit
->column2
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->mark2
), 0, edit
->mark2
);
2117 edit
->force
|= REDRAW_PAGE
; /* more than one pop usually means something big */
2120 if (edit
->start_display
> ac
- KEY_PRESS
) {
2121 edit
->start_line
-= edit_count_lines (edit
, ac
- KEY_PRESS
, edit
->start_display
);
2122 edit
->force
|= REDRAW_PAGE
;
2123 } else if (edit
->start_display
< ac
- KEY_PRESS
) {
2124 edit
->start_line
+= edit_count_lines (edit
, edit
->start_display
, ac
- KEY_PRESS
);
2125 edit
->force
|= REDRAW_PAGE
;
2127 edit
->start_display
= ac
- KEY_PRESS
; /* see push and pop above */
2128 edit_update_curs_row (edit
);
2131 edit
->stack_disable
= 0;
2134 static void edit_delete_to_line_end (WEdit
* edit
)
2136 while (edit_get_byte (edit
, edit
->curs1
) != '\n') {
2139 edit_delete (edit
, 1);
2143 static void edit_delete_to_line_begin (WEdit
* edit
)
2145 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n') {
2148 edit_backspace (edit
, 1);
2153 edit_delete_line (WEdit
*edit
)
2156 * Delete right part of the line.
2157 * Note that edit_get_byte() returns '\n' when byte position is
2160 while (edit_get_byte (edit
, edit
->curs1
) != '\n') {
2161 (void) edit_delete (edit
, 1);
2166 * Note that edit_delete() will not corrupt anything if called while
2167 * cursor position is EOF.
2169 (void) edit_delete (edit
, 1);
2172 * Delete left part of the line.
2173 * Note, that edit_get_byte() returns '\n' when byte position is < 0.
2175 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n') {
2176 (void) edit_backspace (edit
, 1);
2180 void insert_spaces_tab (WEdit
* edit
, int half
)
2183 edit_update_curs_col (edit
);
2184 i
= ((edit
->curs_col
/ (option_tab_spacing
* space_width
/ (half
+ 1))) + 1) * (option_tab_spacing
* space_width
/ (half
+ 1)) - edit
->curs_col
;
2186 edit_insert (edit
, ' ');
2191 static int is_aligned_on_a_tab (WEdit
* edit
)
2193 edit_update_curs_col (edit
);
2194 if ((edit
->curs_col
% (TAB_SIZE
* space_width
)) && edit
->curs_col
% (TAB_SIZE
* space_width
) != (HALF_TAB_SIZE
* space_width
))
2195 return 0; /* not alligned on a tab */
2199 static int right_of_four_spaces (WEdit
*edit
)
2202 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2203 ch
|= edit_get_byte (edit
, edit
->curs1
- i
);
2205 return is_aligned_on_a_tab (edit
);
2209 static int left_of_four_spaces (WEdit
*edit
)
2212 for (i
= 0; i
< HALF_TAB_SIZE
; i
++)
2213 ch
|= edit_get_byte (edit
, edit
->curs1
+ i
);
2215 return is_aligned_on_a_tab (edit
);
2219 int edit_indent_width (WEdit
* edit
, long p
)
2222 while (strchr ("\t ", edit_get_byte (edit
, q
)) && q
< edit
->last_byte
- 1) /* move to the end of the leading whitespace of the line */
2224 return edit_move_forward3 (edit
, p
, 0, q
); /* count the number of columns of indentation */
2227 void edit_insert_indent (WEdit
* edit
, int indent
)
2229 if (!option_fill_tabs_with_spaces
) {
2230 while (indent
>= TAB_SIZE
) {
2231 edit_insert (edit
, '\t');
2235 while (indent
-- > 0)
2236 edit_insert (edit
, ' ');
2240 edit_auto_indent (WEdit
* edit
)
2245 /* use the previous line as a template */
2246 p
= edit_move_backward (edit
, p
, 1);
2247 /* copy the leading whitespace of the line */
2248 for (;;) { /* no range check - the line _is_ \n-terminated */
2249 c
= edit_get_byte (edit
, p
++);
2250 if (c
!= ' ' && c
!= '\t')
2252 edit_insert (edit
, c
);
2256 static void edit_double_newline (WEdit
* edit
)
2258 edit_insert (edit
, '\n');
2259 if (edit_get_byte (edit
, edit
->curs1
) == '\n')
2261 if (edit_get_byte (edit
, edit
->curs1
- 2) == '\n')
2263 edit
->force
|= REDRAW_PAGE
;
2264 edit_insert (edit
, '\n');
2267 static void edit_tab_cmd (WEdit
* edit
)
2271 if (option_fake_half_tabs
) {
2272 if (is_in_indent (edit
)) {
2273 /*insert a half tab (usually four spaces) unless there is a
2274 half tab already behind, then delete it and insert a
2276 if (!option_fill_tabs_with_spaces
&& right_of_four_spaces (edit
)) {
2277 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2278 edit_backspace (edit
, 1);
2279 edit_insert (edit
, '\t');
2281 insert_spaces_tab (edit
, 1);
2286 if (option_fill_tabs_with_spaces
) {
2287 insert_spaces_tab (edit
, 0);
2289 edit_insert (edit
, '\t');
2294 static void check_and_wrap_line (WEdit
* edit
)
2297 if (!option_typewriter_wrap
)
2299 edit_update_curs_col (edit
);
2300 if (edit
->curs_col
< option_word_wrap_line_length
)
2305 c
= edit_get_byte (edit
, curs
);
2306 if (c
== '\n' || curs
<= 0) {
2307 edit_insert (edit
, '\n');
2310 if (c
== ' ' || c
== '\t') {
2311 int current
= edit
->curs1
;
2312 edit_cursor_move (edit
, curs
- edit
->curs1
+ 1);
2313 edit_insert (edit
, '\n');
2314 edit_cursor_move (edit
, current
- edit
->curs1
+ 1);
2320 static void edit_execute_macro (WEdit
*edit
, struct macro macro
[], int n
);
2322 void edit_push_key_press (WEdit
* edit
)
2324 edit_push_action (edit
, KEY_PRESS
+ edit
->start_display
);
2325 if (edit
->mark2
== -1)
2326 edit_push_action (edit
, MARK_1
+ edit
->mark1
);
2329 /* this find the matching bracket in either direction, and sets edit->bracket */
2330 static long edit_get_bracket (WEdit
* edit
, int in_screen
, unsigned long furthest_bracket_search
)
2332 const char * const b
= "{}{[][()(", *p
;
2333 int i
= 1, a
, inc
= -1, c
, d
, n
= 0;
2334 unsigned long j
= 0;
2336 edit_update_curs_row (edit
);
2337 c
= edit_get_byte (edit
, edit
->curs1
);
2340 if (!furthest_bracket_search
)
2341 furthest_bracket_search
--;
2342 /* not on a bracket at all */
2345 /* the matching bracket */
2347 /* going left or right? */
2348 if (strchr ("{[(", c
))
2350 for (q
= edit
->curs1
+ inc
;; q
+= inc
) {
2351 /* out of buffer? */
2352 if (q
>= edit
->last_byte
|| q
< 0)
2354 a
= edit_get_byte (edit
, q
);
2355 /* don't want to eat CPU */
2356 if (j
++ > furthest_bracket_search
)
2358 /* out of screen? */
2360 if (q
< edit
->start_display
)
2362 /* count lines if searching downward */
2363 if (inc
> 0 && a
== '\n')
2364 if (n
++ >= edit
->num_widget_lines
- edit
->curs_row
) /* out of screen */
2367 /* count bracket depth */
2368 i
+= (a
== c
) - (a
== d
);
2369 /* return if bracket depth is zero */
2377 static long last_bracket
= -1;
2379 void edit_find_bracket (WEdit
* edit
)
2381 edit
->bracket
= edit_get_bracket (edit
, 1, 10000);
2382 if (last_bracket
!= edit
->bracket
)
2383 edit
->force
|= REDRAW_PAGE
;
2384 last_bracket
= edit
->bracket
;
2387 static void edit_goto_matching_bracket (WEdit
*edit
)
2390 q
= edit_get_bracket (edit
, 0, 0);
2393 edit
->bracket
= edit
->curs1
;
2394 edit
->force
|= REDRAW_PAGE
;
2395 edit_cursor_move (edit
, q
- edit
->curs1
);
2399 * This executes a command as though the user initiated it through a key
2400 * press. Callback with WIDGET_KEY as a message calls this after
2401 * translating the key press. This function can be used to pass any
2402 * command to the editor. Note that the screen wouldn't update
2403 * automatically. Either of command or char_for_insertion must be
2404 * passed as -1. Commands are executed, and char_for_insertion is
2405 * inserted at the cursor.
2407 void edit_execute_key_command (WEdit
*edit
, int command
, int char_for_insertion
)
2409 if (command
== CK_Begin_Record_Macro
) {
2411 edit
->force
|= REDRAW_CHAR_ONLY
| REDRAW_LINE
;
2414 if (command
== CK_End_Record_Macro
&& edit
->macro_i
!= -1) {
2415 edit
->force
|= REDRAW_COMPLETELY
;
2416 edit_save_macro_cmd (edit
, edit
->macro
, edit
->macro_i
);
2420 if (edit
->macro_i
>= 0 && edit
->macro_i
< MAX_MACRO_LENGTH
- 1) {
2421 edit
->macro
[edit
->macro_i
].command
= command
;
2422 edit
->macro
[edit
->macro_i
++].ch
= char_for_insertion
;
2424 /* record the beginning of a set of editing actions initiated by a key press */
2425 if (command
!= CK_Undo
&& command
!= CK_Ext_Mode
)
2426 edit_push_key_press (edit
);
2428 edit_execute_cmd (edit
, command
, char_for_insertion
);
2429 if (column_highlighting
)
2430 edit
->force
|= REDRAW_PAGE
;
2433 static const char * const shell_cmd
[] = SHELL_COMMANDS_i
;
2436 This executes a command at a lower level than macro recording.
2437 It also does not push a key_press onto the undo stack. This means
2438 that if it is called many times, a single undo command will undo
2439 all of them. It also does not check for the Undo command.
2442 edit_execute_cmd (WEdit
*edit
, int command
, int char_for_insertion
)
2444 edit
->force
|= REDRAW_LINE
;
2446 /* The next key press will unhighlight the found string, so update
2448 if (edit
->found_len
|| column_highlighting
)
2449 edit
->force
|= REDRAW_PAGE
;
2451 if (command
/ 100 == 6) { /* a highlight command like shift-arrow */
2452 column_highlighting
= 0;
2453 if (!edit
->highlight
2454 || (edit
->mark2
!= -1 && edit
->mark1
!= edit
->mark2
)) {
2455 edit_mark_cmd (edit
, 1); /* clear */
2456 edit_mark_cmd (edit
, 0); /* marking on */
2458 edit
->highlight
= 1;
2459 } else { /* any other command */
2460 if (edit
->highlight
)
2461 edit_mark_cmd (edit
, 0); /* clear */
2462 edit
->highlight
= 0;
2465 /* first check for undo */
2466 if (command
== CK_Undo
) {
2467 edit_do_undo (edit
);
2468 edit
->found_len
= 0;
2469 edit
->prev_col
= edit_get_col (edit
);
2470 edit
->search_start
= edit
->curs1
;
2474 /* An ordinary key press */
2475 if (char_for_insertion
>= 0) {
2476 if (edit
->overwrite
) {
2477 if (edit_get_byte (edit
, edit
->curs1
) != '\n')
2478 edit_delete (edit
, 0);
2480 if ( edit
->over_col
> 0 )
2481 edit_insert_over (edit
);
2483 if ( char_for_insertion
> 255 && utf8_display
== 0 ) {
2484 unsigned char str
[6 + 1];
2486 int res
= g_unichar_to_utf8 (char_for_insertion
, (char *)str
);
2493 while ( str
[i
] != 0 && i
<=6) {
2494 char_for_insertion
= str
[i
];
2495 edit_insert (edit
, char_for_insertion
);
2500 edit_insert (edit
, char_for_insertion
);
2504 if (option_auto_para_formatting
) {
2505 format_paragraph (edit
, 0);
2506 edit
->force
|= REDRAW_PAGE
;
2508 check_and_wrap_line (edit
);
2509 edit
->found_len
= 0;
2510 edit
->prev_col
= edit_get_col (edit
);
2511 edit
->search_start
= edit
->curs1
;
2512 edit_find_bracket (edit
);
2519 case CK_Begin_Page_Highlight
:
2520 case CK_End_Page_Highlight
:
2527 if ( edit
->mark2
>= 0 ) {
2528 if ( !option_persistent_selections
) {
2529 if (column_highlighting
)
2530 edit_push_action (edit
, COLUMN_ON
);
2531 column_highlighting
= 0;
2532 edit_mark_cmd (edit
, 1);
2540 case CK_Begin_Page_Highlight
:
2541 case CK_End_Page_Highlight
:
2546 case CK_Word_Left_Highlight
:
2547 case CK_Word_Right_Highlight
:
2548 case CK_Up_Highlight
:
2549 case CK_Down_Highlight
:
2550 case CK_Up_Alt_Highlight
:
2551 case CK_Down_Alt_Highlight
:
2552 if (edit
->mark2
== -1)
2553 break; /*marking is following the cursor: may need to highlight a whole line */
2556 case CK_Left_Highlight
:
2557 case CK_Right_Highlight
:
2558 edit
->force
|= REDRAW_CHAR_ONLY
;
2561 /* basic cursor key commands */
2564 /* if non persistent selection and text selected */
2565 if ( !option_persistent_selections
) {
2566 if ( edit
->mark1
!= edit
->mark2
) {
2567 edit_block_delete_cmd (edit
);
2571 if ( edit
->over_col
> 0 ) {
2575 if (option_backspace_through_tabs
&& is_in_indent (edit
)) {
2576 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n'
2578 edit_backspace (edit
, 1);
2581 if (option_fake_half_tabs
) {
2583 if (is_in_indent (edit
) && right_of_four_spaces (edit
)) {
2584 for (i
= 0; i
< HALF_TAB_SIZE
; i
++)
2585 edit_backspace (edit
, 1);
2590 edit_backspace (edit
, 0);
2593 /* if non persistent selection and text selected */
2594 if ( !option_persistent_selections
) {
2595 if ( edit
->mark1
!= edit
->mark2
) {
2596 edit_block_delete_cmd (edit
);
2601 if ( edit
->over_col
> 0 )
2602 edit_insert_over (edit
);
2604 if (option_fake_half_tabs
) {
2606 if (is_in_indent (edit
) && left_of_four_spaces (edit
)) {
2607 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2608 edit_delete (edit
, 1);
2612 edit_delete (edit
, 0);
2614 case CK_Delete_Word_Left
:
2615 edit_left_delete_word (edit
);
2617 case CK_Delete_Word_Right
:
2618 edit_right_delete_word (edit
);
2620 case CK_Delete_Line
:
2621 edit_delete_line (edit
);
2623 case CK_Delete_To_Line_End
:
2624 edit_delete_to_line_end (edit
);
2626 case CK_Delete_To_Line_Begin
:
2627 edit_delete_to_line_begin (edit
);
2630 if (option_auto_para_formatting
) {
2631 edit_double_newline (edit
);
2632 if (option_return_does_auto_indent
)
2633 edit_auto_indent (edit
);
2634 format_paragraph (edit
, 0);
2636 edit_insert (edit
, '\n');
2637 if (option_return_does_auto_indent
) {
2638 edit_auto_indent (edit
);
2643 edit_insert (edit
, '\n');
2646 case CK_Page_Up_Alt_Highlight
:
2647 column_highlighting
= 1;
2649 case CK_Page_Up_Highlight
:
2650 edit_move_up (edit
, edit
->num_widget_lines
- 1, 1);
2652 case CK_Page_Down_Alt_Highlight
:
2653 column_highlighting
= 1;
2655 case CK_Page_Down_Highlight
:
2656 edit_move_down (edit
, edit
->num_widget_lines
- 1, 1);
2658 case CK_Left_Alt_Highlight
:
2659 column_highlighting
= 1;
2661 case CK_Left_Highlight
:
2662 if (option_fake_half_tabs
) {
2663 if (is_in_indent (edit
) && right_of_four_spaces (edit
)) {
2664 if ( edit
->over_col
> 0)
2667 edit_cursor_move (edit
, -HALF_TAB_SIZE
);
2668 edit
->force
&= (0xFFF - REDRAW_CHAR_ONLY
);
2672 edit_left_char_move_cmd (edit
);
2674 case CK_Right_Alt_Highlight
:
2675 column_highlighting
= 1;
2677 case CK_Right_Highlight
:
2678 if (option_fake_half_tabs
) {
2679 if (is_in_indent (edit
) && left_of_four_spaces (edit
)) {
2680 edit_cursor_move (edit
, HALF_TAB_SIZE
);
2681 edit
->force
&= (0xFFF - REDRAW_CHAR_ONLY
);
2685 edit_right_char_move_cmd (edit
);
2688 case CK_Begin_Page_Highlight
:
2689 edit_begin_page (edit
);
2692 case CK_End_Page_Highlight
:
2693 edit_end_page (edit
);
2696 case CK_Word_Left_Highlight
:
2697 edit_left_word_move_cmd (edit
);
2700 case CK_Word_Right_Highlight
:
2701 edit_right_word_move_cmd (edit
);
2703 case CK_Up_Alt_Highlight
:
2704 column_highlighting
= 1;
2706 case CK_Up_Highlight
:
2707 edit_move_up (edit
, 1, 0);
2709 case CK_Down_Alt_Highlight
:
2710 column_highlighting
= 1;
2712 case CK_Down_Highlight
:
2713 edit_move_down (edit
, 1, 0);
2715 case CK_Paragraph_Up_Alt_Highlight
:
2716 column_highlighting
= 1;
2717 case CK_Paragraph_Up
:
2718 case CK_Paragraph_Up_Highlight
:
2719 edit_move_up_paragraph (edit
, 0);
2721 case CK_Paragraph_Down_Alt_Highlight
:
2722 column_highlighting
= 1;
2723 case CK_Paragraph_Down
:
2724 case CK_Paragraph_Down_Highlight
:
2725 edit_move_down_paragraph (edit
, 0);
2727 case CK_Scroll_Up_Alt_Highlight
:
2728 column_highlighting
= 1;
2730 case CK_Scroll_Up_Highlight
:
2731 edit_move_up (edit
, 1, 1);
2733 case CK_Scroll_Down_Alt_Highlight
:
2734 column_highlighting
= 1;
2735 case CK_Scroll_Down
:
2736 case CK_Scroll_Down_Highlight
:
2737 edit_move_down (edit
, 1, 1);
2740 case CK_Home_Highlight
:
2741 edit_cursor_to_bol (edit
);
2744 case CK_End_Highlight
:
2745 edit_cursor_to_eol (edit
);
2748 /* if text marked shift block */
2749 if ( edit
->mark1
!= edit
->mark2
&& !option_persistent_selections
) {
2750 edit_move_block_to_right (edit
);
2752 edit_insert_over (edit
);
2753 edit_tab_cmd (edit
);
2754 if (option_auto_para_formatting
) {
2755 format_paragraph (edit
, 0);
2756 edit
->force
|= REDRAW_PAGE
;
2758 check_and_wrap_line (edit
);
2763 case CK_Toggle_Insert
:
2764 edit
->overwrite
= (edit
->overwrite
== 0);
2768 if (edit
->mark2
>= 0) {
2769 if (column_highlighting
)
2770 edit_push_action (edit
, COLUMN_ON
);
2771 column_highlighting
= 0;
2773 edit_mark_cmd (edit
, 0);
2775 case CK_Column_Mark
:
2776 if (!column_highlighting
)
2777 edit_push_action (edit
, COLUMN_OFF
);
2778 column_highlighting
= 1;
2779 edit_mark_cmd (edit
, 0);
2782 if (column_highlighting
)
2783 edit_push_action (edit
, COLUMN_ON
);
2784 column_highlighting
= 0;
2785 edit_mark_cmd (edit
, 1);
2788 case CK_Toggle_Line_State
:
2789 option_line_state
= !option_line_state
;
2790 if ( option_line_state
) {
2791 option_line_state_width
= LINE_STATE_WIDTH
;
2793 option_line_state_width
= 0;
2795 edit
->force
|= REDRAW_PAGE
;
2798 case CK_Toggle_Bookmark
:
2799 book_mark_clear (edit
, edit
->curs_line
, BOOK_MARK_FOUND_COLOR
);
2800 if (book_mark_query_color (edit
, edit
->curs_line
, BOOK_MARK_COLOR
))
2801 book_mark_clear (edit
, edit
->curs_line
, BOOK_MARK_COLOR
);
2803 book_mark_insert (edit
, edit
->curs_line
, BOOK_MARK_COLOR
);
2805 case CK_Flush_Bookmarks
:
2806 book_mark_flush (edit
, BOOK_MARK_COLOR
);
2807 book_mark_flush (edit
, BOOK_MARK_FOUND_COLOR
);
2808 edit
->force
|= REDRAW_PAGE
;
2810 case CK_Next_Bookmark
:
2811 if (edit
->book_mark
) {
2812 struct _book_mark
*p
;
2813 p
= (struct _book_mark
*) book_mark_find (edit
,
2817 if (p
->line
>= edit
->start_line
+ edit
->num_widget_lines
2818 || p
->line
< edit
->start_line
)
2819 edit_move_display (edit
,
2821 edit
->num_widget_lines
/ 2);
2822 edit_move_to_line (edit
, p
->line
);
2826 case CK_Prev_Bookmark
:
2827 if (edit
->book_mark
) {
2828 struct _book_mark
*p
;
2829 p
= (struct _book_mark
*) book_mark_find (edit
,
2831 while (p
->line
== edit
->curs_line
)
2835 if (p
->line
>= edit
->start_line
+ edit
->num_widget_lines
2836 || p
->line
< edit
->start_line
)
2837 edit_move_display (edit
,
2839 edit
->num_widget_lines
/ 2);
2840 edit_move_to_line (edit
, p
->line
);
2845 case CK_Beginning_Of_Text
:
2846 case CK_Beginning_Of_Text_Highlight
:
2847 edit_move_to_top (edit
);
2849 case CK_End_Of_Text
:
2850 case CK_End_Of_Text_Highlight
:
2851 edit_move_to_bottom (edit
);
2855 edit_block_copy_cmd (edit
);
2858 edit_block_delete_cmd (edit
);
2861 edit_block_move_cmd (edit
);
2865 edit_copy_to_X_buf_cmd (edit
);
2868 edit_cut_to_X_buf_cmd (edit
);
2871 if ( edit
->over_col
> 0 )
2872 edit_insert_over (edit
);
2873 edit_paste_from_X_buf_cmd (edit
);
2875 case CK_Selection_History
:
2876 edit_paste_from_history (edit
);
2880 edit_save_as_cmd (edit
);
2883 edit_save_confirm_cmd (edit
);
2886 edit_load_cmd (edit
, EDIT_FILE_COMMON
);
2889 edit_save_block_cmd (edit
);
2891 case CK_Insert_File
:
2892 edit_insert_file_cmd (edit
);
2895 case CK_Load_Prev_File
:
2896 edit_load_back_cmd (edit
);
2898 case CK_Load_Next_File
:
2899 edit_load_forward_cmd (edit
);
2902 case CK_Load_Syntax_File
:
2903 edit_load_cmd (edit
, EDIT_FILE_SYNTAX
);
2905 case CK_Load_Menu_File
:
2906 edit_load_cmd (edit
, EDIT_FILE_MENU
);
2909 case CK_Toggle_Syntax
:
2910 if ((option_syntax_highlighting
^= 1) == 1)
2911 edit_load_syntax (edit
, NULL
, option_syntax_type
);
2912 edit
->force
|= REDRAW_PAGE
;
2915 case CK_Toggle_Tab_TWS
:
2916 enable_show_tabs_tws
^= 1;
2917 edit
->force
|= REDRAW_PAGE
;
2921 edit_search_cmd (edit
, 0);
2924 edit_search_cmd (edit
, 1);
2927 edit_replace_cmd (edit
, 0);
2929 case CK_Replace_Again
:
2930 edit_replace_cmd (edit
, 1);
2932 case CK_Complete_Word
:
2933 /* if text marked shift block */
2934 if ( edit
->mark1
!= edit
->mark2
&& !option_persistent_selections
) {
2935 edit_move_block_to_left (edit
);
2937 edit_complete_word_cmd (edit
);
2940 case CK_Find_Definition
:
2941 edit_get_match_keyword_cmd (edit
);
2945 dlg_stop (edit
->widget
.parent
);
2948 edit_new_cmd (edit
);
2952 edit_help_cmd (edit
);
2956 edit_refresh_cmd (edit
);
2961 /* fool gcc to prevent a Y2K warning */
2962 char time_format
[] = "_c";
2963 time_format
[0] = '%';
2965 FMT_LOCALTIME_CURRENT(s
, sizeof(s
), time_format
);
2966 edit_print_string (edit
, s
);
2967 edit
->force
|= REDRAW_PAGE
;
2971 edit_goto_cmd (edit
);
2973 case CK_Paragraph_Format
:
2974 format_paragraph (edit
, 1);
2975 edit
->force
|= REDRAW_PAGE
;
2977 case CK_Delete_Macro
:
2978 edit_delete_macro_cmd (edit
);
2980 case CK_Match_Bracket
:
2981 edit_goto_matching_bracket (edit
);
2987 edit_sort_cmd (edit
);
2990 edit_ext_cmd (edit
);
2993 edit_mail_dialog (edit
);
2998 case CK_Select_Codepage
:
2999 edit_select_codepage_cmd (edit
);
3001 case CK_Insert_Literal
:
3002 edit_insert_literal_cmd (edit
);
3004 case CK_Execute_Macro
:
3005 edit_execute_macro_cmd (edit
);
3007 case CK_Begin_End_Macro
:
3008 edit_begin_end_macro_cmd (edit
);
3018 if ((command
/ 1000) == 1) /* a shell command */
3019 edit_block_process_cmd (edit
, shell_cmd
[command
- 1000], 1);
3020 if (command
> CK_Macro (0) && command
<= CK_Last_Macro
) { /* a macro command */
3021 struct macro m
[MAX_MACRO_LENGTH
];
3023 if (edit_load_macro_cmd (edit
, m
, &nm
, command
- 2000))
3024 edit_execute_macro (edit
, m
, nm
);
3027 /* keys which must set the col position, and the search vars */
3032 case CK_Replace_Again
:
3033 case CK_Complete_Word
:
3034 edit
->prev_col
= edit_get_col (edit
);
3037 case CK_Up_Highlight
:
3038 case CK_Up_Alt_Highlight
:
3040 case CK_Down_Highlight
:
3041 case CK_Down_Alt_Highlight
:
3043 case CK_Page_Up_Highlight
:
3044 case CK_Page_Up_Alt_Highlight
:
3046 case CK_Page_Down_Highlight
:
3047 case CK_Page_Down_Alt_Highlight
:
3048 case CK_Beginning_Of_Text
:
3049 case CK_Beginning_Of_Text_Highlight
:
3050 case CK_End_Of_Text
:
3051 case CK_End_Of_Text_Highlight
:
3052 case CK_Paragraph_Up
:
3053 case CK_Paragraph_Up_Highlight
:
3054 case CK_Paragraph_Up_Alt_Highlight
:
3055 case CK_Paragraph_Down
:
3056 case CK_Paragraph_Down_Highlight
:
3057 case CK_Paragraph_Down_Alt_Highlight
:
3059 case CK_Scroll_Up_Highlight
:
3060 case CK_Scroll_Up_Alt_Highlight
:
3061 case CK_Scroll_Down
:
3062 case CK_Scroll_Down_Highlight
:
3063 case CK_Scroll_Down_Alt_Highlight
:
3064 edit
->search_start
= edit
->curs1
;
3065 edit
->found_len
= 0;
3068 edit
->found_len
= 0;
3069 edit
->prev_col
= edit_get_col (edit
);
3070 edit
->search_start
= edit
->curs1
;
3072 edit_find_bracket (edit
);
3074 if (option_auto_para_formatting
) {
3078 case CK_Delete_Word_Left
:
3079 case CK_Delete_Word_Right
:
3080 case CK_Delete_To_Line_End
:
3081 case CK_Delete_To_Line_Begin
:
3082 format_paragraph (edit
, 0);
3083 edit
->force
|= REDRAW_PAGE
;
3090 edit_execute_macro (WEdit
*edit
, struct macro macro
[], int n
)
3094 if (edit
->macro_depth
++ > 256) {
3095 edit_error_dialog (_("Error"), _("Macro recursion is too deep"));
3096 edit
->macro_depth
--;
3099 edit
->force
|= REDRAW_PAGE
;
3100 for (; i
< n
; i
++) {
3101 edit_execute_cmd (edit
, macro
[i
].command
, macro
[i
].ch
);
3103 edit_update_screen (edit
);
3104 edit
->macro_depth
--;
3107 /* User edit menu, like user menu (F2) but only in editor. */
3109 user_menu (WEdit
* edit
)
3114 long start_mark
, end_mark
;
3115 char *block_file
= concat_dir_and_file (home_dir
, EDIT_BLOCK_FILE
);
3118 nomark
= eval_marks (edit
, &start_mark
, &end_mark
);
3119 if (!nomark
) /* remember marked or not */
3120 edit_save_block (edit
, block_file
, start_mark
, end_mark
);
3122 /* run shell scripts from menu */
3123 user_menu_cmd (edit
);
3125 if (mc_stat (block_file
, &status
) != 0 || !status
.st_size
) {
3126 /* no block messages */
3131 /* i.e. we have marked block */
3132 rc
= edit_block_delete_cmd (edit
);
3136 edit_insert_file (edit
, block_file
);
3139 /* truncate block file */
3140 if ((fd
= fopen (block_file
, "w"))) {
3144 edit_refresh_cmd (edit
);
3145 edit
->force
|= REDRAW_COMPLETELY
;
3148 g_free (block_file
);
3152 edit_stack_init (void)
3154 for (edit_stack_iterator
= 0;
3155 edit_stack_iterator
< MAX_HISTORY_MOVETO
;
3156 edit_stack_iterator
++ ) {
3157 edit_history_moveto
[edit_stack_iterator
].filename
= NULL
;
3158 edit_history_moveto
[edit_stack_iterator
].line
= -1;
3161 edit_stack_iterator
= 0;
3165 edit_stack_free (void)
3167 for (edit_stack_iterator
= 0;
3168 edit_stack_iterator
< MAX_HISTORY_MOVETO
;
3169 edit_stack_iterator
++)
3170 g_free (edit_history_moveto
[edit_stack_iterator
].filename
);