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 "../src/cmddef.h"
49 #include "../src/tty/color.h" /* EDITOR_NORMAL_COLOR */
50 #include "../src/tty/tty.h" /* attrset() */
51 #include "../src/tty/key.h" /* is_idle() */
52 #include "../src/skin/skin.h" /* mc_skin_color_get */
54 #include "../src/widget.h"
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 */
62 #include "../src/learn.h" /* learn_keys */
64 int option_word_wrap_line_length
= 72;
65 int option_typewriter_wrap
= 0;
66 int option_auto_para_formatting
= 0;
67 int option_fill_tabs_with_spaces
= 0;
68 int option_return_does_auto_indent
= 1;
69 int option_backspace_through_tabs
= 0;
70 int option_fake_half_tabs
= 1;
71 int option_save_mode
= EDIT_QUICK_SAVE
;
72 int option_save_position
= 1;
73 int option_max_undo
= 32768;
74 int option_persistent_selections
= 1;
75 int option_cursor_beyond_eol
= 1;
76 int option_line_state
= 0;
77 int option_line_state_width
= 0;
79 int option_edit_right_extreme
= 0;
80 int option_edit_left_extreme
= 0;
81 int option_edit_top_extreme
= 0;
82 int option_edit_bottom_extreme
= 0;
83 int enable_show_tabs_tws
= 1;
84 int option_check_nl_at_eof
= 0;
86 const char *option_whole_chars_search
= "0123456789abcdefghijklmnopqrstuvwxyz_";
87 char *option_backup_ext
= NULL
;
89 int edit_stack_iterator
= 0;
90 edit_stack_type edit_history_moveto
[MAX_HISTORY_MOVETO
];
91 /* magic sequense for say than block is vertical */
92 const char VERTICAL_MAGIC
[] = {'\1', '\1', '\1', '\1', '\n'};
95 * here's a quick sketch of the layout: (don't run this through indent.)
97 * (b1 is buffers1 and b2 is buffers2)
100 * \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
101 * ______________________________________|______________________________________
103 * ... | b2[2] | b2[1] | b2[0] | b1[0] | b1[1] | b1[2] | ...
104 * |-> |-> |-> |-> |-> |-> |
106 * _<------------------------->|<----------------->_
107 * WEdit->curs2 | WEdit->curs1
112 * file end|||file beginning
121 const global_keymap_t
*editor_map
;
122 const global_keymap_t
*editor_x_map
;
124 static void user_menu (WEdit
*edit
);
126 int edit_get_byte (WEdit
* edit
, long byte_index
)
129 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0)
132 if (byte_index
>= edit
->curs1
) {
133 p
= edit
->curs1
+ edit
->curs2
- byte_index
- 1;
134 return edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1];
136 return edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
][byte_index
& M_EDIT_BUF_SIZE
];
140 char *edit_get_byte_ptr (WEdit
* edit
, long byte_index
)
144 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0)
147 if (byte_index
>= edit
->curs1
) {
148 p
= edit
->curs1
+ edit
->curs2
- byte_index
- 1;
149 return (char *) (edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
]+(EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1));
151 return (char *) (edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
]+(byte_index
& M_EDIT_BUF_SIZE
));
155 char *edit_get_buf_ptr (WEdit
* edit
, long byte_index
)
159 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) ) {
163 if ( byte_index
< 0 ) {
167 if (byte_index
>= edit
->curs1
) {
168 p
= edit
->curs1
+ edit
->curs2
- 1;
169 return (char *) (edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
] + (EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1));
171 return (char *) (edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
] + (0 & M_EDIT_BUF_SIZE
));
175 int edit_get_utf (WEdit
* edit
, long byte_index
, int *char_width
)
180 gchar
*next_ch
= NULL
;
183 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0) {
189 str
= edit_get_byte_ptr (edit
, byte_index
);
190 res
= g_utf8_get_char_validated (str
, -1);
197 /* Calculate UTF-8 char width */
198 next_ch
= g_utf8_next_char(str
);
200 width
= next_ch
- str
;
210 int edit_get_prev_utf (WEdit
* edit
, long byte_index
, int *char_width
)
212 gchar
*str
, *buf
= NULL
;
215 gchar
*next_ch
= NULL
;
218 if ( byte_index
> 0 ) {
222 ch
= edit_get_utf (edit
, byte_index
, &width
);
228 if ( byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0 ) {
233 str
= edit_get_byte_ptr (edit
, byte_index
);
234 buf
= edit_get_buf_ptr (edit
, byte_index
);
235 /* get prev utf8 char */
237 str
= g_utf8_find_prev_char (buf
, str
);
239 res
= g_utf8_get_char_validated (str
, -1);
245 /* Calculate UTF-8 char width */
246 next_ch
= g_utf8_next_char(str
);
248 width
= next_ch
- str
;
259 * Initialize the buffers for an empty files.
262 edit_init_buffers (WEdit
*edit
)
266 for (j
= 0; j
<= MAXBUFF
; j
++) {
267 edit
->buffers1
[j
] = NULL
;
268 edit
->buffers2
[j
] = NULL
;
273 edit
->buffers2
[0] = g_malloc (EDIT_BUF_SIZE
);
277 * Load file OR text into buffers. Set cursor to the beginning of file.
281 edit_load_file_fast (WEdit
*edit
, const char *filename
)
285 edit
->curs2
= edit
->last_byte
;
286 buf2
= edit
->curs2
>> S_EDIT_BUF_SIZE
;
288 if ((file
= mc_open (filename
, O_RDONLY
| O_BINARY
)) == -1) {
289 GString
*errmsg
= g_string_new(NULL
);
290 g_string_sprintf(errmsg
, _(" Cannot open %s for reading "), filename
);
291 edit_error_dialog (_("Error"), get_sys_error (errmsg
->str
));
292 g_string_free (errmsg
, TRUE
);
296 if (!edit
->buffers2
[buf2
])
297 edit
->buffers2
[buf2
] = g_malloc (EDIT_BUF_SIZE
);
300 (char *) edit
->buffers2
[buf2
] + EDIT_BUF_SIZE
-
301 (edit
->curs2
& M_EDIT_BUF_SIZE
),
302 edit
->curs2
& M_EDIT_BUF_SIZE
);
304 for (buf
= buf2
- 1; buf
>= 0; buf
--) {
305 /* edit->buffers2[0] is already allocated */
306 if (!edit
->buffers2
[buf
])
307 edit
->buffers2
[buf
] = g_malloc (EDIT_BUF_SIZE
);
308 mc_read (file
, (char *) edit
->buffers2
[buf
], EDIT_BUF_SIZE
);
315 /* detecting an error on save is easy: just check if every byte has been written. */
316 /* detecting an error on read, is not so easy 'cos there is not way to tell
317 whether you read everything or not. */
318 /* FIXME: add proper `triple_pipe_open' to read, write and check errors. */
319 static const struct edit_filters
{
320 const char *read
, *write
, *extension
;
322 { "xz -cd %s 2>&1", "xz > %s", ".xz" },
323 { "lzma -cd %s 2>&1", "lzma > %s", ".lzma" },
324 { "bzip2 -cd %s 2>&1", "bzip2 > %s", ".bz2" },
325 { "gzip -cd %s 2>&1", "gzip > %s", ".gz" },
326 { "gzip -cd %s 2>&1", "gzip > %s", ".Z" }
329 /* Return index of the filter or -1 is there is no appropriate filter */
330 static int edit_find_filter (const char *filename
)
335 l
= strlen (filename
);
336 for (i
= 0; i
< sizeof (all_filters
) / sizeof (all_filters
[0]); i
++) {
337 e
= strlen (all_filters
[i
].extension
);
339 if (!strcmp (all_filters
[i
].extension
, filename
+ l
- e
))
346 edit_get_filter (const char *filename
)
349 char *p
, *quoted_name
;
350 i
= edit_find_filter (filename
);
353 quoted_name
= name_quote (filename
, 0);
354 l
= str_term_width1 (quoted_name
);
355 p
= g_malloc (str_term_width1 (all_filters
[i
].read
) + l
+ 2);
356 sprintf (p
, all_filters
[i
].read
, quoted_name
);
357 g_free (quoted_name
);
362 edit_get_write_filter (const char *write_name
, const char *filename
)
366 i
= edit_find_filter (filename
);
369 writename
= name_quote (write_name
, 0);
370 l
= str_term_width1 (writename
);
371 p
= g_malloc (str_term_width1 (all_filters
[i
].write
) + l
+ 2);
372 sprintf (p
, all_filters
[i
].write
, writename
);
378 edit_insert_stream (WEdit
* edit
, FILE * f
)
382 while ((c
= fgetc (f
)) >= 0) {
383 edit_insert (edit
, c
);
389 long edit_write_stream (WEdit
* edit
, FILE * f
)
393 if (edit
->lb
== LB_ASIS
) {
394 for (i
= 0; i
< edit
->last_byte
; i
++)
395 if (fputc (edit_get_byte (edit
, i
), f
) < 0)
400 /* change line breaks */
401 for (i
= 0; i
< edit
->last_byte
; i
++) {
402 unsigned char c
= edit_get_byte (edit
, i
);
404 if (!(c
== '\n' || c
== '\r')) {
406 if (fputc (c
, f
) < 0)
408 } else { /* (c == '\n' || c == '\r') */
409 unsigned char c1
= edit_get_byte (edit
, i
+ 1); /* next char */
412 case LB_UNIX
: /* replace "\r\n" or '\r' to '\n' */
413 /* put one line break unconditionally */
414 if (fputc ('\n', f
) < 0)
417 i
++; /* 2 chars are processed */
419 if (c
== '\r' && c1
== '\n')
420 /* Windows line break; go to the next char */
423 if (c
== '\r' && c1
== '\r') {
424 /* two Macintosh line breaks; put second line break */
425 if (fputc ('\n', f
) < 0)
430 if (fputc (c1
, f
) < 0)
434 case LB_WIN
: /* replace '\n' or '\r' to "\r\n" */
435 /* put one line break unconditionally */
436 if (fputc ('\r', f
) < 0 || fputc ('\n', f
) < 0)
439 if (c
== '\r' && c1
== '\n')
440 /* Windows line break; go to the next char */
444 case LB_MAC
: /* replace "\r\n" or '\n' to '\r' */
445 /* put one line break unconditionally */
446 if (fputc ('\r', f
) < 0)
449 i
++; /* 2 chars are processed */
451 if (c
== '\r' && c1
== '\n')
452 /* Windows line break; go to the next char */
455 if (c
== '\n' && c1
== '\n') {
456 /* two Windows line breaks; put second line break */
457 if (fputc ('\r', f
) < 0)
462 if (fputc (c1
, f
) < 0)
465 case LB_ASIS
: /* default without changes */
471 return edit
->last_byte
;
474 #define TEMP_BUF_LEN 1024
476 /* inserts a file at the cursor, returns 1 on success */
478 edit_insert_file (WEdit
*edit
, const char *filename
)
481 if ((p
= edit_get_filter (filename
))) {
483 long current
= edit
->curs1
;
484 f
= (FILE *) popen (p
, "r");
486 edit_insert_stream (edit
, f
);
487 edit_cursor_move (edit
, current
- edit
->curs1
);
488 if (pclose (f
) > 0) {
489 GString
*errmsg
= g_string_new (NULL
);
490 g_string_sprintf (errmsg
, _(" Error reading from pipe: %s "), p
);
491 edit_error_dialog (_("Error"), errmsg
->str
);
492 g_string_free (errmsg
, TRUE
);
497 GString
*errmsg
= g_string_new (NULL
);
498 g_string_sprintf (errmsg
, _(" Cannot open pipe for reading: %s "), p
);
499 edit_error_dialog (_("Error"), errmsg
->str
);
500 g_string_free (errmsg
, TRUE
);
506 int i
, file
, blocklen
;
507 long current
= edit
->curs1
;
508 int vertical_insertion
= 0;
510 if ((file
= mc_open (filename
, O_RDONLY
| O_BINARY
)) == -1)
512 buf
= g_malloc (TEMP_BUF_LEN
);
513 blocklen
= mc_read (file
, buf
, sizeof(VERTICAL_MAGIC
));
515 /* if contain signature VERTICAL_MAGIC tnen it vertical block */
516 if ( memcmp(buf
, VERTICAL_MAGIC
, sizeof(VERTICAL_MAGIC
)) == 0 ) {
517 vertical_insertion
= 1;
519 mc_lseek (file
, 0, SEEK_SET
);
522 if (vertical_insertion
) {
523 blocklen
= edit_insert_column_of_text_from_file (edit
, file
);
525 while ((blocklen
= mc_read (file
, (char *) buf
, TEMP_BUF_LEN
)) > 0) {
526 for (i
= 0; i
< blocklen
; i
++)
527 edit_insert (edit
, buf
[i
]);
530 edit_cursor_move (edit
, current
- edit
->curs1
);
539 /* Open file and create it if necessary. Return 0 for success, 1 for error. */
541 check_file_access (WEdit
*edit
, const char *filename
, struct stat
*st
)
544 GString
*errmsg
= (GString
*) 0;
546 /* Try opening an existing file */
547 file
= mc_open (filename
, O_NONBLOCK
| O_RDONLY
| O_BINARY
, 0666);
551 * Try creating the file. O_EXCL prevents following broken links
552 * and opening existing files.
556 O_NONBLOCK
| O_RDONLY
| O_BINARY
| O_CREAT
| O_EXCL
,
559 g_string_sprintf (errmsg
= g_string_new (NULL
),
560 _(" Cannot open %s for reading "), filename
);
563 /* New file, delete it if it's not modified or saved */
564 edit
->delete_file
= 1;
568 /* Check what we have opened */
569 if (mc_fstat (file
, st
) < 0) {
570 g_string_sprintf (errmsg
= g_string_new (NULL
),
571 _(" Cannot get size/permissions for %s "), filename
);
575 /* We want to open regular files only */
576 if (!S_ISREG (st
->st_mode
)) {
577 g_string_sprintf (errmsg
= g_string_new (NULL
),
578 _(" %s is not a regular file "), filename
);
583 * Don't delete non-empty files.
584 * O_EXCL should prevent it, but let's be on the safe side.
586 if (st
->st_size
> 0) {
587 edit
->delete_file
= 0;
590 if (st
->st_size
>= SIZE_LIMIT
) {
591 g_string_sprintf (errmsg
= g_string_new (NULL
),
592 _(" File %s is too large "), filename
);
597 (void) mc_close (file
);
599 edit_error_dialog (_("Error"), errmsg
->str
);
600 g_string_free (errmsg
, TRUE
);
607 * Open the file and load it into the buffers, either directly or using
608 * a filter. Return 0 on success, 1 on error.
610 * Fast loading (edit_load_file_fast) is used when the file size is
611 * known. In this case the data is read into the buffers by blocks.
612 * If the file size is not known, the data is loaded byte by byte in
616 edit_load_file (WEdit
*edit
)
620 /* Cannot do fast load if a filter is used */
621 if (edit_find_filter (edit
->filename
) >= 0)
625 * VFS may report file size incorrectly, and slow load is not a big
626 * deal considering overhead in VFS.
628 if (!vfs_file_is_local (edit
->filename
))
632 * FIXME: line end translation should disable fast loading as well
633 * Consider doing fseek() to the end and ftell() for the real size.
636 if (*edit
->filename
) {
637 /* If we are dealing with a real file, check that it exists */
638 if (check_file_access (edit
, edit
->filename
, &edit
->stat1
))
641 /* nothing to load */
645 edit_init_buffers (edit
);
648 edit
->last_byte
= edit
->stat1
.st_size
;
649 edit_load_file_fast (edit
, edit
->filename
);
650 /* If fast load was used, the number of lines wasn't calculated */
651 edit
->total_lines
= edit_count_lines (edit
, 0, edit
->last_byte
);
654 const char *codepage_id
;
657 if (*edit
->filename
) {
658 edit
->stack_disable
= 1;
659 if (!edit_insert_file (edit
, edit
->filename
)) {
663 edit
->stack_disable
= 0;
667 codepage_id
= get_codepage_id( source_codepage
);
669 edit
->utf8
= str_isutf8 ( codepage_id
);
676 /* Restore saved cursor position in the file */
678 edit_load_position (WEdit
*edit
)
683 if (!edit
->filename
|| !*edit
->filename
)
686 filename
= vfs_canon (edit
->filename
);
687 load_file_position (filename
, &line
, &column
);
690 edit_move_to_line (edit
, line
- 1);
691 edit
->prev_col
= column
;
692 edit_move_to_prev_col (edit
, edit_bol (edit
, edit
->curs1
));
693 edit_move_display (edit
, line
- (edit
->num_widget_lines
/ 2));
696 /* Save cursor position in the file */
698 edit_save_position (WEdit
*edit
)
702 if (!edit
->filename
|| !*edit
->filename
)
705 filename
= vfs_canon (edit
->filename
);
706 save_file_position (filename
, edit
->curs_line
+ 1, edit
->curs_col
);
710 /* Clean the WEdit stricture except the widget part */
712 edit_purge_widget (WEdit
*edit
)
714 int len
= sizeof (WEdit
) - sizeof (Widget
);
715 char *start
= (char *) edit
+ sizeof (Widget
);
716 memset (start
, 0, len
);
717 edit
->macro_i
= -1; /* not recording a macro */
721 edit_set_keymap (void)
723 editor_map
= default_editor_keymap
;
724 if (editor_keymap
&& editor_keymap
->len
> 0)
725 editor_map
= (global_keymap_t
*) editor_keymap
->data
;
727 editor_x_map
= default_editor_x_keymap
;
728 if (editor_x_keymap
&& editor_x_keymap
->len
> 0)
729 editor_x_map
= (global_keymap_t
*) editor_x_keymap
->data
;
733 #define space_width 1
736 * Fill in the edit structure. Return NULL on failure. Pass edit as
737 * NULL to allocate a new structure.
739 * If line is 0, try to restore saved position. Otherwise put the
740 * cursor on that line and show it in the middle of the screen.
743 edit_init (WEdit
*edit
, int lines
, int columns
, const char *filename
,
747 option_auto_syntax
= 1; /* Resetting to auto on every invokation */
748 if ( option_line_state
) {
749 option_line_state_width
= LINE_STATE_WIDTH
;
751 option_line_state_width
= 0;
756 * Expand option_whole_chars_search by national letters using
760 static char option_whole_chars_search_buf
[256];
762 if (option_whole_chars_search_buf
!= option_whole_chars_search
) {
764 size_t len
= str_term_width1 (option_whole_chars_search
);
766 strcpy (option_whole_chars_search_buf
,
767 option_whole_chars_search
);
769 for (i
= 1; i
<= sizeof (option_whole_chars_search_buf
); i
++) {
770 if (g_ascii_islower ((gchar
) i
) && !strchr (option_whole_chars_search
, i
)) {
771 option_whole_chars_search_buf
[len
++] = i
;
775 option_whole_chars_search_buf
[len
] = 0;
776 option_whole_chars_search
= option_whole_chars_search_buf
;
778 #endif /* ENABLE_NLS */
779 edit
= g_malloc0 (sizeof (WEdit
));
783 edit_purge_widget (edit
);
784 edit
->num_widget_lines
= lines
;
786 edit
->num_widget_columns
= columns
;
787 edit
->stat1
.st_mode
= S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IROTH
;
788 edit
->stat1
.st_uid
= getuid ();
789 edit
->stat1
.st_gid
= getgid ();
790 edit
->stat1
.st_mtime
= 0;
792 edit
->force
|= REDRAW_PAGE
;
793 edit_set_filename (edit
, filename
);
794 edit
->stack_size
= START_STACK_SIZE
;
795 edit
->stack_size_mask
= START_STACK_SIZE
- 1;
796 edit
->undo_stack
= g_malloc ((edit
->stack_size
+ 10) * sizeof (long));
797 if (edit_load_file (edit
)) {
798 /* edit_load_file already gives an error message */
804 edit
->converter
= str_cnv_from_term
;
807 const char *cp_id
= NULL
;
808 cp_id
= get_codepage_id (source_codepage
>= 0 ?
809 source_codepage
: display_codepage
);
813 conv
= str_crt_conv_from (cp_id
);
814 if (conv
!= INVALID_CONV
) {
815 if (edit
->converter
!= str_cnv_from_term
)
816 str_close_conv (edit
->converter
);
817 edit
->converter
= conv
;
821 edit
->utf8
= str_isutf8 (cp_id
);
825 edit
->loading_done
= 1;
828 edit_load_syntax (edit
, 0, 0);
831 edit_get_syntax_color (edit
, -1, &color
);
834 /* load saved cursor position */
835 if ((line
== 0) && option_save_position
) {
836 edit_load_position (edit
);
840 edit_move_display (edit
, line
- 1);
841 edit_move_to_line (edit
, line
- 1);
849 /* Clear the edit struct, freeing everything in it. Return 1 on success */
851 edit_clean (WEdit
*edit
)
858 /* a stale lock, remove it */
860 edit
->locked
= edit_unlock_file (edit
->filename
);
862 /* save cursor position */
863 if (option_save_position
)
864 edit_save_position (edit
);
866 /* File specified on the mcedit command line and never saved */
867 if (edit
->delete_file
)
868 unlink (edit
->filename
);
870 edit_free_syntax_rules (edit
);
871 book_mark_flush (edit
, -1);
872 for (; j
<= MAXBUFF
; j
++) {
873 g_free (edit
->buffers1
[j
]);
874 g_free (edit
->buffers2
[j
]);
877 g_free (edit
->undo_stack
);
878 g_free (edit
->filename
);
883 mc_search_free(edit
->search
);
886 edit_purge_widget (edit
);
892 /* returns 1 on success */
893 int edit_renew (WEdit
* edit
)
895 int lines
= edit
->num_widget_lines
;
896 int columns
= edit
->num_widget_columns
;
900 if (!edit_init (edit
, lines
, columns
, "", 0))
906 * Load a new file into the editor. If it fails, preserve the old file.
907 * To do it, allocate a new widget, initialize it and, if the new file
908 * was loaded, copy the data to the old widget.
909 * Return 1 on success, 0 on failure.
912 edit_reload (WEdit
*edit
, const char *filename
)
915 int lines
= edit
->num_widget_lines
;
916 int columns
= edit
->num_widget_columns
;
918 e
= g_malloc0 (sizeof (WEdit
));
919 e
->widget
= edit
->widget
;
920 if (!edit_init (e
, lines
, columns
, filename
, 0)) {
925 memcpy (edit
, e
, sizeof (WEdit
));
931 * Load a new file into the editor and set line. If it fails, preserve the old file.
932 * To do it, allocate a new widget, initialize it and, if the new file
933 * was loaded, copy the data to the old widget.
934 * Return 1 on success, 0 on failure.
937 edit_reload_line (WEdit
*edit
, const char *filename
, long line
)
940 int lines
= edit
->num_widget_lines
;
941 int columns
= edit
->num_widget_columns
;
943 e
= g_malloc0 (sizeof (WEdit
));
944 e
->widget
= edit
->widget
;
945 if (!edit_init (e
, lines
, columns
, filename
, line
)) {
950 memcpy (edit
, e
, sizeof (WEdit
));
957 Recording stack for undo:
958 The following is an implementation of a compressed stack. Identical
959 pushes are recorded by a negative prefix indicating the number of times the
960 same char was pushed. This saves space for repeated curs-left or curs-right
977 If the stack long int is 0-255 it represents a normal insert (from a backspace),
978 256-512 is an insert ahead (from a delete), If it is betwen 600 and 700 it is one
979 of the cursor functions #define'd in edit-impl.h. 1000 through 700'000'000 is to
980 set edit->mark1 position. 700'000'000 through 1400'000'000 is to set edit->mark2
983 The only way the cursor moves or the buffer is changed is through the routines:
984 insert, backspace, insert_ahead, delete, and cursor_move.
985 These record the reverse undo movements onto the stack each time they are
988 Each key press results in a set of actions (insert; delete ...). So each time
989 a key is pressed the current position of start_display is pushed as
990 KEY_PRESS + start_display. Then for undoing, we pop until we get to a number
991 over KEY_PRESS. We then assign this number less KEY_PRESS to start_display. So undo
992 tracks scrolling and key actions exactly. (KEY_PRESS is about (2^31) * (2/3) = 1400'000'000)
996 void edit_push_action (WEdit
* edit
, long c
,...)
998 unsigned long sp
= edit
->stack_pointer
;
1002 /* first enlarge the stack if necessary */
1003 if (sp
> edit
->stack_size
- 10) { /* say */
1004 if (option_max_undo
< 256)
1005 option_max_undo
= 256;
1006 if (edit
->stack_size
< (unsigned long) option_max_undo
) {
1007 t
= g_realloc (edit
->undo_stack
, (edit
->stack_size
* 2 + 10) * sizeof (long));
1009 edit
->undo_stack
= t
;
1010 edit
->stack_size
<<= 1;
1011 edit
->stack_size_mask
= edit
->stack_size
- 1;
1015 spm1
= (edit
->stack_pointer
- 1) & edit
->stack_size_mask
;
1016 if (edit
->stack_disable
)
1019 #ifdef FAST_MOVE_CURSOR
1020 if (c
== CURS_LEFT_LOTS
|| c
== CURS_RIGHT_LOTS
) {
1022 edit
->undo_stack
[sp
] = c
== CURS_LEFT_LOTS
? CURS_LEFT
: CURS_RIGHT
;
1023 edit
->stack_pointer
= (edit
->stack_pointer
+ 1) & edit
->stack_size_mask
;
1025 c
= -(va_arg (ap
, int));
1028 #endif /* ! FAST_MOVE_CURSOR */
1029 if (edit
->stack_bottom
!= sp
1030 && spm1
!= edit
->stack_bottom
1031 && ((sp
- 2) & edit
->stack_size_mask
) != edit
->stack_bottom
) {
1033 if (edit
->undo_stack
[spm1
] < 0) {
1034 d
= edit
->undo_stack
[(sp
- 2) & edit
->stack_size_mask
];
1036 if (edit
->undo_stack
[spm1
] > -1000000000) {
1037 if (c
< KEY_PRESS
) /* --> no need to push multiple do-nothings */
1038 edit
->undo_stack
[spm1
]--;
1042 /* #define NO_STACK_CURSMOVE_ANIHILATION */
1043 #ifndef NO_STACK_CURSMOVE_ANIHILATION
1044 else if ((c
== CURS_LEFT
&& d
== CURS_RIGHT
)
1045 || (c
== CURS_RIGHT
&& d
== CURS_LEFT
)) { /* a left then a right anihilate each other */
1046 if (edit
->undo_stack
[spm1
] == -2)
1047 edit
->stack_pointer
= spm1
;
1049 edit
->undo_stack
[spm1
]++;
1054 d
= edit
->undo_stack
[spm1
];
1057 return; /* --> no need to push multiple do-nothings */
1058 edit
->undo_stack
[sp
] = -2;
1061 #ifndef NO_STACK_CURSMOVE_ANIHILATION
1062 else if ((c
== CURS_LEFT
&& d
== CURS_RIGHT
)
1063 || (c
== CURS_RIGHT
&& d
== CURS_LEFT
)) { /* a left then a right anihilate each other */
1064 edit
->stack_pointer
= spm1
;
1070 edit
->undo_stack
[sp
] = c
;
1073 edit
->stack_pointer
= (edit
->stack_pointer
+ 1) & edit
->stack_size_mask
;
1075 /* if the sp wraps round and catches the stack_bottom then erase
1076 * the first set of actions on the stack to make space - by moving
1077 * stack_bottom forward one "key press" */
1078 c
= (edit
->stack_pointer
+ 2) & edit
->stack_size_mask
;
1079 if ((unsigned long) c
== edit
->stack_bottom
||
1080 (((unsigned long) c
+ 1) & edit
->stack_size_mask
) == edit
->stack_bottom
)
1082 edit
->stack_bottom
= (edit
->stack_bottom
+ 1) & edit
->stack_size_mask
;
1083 } while (edit
->undo_stack
[edit
->stack_bottom
] < KEY_PRESS
&& edit
->stack_bottom
!= edit
->stack_pointer
);
1085 /*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: */
1086 if (edit
->stack_pointer
!= edit
->stack_bottom
&& edit
->undo_stack
[edit
->stack_bottom
] < KEY_PRESS
)
1087 edit
->stack_bottom
= edit
->stack_pointer
= 0;
1091 TODO: if the user undos until the stack bottom, and the stack has not wrapped,
1092 then the file should be as it was when he loaded up. Then set edit->modified to 0.
1095 pop_action (WEdit
* edit
)
1098 unsigned long sp
= edit
->stack_pointer
;
1099 if (sp
== edit
->stack_bottom
) {
1100 return STACK_BOTTOM
;
1102 sp
= (sp
- 1) & edit
->stack_size_mask
;
1103 if ((c
= edit
->undo_stack
[sp
]) >= 0) {
1104 /* edit->undo_stack[sp] = '@'; */
1105 edit
->stack_pointer
= (edit
->stack_pointer
- 1) & edit
->stack_size_mask
;
1108 if (sp
== edit
->stack_bottom
) {
1109 return STACK_BOTTOM
;
1111 c
= edit
->undo_stack
[(sp
- 1) & edit
->stack_size_mask
];
1112 if (edit
->undo_stack
[sp
] == -2) {
1113 /* edit->undo_stack[sp] = '@'; */
1114 edit
->stack_pointer
= sp
;
1116 edit
->undo_stack
[sp
]++;
1121 /* is called whenever a modification is made by one of the four routines below */
1122 static void edit_modification (WEdit
* edit
)
1124 edit
->caches_valid
= 0;
1125 edit
->screen_modified
= 1;
1127 /* raise lock when file modified */
1128 if (!edit
->modified
&& !edit
->delete_file
)
1129 edit
->locked
= edit_lock_file (edit
->filename
);
1134 Basic low level single character buffer alterations and movements at the cursor.
1135 Returns char passed over, inserted or removed.
1139 edit_insert (WEdit
*edit
, int c
)
1141 /* check if file has grown to large */
1142 if (edit
->last_byte
>= SIZE_LIMIT
)
1145 /* first we must update the position of the display window */
1146 if (edit
->curs1
< edit
->start_display
) {
1147 edit
->start_display
++;
1152 /* Mark file as modified, unless the file hasn't been fully loaded */
1153 if (edit
->loading_done
) {
1154 edit_modification (edit
);
1157 /* now we must update some info on the file and check if a redraw is required */
1159 if (edit
->book_mark
)
1160 book_mark_inc (edit
, edit
->curs_line
);
1162 edit
->total_lines
++;
1163 edit
->force
|= REDRAW_LINE_ABOVE
| REDRAW_AFTER_CURSOR
;
1166 /* save the reverse command onto the undo stack */
1167 edit_push_action (edit
, BACKSPACE
);
1169 /* update markers */
1170 edit
->mark1
+= (edit
->mark1
> edit
->curs1
);
1171 edit
->mark2
+= (edit
->mark2
> edit
->curs1
);
1172 edit
->last_get_rule
+= (edit
->last_get_rule
> edit
->curs1
);
1174 /* add a new buffer if we've reached the end of the last one */
1175 if (!(edit
->curs1
& M_EDIT_BUF_SIZE
))
1176 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] =
1177 g_malloc (EDIT_BUF_SIZE
);
1179 /* perform the insertion */
1180 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
][edit
->
1181 curs1
& M_EDIT_BUF_SIZE
]
1182 = (unsigned char) c
;
1184 /* update file length */
1187 /* update cursor position */
1192 edit_insert_over (WEdit
* edit
)
1196 for ( i
= 0; i
< edit
->over_col
; i
++ ) {
1197 edit_insert (edit
, ' ');
1202 /* same as edit_insert and move left */
1203 void edit_insert_ahead (WEdit
* edit
, int c
)
1205 if (edit
->last_byte
>= SIZE_LIMIT
)
1207 if (edit
->curs1
< edit
->start_display
) {
1208 edit
->start_display
++;
1212 edit_modification (edit
);
1214 if (edit
->book_mark
)
1215 book_mark_inc (edit
, edit
->curs_line
);
1216 edit
->total_lines
++;
1217 edit
->force
|= REDRAW_AFTER_CURSOR
;
1219 edit_push_action (edit
, DELCHAR
);
1221 edit
->mark1
+= (edit
->mark1
>= edit
->curs1
);
1222 edit
->mark2
+= (edit
->mark2
>= edit
->curs1
);
1223 edit
->last_get_rule
+= (edit
->last_get_rule
>= edit
->curs1
);
1225 if (!((edit
->curs2
+ 1) & M_EDIT_BUF_SIZE
))
1226 edit
->buffers2
[(edit
->curs2
+ 1) >> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1227 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
) - 1] = c
;
1234 int edit_delete (WEdit
* edit
, const int byte_delete
)
1243 edit
->mark1
-= (edit
->mark1
> edit
->curs1
);
1244 edit
->mark2
-= (edit
->mark2
> edit
->curs1
);
1245 edit
->last_get_rule
-= (edit
->last_get_rule
> edit
->curs1
);
1248 /* if byte_delete = 1 then delete only one byte not multibyte char*/
1249 if ( edit
->utf8
&& byte_delete
== 0 ) {
1250 edit_get_utf (edit
, edit
->curs1
, &cw
);
1254 for ( i
= 1; i
<= cw
; i
++ ) {
1255 p
= edit
->buffers2
[(edit
->curs2
- 1) >> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- ((edit
->curs2
- 1) & M_EDIT_BUF_SIZE
) - 1];
1257 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1258 g_free (edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
]);
1259 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = NULL
;
1263 edit_push_action (edit
, p
+ 256);
1266 edit_modification (edit
);
1268 if (edit
->book_mark
)
1269 book_mark_dec (edit
, edit
->curs_line
);
1270 edit
->total_lines
--;
1271 edit
->force
|= REDRAW_AFTER_CURSOR
;
1273 if (edit
->curs1
< edit
->start_display
) {
1274 edit
->start_display
--;
1284 edit_backspace (WEdit
* edit
, const int byte_delete
)
1293 edit
->mark1
-= (edit
->mark1
>= edit
->curs1
);
1294 edit
->mark2
-= (edit
->mark2
>= edit
->curs1
);
1295 edit
->last_get_rule
-= (edit
->last_get_rule
>= edit
->curs1
);
1298 if ( edit
->utf8
&& byte_delete
== 0 ) {
1299 edit_get_prev_utf (edit
, edit
->curs1
, &cw
);
1303 for ( i
= 1; i
<= cw
; i
++ ) {
1304 p
= *(edit
->buffers1
[(edit
->curs1
- 1) >> S_EDIT_BUF_SIZE
] + ((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
));
1305 if (!((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
)) {
1306 g_free (edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
]);
1307 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = NULL
;
1311 edit_push_action (edit
, p
);
1313 edit_modification (edit
);
1315 if (edit
->book_mark
)
1316 book_mark_dec (edit
, edit
->curs_line
);
1318 edit
->total_lines
--;
1319 edit
->force
|= REDRAW_AFTER_CURSOR
;
1322 if (edit
->curs1
< edit
->start_display
) {
1323 edit
->start_display
--;
1331 #ifdef FAST_MOVE_CURSOR
1333 static void memqcpy (WEdit
* edit
, unsigned char *dest
, unsigned char *src
, int n
)
1336 while ((next
= (unsigned long) memccpy (dest
, src
, '\n', n
))) {
1338 next
-= (unsigned long) dest
;
1346 edit_move_backward_lots (WEdit
*edit
, long increment
)
1351 if (increment
> edit
->curs1
)
1352 increment
= edit
->curs1
;
1355 edit_push_action (edit
, CURS_RIGHT_LOTS
, increment
);
1357 t
= r
= EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
);
1360 s
= edit
->curs1
& M_EDIT_BUF_SIZE
;
1365 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
- r
,
1366 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] + s
- r
,
1371 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
-
1372 s
, edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
], s
);
1373 p
= edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
];
1374 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = 0;
1377 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
- r
,
1378 edit
->buffers1
[(edit
->curs1
>> S_EDIT_BUF_SIZE
) - 1] +
1379 EDIT_BUF_SIZE
- (r
- s
), r
- s
);
1384 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1386 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = p
;
1388 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] =
1389 g_malloc (EDIT_BUF_SIZE
);
1394 s
= edit
->curs1
& M_EDIT_BUF_SIZE
;
1404 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] +
1406 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] + s
- t
,
1410 p
= edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
];
1411 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = 0;
1414 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] +
1416 edit
->buffers1
[(edit
->curs1
>> S_EDIT_BUF_SIZE
) - 1] +
1417 EDIT_BUF_SIZE
- (r
- s
), r
- s
);
1422 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1424 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = p
;
1426 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] =
1427 g_malloc (EDIT_BUF_SIZE
);
1432 return edit_get_byte (edit
, edit
->curs1
);
1435 #endif /* ! FAST_MOVE_CURSOR */
1437 /* moves the cursor right or left: increment positive or negative respectively */
1438 void edit_cursor_move (WEdit
* edit
, long increment
)
1440 /* this is the same as a combination of two of the above routines, with only one push onto the undo stack */
1442 #ifdef FAST_MOVE_CURSOR
1443 if (increment
< -256) {
1444 edit
->force
|= REDRAW_PAGE
;
1445 edit_move_backward_lots (edit
, -increment
);
1448 #endif /* ! FAST_MOVE_CURSOR */
1450 if (increment
< 0) {
1451 for (; increment
< 0; increment
++) {
1455 edit_push_action (edit
, CURS_RIGHT
);
1457 c
= edit_get_byte (edit
, edit
->curs1
- 1);
1458 if (!((edit
->curs2
+ 1) & M_EDIT_BUF_SIZE
))
1459 edit
->buffers2
[(edit
->curs2
+ 1) >> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1460 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
) - 1] = c
;
1462 c
= edit
->buffers1
[(edit
->curs1
- 1) >> S_EDIT_BUF_SIZE
][(edit
->curs1
- 1) & M_EDIT_BUF_SIZE
];
1463 if (!((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
)) {
1464 g_free (edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
]);
1465 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = NULL
;
1470 edit
->force
|= REDRAW_LINE_BELOW
;
1474 } else if (increment
> 0) {
1475 for (; increment
> 0; increment
--) {
1479 edit_push_action (edit
, CURS_LEFT
);
1481 c
= edit_get_byte (edit
, edit
->curs1
);
1482 if (!(edit
->curs1
& M_EDIT_BUF_SIZE
))
1483 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1484 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
][edit
->curs1
& M_EDIT_BUF_SIZE
] = c
;
1486 c
= edit
->buffers2
[(edit
->curs2
- 1) >> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- ((edit
->curs2
- 1) & M_EDIT_BUF_SIZE
) - 1];
1487 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1488 g_free (edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
]);
1489 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = 0;
1494 edit
->force
|= REDRAW_LINE_ABOVE
;
1500 /* These functions return positions relative to lines */
1502 /* returns index of last char on line + 1 */
1503 long edit_eol (WEdit
* edit
, long current
)
1505 if (current
< edit
->last_byte
) {
1507 if (edit_get_byte (edit
, current
) == '\n')
1510 return edit
->last_byte
;
1514 /* returns index of first char on line */
1515 long edit_bol (WEdit
* edit
, long current
)
1519 if (edit_get_byte (edit
, current
- 1) == '\n')
1527 int edit_count_lines (WEdit
* edit
, long current
, int upto
)
1530 if (upto
> edit
->last_byte
)
1531 upto
= edit
->last_byte
;
1534 while (current
< upto
)
1535 if (edit_get_byte (edit
, current
++) == '\n')
1541 /* If lines is zero this returns the count of lines from current to upto. */
1542 /* If upto is zero returns index of lines forward current. */
1543 long edit_move_forward (WEdit
* edit
, long current
, int lines
, long upto
)
1546 return edit_count_lines (edit
, current
, upto
);
1552 next
= edit_eol (edit
, current
) + 1;
1553 if (next
> edit
->last_byte
)
1563 /* Returns offset of 'lines' lines up from current */
1564 long edit_move_backward (WEdit
* edit
, long current
, int lines
)
1568 current
= edit_bol (edit
, current
);
1569 while((lines
--) && current
!= 0)
1570 current
= edit_bol (edit
, current
- 1);
1574 /* If cols is zero this returns the count of columns from current to upto. */
1575 /* If upto is zero returns index of cols across from current. */
1576 long edit_move_forward3 (WEdit
* edit
, long current
, int cols
, long upto
)
1584 q
= edit
->last_byte
+ 2;
1599 c
= edit_get_byte (edit
, p
);
1601 c
= edit_get_utf (edit
, p
, &cw
);
1603 c
= edit_get_byte (edit
, p
);
1606 col
+= TAB_SIZE
- col
% TAB_SIZE
;
1607 else if (c
== '\n') {
1612 } else if (c
< 32 || c
== 127) {
1613 /* Caret notation for control characters */
1620 if (edit
->utf8
&& g_unichar_iswide (c
)) {
1625 } else if (edit
->utf8
&& !g_unichar_isprint (c
))
1632 /* returns the current column position of the cursor */
1633 int edit_get_col (WEdit
* edit
)
1635 return edit_move_forward3 (edit
, edit_bol (edit
, edit
->curs1
), 0, edit
->curs1
);
1639 /* Scrolling functions */
1641 void edit_update_curs_row (WEdit
* edit
)
1643 edit
->curs_row
= edit
->curs_line
- edit
->start_line
;
1646 void edit_update_curs_col (WEdit
* edit
)
1648 edit
->curs_col
= edit_move_forward3(edit
, edit_bol(edit
, edit
->curs1
), 0, edit
->curs1
);
1652 edit_get_curs_col (const WEdit
*edit
)
1654 return edit
->curs_col
;
1657 /*moves the display start position up by i lines */
1658 void edit_scroll_upward (WEdit
* edit
, unsigned long i
)
1660 unsigned long lines_above
= edit
->start_line
;
1661 if (i
> lines_above
)
1664 edit
->start_line
-= i
;
1665 edit
->start_display
= edit_move_backward (edit
, edit
->start_display
, i
);
1666 edit
->force
|= REDRAW_PAGE
;
1667 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1669 edit_update_curs_row (edit
);
1673 /* returns 1 if could scroll, 0 otherwise */
1674 void edit_scroll_downward (WEdit
* edit
, int i
)
1677 lines_below
= edit
->total_lines
- edit
->start_line
- (edit
->num_widget_lines
- 1);
1678 if (lines_below
> 0) {
1679 if (i
> lines_below
)
1681 edit
->start_line
+= i
;
1682 edit
->start_display
= edit_move_forward (edit
, edit
->start_display
, i
, 0);
1683 edit
->force
|= REDRAW_PAGE
;
1684 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1686 edit_update_curs_row (edit
);
1689 void edit_scroll_right (WEdit
* edit
, int i
)
1691 edit
->force
|= REDRAW_PAGE
;
1692 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1693 edit
->start_col
-= i
;
1696 void edit_scroll_left (WEdit
* edit
, int i
)
1698 if (edit
->start_col
) {
1699 edit
->start_col
+= i
;
1700 if (edit
->start_col
> 0)
1701 edit
->start_col
= 0;
1702 edit
->force
|= REDRAW_PAGE
;
1703 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1707 /* high level cursor movement commands */
1709 static int is_in_indent (WEdit
*edit
)
1711 long p
= edit_bol (edit
, edit
->curs1
);
1712 while (p
< edit
->curs1
)
1713 if (!strchr (" \t", edit_get_byte (edit
, p
++)))
1718 static int left_of_four_spaces (WEdit
*edit
);
1721 edit_move_to_prev_col (WEdit
* edit
, long p
)
1723 int prev
= edit
->prev_col
;
1724 int over
= edit
->over_col
;
1725 edit_cursor_move (edit
, edit_move_forward3 (edit
, p
, prev
+ edit
->over_col
, 0) - edit
->curs1
);
1727 if (option_cursor_beyond_eol
) {
1728 long line_len
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->curs1
), 0, edit_eol(edit
, edit
->curs1
));
1730 if (line_len
< prev
+ edit
->over_col
) {
1731 edit
->over_col
= prev
+ over
- line_len
;
1732 edit
->prev_col
= line_len
;
1733 edit
->curs_col
= line_len
;
1735 edit
->curs_col
= prev
+ over
;
1736 edit
->prev_col
= edit
->curs_col
;
1741 if (is_in_indent (edit
) && option_fake_half_tabs
) {
1742 edit_update_curs_col (edit
);
1744 if (edit
->curs_col
% (HALF_TAB_SIZE
* space_width
)) {
1745 int q
= edit
->curs_col
;
1746 edit
->curs_col
-= (edit
->curs_col
% (HALF_TAB_SIZE
* space_width
));
1747 p
= edit_bol (edit
, edit
->curs1
);
1748 edit_cursor_move (edit
, edit_move_forward3 (edit
, p
, edit
->curs_col
, 0) - edit
->curs1
);
1749 if (!left_of_four_spaces (edit
))
1750 edit_cursor_move (edit
, edit_move_forward3 (edit
, p
, q
, 0) - edit
->curs1
);
1757 void edit_move_up (WEdit
* edit
, unsigned long i
, int scroll
)
1759 unsigned long p
, l
= edit
->curs_line
;
1765 edit
->force
|= REDRAW_PAGE
;
1767 edit_scroll_upward (edit
, i
);
1769 p
= edit_bol (edit
, edit
->curs1
);
1770 edit_cursor_move (edit
, (p
= edit_move_backward (edit
, p
, i
)) - edit
->curs1
);
1771 edit_move_to_prev_col (edit
, p
);
1773 edit
->search_start
= edit
->curs1
;
1774 edit
->found_len
= 0;
1779 is_blank (WEdit
*edit
, long offset
)
1783 s
= edit_bol (edit
, offset
);
1784 f
= edit_eol (edit
, offset
) - 1;
1786 c
= edit_get_byte (edit
, s
++);
1794 /* returns the offset of line i */
1796 edit_find_line (WEdit
*edit
, int line
)
1800 if (!edit
->caches_valid
) {
1801 for (i
= 0; i
< N_LINE_CACHES
; i
++)
1802 edit
->line_numbers
[i
] = edit
->line_offsets
[i
] = 0;
1803 /* three offsets that we *know* are line 0 at 0 and these two: */
1804 edit
->line_numbers
[1] = edit
->curs_line
;
1805 edit
->line_offsets
[1] = edit_bol (edit
, edit
->curs1
);
1806 edit
->line_numbers
[2] = edit
->total_lines
;
1807 edit
->line_offsets
[2] = edit_bol (edit
, edit
->last_byte
);
1808 edit
->caches_valid
= 1;
1810 if (line
>= edit
->total_lines
)
1811 return edit
->line_offsets
[2];
1814 /* find the closest known point */
1815 for (i
= 0; i
< N_LINE_CACHES
; i
++) {
1817 n
= abs (edit
->line_numbers
[i
] - line
);
1824 return edit
->line_offsets
[j
]; /* know the offset exactly */
1825 if (m
== 1 && j
>= 3)
1826 i
= j
; /* one line different - caller might be looping, so stay in this cache */
1828 i
= 3 + (rand () % (N_LINE_CACHES
- 3));
1829 if (line
> edit
->line_numbers
[j
])
1830 edit
->line_offsets
[i
] = edit_move_forward (edit
, edit
->line_offsets
[j
], line
- edit
->line_numbers
[j
], 0);
1832 edit
->line_offsets
[i
] = edit_move_backward (edit
, edit
->line_offsets
[j
], edit
->line_numbers
[j
] - line
);
1833 edit
->line_numbers
[i
] = line
;
1834 return edit
->line_offsets
[i
];
1837 int line_is_blank (WEdit
* edit
, long line
)
1839 return is_blank (edit
, edit_find_line (edit
, line
));
1842 /* moves up until a blank line is reached, or until just
1843 before a non-blank line is reached */
1844 static void edit_move_up_paragraph (WEdit
* edit
, int scroll
)
1847 if (edit
->curs_line
<= 1) {
1850 if (line_is_blank (edit
, edit
->curs_line
)) {
1851 if (line_is_blank (edit
, edit
->curs_line
- 1)) {
1852 for (i
= edit
->curs_line
- 1; i
; i
--)
1853 if (!line_is_blank (edit
, i
)) {
1858 for (i
= edit
->curs_line
- 1; i
; i
--)
1859 if (line_is_blank (edit
, i
))
1863 for (i
= edit
->curs_line
- 1; i
; i
--)
1864 if (line_is_blank (edit
, i
))
1868 edit_move_up (edit
, edit
->curs_line
- i
, scroll
);
1872 void edit_move_down (WEdit
* edit
, int i
, int scroll
)
1874 long p
, l
= edit
->total_lines
- edit
->curs_line
;
1879 edit
->force
|= REDRAW_PAGE
;
1881 edit_scroll_downward (edit
, i
);
1882 p
= edit_bol (edit
, edit
->curs1
);
1883 edit_cursor_move (edit
, (p
= edit_move_forward (edit
, p
, i
, 0)) - edit
->curs1
);
1884 edit_move_to_prev_col (edit
, p
);
1886 edit
->search_start
= edit
->curs1
;
1887 edit
->found_len
= 0;
1891 /* moves down until a blank line is reached, or until just
1892 before a non-blank line is reached */
1893 static void edit_move_down_paragraph (WEdit
* edit
, int scroll
)
1896 if (edit
->curs_line
>= edit
->total_lines
- 1) {
1897 i
= edit
->total_lines
;
1899 if (line_is_blank (edit
, edit
->curs_line
)) {
1900 if (line_is_blank (edit
, edit
->curs_line
+ 1)) {
1901 for (i
= edit
->curs_line
+ 1; i
; i
++)
1902 if (!line_is_blank (edit
, i
) || i
> edit
->total_lines
) {
1907 for (i
= edit
->curs_line
+ 1; i
; i
++)
1908 if (line_is_blank (edit
, i
) || i
>= edit
->total_lines
)
1912 for (i
= edit
->curs_line
+ 1; i
; i
++)
1913 if (line_is_blank (edit
, i
) || i
>= edit
->total_lines
)
1917 edit_move_down (edit
, i
- edit
->curs_line
, scroll
);
1920 static void edit_begin_page (WEdit
*edit
)
1922 edit_update_curs_row (edit
);
1923 edit_move_up (edit
, edit
->curs_row
, 0);
1926 static void edit_end_page (WEdit
*edit
)
1928 edit_update_curs_row (edit
);
1929 edit_move_down (edit
, edit
->num_widget_lines
- edit
->curs_row
- 1, 0);
1933 /* goto beginning of text */
1934 static void edit_move_to_top (WEdit
* edit
)
1936 if (edit
->curs_line
) {
1937 edit_cursor_move (edit
, -edit
->curs1
);
1938 edit_move_to_prev_col (edit
, 0);
1939 edit
->force
|= REDRAW_PAGE
;
1940 edit
->search_start
= 0;
1941 edit_update_curs_row(edit
);
1946 /* goto end of text */
1947 static void edit_move_to_bottom (WEdit
* edit
)
1949 if (edit
->curs_line
< edit
->total_lines
) {
1950 edit_cursor_move (edit
, edit
->curs2
);
1951 edit
->start_display
= edit
->last_byte
;
1952 edit
->start_line
= edit
->total_lines
;
1953 edit_update_curs_row(edit
);
1954 edit_scroll_upward (edit
, edit
->num_widget_lines
- 1);
1955 edit
->force
|= REDRAW_PAGE
;
1959 /* goto beginning of line */
1960 static void edit_cursor_to_bol (WEdit
* edit
)
1962 edit_cursor_move (edit
, edit_bol (edit
, edit
->curs1
) - edit
->curs1
);
1963 edit
->search_start
= edit
->curs1
;
1964 edit
->prev_col
= edit_get_col (edit
);
1968 /* goto end of line */
1969 static void edit_cursor_to_eol (WEdit
* edit
)
1971 edit_cursor_move (edit
, edit_eol (edit
, edit
->curs1
) - edit
->curs1
);
1972 edit
->search_start
= edit
->curs1
;
1973 edit
->prev_col
= edit_get_col (edit
);
1977 /* move cursor to line 'line' */
1978 void edit_move_to_line (WEdit
* e
, long line
)
1980 if(line
< e
->curs_line
)
1981 edit_move_up (e
, e
->curs_line
- line
, 0);
1983 edit_move_down (e
, line
- e
->curs_line
, 0);
1984 edit_scroll_screen_over_cursor (e
);
1987 /* scroll window so that first visible line is 'line' */
1988 void edit_move_display (WEdit
* e
, long line
)
1990 if(line
< e
->start_line
)
1991 edit_scroll_upward (e
, e
->start_line
- line
);
1993 edit_scroll_downward (e
, line
- e
->start_line
);
1996 /* save markers onto undo stack */
1997 void edit_push_markers (WEdit
* edit
)
1999 edit_push_action (edit
, MARK_1
+ edit
->mark1
);
2000 edit_push_action (edit
, MARK_2
+ edit
->mark2
);
2003 void edit_set_markers (WEdit
* edit
, long m1
, long m2
, int c1
, int c2
)
2012 /* highlight marker toggle */
2013 void edit_mark_cmd (WEdit
* edit
, int unmark
)
2015 edit_push_markers (edit
);
2017 edit_set_markers (edit
, 0, 0, 0, 0);
2018 edit
->force
|= REDRAW_PAGE
;
2020 if (edit
->mark2
>= 0) {
2021 edit_set_markers (edit
, edit
->curs1
, -1, edit
->curs_col
+edit
->over_col
, edit
->curs_col
+edit
->over_col
);
2022 edit
->force
|= REDRAW_PAGE
;
2024 edit_set_markers (edit
, edit
->mark1
, edit
->curs1
, edit
->column1
, edit
->curs_col
+edit
->over_col
);
2028 static unsigned long
2033 const char option_chars_move_whole_word
[] =
2034 "!=&|<>^~ !:;, !'!`!.?!\"!( !) !Aa0 !+-*/= |<> ![ !] !\\#! ";
2039 if (*option_chars_move_whole_word
== '!')
2041 return 0x80000000UL
;
2043 if (g_ascii_isupper ((gchar
) c
))
2045 else if (g_ascii_islower ((gchar
) c
))
2047 else if (g_ascii_isalpha (c
))
2049 else if (isdigit (c
))
2051 else if (isspace (c
))
2053 q
= strchr (option_chars_move_whole_word
, c
);
2055 return 0xFFFFFFFFUL
;
2057 for (x
= 1, p
= option_chars_move_whole_word
; p
< q
; p
++)
2061 } while ((q
= strchr (q
+ 1, c
)));
2066 edit_left_word_move (WEdit
*edit
, int s
)
2070 if (column_highlighting
2071 && edit
->mark1
!= edit
->mark2
2072 && edit
->over_col
== 0
2073 && edit
->curs1
== edit_bol(edit
, edit
->curs1
))
2075 edit_cursor_move (edit
, -1);
2078 c1
= edit_get_byte (edit
, edit
->curs1
- 1);
2079 c2
= edit_get_byte (edit
, edit
->curs1
);
2080 if (!(my_type_of (c1
) & my_type_of (c2
)))
2082 if (isspace (c1
) && !isspace (c2
))
2085 if (!isspace (c1
) && isspace (c2
))
2090 static void edit_left_word_move_cmd (WEdit
* edit
)
2092 edit_left_word_move (edit
, 0);
2093 edit
->force
|= REDRAW_PAGE
;
2097 edit_right_word_move (WEdit
*edit
, int s
)
2101 if (column_highlighting
2102 && edit
->mark1
!= edit
->mark2
2103 && edit
->over_col
== 0
2104 && edit
->curs1
== edit_eol(edit
, edit
->curs1
)
2107 edit_cursor_move (edit
, 1);
2108 if (edit
->curs1
>= edit
->last_byte
)
2110 c1
= edit_get_byte (edit
, edit
->curs1
- 1);
2111 c2
= edit_get_byte (edit
, edit
->curs1
);
2112 if (!(my_type_of (c1
) & my_type_of (c2
)))
2114 if (isspace (c1
) && !isspace (c2
))
2117 if (!isspace (c1
) && isspace (c2
))
2122 static void edit_right_word_move_cmd (WEdit
* edit
)
2124 edit_right_word_move (edit
, 0);
2125 edit
->force
|= REDRAW_PAGE
;
2128 static void edit_right_char_move_cmd (WEdit
* edit
)
2133 c
= edit_get_utf (edit
, edit
->curs1
, &cw
);
2137 c
= edit_get_byte (edit
, edit
->curs1
);
2139 if (option_cursor_beyond_eol
&& c
== '\n') {
2142 edit_cursor_move (edit
, cw
);
2146 static void edit_left_char_move_cmd (WEdit
* edit
)
2149 if (column_highlighting
2150 && edit
->mark1
!= edit
->mark2
2151 && edit
->over_col
== 0
2152 && edit
->curs1
== edit_bol(edit
, edit
->curs1
))
2155 edit_get_prev_utf (edit
, edit
->curs1
, &cw
);
2159 if (option_cursor_beyond_eol
&& edit
->over_col
> 0) {
2162 edit_cursor_move (edit
, -cw
);
2166 static void edit_right_delete_word (WEdit
* edit
)
2170 if (edit
->curs1
>= edit
->last_byte
)
2172 c1
= edit_delete (edit
, 1);
2173 c2
= edit_get_byte (edit
, edit
->curs1
);
2174 if ((isspace (c1
) == 0) != (isspace (c2
) == 0))
2176 if (!(my_type_of (c1
) & my_type_of (c2
)))
2181 static void edit_left_delete_word (WEdit
* edit
)
2185 if (edit
->curs1
<= 0)
2187 c1
= edit_backspace (edit
, 1);
2188 c2
= edit_get_byte (edit
, edit
->curs1
- 1);
2189 if ((isspace (c1
) == 0) != (isspace (c2
) == 0))
2191 if (!(my_type_of (c1
) & my_type_of (c2
)))
2197 the start column position is not recorded, and hence does not
2198 undo as it happed. But who would notice.
2201 edit_do_undo (WEdit
* edit
)
2206 edit
->stack_disable
= 1; /* don't record undo's onto undo stack! */
2208 while ((ac
= pop_action (edit
)) < KEY_PRESS
) {
2213 edit_cursor_move (edit
, 1);
2216 edit_cursor_move (edit
, -1);
2219 edit_backspace (edit
, 1);
2222 edit_delete (edit
, 1);
2225 column_highlighting
= 1;
2228 column_highlighting
= 0;
2231 if (ac
>= 256 && ac
< 512)
2232 edit_insert_ahead (edit
, ac
- 256);
2233 if (ac
>= 0 && ac
< 256)
2234 edit_insert (edit
, ac
);
2236 if (ac
>= MARK_1
- 2 && ac
< MARK_2
- 2) {
2237 edit
->mark1
= ac
- MARK_1
;
2238 edit
->column1
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->mark1
), 0, edit
->mark1
);
2239 } else if (ac
>= MARK_2
- 2 && ac
< KEY_PRESS
) {
2240 edit
->mark2
= ac
- MARK_2
;
2241 edit
->column2
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->mark2
), 0, edit
->mark2
);
2244 edit
->force
|= REDRAW_PAGE
; /* more than one pop usually means something big */
2247 if (edit
->start_display
> ac
- KEY_PRESS
) {
2248 edit
->start_line
-= edit_count_lines (edit
, ac
- KEY_PRESS
, edit
->start_display
);
2249 edit
->force
|= REDRAW_PAGE
;
2250 } else if (edit
->start_display
< ac
- KEY_PRESS
) {
2251 edit
->start_line
+= edit_count_lines (edit
, edit
->start_display
, ac
- KEY_PRESS
);
2252 edit
->force
|= REDRAW_PAGE
;
2254 edit
->start_display
= ac
- KEY_PRESS
; /* see push and pop above */
2255 edit_update_curs_row (edit
);
2258 edit
->stack_disable
= 0;
2261 static void edit_delete_to_line_end (WEdit
* edit
)
2263 while (edit_get_byte (edit
, edit
->curs1
) != '\n') {
2266 edit_delete (edit
, 1);
2270 static void edit_delete_to_line_begin (WEdit
* edit
)
2272 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n') {
2275 edit_backspace (edit
, 1);
2280 edit_delete_line (WEdit
*edit
)
2283 * Delete right part of the line.
2284 * Note that edit_get_byte() returns '\n' when byte position is
2287 while (edit_get_byte (edit
, edit
->curs1
) != '\n') {
2288 (void) edit_delete (edit
, 1);
2293 * Note that edit_delete() will not corrupt anything if called while
2294 * cursor position is EOF.
2296 (void) edit_delete (edit
, 1);
2299 * Delete left part of the line.
2300 * Note, that edit_get_byte() returns '\n' when byte position is < 0.
2302 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n') {
2303 (void) edit_backspace (edit
, 1);
2307 void insert_spaces_tab (WEdit
* edit
, int half
)
2310 edit_update_curs_col (edit
);
2311 i
= ((edit
->curs_col
/ (option_tab_spacing
* space_width
/ (half
+ 1))) + 1) * (option_tab_spacing
* space_width
/ (half
+ 1)) - edit
->curs_col
;
2313 edit_insert (edit
, ' ');
2318 static int is_aligned_on_a_tab (WEdit
* edit
)
2320 edit_update_curs_col (edit
);
2321 if ((edit
->curs_col
% (TAB_SIZE
* space_width
)) && edit
->curs_col
% (TAB_SIZE
* space_width
) != (HALF_TAB_SIZE
* space_width
))
2322 return 0; /* not alligned on a tab */
2326 static int right_of_four_spaces (WEdit
*edit
)
2329 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2330 ch
|= edit_get_byte (edit
, edit
->curs1
- i
);
2332 return is_aligned_on_a_tab (edit
);
2336 static int left_of_four_spaces (WEdit
*edit
)
2339 for (i
= 0; i
< HALF_TAB_SIZE
; i
++)
2340 ch
|= edit_get_byte (edit
, edit
->curs1
+ i
);
2342 return is_aligned_on_a_tab (edit
);
2346 int edit_indent_width (WEdit
* edit
, long p
)
2349 while (strchr ("\t ", edit_get_byte (edit
, q
)) && q
< edit
->last_byte
- 1) /* move to the end of the leading whitespace of the line */
2351 return edit_move_forward3 (edit
, p
, 0, q
); /* count the number of columns of indentation */
2354 void edit_insert_indent (WEdit
* edit
, int indent
)
2356 if (!option_fill_tabs_with_spaces
) {
2357 while (indent
>= TAB_SIZE
) {
2358 edit_insert (edit
, '\t');
2362 while (indent
-- > 0)
2363 edit_insert (edit
, ' ');
2367 edit_auto_indent (WEdit
* edit
)
2372 /* use the previous line as a template */
2373 p
= edit_move_backward (edit
, p
, 1);
2374 /* copy the leading whitespace of the line */
2375 for (;;) { /* no range check - the line _is_ \n-terminated */
2376 c
= edit_get_byte (edit
, p
++);
2377 if (c
!= ' ' && c
!= '\t')
2379 edit_insert (edit
, c
);
2383 static void edit_double_newline (WEdit
* edit
)
2385 edit_insert (edit
, '\n');
2386 if (edit_get_byte (edit
, edit
->curs1
) == '\n')
2388 if (edit_get_byte (edit
, edit
->curs1
- 2) == '\n')
2390 edit
->force
|= REDRAW_PAGE
;
2391 edit_insert (edit
, '\n');
2394 static void edit_tab_cmd (WEdit
* edit
)
2398 if (option_fake_half_tabs
) {
2399 if (is_in_indent (edit
)) {
2400 /*insert a half tab (usually four spaces) unless there is a
2401 half tab already behind, then delete it and insert a
2403 if (!option_fill_tabs_with_spaces
&& right_of_four_spaces (edit
)) {
2404 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2405 edit_backspace (edit
, 1);
2406 edit_insert (edit
, '\t');
2408 insert_spaces_tab (edit
, 1);
2413 if (option_fill_tabs_with_spaces
) {
2414 insert_spaces_tab (edit
, 0);
2416 edit_insert (edit
, '\t');
2421 static void check_and_wrap_line (WEdit
* edit
)
2424 if (!option_typewriter_wrap
)
2426 edit_update_curs_col (edit
);
2427 if (edit
->curs_col
< option_word_wrap_line_length
)
2432 c
= edit_get_byte (edit
, curs
);
2433 if (c
== '\n' || curs
<= 0) {
2434 edit_insert (edit
, '\n');
2437 if (c
== ' ' || c
== '\t') {
2438 int current
= edit
->curs1
;
2439 edit_cursor_move (edit
, curs
- edit
->curs1
+ 1);
2440 edit_insert (edit
, '\n');
2441 edit_cursor_move (edit
, current
- edit
->curs1
+ 1);
2447 static void edit_execute_macro (WEdit
*edit
, struct macro macro
[], int n
);
2449 void edit_push_key_press (WEdit
* edit
)
2451 edit_push_action (edit
, KEY_PRESS
+ edit
->start_display
);
2452 if (edit
->mark2
== -1)
2453 edit_push_action (edit
, MARK_1
+ edit
->mark1
);
2456 /* this find the matching bracket in either direction, and sets edit->bracket */
2457 static long edit_get_bracket (WEdit
* edit
, int in_screen
, unsigned long furthest_bracket_search
)
2459 const char * const b
= "{}{[][()(", *p
;
2460 int i
= 1, a
, inc
= -1, c
, d
, n
= 0;
2461 unsigned long j
= 0;
2463 edit_update_curs_row (edit
);
2464 c
= edit_get_byte (edit
, edit
->curs1
);
2467 if (!furthest_bracket_search
)
2468 furthest_bracket_search
--;
2469 /* not on a bracket at all */
2472 /* the matching bracket */
2474 /* going left or right? */
2475 if (strchr ("{[(", c
))
2477 for (q
= edit
->curs1
+ inc
;; q
+= inc
) {
2478 /* out of buffer? */
2479 if (q
>= edit
->last_byte
|| q
< 0)
2481 a
= edit_get_byte (edit
, q
);
2482 /* don't want to eat CPU */
2483 if (j
++ > furthest_bracket_search
)
2485 /* out of screen? */
2487 if (q
< edit
->start_display
)
2489 /* count lines if searching downward */
2490 if (inc
> 0 && a
== '\n')
2491 if (n
++ >= edit
->num_widget_lines
- edit
->curs_row
) /* out of screen */
2494 /* count bracket depth */
2495 i
+= (a
== c
) - (a
== d
);
2496 /* return if bracket depth is zero */
2504 static long last_bracket
= -1;
2506 void edit_find_bracket (WEdit
* edit
)
2508 edit
->bracket
= edit_get_bracket (edit
, 1, 10000);
2509 if (last_bracket
!= edit
->bracket
)
2510 edit
->force
|= REDRAW_PAGE
;
2511 last_bracket
= edit
->bracket
;
2514 static void edit_goto_matching_bracket (WEdit
*edit
)
2517 q
= edit_get_bracket (edit
, 0, 0);
2520 edit
->bracket
= edit
->curs1
;
2521 edit
->force
|= REDRAW_PAGE
;
2522 edit_cursor_move (edit
, q
- edit
->curs1
);
2526 * This executes a command as though the user initiated it through a key
2527 * press. Callback with WIDGET_KEY as a message calls this after
2528 * translating the key press. This function can be used to pass any
2529 * command to the editor. Note that the screen wouldn't update
2530 * automatically. Either of command or char_for_insertion must be
2531 * passed as -1. Commands are executed, and char_for_insertion is
2532 * inserted at the cursor.
2535 edit_execute_key_command (WEdit
*edit
, unsigned long command
, int char_for_insertion
)
2537 if (command
== CK_Begin_Record_Macro
) {
2539 edit
->force
|= REDRAW_CHAR_ONLY
| REDRAW_LINE
;
2542 if (command
== CK_End_Record_Macro
&& edit
->macro_i
!= -1) {
2543 edit
->force
|= REDRAW_COMPLETELY
;
2544 edit_save_macro_cmd (edit
, edit
->macro
, edit
->macro_i
);
2548 if (edit
->macro_i
>= 0 && edit
->macro_i
< MAX_MACRO_LENGTH
- 1) {
2549 edit
->macro
[edit
->macro_i
].command
= command
;
2550 edit
->macro
[edit
->macro_i
++].ch
= char_for_insertion
;
2552 /* record the beginning of a set of editing actions initiated by a key press */
2553 if (command
!= CK_Undo
&& command
!= CK_Ext_Mode
)
2554 edit_push_key_press (edit
);
2556 edit_execute_cmd (edit
, command
, char_for_insertion
);
2557 if (column_highlighting
)
2558 edit
->force
|= REDRAW_PAGE
;
2561 static const char * const shell_cmd
[] = SHELL_COMMANDS_i
;
2564 This executes a command at a lower level than macro recording.
2565 It also does not push a key_press onto the undo stack. This means
2566 that if it is called many times, a single undo command will undo
2567 all of them. It also does not check for the Undo command.
2570 edit_execute_cmd (WEdit
*edit
, int command
, int char_for_insertion
)
2572 edit
->force
|= REDRAW_LINE
;
2574 /* The next key press will unhighlight the found string, so update
2576 if (edit
->found_len
|| column_highlighting
)
2577 edit
->force
|= REDRAW_PAGE
;
2579 if (command
/ 100 == 6) { /* a highlight command like shift-arrow */
2580 column_highlighting
= 0;
2581 if (!edit
->highlight
2582 || (edit
->mark2
!= -1 && edit
->mark1
!= edit
->mark2
)) {
2583 edit_mark_cmd (edit
, 1); /* clear */
2584 edit_mark_cmd (edit
, 0); /* marking on */
2586 edit
->highlight
= 1;
2587 } else { /* any other command */
2588 if (edit
->highlight
)
2589 edit_mark_cmd (edit
, 0); /* clear */
2590 edit
->highlight
= 0;
2593 /* first check for undo */
2594 if (command
== CK_Undo
) {
2595 edit_do_undo (edit
);
2596 edit
->found_len
= 0;
2597 edit
->prev_col
= edit_get_col (edit
);
2598 edit
->search_start
= edit
->curs1
;
2602 /* An ordinary key press */
2603 if (char_for_insertion
>= 0) {
2604 if (edit
->overwrite
) {
2605 if (edit_get_byte (edit
, edit
->curs1
) != '\n')
2606 edit_delete (edit
, 0);
2608 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2609 edit_insert_over (edit
);
2611 if ( char_for_insertion
> 255 && utf8_display
== 0 ) {
2612 unsigned char str
[6 + 1];
2614 int res
= g_unichar_to_utf8 (char_for_insertion
, (char *)str
);
2621 while ( str
[i
] != 0 && i
<=6) {
2622 char_for_insertion
= str
[i
];
2623 edit_insert (edit
, char_for_insertion
);
2628 edit_insert (edit
, char_for_insertion
);
2632 if (option_auto_para_formatting
) {
2633 format_paragraph (edit
, 0);
2634 edit
->force
|= REDRAW_PAGE
;
2636 check_and_wrap_line (edit
);
2637 edit
->found_len
= 0;
2638 edit
->prev_col
= edit_get_col (edit
);
2639 edit
->search_start
= edit
->curs1
;
2640 edit_find_bracket (edit
);
2647 case CK_Begin_Page_Highlight
:
2648 case CK_End_Page_Highlight
:
2655 if ( edit
->mark2
>= 0 ) {
2656 if ( !option_persistent_selections
) {
2657 if (column_highlighting
)
2658 edit_push_action (edit
, COLUMN_ON
);
2659 column_highlighting
= 0;
2660 edit_mark_cmd (edit
, 1);
2668 case CK_Begin_Page_Highlight
:
2669 case CK_End_Page_Highlight
:
2674 case CK_Word_Left_Highlight
:
2675 case CK_Word_Right_Highlight
:
2676 case CK_Up_Highlight
:
2677 case CK_Down_Highlight
:
2678 case CK_Up_Alt_Highlight
:
2679 case CK_Down_Alt_Highlight
:
2680 if (edit
->mark2
== -1)
2681 break; /*marking is following the cursor: may need to highlight a whole line */
2684 case CK_Left_Highlight
:
2685 case CK_Right_Highlight
:
2686 edit
->force
|= REDRAW_CHAR_ONLY
;
2689 /* basic cursor key commands */
2692 /* if non persistent selection and text selected */
2693 if ( !option_persistent_selections
) {
2694 if ( edit
->mark1
!= edit
->mark2
) {
2695 edit_block_delete_cmd (edit
);
2699 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 ) {
2703 if (option_backspace_through_tabs
&& is_in_indent (edit
)) {
2704 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n'
2706 edit_backspace (edit
, 1);
2709 if (option_fake_half_tabs
) {
2711 if (is_in_indent (edit
) && right_of_four_spaces (edit
)) {
2712 for (i
= 0; i
< HALF_TAB_SIZE
; i
++)
2713 edit_backspace (edit
, 1);
2718 edit_backspace (edit
, 0);
2721 /* if non persistent selection and text selected */
2722 if ( !option_persistent_selections
) {
2723 if ( edit
->mark1
!= edit
->mark2
) {
2724 edit_block_delete_cmd (edit
);
2729 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2730 edit_insert_over (edit
);
2732 if (option_fake_half_tabs
) {
2734 if (is_in_indent (edit
) && left_of_four_spaces (edit
)) {
2735 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2736 edit_delete (edit
, 1);
2740 edit_delete (edit
, 0);
2742 case CK_Delete_Word_Left
:
2744 edit_left_delete_word (edit
);
2746 case CK_Delete_Word_Right
:
2747 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2748 edit_insert_over (edit
);
2750 edit_right_delete_word (edit
);
2752 case CK_Delete_Line
:
2753 edit_delete_line (edit
);
2755 case CK_Delete_To_Line_End
:
2756 edit_delete_to_line_end (edit
);
2758 case CK_Delete_To_Line_Begin
:
2759 edit_delete_to_line_begin (edit
);
2763 if (option_auto_para_formatting
) {
2764 edit_double_newline (edit
);
2765 if (option_return_does_auto_indent
)
2766 edit_auto_indent (edit
);
2767 format_paragraph (edit
, 0);
2769 edit_insert (edit
, '\n');
2770 if (option_return_does_auto_indent
) {
2771 edit_auto_indent (edit
);
2776 edit_insert (edit
, '\n');
2779 case CK_Page_Up_Alt_Highlight
:
2780 column_highlighting
= 1;
2782 case CK_Page_Up_Highlight
:
2783 edit_move_up (edit
, edit
->num_widget_lines
- 1, 1);
2785 case CK_Page_Down_Alt_Highlight
:
2786 column_highlighting
= 1;
2788 case CK_Page_Down_Highlight
:
2789 edit_move_down (edit
, edit
->num_widget_lines
- 1, 1);
2791 case CK_Left_Alt_Highlight
:
2792 column_highlighting
= 1;
2794 case CK_Left_Highlight
:
2795 if (option_fake_half_tabs
) {
2796 if (is_in_indent (edit
) && right_of_four_spaces (edit
)) {
2797 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0)
2800 edit_cursor_move (edit
, -HALF_TAB_SIZE
);
2801 edit
->force
&= (0xFFF - REDRAW_CHAR_ONLY
);
2805 edit_left_char_move_cmd (edit
);
2807 case CK_Right_Alt_Highlight
:
2808 column_highlighting
= 1;
2810 case CK_Right_Highlight
:
2811 if (option_fake_half_tabs
) {
2812 if (is_in_indent (edit
) && left_of_four_spaces (edit
)) {
2813 edit_cursor_move (edit
, HALF_TAB_SIZE
);
2814 edit
->force
&= (0xFFF - REDRAW_CHAR_ONLY
);
2818 edit_right_char_move_cmd (edit
);
2821 case CK_Begin_Page_Highlight
:
2822 edit_begin_page (edit
);
2825 case CK_End_Page_Highlight
:
2826 edit_end_page (edit
);
2829 case CK_Word_Left_Highlight
:
2831 edit_left_word_move_cmd (edit
);
2834 case CK_Word_Right_Highlight
:
2836 edit_right_word_move_cmd (edit
);
2838 case CK_Up_Alt_Highlight
:
2839 column_highlighting
= 1;
2841 case CK_Up_Highlight
:
2842 edit_move_up (edit
, 1, 0);
2844 case CK_Down_Alt_Highlight
:
2845 column_highlighting
= 1;
2847 case CK_Down_Highlight
:
2848 edit_move_down (edit
, 1, 0);
2850 case CK_Paragraph_Up_Alt_Highlight
:
2851 column_highlighting
= 1;
2852 case CK_Paragraph_Up
:
2853 case CK_Paragraph_Up_Highlight
:
2854 edit_move_up_paragraph (edit
, 0);
2856 case CK_Paragraph_Down_Alt_Highlight
:
2857 column_highlighting
= 1;
2858 case CK_Paragraph_Down
:
2859 case CK_Paragraph_Down_Highlight
:
2860 edit_move_down_paragraph (edit
, 0);
2862 case CK_Scroll_Up_Alt_Highlight
:
2863 column_highlighting
= 1;
2865 case CK_Scroll_Up_Highlight
:
2866 edit_move_up (edit
, 1, 1);
2868 case CK_Scroll_Down_Alt_Highlight
:
2869 column_highlighting
= 1;
2870 case CK_Scroll_Down
:
2871 case CK_Scroll_Down_Highlight
:
2872 edit_move_down (edit
, 1, 1);
2875 case CK_Home_Highlight
:
2876 edit_cursor_to_bol (edit
);
2879 case CK_End_Highlight
:
2880 edit_cursor_to_eol (edit
);
2883 /* if text marked shift block */
2884 if ( edit
->mark1
!= edit
->mark2
&& !option_persistent_selections
) {
2885 if (edit
->mark2
< 0)
2886 edit_mark_cmd (edit
, 0);
2887 edit_move_block_to_right (edit
);
2889 if ( option_cursor_beyond_eol
)
2890 edit_insert_over (edit
);
2891 edit_tab_cmd (edit
);
2892 if (option_auto_para_formatting
) {
2893 format_paragraph (edit
, 0);
2894 edit
->force
|= REDRAW_PAGE
;
2896 check_and_wrap_line (edit
);
2901 case CK_Toggle_Insert
:
2902 edit
->overwrite
= (edit
->overwrite
== 0);
2906 if (edit
->mark2
>= 0) {
2907 if (column_highlighting
)
2908 edit_push_action (edit
, COLUMN_ON
);
2909 column_highlighting
= 0;
2911 edit_mark_cmd (edit
, 0);
2913 case CK_Column_Mark
:
2914 if (!column_highlighting
)
2915 edit_push_action (edit
, COLUMN_OFF
);
2916 column_highlighting
= 1;
2917 edit_mark_cmd (edit
, 0);
2920 if (column_highlighting
)
2921 edit_push_action (edit
, COLUMN_ON
);
2922 column_highlighting
= 0;
2923 edit_mark_cmd (edit
, 1);
2926 case CK_Toggle_Line_State
:
2927 option_line_state
= !option_line_state
;
2928 if ( option_line_state
) {
2929 option_line_state_width
= LINE_STATE_WIDTH
;
2931 option_line_state_width
= 0;
2933 edit
->force
|= REDRAW_PAGE
;
2936 case CK_Toggle_Bookmark
:
2937 book_mark_clear (edit
, edit
->curs_line
, BOOK_MARK_FOUND_COLOR
);
2938 if (book_mark_query_color (edit
, edit
->curs_line
, BOOK_MARK_COLOR
))
2939 book_mark_clear (edit
, edit
->curs_line
, BOOK_MARK_COLOR
);
2941 book_mark_insert (edit
, edit
->curs_line
, BOOK_MARK_COLOR
);
2943 case CK_Flush_Bookmarks
:
2944 book_mark_flush (edit
, BOOK_MARK_COLOR
);
2945 book_mark_flush (edit
, BOOK_MARK_FOUND_COLOR
);
2946 edit
->force
|= REDRAW_PAGE
;
2948 case CK_Next_Bookmark
:
2949 if (edit
->book_mark
) {
2950 struct _book_mark
*p
;
2951 p
= (struct _book_mark
*) book_mark_find (edit
,
2955 if (p
->line
>= edit
->start_line
+ edit
->num_widget_lines
2956 || p
->line
< edit
->start_line
)
2957 edit_move_display (edit
,
2959 edit
->num_widget_lines
/ 2);
2960 edit_move_to_line (edit
, p
->line
);
2964 case CK_Prev_Bookmark
:
2965 if (edit
->book_mark
) {
2966 struct _book_mark
*p
;
2967 p
= (struct _book_mark
*) book_mark_find (edit
,
2969 while (p
->line
== edit
->curs_line
)
2973 if (p
->line
>= edit
->start_line
+ edit
->num_widget_lines
2974 || p
->line
< edit
->start_line
)
2975 edit_move_display (edit
,
2977 edit
->num_widget_lines
/ 2);
2978 edit_move_to_line (edit
, p
->line
);
2983 case CK_Beginning_Of_Text
:
2984 case CK_Beginning_Of_Text_Highlight
:
2985 edit_move_to_top (edit
);
2987 case CK_End_Of_Text
:
2988 case CK_End_Of_Text_Highlight
:
2989 edit_move_to_bottom (edit
);
2993 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2994 edit_insert_over (edit
);
2995 edit_block_copy_cmd (edit
);
2998 edit_block_delete_cmd (edit
);
3001 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
3002 edit_insert_over (edit
);
3003 edit_block_move_cmd (edit
);
3006 case CK_Shift_Block_Left
:
3007 if (edit
->mark1
!= edit
->mark2
)
3008 edit_move_block_to_left (edit
);
3010 case CK_Shift_Block_Right
:
3011 if (edit
->mark1
!= edit
->mark2
)
3012 edit_move_block_to_right (edit
);
3015 edit_copy_to_X_buf_cmd (edit
);
3018 edit_cut_to_X_buf_cmd (edit
);
3021 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
3022 edit_insert_over (edit
);
3023 edit_paste_from_X_buf_cmd (edit
);
3025 case CK_Selection_History
:
3026 edit_paste_from_history (edit
);
3030 edit_save_as_cmd (edit
);
3033 edit_save_confirm_cmd (edit
);
3036 edit_load_cmd (edit
, EDIT_FILE_COMMON
);
3039 edit_save_block_cmd (edit
);
3041 case CK_Insert_File
:
3042 edit_insert_file_cmd (edit
);
3045 case CK_Load_Prev_File
:
3046 edit_load_back_cmd (edit
);
3048 case CK_Load_Next_File
:
3049 edit_load_forward_cmd (edit
);
3052 case CK_Load_Syntax_File
:
3053 edit_load_cmd (edit
, EDIT_FILE_SYNTAX
);
3055 case CK_Choose_Syntax
:
3056 edit_syntax_dialog ();
3059 case CK_Load_Menu_File
:
3060 edit_load_cmd (edit
, EDIT_FILE_MENU
);
3063 case CK_Toggle_Syntax
:
3064 if ((option_syntax_highlighting
^= 1) == 1)
3065 edit_load_syntax (edit
, NULL
, option_syntax_type
);
3066 edit
->force
|= REDRAW_PAGE
;
3069 case CK_Toggle_Tab_TWS
:
3070 enable_show_tabs_tws
^= 1;
3071 edit
->force
|= REDRAW_PAGE
;
3075 edit_search_cmd (edit
, 0);
3078 edit_search_cmd (edit
, 1);
3081 edit_replace_cmd (edit
, 0);
3083 case CK_Replace_Again
:
3084 edit_replace_cmd (edit
, 1);
3086 case CK_Complete_Word
:
3087 /* if text marked shift block */
3088 if ( edit
->mark1
!= edit
->mark2
&& !option_persistent_selections
) {
3089 edit_move_block_to_left (edit
);
3091 edit_complete_word_cmd (edit
);
3094 case CK_Find_Definition
:
3095 edit_get_match_keyword_cmd (edit
);
3098 dlg_stop (edit
->widget
.parent
);
3101 edit_new_cmd (edit
);
3104 edit_help_cmd (edit
);
3107 edit_refresh_cmd (edit
);
3109 case CK_SaveSetupCmd
:
3113 query_dialog (_(" About "),
3114 _("\n Cooledit v3.11.5\n\n"
3115 " Copyright (C) 1996 the Free Software Foundation\n\n"
3116 " A user friendly text editor written\n"
3117 " for the Midnight Commander.\n"), D_NORMAL
,
3123 case CK_Edit_Options
:
3124 edit_options_dialog ();
3126 case CK_Edit_Save_Mode
:
3127 menu_save_mode_cmd ();
3132 /* fool gcc to prevent a Y2K warning */
3133 char time_format
[] = "_c";
3134 time_format
[0] = '%';
3136 FMT_LOCALTIME_CURRENT(s
, sizeof(s
), time_format
);
3137 edit_print_string (edit
, s
);
3138 edit
->force
|= REDRAW_PAGE
;
3143 edit_goto_cmd (edit
);
3145 case CK_Paragraph_Format
:
3146 format_paragraph (edit
, 1);
3147 edit
->force
|= REDRAW_PAGE
;
3149 case CK_Delete_Macro
:
3150 edit_delete_macro_cmd (edit
);
3152 case CK_Match_Bracket
:
3153 edit_goto_matching_bracket (edit
);
3159 edit_sort_cmd (edit
);
3162 edit_ext_cmd (edit
);
3165 edit_mail_dialog (edit
);
3170 case CK_SelectCodepage
:
3171 edit_select_codepage_cmd (edit
);
3173 case CK_Insert_Literal
:
3174 edit_insert_literal_cmd (edit
);
3176 case CK_Execute_Macro
:
3177 edit_execute_macro_cmd (edit
);
3179 case CK_Begin_End_Macro
:
3180 edit_begin_end_macro_cmd (edit
);
3190 if ((command
/ 1000) == 1) /* a shell command */
3191 edit_block_process_cmd (edit
, shell_cmd
[command
- 1000], 1);
3192 if (command
> CK_Macro (0) && command
<= CK_Last_Macro
) { /* a macro command */
3193 struct macro m
[MAX_MACRO_LENGTH
];
3195 if (edit_load_macro_cmd (edit
, m
, &nm
, command
- 2000))
3196 edit_execute_macro (edit
, m
, nm
);
3199 /* keys which must set the col position, and the search vars */
3204 case CK_Replace_Again
:
3205 case CK_Complete_Word
:
3206 edit
->prev_col
= edit_get_col (edit
);
3209 case CK_Up_Highlight
:
3210 case CK_Up_Alt_Highlight
:
3212 case CK_Down_Highlight
:
3213 case CK_Down_Alt_Highlight
:
3215 case CK_Page_Up_Highlight
:
3216 case CK_Page_Up_Alt_Highlight
:
3218 case CK_Page_Down_Highlight
:
3219 case CK_Page_Down_Alt_Highlight
:
3220 case CK_Beginning_Of_Text
:
3221 case CK_Beginning_Of_Text_Highlight
:
3222 case CK_End_Of_Text
:
3223 case CK_End_Of_Text_Highlight
:
3224 case CK_Paragraph_Up
:
3225 case CK_Paragraph_Up_Highlight
:
3226 case CK_Paragraph_Up_Alt_Highlight
:
3227 case CK_Paragraph_Down
:
3228 case CK_Paragraph_Down_Highlight
:
3229 case CK_Paragraph_Down_Alt_Highlight
:
3231 case CK_Scroll_Up_Highlight
:
3232 case CK_Scroll_Up_Alt_Highlight
:
3233 case CK_Scroll_Down
:
3234 case CK_Scroll_Down_Highlight
:
3235 case CK_Scroll_Down_Alt_Highlight
:
3236 edit
->search_start
= edit
->curs1
;
3237 edit
->found_len
= 0;
3240 edit
->found_len
= 0;
3241 edit
->prev_col
= edit_get_col (edit
);
3242 edit
->search_start
= edit
->curs1
;
3244 edit_find_bracket (edit
);
3246 if (option_auto_para_formatting
) {
3250 case CK_Delete_Word_Left
:
3251 case CK_Delete_Word_Right
:
3252 case CK_Delete_To_Line_End
:
3253 case CK_Delete_To_Line_Begin
:
3254 format_paragraph (edit
, 0);
3255 edit
->force
|= REDRAW_PAGE
;
3262 edit_execute_macro (WEdit
*edit
, struct macro macro
[], int n
)
3266 if (edit
->macro_depth
++ > 256) {
3267 edit_error_dialog (_("Error"), _("Macro recursion is too deep"));
3268 edit
->macro_depth
--;
3271 edit
->force
|= REDRAW_PAGE
;
3272 for (; i
< n
; i
++) {
3273 edit_execute_cmd (edit
, macro
[i
].command
, macro
[i
].ch
);
3275 edit_update_screen (edit
);
3276 edit
->macro_depth
--;
3279 /* User edit menu, like user menu (F2) but only in editor. */
3281 user_menu (WEdit
* edit
)
3286 long start_mark
, end_mark
;
3287 char *block_file
= concat_dir_and_file (home_dir
, EDIT_BLOCK_FILE
);
3290 nomark
= eval_marks (edit
, &start_mark
, &end_mark
);
3291 if (!nomark
) /* remember marked or not */
3292 edit_save_block (edit
, block_file
, start_mark
, end_mark
);
3294 /* run shell scripts from menu */
3295 user_menu_cmd (edit
);
3297 if (mc_stat (block_file
, &status
) != 0 || !status
.st_size
) {
3298 /* no block messages */
3303 /* i.e. we have marked block */
3304 rc
= edit_block_delete_cmd (edit
);
3308 edit_insert_file (edit
, block_file
);
3311 /* truncate block file */
3312 if ((fd
= fopen (block_file
, "w"))) {
3316 edit_refresh_cmd (edit
);
3317 edit
->force
|= REDRAW_COMPLETELY
;
3320 g_free (block_file
);
3324 edit_stack_init (void)
3326 for (edit_stack_iterator
= 0;
3327 edit_stack_iterator
< MAX_HISTORY_MOVETO
;
3328 edit_stack_iterator
++ ) {
3329 edit_history_moveto
[edit_stack_iterator
].filename
= NULL
;
3330 edit_history_moveto
[edit_stack_iterator
].line
= -1;
3333 edit_stack_iterator
= 0;
3337 edit_stack_free (void)
3339 for (edit_stack_iterator
= 0;
3340 edit_stack_iterator
< MAX_HISTORY_MOVETO
;
3341 edit_stack_iterator
++)
3342 g_free (edit_history_moveto
[edit_stack_iterator
].filename
);