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_cursor_beyond_eol
= 1;
82 int option_line_state
= 0;
83 int option_line_state_width
= 0;
85 int option_edit_right_extreme
= 0;
86 int option_edit_left_extreme
= 0;
87 int option_edit_top_extreme
= 0;
88 int option_edit_bottom_extreme
= 0;
89 int enable_show_tabs_tws
= 1;
91 const char *option_whole_chars_search
= "0123456789abcdefghijklmnopqrstuvwxyz_";
92 char *option_backup_ext
= NULL
;
94 int edit_stack_iterator
= 0;
95 edit_stack_type edit_history_moveto
[MAX_HISTORY_MOVETO
];
96 /* magic sequense for say than block is vertical */
97 const char VERTICAL_MAGIC
[] = {'\1', '\1', '\1', '\1', '\n'};
100 * here's a quick sketch of the layout: (don't run this through indent.)
102 * (b1 is buffers1 and b2 is buffers2)
105 * \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
106 * ______________________________________|______________________________________
108 * ... | b2[2] | b2[1] | b2[0] | b1[0] | b1[1] | b1[2] | ...
109 * |-> |-> |-> |-> |-> |-> |
111 * _<------------------------->|<----------------->_
112 * WEdit->curs2 | WEdit->curs1
117 * file end|||file beginning
127 static void user_menu (WEdit
*edit
);
129 int edit_get_byte (WEdit
* edit
, long byte_index
)
132 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0)
135 if (byte_index
>= edit
->curs1
) {
136 p
= edit
->curs1
+ edit
->curs2
- byte_index
- 1;
137 return edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1];
139 return edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
][byte_index
& M_EDIT_BUF_SIZE
];
143 char *edit_get_byte_ptr (WEdit
* edit
, long byte_index
)
147 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0)
150 if (byte_index
>= edit
->curs1
) {
151 p
= edit
->curs1
+ edit
->curs2
- byte_index
- 1;
152 return (char *) (edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
]+(EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1));
154 return (char *) (edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
]+(byte_index
& M_EDIT_BUF_SIZE
));
158 char *edit_get_buf_ptr (WEdit
* edit
, long byte_index
)
162 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) ) {
166 if ( byte_index
< 0 ) {
170 if (byte_index
>= edit
->curs1
) {
171 p
= edit
->curs1
+ edit
->curs2
- 1;
172 return (char *) (edit
->buffers2
[p
>> S_EDIT_BUF_SIZE
] + (EDIT_BUF_SIZE
- (p
& M_EDIT_BUF_SIZE
) - 1));
174 return (char *) (edit
->buffers1
[byte_index
>> S_EDIT_BUF_SIZE
] + (0 & M_EDIT_BUF_SIZE
));
178 int edit_get_utf (WEdit
* edit
, long byte_index
, int *char_width
)
183 gchar
*next_ch
= NULL
;
186 if (byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0) {
192 str
= edit_get_byte_ptr (edit
, byte_index
);
193 res
= g_utf8_get_char_validated (str
, -1);
200 /* Calculate UTF-8 char width */
201 next_ch
= g_utf8_next_char(str
);
203 width
= next_ch
- str
;
213 int edit_get_prev_utf (WEdit
* edit
, long byte_index
, int *char_width
)
215 gchar
*str
, *buf
= NULL
;
218 gchar
*next_ch
= NULL
;
221 if ( byte_index
> 0 ) {
225 ch
= edit_get_utf (edit
, byte_index
, &width
);
231 if ( byte_index
>= (edit
->curs1
+ edit
->curs2
) || byte_index
< 0 ) {
236 str
= edit_get_byte_ptr (edit
, byte_index
);
237 buf
= edit_get_buf_ptr (edit
, byte_index
);
238 /* get prev utf8 char */
240 str
= g_utf8_find_prev_char (buf
, str
);
242 res
= g_utf8_get_char_validated (str
, -1);
248 /* Calculate UTF-8 char width */
249 next_ch
= g_utf8_next_char(str
);
251 width
= next_ch
- str
;
262 * Initialize the buffers for an empty files.
265 edit_init_buffers (WEdit
*edit
)
269 for (j
= 0; j
<= MAXBUFF
; j
++) {
270 edit
->buffers1
[j
] = NULL
;
271 edit
->buffers2
[j
] = NULL
;
276 edit
->buffers2
[0] = g_malloc (EDIT_BUF_SIZE
);
280 * Load file OR text into buffers. Set cursor to the beginning of file.
284 edit_load_file_fast (WEdit
*edit
, const char *filename
)
288 edit
->curs2
= edit
->last_byte
;
289 buf2
= edit
->curs2
>> S_EDIT_BUF_SIZE
;
291 if ((file
= mc_open (filename
, O_RDONLY
| O_BINARY
)) == -1) {
292 GString
*errmsg
= g_string_new(NULL
);
293 g_string_sprintf(errmsg
, _(" Cannot open %s for reading "), filename
);
294 edit_error_dialog (_("Error"), get_sys_error (errmsg
->str
));
295 g_string_free (errmsg
, TRUE
);
299 if (!edit
->buffers2
[buf2
])
300 edit
->buffers2
[buf2
] = g_malloc (EDIT_BUF_SIZE
);
303 (char *) edit
->buffers2
[buf2
] + EDIT_BUF_SIZE
-
304 (edit
->curs2
& M_EDIT_BUF_SIZE
),
305 edit
->curs2
& M_EDIT_BUF_SIZE
);
307 for (buf
= buf2
- 1; buf
>= 0; buf
--) {
308 /* edit->buffers2[0] is already allocated */
309 if (!edit
->buffers2
[buf
])
310 edit
->buffers2
[buf
] = g_malloc (EDIT_BUF_SIZE
);
311 mc_read (file
, (char *) edit
->buffers2
[buf
], EDIT_BUF_SIZE
);
318 /* detecting an error on save is easy: just check if every byte has been written. */
319 /* detecting an error on read, is not so easy 'cos there is not way to tell
320 whether you read everything or not. */
321 /* FIXME: add proper `triple_pipe_open' to read, write and check errors. */
322 static const struct edit_filters
{
323 const char *read
, *write
, *extension
;
325 { "xz -cd %s 2>&1", "xz > %s", ".xz" },
326 { "lzma -cd %s 2>&1", "lzma > %s", ".lzma" },
327 { "bzip2 -cd %s 2>&1", "bzip2 > %s", ".bz2" },
328 { "gzip -cd %s 2>&1", "gzip > %s", ".gz" },
329 { "gzip -cd %s 2>&1", "gzip > %s", ".Z" }
332 /* Return index of the filter or -1 is there is no appropriate filter */
333 static int edit_find_filter (const char *filename
)
338 l
= strlen (filename
);
339 for (i
= 0; i
< sizeof (all_filters
) / sizeof (all_filters
[0]); i
++) {
340 e
= strlen (all_filters
[i
].extension
);
342 if (!strcmp (all_filters
[i
].extension
, filename
+ l
- e
))
349 edit_get_filter (const char *filename
)
352 char *p
, *quoted_name
;
353 i
= edit_find_filter (filename
);
356 quoted_name
= name_quote (filename
, 0);
357 l
= str_term_width1 (quoted_name
);
358 p
= g_malloc (str_term_width1 (all_filters
[i
].read
) + l
+ 2);
359 sprintf (p
, all_filters
[i
].read
, quoted_name
);
360 g_free (quoted_name
);
365 edit_get_write_filter (const char *write_name
, const char *filename
)
369 i
= edit_find_filter (filename
);
372 writename
= name_quote (write_name
, 0);
373 l
= str_term_width1 (writename
);
374 p
= g_malloc (str_term_width1 (all_filters
[i
].write
) + l
+ 2);
375 sprintf (p
, all_filters
[i
].write
, writename
);
381 edit_insert_stream (WEdit
* edit
, FILE * f
)
385 while ((c
= fgetc (f
)) >= 0) {
386 edit_insert (edit
, c
);
392 long edit_write_stream (WEdit
* edit
, FILE * f
)
396 if (edit
->lb
== LB_ASIS
) {
397 for (i
= 0; i
< edit
->last_byte
; i
++)
398 if (fputc (edit_get_byte (edit
, i
), f
) < 0)
403 /* change line breaks */
404 for (i
= 0; i
< edit
->last_byte
; i
++) {
405 unsigned char c
= edit_get_byte (edit
, i
);
407 if (!(c
== '\n' || c
== '\r')) {
409 if (fputc (c
, f
) < 0)
411 } else { /* (c == '\n' || c == '\r') */
412 unsigned char c1
= edit_get_byte (edit
, i
+ 1); /* next char */
415 case LB_UNIX
: /* replace "\r\n" or '\r' to '\n' */
416 /* put one line break unconditionally */
417 if (fputc ('\n', f
) < 0)
420 i
++; /* 2 chars are processed */
422 if (c
== '\r' && c1
== '\n')
423 /* Windows line break; go to the next char */
426 if (c
== '\r' && c1
== '\r') {
427 /* two Macintosh line breaks; put second line break */
428 if (fputc ('\n', f
) < 0)
433 if (fputc (c1
, f
) < 0)
437 case LB_WIN
: /* replace '\n' or '\r' to "\r\n" */
438 /* put one line break unconditionally */
439 if (fputc ('\r', f
) < 0 || fputc ('\n', f
) < 0)
442 if (c
== '\r' && c1
== '\n')
443 /* Windows line break; go to the next char */
447 case LB_MAC
: /* replace "\r\n" or '\n' to '\r' */
448 /* put one line break unconditionally */
449 if (fputc ('\r', f
) < 0)
452 i
++; /* 2 chars are processed */
454 if (c
== '\r' && c1
== '\n')
455 /* Windows line break; go to the next char */
458 if (c
== '\n' && c1
== '\n') {
459 /* two Windows line breaks; put second line break */
460 if (fputc ('\r', f
) < 0)
465 if (fputc (c1
, f
) < 0)
468 case LB_ASIS
: /* default without changes */
474 return edit
->last_byte
;
477 #define TEMP_BUF_LEN 1024
479 /* inserts a file at the cursor, returns 1 on success */
481 edit_insert_file (WEdit
*edit
, const char *filename
)
484 if ((p
= edit_get_filter (filename
))) {
486 long current
= edit
->curs1
;
487 f
= (FILE *) popen (p
, "r");
489 edit_insert_stream (edit
, f
);
490 edit_cursor_move (edit
, current
- edit
->curs1
);
491 if (pclose (f
) > 0) {
492 GString
*errmsg
= g_string_new (NULL
);
493 g_string_sprintf (errmsg
, _(" Error reading from pipe: %s "), p
);
494 edit_error_dialog (_("Error"), errmsg
->str
);
495 g_string_free (errmsg
, TRUE
);
500 GString
*errmsg
= g_string_new (NULL
);
501 g_string_sprintf (errmsg
, _(" Cannot open pipe for reading: %s "), p
);
502 edit_error_dialog (_("Error"), errmsg
->str
);
503 g_string_free (errmsg
, TRUE
);
509 int i
, file
, blocklen
;
510 long current
= edit
->curs1
;
511 int vertical_insertion
= 0;
513 if ((file
= mc_open (filename
, O_RDONLY
| O_BINARY
)) == -1)
515 buf
= g_malloc (TEMP_BUF_LEN
);
516 blocklen
= mc_read (file
, buf
, sizeof(VERTICAL_MAGIC
));
518 /* if contain signature VERTICAL_MAGIC tnen it vertical block */
519 if ( memcmp(buf
, VERTICAL_MAGIC
, sizeof(VERTICAL_MAGIC
)) == 0 ) {
520 vertical_insertion
= 1;
522 mc_lseek (file
, 0, SEEK_SET
);
525 if (vertical_insertion
) {
526 blocklen
= edit_insert_column_of_text_from_file (edit
, file
);
528 while ((blocklen
= mc_read (file
, (char *) buf
, TEMP_BUF_LEN
)) > 0) {
529 for (i
= 0; i
< blocklen
; i
++)
530 edit_insert (edit
, buf
[i
]);
533 edit_cursor_move (edit
, current
- edit
->curs1
);
542 /* Open file and create it if necessary. Return 0 for success, 1 for error. */
544 check_file_access (WEdit
*edit
, const char *filename
, struct stat
*st
)
547 GString
*errmsg
= (GString
*) 0;
549 /* Try opening an existing file */
550 file
= mc_open (filename
, O_NONBLOCK
| O_RDONLY
| O_BINARY
, 0666);
554 * Try creating the file. O_EXCL prevents following broken links
555 * and opening existing files.
559 O_NONBLOCK
| O_RDONLY
| O_BINARY
| O_CREAT
| O_EXCL
,
562 g_string_sprintf (errmsg
= g_string_new (NULL
),
563 _(" Cannot open %s for reading "), filename
);
566 /* New file, delete it if it's not modified or saved */
567 edit
->delete_file
= 1;
571 /* Check what we have opened */
572 if (mc_fstat (file
, st
) < 0) {
573 g_string_sprintf (errmsg
= g_string_new (NULL
),
574 _(" Cannot get size/permissions for %s "), filename
);
578 /* We want to open regular files only */
579 if (!S_ISREG (st
->st_mode
)) {
580 g_string_sprintf (errmsg
= g_string_new (NULL
),
581 _(" %s is not a regular file "), filename
);
586 * Don't delete non-empty files.
587 * O_EXCL should prevent it, but let's be on the safe side.
589 if (st
->st_size
> 0) {
590 edit
->delete_file
= 0;
593 if (st
->st_size
>= SIZE_LIMIT
) {
594 g_string_sprintf (errmsg
= g_string_new (NULL
),
595 _(" File %s is too large "), filename
);
600 (void) mc_close (file
);
602 edit_error_dialog (_("Error"), errmsg
->str
);
603 g_string_free (errmsg
, TRUE
);
610 * Open the file and load it into the buffers, either directly or using
611 * a filter. Return 0 on success, 1 on error.
613 * Fast loading (edit_load_file_fast) is used when the file size is
614 * known. In this case the data is read into the buffers by blocks.
615 * If the file size is not known, the data is loaded byte by byte in
619 edit_load_file (WEdit
*edit
)
623 /* Cannot do fast load if a filter is used */
624 if (edit_find_filter (edit
->filename
) >= 0)
628 * VFS may report file size incorrectly, and slow load is not a big
629 * deal considering overhead in VFS.
631 if (!vfs_file_is_local (edit
->filename
))
635 * FIXME: line end translation should disable fast loading as well
636 * Consider doing fseek() to the end and ftell() for the real size.
639 if (*edit
->filename
) {
640 /* If we are dealing with a real file, check that it exists */
641 if (check_file_access (edit
, edit
->filename
, &edit
->stat1
))
644 /* nothing to load */
648 edit_init_buffers (edit
);
651 edit
->last_byte
= edit
->stat1
.st_size
;
652 edit_load_file_fast (edit
, edit
->filename
);
653 /* If fast load was used, the number of lines wasn't calculated */
654 edit
->total_lines
= edit_count_lines (edit
, 0, edit
->last_byte
);
657 const char *codepage_id
;
660 if (*edit
->filename
) {
661 edit
->stack_disable
= 1;
662 if (!edit_insert_file (edit
, edit
->filename
)) {
666 edit
->stack_disable
= 0;
670 codepage_id
= get_codepage_id( source_codepage
);
672 edit
->utf8
= str_isutf8 ( codepage_id
);
679 /* Restore saved cursor position in the file */
681 edit_load_position (WEdit
*edit
)
686 if (!edit
->filename
|| !*edit
->filename
)
689 filename
= vfs_canon (edit
->filename
);
690 load_file_position (filename
, &line
, &column
);
693 edit_move_to_line (edit
, line
- 1);
694 edit
->prev_col
= column
;
695 edit_move_to_prev_col (edit
, edit_bol (edit
, edit
->curs1
));
696 edit_move_display (edit
, line
- (edit
->num_widget_lines
/ 2));
699 /* Save cursor position in the file */
701 edit_save_position (WEdit
*edit
)
705 if (!edit
->filename
|| !*edit
->filename
)
708 filename
= vfs_canon (edit
->filename
);
709 save_file_position (filename
, edit
->curs_line
+ 1, edit
->curs_col
);
713 /* Clean the WEdit stricture except the widget part */
715 edit_purge_widget (WEdit
*edit
)
717 int len
= sizeof (WEdit
) - sizeof (Widget
);
718 char *start
= (char *) edit
+ sizeof (Widget
);
719 memset (start
, 0, len
);
720 edit
->macro_i
= -1; /* not recording a macro */
723 #define space_width 1
726 * Fill in the edit structure. Return NULL on failure. Pass edit as
727 * NULL to allocate a new structure.
729 * If line is 0, try to restore saved position. Otherwise put the
730 * cursor on that line and show it in the middle of the screen.
733 edit_init (WEdit
*edit
, int lines
, int columns
, const char *filename
,
737 option_auto_syntax
= 1; /* Resetting to auto on every invokation */
738 if ( option_line_state
) {
739 option_line_state_width
= LINE_STATE_WIDTH
;
741 option_line_state_width
= 0;
746 * Expand option_whole_chars_search by national letters using
750 static char option_whole_chars_search_buf
[256];
752 if (option_whole_chars_search_buf
!= option_whole_chars_search
) {
754 size_t len
= str_term_width1 (option_whole_chars_search
);
756 strcpy (option_whole_chars_search_buf
,
757 option_whole_chars_search
);
759 for (i
= 1; i
<= sizeof (option_whole_chars_search_buf
); i
++) {
760 if (g_ascii_islower ((gchar
) i
) && !strchr (option_whole_chars_search
, i
)) {
761 option_whole_chars_search_buf
[len
++] = i
;
765 option_whole_chars_search_buf
[len
] = 0;
766 option_whole_chars_search
= option_whole_chars_search_buf
;
768 #endif /* ENABLE_NLS */
769 edit
= g_malloc0 (sizeof (WEdit
));
773 edit_purge_widget (edit
);
774 edit
->num_widget_lines
= lines
;
776 edit
->num_widget_columns
= columns
;
777 edit
->stat1
.st_mode
= S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IROTH
;
778 edit
->stat1
.st_uid
= getuid ();
779 edit
->stat1
.st_gid
= getgid ();
780 edit
->stat1
.st_mtime
= 0;
782 edit
->force
|= REDRAW_PAGE
;
783 edit_set_filename (edit
, filename
);
784 edit
->stack_size
= START_STACK_SIZE
;
785 edit
->stack_size_mask
= START_STACK_SIZE
- 1;
786 edit
->undo_stack
= g_malloc ((edit
->stack_size
+ 10) * sizeof (long));
787 if (edit_load_file (edit
)) {
788 /* edit_load_file already gives an error message */
794 edit
->converter
= str_cnv_from_term
;
796 const char *cp_id
= NULL
;
797 cp_id
= get_codepage_id (source_codepage
>= 0 ?
798 source_codepage
: display_codepage
);
802 conv
= str_crt_conv_from (cp_id
);
803 if (conv
!= INVALID_CONV
) {
804 if (edit
->converter
!= str_cnv_from_term
)
805 str_close_conv (edit
->converter
);
806 edit
->converter
= conv
;
810 edit
->utf8
= str_isutf8 (cp_id
);
813 edit
->loading_done
= 1;
816 edit_load_syntax (edit
, 0, 0);
819 edit_get_syntax_color (edit
, -1, &color
);
822 /* load saved cursor position */
823 if ((line
== 0) && option_save_position
) {
824 edit_load_position (edit
);
828 edit_move_display (edit
, line
- 1);
829 edit_move_to_line (edit
, line
- 1);
832 edit_load_user_map(edit
);
837 /* Clear the edit struct, freeing everything in it. Return 1 on success */
839 edit_clean (WEdit
*edit
)
846 /* a stale lock, remove it */
848 edit
->locked
= edit_unlock_file (edit
->filename
);
850 /* save cursor position */
851 if (option_save_position
)
852 edit_save_position (edit
);
854 /* File specified on the mcedit command line and never saved */
855 if (edit
->delete_file
)
856 unlink (edit
->filename
);
858 edit_free_syntax_rules (edit
);
859 book_mark_flush (edit
, -1);
860 for (; j
<= MAXBUFF
; j
++) {
861 g_free (edit
->buffers1
[j
]);
862 g_free (edit
->buffers2
[j
]);
865 g_free (edit
->undo_stack
);
866 g_free (edit
->filename
);
871 mc_search_free(edit
->search
);
874 edit_purge_widget (edit
);
880 /* returns 1 on success */
881 int edit_renew (WEdit
* edit
)
883 int lines
= edit
->num_widget_lines
;
884 int columns
= edit
->num_widget_columns
;
888 if (!edit_init (edit
, lines
, columns
, "", 0))
894 * Load a new file into the editor. If it fails, preserve the old file.
895 * To do it, allocate a new widget, initialize it and, if the new file
896 * was loaded, copy the data to the old widget.
897 * Return 1 on success, 0 on failure.
900 edit_reload (WEdit
*edit
, const char *filename
)
903 int lines
= edit
->num_widget_lines
;
904 int columns
= edit
->num_widget_columns
;
906 e
= g_malloc0 (sizeof (WEdit
));
907 e
->widget
= edit
->widget
;
908 if (!edit_init (e
, lines
, columns
, filename
, 0)) {
913 memcpy (edit
, e
, sizeof (WEdit
));
919 * Load a new file into the editor and set line. If it fails, preserve the old file.
920 * To do it, allocate a new widget, initialize it and, if the new file
921 * was loaded, copy the data to the old widget.
922 * Return 1 on success, 0 on failure.
925 edit_reload_line (WEdit
*edit
, const char *filename
, long line
)
928 int lines
= edit
->num_widget_lines
;
929 int columns
= edit
->num_widget_columns
;
931 e
= g_malloc0 (sizeof (WEdit
));
932 e
->widget
= edit
->widget
;
933 if (!edit_init (e
, lines
, columns
, filename
, line
)) {
938 memcpy (edit
, e
, sizeof (WEdit
));
945 Recording stack for undo:
946 The following is an implementation of a compressed stack. Identical
947 pushes are recorded by a negative prefix indicating the number of times the
948 same char was pushed. This saves space for repeated curs-left or curs-right
965 If the stack long int is 0-255 it represents a normal insert (from a backspace),
966 256-512 is an insert ahead (from a delete), If it is betwen 600 and 700 it is one
967 of the cursor functions #define'd in edit-impl.h. 1000 through 700'000'000 is to
968 set edit->mark1 position. 700'000'000 through 1400'000'000 is to set edit->mark2
971 The only way the cursor moves or the buffer is changed is through the routines:
972 insert, backspace, insert_ahead, delete, and cursor_move.
973 These record the reverse undo movements onto the stack each time they are
976 Each key press results in a set of actions (insert; delete ...). So each time
977 a key is pressed the current position of start_display is pushed as
978 KEY_PRESS + start_display. Then for undoing, we pop until we get to a number
979 over KEY_PRESS. We then assign this number less KEY_PRESS to start_display. So undo
980 tracks scrolling and key actions exactly. (KEY_PRESS is about (2^31) * (2/3) = 1400'000'000)
984 void edit_push_action (WEdit
* edit
, long c
,...)
986 unsigned long sp
= edit
->stack_pointer
;
990 /* first enlarge the stack if necessary */
991 if (sp
> edit
->stack_size
- 10) { /* say */
992 if (option_max_undo
< 256)
993 option_max_undo
= 256;
994 if (edit
->stack_size
< (unsigned long) option_max_undo
) {
995 t
= g_realloc (edit
->undo_stack
, (edit
->stack_size
* 2 + 10) * sizeof (long));
997 edit
->undo_stack
= t
;
998 edit
->stack_size
<<= 1;
999 edit
->stack_size_mask
= edit
->stack_size
- 1;
1003 spm1
= (edit
->stack_pointer
- 1) & edit
->stack_size_mask
;
1004 if (edit
->stack_disable
)
1007 #ifdef FAST_MOVE_CURSOR
1008 if (c
== CURS_LEFT_LOTS
|| c
== CURS_RIGHT_LOTS
) {
1010 edit
->undo_stack
[sp
] = c
== CURS_LEFT_LOTS
? CURS_LEFT
: CURS_RIGHT
;
1011 edit
->stack_pointer
= (edit
->stack_pointer
+ 1) & edit
->stack_size_mask
;
1013 c
= -(va_arg (ap
, int));
1016 #endif /* ! FAST_MOVE_CURSOR */
1017 if (edit
->stack_bottom
!= sp
1018 && spm1
!= edit
->stack_bottom
1019 && ((sp
- 2) & edit
->stack_size_mask
) != edit
->stack_bottom
) {
1021 if (edit
->undo_stack
[spm1
] < 0) {
1022 d
= edit
->undo_stack
[(sp
- 2) & edit
->stack_size_mask
];
1024 if (edit
->undo_stack
[spm1
] > -1000000000) {
1025 if (c
< KEY_PRESS
) /* --> no need to push multiple do-nothings */
1026 edit
->undo_stack
[spm1
]--;
1030 /* #define NO_STACK_CURSMOVE_ANIHILATION */
1031 #ifndef NO_STACK_CURSMOVE_ANIHILATION
1032 else if ((c
== CURS_LEFT
&& d
== CURS_RIGHT
)
1033 || (c
== CURS_RIGHT
&& d
== CURS_LEFT
)) { /* a left then a right anihilate each other */
1034 if (edit
->undo_stack
[spm1
] == -2)
1035 edit
->stack_pointer
= spm1
;
1037 edit
->undo_stack
[spm1
]++;
1042 d
= edit
->undo_stack
[spm1
];
1045 return; /* --> no need to push multiple do-nothings */
1046 edit
->undo_stack
[sp
] = -2;
1049 #ifndef NO_STACK_CURSMOVE_ANIHILATION
1050 else if ((c
== CURS_LEFT
&& d
== CURS_RIGHT
)
1051 || (c
== CURS_RIGHT
&& d
== CURS_LEFT
)) { /* a left then a right anihilate each other */
1052 edit
->stack_pointer
= spm1
;
1058 edit
->undo_stack
[sp
] = c
;
1061 edit
->stack_pointer
= (edit
->stack_pointer
+ 1) & edit
->stack_size_mask
;
1063 /* if the sp wraps round and catches the stack_bottom then erase
1064 * the first set of actions on the stack to make space - by moving
1065 * stack_bottom forward one "key press" */
1066 c
= (edit
->stack_pointer
+ 2) & edit
->stack_size_mask
;
1067 if ((unsigned long) c
== edit
->stack_bottom
||
1068 (((unsigned long) c
+ 1) & edit
->stack_size_mask
) == edit
->stack_bottom
)
1070 edit
->stack_bottom
= (edit
->stack_bottom
+ 1) & edit
->stack_size_mask
;
1071 } while (edit
->undo_stack
[edit
->stack_bottom
] < KEY_PRESS
&& edit
->stack_bottom
!= edit
->stack_pointer
);
1073 /*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: */
1074 if (edit
->stack_pointer
!= edit
->stack_bottom
&& edit
->undo_stack
[edit
->stack_bottom
] < KEY_PRESS
)
1075 edit
->stack_bottom
= edit
->stack_pointer
= 0;
1079 TODO: if the user undos until the stack bottom, and the stack has not wrapped,
1080 then the file should be as it was when he loaded up. Then set edit->modified to 0.
1083 pop_action (WEdit
* edit
)
1086 unsigned long sp
= edit
->stack_pointer
;
1087 if (sp
== edit
->stack_bottom
) {
1088 return STACK_BOTTOM
;
1090 sp
= (sp
- 1) & edit
->stack_size_mask
;
1091 if ((c
= edit
->undo_stack
[sp
]) >= 0) {
1092 /* edit->undo_stack[sp] = '@'; */
1093 edit
->stack_pointer
= (edit
->stack_pointer
- 1) & edit
->stack_size_mask
;
1096 if (sp
== edit
->stack_bottom
) {
1097 return STACK_BOTTOM
;
1099 c
= edit
->undo_stack
[(sp
- 1) & edit
->stack_size_mask
];
1100 if (edit
->undo_stack
[sp
] == -2) {
1101 /* edit->undo_stack[sp] = '@'; */
1102 edit
->stack_pointer
= sp
;
1104 edit
->undo_stack
[sp
]++;
1109 /* is called whenever a modification is made by one of the four routines below */
1110 static void edit_modification (WEdit
* edit
)
1112 edit
->caches_valid
= 0;
1113 edit
->screen_modified
= 1;
1115 /* raise lock when file modified */
1116 if (!edit
->modified
&& !edit
->delete_file
)
1117 edit
->locked
= edit_lock_file (edit
->filename
);
1122 Basic low level single character buffer alterations and movements at the cursor.
1123 Returns char passed over, inserted or removed.
1127 edit_insert (WEdit
*edit
, int c
)
1129 /* check if file has grown to large */
1130 if (edit
->last_byte
>= SIZE_LIMIT
)
1133 /* first we must update the position of the display window */
1134 if (edit
->curs1
< edit
->start_display
) {
1135 edit
->start_display
++;
1140 /* Mark file as modified, unless the file hasn't been fully loaded */
1141 if (edit
->loading_done
) {
1142 edit_modification (edit
);
1145 /* now we must update some info on the file and check if a redraw is required */
1147 if (edit
->book_mark
)
1148 book_mark_inc (edit
, edit
->curs_line
);
1150 edit
->total_lines
++;
1151 edit
->force
|= REDRAW_LINE_ABOVE
| REDRAW_AFTER_CURSOR
;
1154 /* save the reverse command onto the undo stack */
1155 edit_push_action (edit
, BACKSPACE
);
1157 /* update markers */
1158 edit
->mark1
+= (edit
->mark1
> edit
->curs1
);
1159 edit
->mark2
+= (edit
->mark2
> edit
->curs1
);
1160 edit
->last_get_rule
+= (edit
->last_get_rule
> edit
->curs1
);
1162 /* add a new buffer if we've reached the end of the last one */
1163 if (!(edit
->curs1
& M_EDIT_BUF_SIZE
))
1164 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] =
1165 g_malloc (EDIT_BUF_SIZE
);
1167 /* perform the insertion */
1168 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
][edit
->
1169 curs1
& M_EDIT_BUF_SIZE
]
1170 = (unsigned char) c
;
1172 /* update file length */
1175 /* update cursor position */
1180 edit_insert_over (WEdit
* edit
)
1184 for ( i
= 0; i
< edit
->over_col
; i
++ ) {
1185 edit_insert (edit
, ' ');
1190 /* same as edit_insert and move left */
1191 void edit_insert_ahead (WEdit
* edit
, int c
)
1193 if (edit
->last_byte
>= SIZE_LIMIT
)
1195 if (edit
->curs1
< edit
->start_display
) {
1196 edit
->start_display
++;
1200 edit_modification (edit
);
1202 if (edit
->book_mark
)
1203 book_mark_inc (edit
, edit
->curs_line
);
1204 edit
->total_lines
++;
1205 edit
->force
|= REDRAW_AFTER_CURSOR
;
1207 edit_push_action (edit
, DELCHAR
);
1209 edit
->mark1
+= (edit
->mark1
>= edit
->curs1
);
1210 edit
->mark2
+= (edit
->mark2
>= edit
->curs1
);
1211 edit
->last_get_rule
+= (edit
->last_get_rule
>= edit
->curs1
);
1213 if (!((edit
->curs2
+ 1) & M_EDIT_BUF_SIZE
))
1214 edit
->buffers2
[(edit
->curs2
+ 1) >> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1215 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
) - 1] = c
;
1222 int edit_delete (WEdit
* edit
, const int byte_delete
)
1231 edit
->mark1
-= (edit
->mark1
> edit
->curs1
);
1232 edit
->mark2
-= (edit
->mark2
> edit
->curs1
);
1233 edit
->last_get_rule
-= (edit
->last_get_rule
> edit
->curs1
);
1236 /* if byte_delete = 1 then delete only one byte not multibyte char*/
1237 if ( edit
->utf8
&& byte_delete
== 0 ) {
1238 edit_get_utf (edit
, edit
->curs1
, &cw
);
1242 for ( i
= 1; i
<= cw
; i
++ ) {
1243 p
= edit
->buffers2
[(edit
->curs2
- 1) >> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- ((edit
->curs2
- 1) & M_EDIT_BUF_SIZE
) - 1];
1245 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1246 g_free (edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
]);
1247 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = NULL
;
1251 edit_push_action (edit
, p
+ 256);
1254 edit_modification (edit
);
1256 if (edit
->book_mark
)
1257 book_mark_dec (edit
, edit
->curs_line
);
1258 edit
->total_lines
--;
1259 edit
->force
|= REDRAW_AFTER_CURSOR
;
1261 if (edit
->curs1
< edit
->start_display
) {
1262 edit
->start_display
--;
1272 edit_backspace (WEdit
* edit
, const int byte_delete
)
1281 edit
->mark1
-= (edit
->mark1
>= edit
->curs1
);
1282 edit
->mark2
-= (edit
->mark2
>= edit
->curs1
);
1283 edit
->last_get_rule
-= (edit
->last_get_rule
>= edit
->curs1
);
1286 if ( edit
->utf8
&& byte_delete
== 0 ) {
1287 edit_get_prev_utf (edit
, edit
->curs1
, &cw
);
1291 for ( i
= 1; i
<= cw
; i
++ ) {
1292 p
= *(edit
->buffers1
[(edit
->curs1
- 1) >> S_EDIT_BUF_SIZE
] + ((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
));
1293 if (!((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
)) {
1294 g_free (edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
]);
1295 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = NULL
;
1299 edit_push_action (edit
, p
);
1301 edit_modification (edit
);
1303 if (edit
->book_mark
)
1304 book_mark_dec (edit
, edit
->curs_line
);
1306 edit
->total_lines
--;
1307 edit
->force
|= REDRAW_AFTER_CURSOR
;
1310 if (edit
->curs1
< edit
->start_display
) {
1311 edit
->start_display
--;
1319 #ifdef FAST_MOVE_CURSOR
1321 static void memqcpy (WEdit
* edit
, unsigned char *dest
, unsigned char *src
, int n
)
1324 while ((next
= (unsigned long) memccpy (dest
, src
, '\n', n
))) {
1326 next
-= (unsigned long) dest
;
1334 edit_move_backward_lots (WEdit
*edit
, long increment
)
1339 if (increment
> edit
->curs1
)
1340 increment
= edit
->curs1
;
1343 edit_push_action (edit
, CURS_RIGHT_LOTS
, increment
);
1345 t
= r
= EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
);
1348 s
= edit
->curs1
& M_EDIT_BUF_SIZE
;
1353 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
- r
,
1354 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] + s
- r
,
1359 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
-
1360 s
, edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
], s
);
1361 p
= edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
];
1362 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = 0;
1365 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] + t
- r
,
1366 edit
->buffers1
[(edit
->curs1
>> S_EDIT_BUF_SIZE
) - 1] +
1367 EDIT_BUF_SIZE
- (r
- s
), r
- s
);
1372 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1374 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = p
;
1376 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] =
1377 g_malloc (EDIT_BUF_SIZE
);
1382 s
= edit
->curs1
& M_EDIT_BUF_SIZE
;
1392 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] +
1394 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] + s
- t
,
1398 p
= edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
];
1399 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = 0;
1402 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] +
1404 edit
->buffers1
[(edit
->curs1
>> S_EDIT_BUF_SIZE
) - 1] +
1405 EDIT_BUF_SIZE
- (r
- s
), r
- s
);
1410 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1412 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = p
;
1414 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] =
1415 g_malloc (EDIT_BUF_SIZE
);
1420 return edit_get_byte (edit
, edit
->curs1
);
1423 #endif /* ! FAST_MOVE_CURSOR */
1425 /* moves the cursor right or left: increment positive or negative respectively */
1426 void edit_cursor_move (WEdit
* edit
, long increment
)
1428 /* this is the same as a combination of two of the above routines, with only one push onto the undo stack */
1431 #ifdef FAST_MOVE_CURSOR
1432 if (increment
< -256) {
1433 edit
->force
|= REDRAW_PAGE
;
1434 edit_move_backward_lots (edit
, -increment
);
1437 #endif /* ! FAST_MOVE_CURSOR */
1439 if (increment
< 0) {
1440 for (; increment
< 0; increment
++) {
1444 edit_push_action (edit
, CURS_RIGHT
);
1446 c
= edit_get_byte (edit
, edit
->curs1
- 1);
1447 if (!((edit
->curs2
+ 1) & M_EDIT_BUF_SIZE
))
1448 edit
->buffers2
[(edit
->curs2
+ 1) >> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1449 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- (edit
->curs2
& M_EDIT_BUF_SIZE
) - 1] = c
;
1451 c
= edit
->buffers1
[(edit
->curs1
- 1) >> S_EDIT_BUF_SIZE
][(edit
->curs1
- 1) & M_EDIT_BUF_SIZE
];
1452 if (!((edit
->curs1
- 1) & M_EDIT_BUF_SIZE
)) {
1453 g_free (edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
]);
1454 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = NULL
;
1459 edit
->force
|= REDRAW_LINE_BELOW
;
1463 } else if (increment
> 0) {
1464 for (; increment
> 0; increment
--) {
1468 edit_push_action (edit
, CURS_LEFT
);
1470 c
= edit_get_byte (edit
, edit
->curs1
);
1471 if (!(edit
->curs1
& M_EDIT_BUF_SIZE
))
1472 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
] = g_malloc (EDIT_BUF_SIZE
);
1473 edit
->buffers1
[edit
->curs1
>> S_EDIT_BUF_SIZE
][edit
->curs1
& M_EDIT_BUF_SIZE
] = c
;
1475 c
= edit
->buffers2
[(edit
->curs2
- 1) >> S_EDIT_BUF_SIZE
][EDIT_BUF_SIZE
- ((edit
->curs2
- 1) & M_EDIT_BUF_SIZE
) - 1];
1476 if (!(edit
->curs2
& M_EDIT_BUF_SIZE
)) {
1477 g_free (edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
]);
1478 edit
->buffers2
[edit
->curs2
>> S_EDIT_BUF_SIZE
] = 0;
1483 edit
->force
|= REDRAW_LINE_ABOVE
;
1489 /* These functions return positions relative to lines */
1491 /* returns index of last char on line + 1 */
1492 long edit_eol (WEdit
* edit
, long current
)
1494 if (current
< edit
->last_byte
) {
1496 if (edit_get_byte (edit
, current
) == '\n')
1499 return edit
->last_byte
;
1503 /* returns index of first char on line */
1504 long edit_bol (WEdit
* edit
, long current
)
1508 if (edit_get_byte (edit
, current
- 1) == '\n')
1516 int edit_count_lines (WEdit
* edit
, long current
, int upto
)
1519 if (upto
> edit
->last_byte
)
1520 upto
= edit
->last_byte
;
1523 while (current
< upto
)
1524 if (edit_get_byte (edit
, current
++) == '\n')
1530 /* If lines is zero this returns the count of lines from current to upto. */
1531 /* If upto is zero returns index of lines forward current. */
1532 long edit_move_forward (WEdit
* edit
, long current
, int lines
, long upto
)
1535 return edit_count_lines (edit
, current
, upto
);
1541 next
= edit_eol (edit
, current
) + 1;
1542 if (next
> edit
->last_byte
)
1552 /* Returns offset of 'lines' lines up from current */
1553 long edit_move_backward (WEdit
* edit
, long current
, int lines
)
1557 current
= edit_bol (edit
, current
);
1558 while((lines
--) && current
!= 0)
1559 current
= edit_bol (edit
, current
- 1);
1563 /* If cols is zero this returns the count of columns from current to upto. */
1564 /* If upto is zero returns index of cols across from current. */
1565 long edit_move_forward3 (WEdit
* edit
, long current
, int cols
, long upto
)
1577 q
= edit
->last_byte
+ 2;
1578 for (col
= 0, p
= current
; p
< q
; p
++) {
1591 if ( !edit
->utf8
) {
1593 c
= edit_get_byte (edit
, p
);
1597 c
= edit_get_byte (edit
, p
);
1598 utf_ch
= edit_get_utf (edit
, p
, &cw
);
1600 if ( utf8_display
) {
1601 if ( edit
->utf8
&& g_unichar_iswide(utf_ch
) )
1606 col
+= TAB_SIZE
- col
% TAB_SIZE
;
1607 else if (c
== '\n') {
1612 } else if (c
< 32 || c
== 127)
1613 col
+= 2; /* Caret notation for control characters */
1624 /* returns the current column position of the cursor */
1625 int edit_get_col (WEdit
* edit
)
1627 return edit_move_forward3 (edit
, edit_bol (edit
, edit
->curs1
), 0, edit
->curs1
);
1631 /* Scrolling functions */
1633 void edit_update_curs_row (WEdit
* edit
)
1635 edit
->curs_row
= edit
->curs_line
- edit
->start_line
;
1638 void edit_update_curs_col (WEdit
* edit
)
1640 edit
->curs_col
= edit_move_forward3(edit
, edit_bol(edit
, edit
->curs1
), 0, edit
->curs1
);
1644 edit_get_curs_col (const WEdit
*edit
)
1646 return edit
->curs_col
;
1649 /*moves the display start position up by i lines */
1650 void edit_scroll_upward (WEdit
* edit
, unsigned long i
)
1652 unsigned long lines_above
= edit
->start_line
;
1653 if (i
> lines_above
)
1656 edit
->start_line
-= i
;
1657 edit
->start_display
= edit_move_backward (edit
, edit
->start_display
, i
);
1658 edit
->force
|= REDRAW_PAGE
;
1659 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1661 edit_update_curs_row (edit
);
1665 /* returns 1 if could scroll, 0 otherwise */
1666 void edit_scroll_downward (WEdit
* edit
, int i
)
1669 lines_below
= edit
->total_lines
- edit
->start_line
- (edit
->num_widget_lines
- 1);
1670 if (lines_below
> 0) {
1671 if (i
> lines_below
)
1673 edit
->start_line
+= i
;
1674 edit
->start_display
= edit_move_forward (edit
, edit
->start_display
, i
, 0);
1675 edit
->force
|= REDRAW_PAGE
;
1676 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1678 edit_update_curs_row (edit
);
1681 void edit_scroll_right (WEdit
* edit
, int i
)
1683 edit
->force
|= REDRAW_PAGE
;
1684 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1685 edit
->start_col
-= i
;
1688 void edit_scroll_left (WEdit
* edit
, int i
)
1690 if (edit
->start_col
) {
1691 edit
->start_col
+= i
;
1692 if (edit
->start_col
> 0)
1693 edit
->start_col
= 0;
1694 edit
->force
|= REDRAW_PAGE
;
1695 edit
->force
&= (0xfff - REDRAW_CHAR_ONLY
);
1699 /* high level cursor movement commands */
1701 static int is_in_indent (WEdit
*edit
)
1703 long p
= edit_bol (edit
, edit
->curs1
);
1704 while (p
< edit
->curs1
)
1705 if (!strchr (" \t", edit_get_byte (edit
, p
++)))
1710 static int left_of_four_spaces (WEdit
*edit
);
1713 edit_move_to_prev_col (WEdit
* edit
, long p
)
1715 int prev
= edit
->prev_col
;
1716 int over
= edit
->over_col
;
1718 edit_cursor_move (edit
, edit_move_forward3 (edit
, p
, prev
+ edit
->over_col
, 0) - edit
->curs1
);
1720 if (option_cursor_beyond_eol
) {
1721 long line_len
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->curs1
), 0, edit_eol(edit
, edit
->curs1
));
1723 if (line_len
< prev
+ edit
->over_col
) {
1724 edit
->over_col
= prev
+ over
- line_len
;
1725 edit
->prev_col
= line_len
;
1726 edit
->curs_col
= line_len
;
1728 edit
->curs_col
= prev
+ over
;
1729 edit
->prev_col
= edit
->curs_col
;
1734 if (is_in_indent (edit
) && option_fake_half_tabs
) {
1735 edit_update_curs_col (edit
);
1737 if (edit
->curs_col
% (HALF_TAB_SIZE
* space_width
)) {
1738 int q
= edit
->curs_col
;
1739 edit
->curs_col
-= (edit
->curs_col
% (HALF_TAB_SIZE
* space_width
));
1740 p
= edit_bol (edit
, edit
->curs1
);
1741 edit_cursor_move (edit
, edit_move_forward3 (edit
, p
, edit
->curs_col
, 0) - edit
->curs1
);
1742 if (!left_of_four_spaces (edit
))
1743 edit_cursor_move (edit
, edit_move_forward3 (edit
, p
, q
, 0) - edit
->curs1
);
1750 void edit_move_up (WEdit
* edit
, unsigned long i
, int scroll
)
1752 unsigned long p
, l
= edit
->curs_line
;
1758 edit
->force
|= REDRAW_PAGE
;
1760 edit_scroll_upward (edit
, i
);
1762 p
= edit_bol (edit
, edit
->curs1
);
1763 edit_cursor_move (edit
, (p
= edit_move_backward (edit
, p
, i
)) - edit
->curs1
);
1764 edit_move_to_prev_col (edit
, p
);
1766 edit
->search_start
= edit
->curs1
;
1767 edit
->found_len
= 0;
1772 is_blank (WEdit
*edit
, long offset
)
1776 s
= edit_bol (edit
, offset
);
1777 f
= edit_eol (edit
, offset
) - 1;
1779 c
= edit_get_byte (edit
, s
++);
1787 /* returns the offset of line i */
1789 edit_find_line (WEdit
*edit
, int line
)
1793 if (!edit
->caches_valid
) {
1794 for (i
= 0; i
< N_LINE_CACHES
; i
++)
1795 edit
->line_numbers
[i
] = edit
->line_offsets
[i
] = 0;
1796 /* three offsets that we *know* are line 0 at 0 and these two: */
1797 edit
->line_numbers
[1] = edit
->curs_line
;
1798 edit
->line_offsets
[1] = edit_bol (edit
, edit
->curs1
);
1799 edit
->line_numbers
[2] = edit
->total_lines
;
1800 edit
->line_offsets
[2] = edit_bol (edit
, edit
->last_byte
);
1801 edit
->caches_valid
= 1;
1803 if (line
>= edit
->total_lines
)
1804 return edit
->line_offsets
[2];
1807 /* find the closest known point */
1808 for (i
= 0; i
< N_LINE_CACHES
; i
++) {
1810 n
= abs (edit
->line_numbers
[i
] - line
);
1817 return edit
->line_offsets
[j
]; /* know the offset exactly */
1818 if (m
== 1 && j
>= 3)
1819 i
= j
; /* one line different - caller might be looping, so stay in this cache */
1821 i
= 3 + (rand () % (N_LINE_CACHES
- 3));
1822 if (line
> edit
->line_numbers
[j
])
1823 edit
->line_offsets
[i
] = edit_move_forward (edit
, edit
->line_offsets
[j
], line
- edit
->line_numbers
[j
], 0);
1825 edit
->line_offsets
[i
] = edit_move_backward (edit
, edit
->line_offsets
[j
], edit
->line_numbers
[j
] - line
);
1826 edit
->line_numbers
[i
] = line
;
1827 return edit
->line_offsets
[i
];
1830 int line_is_blank (WEdit
* edit
, long line
)
1832 return is_blank (edit
, edit_find_line (edit
, line
));
1835 /* moves up until a blank line is reached, or until just
1836 before a non-blank line is reached */
1837 static void edit_move_up_paragraph (WEdit
* edit
, int scroll
)
1840 if (edit
->curs_line
<= 1) {
1843 if (line_is_blank (edit
, edit
->curs_line
)) {
1844 if (line_is_blank (edit
, edit
->curs_line
- 1)) {
1845 for (i
= edit
->curs_line
- 1; i
; i
--)
1846 if (!line_is_blank (edit
, i
)) {
1851 for (i
= edit
->curs_line
- 1; i
; i
--)
1852 if (line_is_blank (edit
, i
))
1856 for (i
= edit
->curs_line
- 1; i
; i
--)
1857 if (line_is_blank (edit
, i
))
1861 edit_move_up (edit
, edit
->curs_line
- i
, scroll
);
1865 void edit_move_down (WEdit
* edit
, int i
, int scroll
)
1867 long p
, l
= edit
->total_lines
- edit
->curs_line
;
1873 edit
->force
|= REDRAW_PAGE
;
1875 edit_scroll_downward (edit
, i
);
1876 p
= edit_bol (edit
, edit
->curs1
);
1877 edit_cursor_move (edit
, (p
= edit_move_forward (edit
, p
, i
, 0)) - edit
->curs1
);
1878 edit_move_to_prev_col (edit
, p
);
1880 edit
->search_start
= edit
->curs1
;
1881 edit
->found_len
= 0;
1885 /* moves down until a blank line is reached, or until just
1886 before a non-blank line is reached */
1887 static void edit_move_down_paragraph (WEdit
* edit
, int scroll
)
1890 if (edit
->curs_line
>= edit
->total_lines
- 1) {
1891 i
= edit
->total_lines
;
1893 if (line_is_blank (edit
, edit
->curs_line
)) {
1894 if (line_is_blank (edit
, edit
->curs_line
+ 1)) {
1895 for (i
= edit
->curs_line
+ 1; i
; i
++)
1896 if (!line_is_blank (edit
, i
) || i
> edit
->total_lines
) {
1901 for (i
= edit
->curs_line
+ 1; i
; i
++)
1902 if (line_is_blank (edit
, i
) || i
>= edit
->total_lines
)
1906 for (i
= edit
->curs_line
+ 1; i
; i
++)
1907 if (line_is_blank (edit
, i
) || i
>= edit
->total_lines
)
1911 edit_move_down (edit
, i
- edit
->curs_line
, scroll
);
1914 static void edit_begin_page (WEdit
*edit
)
1916 edit_update_curs_row (edit
);
1917 edit_move_up (edit
, edit
->curs_row
, 0);
1920 static void edit_end_page (WEdit
*edit
)
1922 edit_update_curs_row (edit
);
1923 edit_move_down (edit
, edit
->num_widget_lines
- edit
->curs_row
- 1, 0);
1927 /* goto beginning of text */
1928 static void edit_move_to_top (WEdit
* edit
)
1930 if (edit
->curs_line
) {
1931 edit_cursor_move (edit
, -edit
->curs1
);
1932 edit_move_to_prev_col (edit
, 0);
1933 edit
->force
|= REDRAW_PAGE
;
1934 edit
->search_start
= 0;
1935 edit_update_curs_row(edit
);
1940 /* goto end of text */
1941 static void edit_move_to_bottom (WEdit
* edit
)
1943 if (edit
->curs_line
< edit
->total_lines
) {
1944 edit_cursor_move (edit
, edit
->curs2
);
1945 edit
->start_display
= edit
->last_byte
;
1946 edit
->start_line
= edit
->total_lines
;
1947 edit_update_curs_row(edit
);
1948 edit_scroll_upward (edit
, edit
->num_widget_lines
- 1);
1949 edit
->force
|= REDRAW_PAGE
;
1953 /* goto beginning of line */
1954 static void edit_cursor_to_bol (WEdit
* edit
)
1956 edit_cursor_move (edit
, edit_bol (edit
, edit
->curs1
) - edit
->curs1
);
1957 edit
->search_start
= edit
->curs1
;
1958 edit
->prev_col
= edit_get_col (edit
);
1962 /* goto end of line */
1963 static void edit_cursor_to_eol (WEdit
* edit
)
1965 edit_cursor_move (edit
, edit_eol (edit
, edit
->curs1
) - edit
->curs1
);
1966 edit
->search_start
= edit
->curs1
;
1967 edit
->prev_col
= edit_get_col (edit
);
1971 /* move cursor to line 'line' */
1972 void edit_move_to_line (WEdit
* e
, long line
)
1974 if(line
< e
->curs_line
)
1975 edit_move_up (e
, e
->curs_line
- line
, 0);
1977 edit_move_down (e
, line
- e
->curs_line
, 0);
1978 edit_scroll_screen_over_cursor (e
);
1981 /* scroll window so that first visible line is 'line' */
1982 void edit_move_display (WEdit
* e
, long line
)
1984 if(line
< e
->start_line
)
1985 edit_scroll_upward (e
, e
->start_line
- line
);
1987 edit_scroll_downward (e
, line
- e
->start_line
);
1990 /* save markers onto undo stack */
1991 void edit_push_markers (WEdit
* edit
)
1993 edit_push_action (edit
, MARK_1
+ edit
->mark1
);
1994 edit_push_action (edit
, MARK_2
+ edit
->mark2
);
1997 void edit_set_markers (WEdit
* edit
, long m1
, long m2
, int c1
, int c2
)
2006 /* highlight marker toggle */
2007 void edit_mark_cmd (WEdit
* edit
, int unmark
)
2009 edit_push_markers (edit
);
2011 edit_set_markers (edit
, 0, 0, 0, 0);
2012 edit
->force
|= REDRAW_PAGE
;
2014 if (edit
->mark2
>= 0) {
2015 edit_set_markers (edit
, edit
->curs1
, -1, edit
->curs_col
+edit
->over_col
, edit
->curs_col
+edit
->over_col
);
2016 edit
->force
|= REDRAW_PAGE
;
2018 edit_set_markers (edit
, edit
->mark1
, edit
->curs1
, edit
->column1
, edit
->curs_col
+edit
->over_col
);
2022 static unsigned long
2027 const char option_chars_move_whole_word
[] =
2028 "!=&|<>^~ !:;, !'!`!.?!\"!( !) !Aa0 !+-*/= |<> ![ !] !\\#! ";
2033 if (*option_chars_move_whole_word
== '!')
2035 return 0x80000000UL
;
2037 if (g_ascii_isupper ((gchar
) c
))
2039 else if (g_ascii_islower ((gchar
) c
))
2041 else if (g_ascii_isalpha (c
))
2043 else if (isdigit (c
))
2045 else if (isspace (c
))
2047 q
= strchr (option_chars_move_whole_word
, c
);
2049 return 0xFFFFFFFFUL
;
2051 for (x
= 1, p
= option_chars_move_whole_word
; p
< q
; p
++)
2055 } while ((q
= strchr (q
+ 1, c
)));
2060 edit_left_word_move (WEdit
*edit
, int s
)
2064 edit_cursor_move (edit
, -1);
2067 c1
= edit_get_byte (edit
, edit
->curs1
- 1);
2068 c2
= edit_get_byte (edit
, edit
->curs1
);
2069 if (!(my_type_of (c1
) & my_type_of (c2
)))
2071 if (isspace (c1
) && !isspace (c2
))
2074 if (!isspace (c1
) && isspace (c2
))
2079 static void edit_left_word_move_cmd (WEdit
* edit
)
2081 edit_left_word_move (edit
, 0);
2082 edit
->force
|= REDRAW_PAGE
;
2086 edit_right_word_move (WEdit
*edit
, int s
)
2090 edit_cursor_move (edit
, 1);
2091 if (edit
->curs1
>= edit
->last_byte
)
2093 c1
= edit_get_byte (edit
, edit
->curs1
- 1);
2094 c2
= edit_get_byte (edit
, edit
->curs1
);
2095 if (!(my_type_of (c1
) & my_type_of (c2
)))
2097 if (isspace (c1
) && !isspace (c2
))
2100 if (!isspace (c1
) && isspace (c2
))
2105 static void edit_right_word_move_cmd (WEdit
* edit
)
2107 edit_right_word_move (edit
, 0);
2108 edit
->force
|= REDRAW_PAGE
;
2111 static void edit_right_char_move_cmd (WEdit
* edit
)
2116 c
= edit_get_utf (edit
, edit
->curs1
, &cw
);
2120 c
= edit_get_byte (edit
, edit
->curs1
);
2122 if (option_cursor_beyond_eol
&& c
== '\n') {
2125 edit_cursor_move (edit
, cw
);
2129 static void edit_left_char_move_cmd (WEdit
* edit
)
2133 edit_get_prev_utf (edit
, edit
->curs1
, &cw
);
2137 if (option_cursor_beyond_eol
&& edit
->over_col
> 0) {
2140 edit_cursor_move (edit
, -cw
);
2145 static void edit_right_delete_word (WEdit
* edit
)
2149 if (edit
->curs1
>= edit
->last_byte
)
2151 c1
= edit_delete (edit
, 1);
2152 c2
= edit_get_byte (edit
, edit
->curs1
);
2153 if ((isspace (c1
) == 0) != (isspace (c2
) == 0))
2155 if (!(my_type_of (c1
) & my_type_of (c2
)))
2160 static void edit_left_delete_word (WEdit
* edit
)
2164 if (edit
->curs1
<= 0)
2166 c1
= edit_backspace (edit
, 1);
2167 c2
= edit_get_byte (edit
, edit
->curs1
- 1);
2168 if ((isspace (c1
) == 0) != (isspace (c2
) == 0))
2170 if (!(my_type_of (c1
) & my_type_of (c2
)))
2176 the start column position is not recorded, and hence does not
2177 undo as it happed. But who would notice.
2180 edit_do_undo (WEdit
* edit
)
2185 edit
->stack_disable
= 1; /* don't record undo's onto undo stack! */
2187 while ((ac
= pop_action (edit
)) < KEY_PRESS
) {
2192 edit_cursor_move (edit
, 1);
2195 edit_cursor_move (edit
, -1);
2198 edit_backspace (edit
, 1);
2201 edit_delete (edit
, 1);
2204 column_highlighting
= 1;
2207 column_highlighting
= 0;
2210 if (ac
>= 256 && ac
< 512)
2211 edit_insert_ahead (edit
, ac
- 256);
2212 if (ac
>= 0 && ac
< 256)
2213 edit_insert (edit
, ac
);
2215 if (ac
>= MARK_1
- 2 && ac
< MARK_2
- 2) {
2216 edit
->mark1
= ac
- MARK_1
;
2217 edit
->column1
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->mark1
), 0, edit
->mark1
);
2218 } else if (ac
>= MARK_2
- 2 && ac
< KEY_PRESS
) {
2219 edit
->mark2
= ac
- MARK_2
;
2220 edit
->column2
= edit_move_forward3 (edit
, edit_bol (edit
, edit
->mark2
), 0, edit
->mark2
);
2223 edit
->force
|= REDRAW_PAGE
; /* more than one pop usually means something big */
2226 if (edit
->start_display
> ac
- KEY_PRESS
) {
2227 edit
->start_line
-= edit_count_lines (edit
, ac
- KEY_PRESS
, edit
->start_display
);
2228 edit
->force
|= REDRAW_PAGE
;
2229 } else if (edit
->start_display
< ac
- KEY_PRESS
) {
2230 edit
->start_line
+= edit_count_lines (edit
, edit
->start_display
, ac
- KEY_PRESS
);
2231 edit
->force
|= REDRAW_PAGE
;
2233 edit
->start_display
= ac
- KEY_PRESS
; /* see push and pop above */
2234 edit_update_curs_row (edit
);
2237 edit
->stack_disable
= 0;
2240 static void edit_delete_to_line_end (WEdit
* edit
)
2242 while (edit_get_byte (edit
, edit
->curs1
) != '\n') {
2245 edit_delete (edit
, 1);
2249 static void edit_delete_to_line_begin (WEdit
* edit
)
2251 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n') {
2254 edit_backspace (edit
, 1);
2259 edit_delete_line (WEdit
*edit
)
2262 * Delete right part of the line.
2263 * Note that edit_get_byte() returns '\n' when byte position is
2266 while (edit_get_byte (edit
, edit
->curs1
) != '\n') {
2267 (void) edit_delete (edit
, 1);
2272 * Note that edit_delete() will not corrupt anything if called while
2273 * cursor position is EOF.
2275 (void) edit_delete (edit
, 1);
2278 * Delete left part of the line.
2279 * Note, that edit_get_byte() returns '\n' when byte position is < 0.
2281 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n') {
2282 (void) edit_backspace (edit
, 1);
2286 void insert_spaces_tab (WEdit
* edit
, int half
)
2289 edit_update_curs_col (edit
);
2290 i
= ((edit
->curs_col
/ (option_tab_spacing
* space_width
/ (half
+ 1))) + 1) * (option_tab_spacing
* space_width
/ (half
+ 1)) - edit
->curs_col
;
2292 edit_insert (edit
, ' ');
2297 static int is_aligned_on_a_tab (WEdit
* edit
)
2299 edit_update_curs_col (edit
);
2300 if ((edit
->curs_col
% (TAB_SIZE
* space_width
)) && edit
->curs_col
% (TAB_SIZE
* space_width
) != (HALF_TAB_SIZE
* space_width
))
2301 return 0; /* not alligned on a tab */
2305 static int right_of_four_spaces (WEdit
*edit
)
2308 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2309 ch
|= edit_get_byte (edit
, edit
->curs1
- i
);
2311 return is_aligned_on_a_tab (edit
);
2315 static int left_of_four_spaces (WEdit
*edit
)
2318 for (i
= 0; i
< HALF_TAB_SIZE
; i
++)
2319 ch
|= edit_get_byte (edit
, edit
->curs1
+ i
);
2321 return is_aligned_on_a_tab (edit
);
2325 int edit_indent_width (WEdit
* edit
, long p
)
2328 while (strchr ("\t ", edit_get_byte (edit
, q
)) && q
< edit
->last_byte
- 1) /* move to the end of the leading whitespace of the line */
2330 return edit_move_forward3 (edit
, p
, 0, q
); /* count the number of columns of indentation */
2333 void edit_insert_indent (WEdit
* edit
, int indent
)
2335 if (!option_fill_tabs_with_spaces
) {
2336 while (indent
>= TAB_SIZE
) {
2337 edit_insert (edit
, '\t');
2341 while (indent
-- > 0)
2342 edit_insert (edit
, ' ');
2346 edit_auto_indent (WEdit
* edit
)
2351 /* use the previous line as a template */
2352 p
= edit_move_backward (edit
, p
, 1);
2353 /* copy the leading whitespace of the line */
2354 for (;;) { /* no range check - the line _is_ \n-terminated */
2355 c
= edit_get_byte (edit
, p
++);
2356 if (c
!= ' ' && c
!= '\t')
2358 edit_insert (edit
, c
);
2362 static void edit_double_newline (WEdit
* edit
)
2364 edit_insert (edit
, '\n');
2365 if (edit_get_byte (edit
, edit
->curs1
) == '\n')
2367 if (edit_get_byte (edit
, edit
->curs1
- 2) == '\n')
2369 edit
->force
|= REDRAW_PAGE
;
2370 edit_insert (edit
, '\n');
2373 static void edit_tab_cmd (WEdit
* edit
)
2377 if (option_fake_half_tabs
) {
2378 if (is_in_indent (edit
)) {
2379 /*insert a half tab (usually four spaces) unless there is a
2380 half tab already behind, then delete it and insert a
2382 if (!option_fill_tabs_with_spaces
&& right_of_four_spaces (edit
)) {
2383 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2384 edit_backspace (edit
, 1);
2385 edit_insert (edit
, '\t');
2387 insert_spaces_tab (edit
, 1);
2392 if (option_fill_tabs_with_spaces
) {
2393 insert_spaces_tab (edit
, 0);
2395 edit_insert (edit
, '\t');
2400 static void check_and_wrap_line (WEdit
* edit
)
2403 if (!option_typewriter_wrap
)
2405 edit_update_curs_col (edit
);
2406 if (edit
->curs_col
< option_word_wrap_line_length
)
2411 c
= edit_get_byte (edit
, curs
);
2412 if (c
== '\n' || curs
<= 0) {
2413 edit_insert (edit
, '\n');
2416 if (c
== ' ' || c
== '\t') {
2417 int current
= edit
->curs1
;
2418 edit_cursor_move (edit
, curs
- edit
->curs1
+ 1);
2419 edit_insert (edit
, '\n');
2420 edit_cursor_move (edit
, current
- edit
->curs1
+ 1);
2426 static void edit_execute_macro (WEdit
*edit
, struct macro macro
[], int n
);
2428 void edit_push_key_press (WEdit
* edit
)
2430 edit_push_action (edit
, KEY_PRESS
+ edit
->start_display
);
2431 if (edit
->mark2
== -1)
2432 edit_push_action (edit
, MARK_1
+ edit
->mark1
);
2435 /* this find the matching bracket in either direction, and sets edit->bracket */
2436 static long edit_get_bracket (WEdit
* edit
, int in_screen
, unsigned long furthest_bracket_search
)
2438 const char * const b
= "{}{[][()(", *p
;
2439 int i
= 1, a
, inc
= -1, c
, d
, n
= 0;
2440 unsigned long j
= 0;
2442 edit_update_curs_row (edit
);
2443 c
= edit_get_byte (edit
, edit
->curs1
);
2446 if (!furthest_bracket_search
)
2447 furthest_bracket_search
--;
2448 /* not on a bracket at all */
2451 /* the matching bracket */
2453 /* going left or right? */
2454 if (strchr ("{[(", c
))
2456 for (q
= edit
->curs1
+ inc
;; q
+= inc
) {
2457 /* out of buffer? */
2458 if (q
>= edit
->last_byte
|| q
< 0)
2460 a
= edit_get_byte (edit
, q
);
2461 /* don't want to eat CPU */
2462 if (j
++ > furthest_bracket_search
)
2464 /* out of screen? */
2466 if (q
< edit
->start_display
)
2468 /* count lines if searching downward */
2469 if (inc
> 0 && a
== '\n')
2470 if (n
++ >= edit
->num_widget_lines
- edit
->curs_row
) /* out of screen */
2473 /* count bracket depth */
2474 i
+= (a
== c
) - (a
== d
);
2475 /* return if bracket depth is zero */
2483 static long last_bracket
= -1;
2485 void edit_find_bracket (WEdit
* edit
)
2487 edit
->bracket
= edit_get_bracket (edit
, 1, 10000);
2488 if (last_bracket
!= edit
->bracket
)
2489 edit
->force
|= REDRAW_PAGE
;
2490 last_bracket
= edit
->bracket
;
2493 static void edit_goto_matching_bracket (WEdit
*edit
)
2496 q
= edit_get_bracket (edit
, 0, 0);
2499 edit
->bracket
= edit
->curs1
;
2500 edit
->force
|= REDRAW_PAGE
;
2501 edit_cursor_move (edit
, q
- edit
->curs1
);
2505 * This executes a command as though the user initiated it through a key
2506 * press. Callback with WIDGET_KEY as a message calls this after
2507 * translating the key press. This function can be used to pass any
2508 * command to the editor. Note that the screen wouldn't update
2509 * automatically. Either of command or char_for_insertion must be
2510 * passed as -1. Commands are executed, and char_for_insertion is
2511 * inserted at the cursor.
2513 void edit_execute_key_command (WEdit
*edit
, int command
, int char_for_insertion
)
2515 if (command
== CK_Begin_Record_Macro
) {
2517 edit
->force
|= REDRAW_CHAR_ONLY
| REDRAW_LINE
;
2520 if (command
== CK_End_Record_Macro
&& edit
->macro_i
!= -1) {
2521 edit
->force
|= REDRAW_COMPLETELY
;
2522 edit_save_macro_cmd (edit
, edit
->macro
, edit
->macro_i
);
2526 if (edit
->macro_i
>= 0 && edit
->macro_i
< MAX_MACRO_LENGTH
- 1) {
2527 edit
->macro
[edit
->macro_i
].command
= command
;
2528 edit
->macro
[edit
->macro_i
++].ch
= char_for_insertion
;
2530 /* record the beginning of a set of editing actions initiated by a key press */
2531 if (command
!= CK_Undo
&& command
!= CK_Ext_Mode
)
2532 edit_push_key_press (edit
);
2534 edit_execute_cmd (edit
, command
, char_for_insertion
);
2535 if (column_highlighting
)
2536 edit
->force
|= REDRAW_PAGE
;
2539 static const char * const shell_cmd
[] = SHELL_COMMANDS_i
;
2542 This executes a command at a lower level than macro recording.
2543 It also does not push a key_press onto the undo stack. This means
2544 that if it is called many times, a single undo command will undo
2545 all of them. It also does not check for the Undo command.
2548 edit_execute_cmd (WEdit
*edit
, int command
, int char_for_insertion
)
2550 edit
->force
|= REDRAW_LINE
;
2552 /* The next key press will unhighlight the found string, so update
2554 if (edit
->found_len
|| column_highlighting
)
2555 edit
->force
|= REDRAW_PAGE
;
2557 if (command
/ 100 == 6) { /* a highlight command like shift-arrow */
2558 column_highlighting
= 0;
2559 if (!edit
->highlight
2560 || (edit
->mark2
!= -1 && edit
->mark1
!= edit
->mark2
)) {
2561 edit_mark_cmd (edit
, 1); /* clear */
2562 edit_mark_cmd (edit
, 0); /* marking on */
2564 edit
->highlight
= 1;
2565 } else { /* any other command */
2566 if (edit
->highlight
)
2567 edit_mark_cmd (edit
, 0); /* clear */
2568 edit
->highlight
= 0;
2571 /* first check for undo */
2572 if (command
== CK_Undo
) {
2573 edit_do_undo (edit
);
2574 edit
->found_len
= 0;
2575 edit
->prev_col
= edit_get_col (edit
);
2576 edit
->search_start
= edit
->curs1
;
2580 /* An ordinary key press */
2581 if (char_for_insertion
>= 0) {
2582 if (edit
->overwrite
) {
2583 if (edit_get_byte (edit
, edit
->curs1
) != '\n')
2584 edit_delete (edit
, 0);
2586 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2587 edit_insert_over (edit
);
2589 if ( char_for_insertion
> 255 && utf8_display
== 0 ) {
2590 unsigned char str
[6 + 1];
2592 int res
= g_unichar_to_utf8 (char_for_insertion
, (char *)str
);
2599 while ( str
[i
] != 0 && i
<=6) {
2600 char_for_insertion
= str
[i
];
2601 edit_insert (edit
, char_for_insertion
);
2606 edit_insert (edit
, char_for_insertion
);
2610 if (option_auto_para_formatting
) {
2611 format_paragraph (edit
, 0);
2612 edit
->force
|= REDRAW_PAGE
;
2614 check_and_wrap_line (edit
);
2615 edit
->found_len
= 0;
2616 edit
->prev_col
= edit_get_col (edit
);
2617 edit
->search_start
= edit
->curs1
;
2618 edit_find_bracket (edit
);
2625 case CK_Begin_Page_Highlight
:
2626 case CK_End_Page_Highlight
:
2633 if ( edit
->mark2
>= 0 ) {
2634 if ( !option_persistent_selections
) {
2635 if (column_highlighting
)
2636 edit_push_action (edit
, COLUMN_ON
);
2637 column_highlighting
= 0;
2638 edit_mark_cmd (edit
, 1);
2646 case CK_Begin_Page_Highlight
:
2647 case CK_End_Page_Highlight
:
2652 case CK_Word_Left_Highlight
:
2653 case CK_Word_Right_Highlight
:
2654 case CK_Up_Highlight
:
2655 case CK_Down_Highlight
:
2656 case CK_Up_Alt_Highlight
:
2657 case CK_Down_Alt_Highlight
:
2658 if (edit
->mark2
== -1)
2659 break; /*marking is following the cursor: may need to highlight a whole line */
2662 case CK_Left_Highlight
:
2663 case CK_Right_Highlight
:
2664 edit
->force
|= REDRAW_CHAR_ONLY
;
2667 /* basic cursor key commands */
2670 /* if non persistent selection and text selected */
2671 if ( !option_persistent_selections
) {
2672 if ( edit
->mark1
!= edit
->mark2
) {
2673 edit_block_delete_cmd (edit
);
2677 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 ) {
2681 if (option_backspace_through_tabs
&& is_in_indent (edit
)) {
2682 while (edit_get_byte (edit
, edit
->curs1
- 1) != '\n'
2684 edit_backspace (edit
, 1);
2687 if (option_fake_half_tabs
) {
2689 if (is_in_indent (edit
) && right_of_four_spaces (edit
)) {
2690 for (i
= 0; i
< HALF_TAB_SIZE
; i
++)
2691 edit_backspace (edit
, 1);
2696 edit_backspace (edit
, 0);
2699 /* if non persistent selection and text selected */
2700 if ( !option_persistent_selections
) {
2701 if ( edit
->mark1
!= edit
->mark2
) {
2702 edit_block_delete_cmd (edit
);
2707 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2708 edit_insert_over (edit
);
2710 if (option_fake_half_tabs
) {
2712 if (is_in_indent (edit
) && left_of_four_spaces (edit
)) {
2713 for (i
= 1; i
<= HALF_TAB_SIZE
; i
++)
2714 edit_delete (edit
, 1);
2718 edit_delete (edit
, 0);
2720 case CK_Delete_Word_Left
:
2721 edit_left_delete_word (edit
);
2723 case CK_Delete_Word_Right
:
2724 edit_right_delete_word (edit
);
2726 case CK_Delete_Line
:
2727 edit_delete_line (edit
);
2729 case CK_Delete_To_Line_End
:
2730 edit_delete_to_line_end (edit
);
2732 case CK_Delete_To_Line_Begin
:
2733 edit_delete_to_line_begin (edit
);
2737 if (option_auto_para_formatting
) {
2738 edit_double_newline (edit
);
2739 if (option_return_does_auto_indent
)
2740 edit_auto_indent (edit
);
2741 format_paragraph (edit
, 0);
2743 edit_insert (edit
, '\n');
2744 if (option_return_does_auto_indent
) {
2745 edit_auto_indent (edit
);
2750 edit_insert (edit
, '\n');
2753 case CK_Page_Up_Alt_Highlight
:
2754 column_highlighting
= 1;
2756 case CK_Page_Up_Highlight
:
2757 edit_move_up (edit
, edit
->num_widget_lines
- 1, 1);
2759 case CK_Page_Down_Alt_Highlight
:
2760 column_highlighting
= 1;
2762 case CK_Page_Down_Highlight
:
2763 edit_move_down (edit
, edit
->num_widget_lines
- 1, 1);
2765 case CK_Left_Alt_Highlight
:
2766 column_highlighting
= 1;
2768 case CK_Left_Highlight
:
2769 if (option_fake_half_tabs
) {
2770 if (is_in_indent (edit
) && right_of_four_spaces (edit
)) {
2771 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0)
2774 edit_cursor_move (edit
, -HALF_TAB_SIZE
);
2775 edit
->force
&= (0xFFF - REDRAW_CHAR_ONLY
);
2779 edit_left_char_move_cmd (edit
);
2781 case CK_Right_Alt_Highlight
:
2782 column_highlighting
= 1;
2784 case CK_Right_Highlight
:
2785 if (option_fake_half_tabs
) {
2786 if (is_in_indent (edit
) && left_of_four_spaces (edit
)) {
2787 edit_cursor_move (edit
, HALF_TAB_SIZE
);
2788 edit
->force
&= (0xFFF - REDRAW_CHAR_ONLY
);
2792 edit_right_char_move_cmd (edit
);
2795 case CK_Begin_Page_Highlight
:
2796 edit_begin_page (edit
);
2799 case CK_End_Page_Highlight
:
2800 edit_end_page (edit
);
2803 case CK_Word_Left_Highlight
:
2804 edit_left_word_move_cmd (edit
);
2807 case CK_Word_Right_Highlight
:
2808 edit_right_word_move_cmd (edit
);
2810 case CK_Up_Alt_Highlight
:
2811 column_highlighting
= 1;
2813 case CK_Up_Highlight
:
2814 edit_move_up (edit
, 1, 0);
2816 case CK_Down_Alt_Highlight
:
2817 column_highlighting
= 1;
2819 case CK_Down_Highlight
:
2820 edit_move_down (edit
, 1, 0);
2822 case CK_Paragraph_Up_Alt_Highlight
:
2823 column_highlighting
= 1;
2824 case CK_Paragraph_Up
:
2825 case CK_Paragraph_Up_Highlight
:
2826 edit_move_up_paragraph (edit
, 0);
2828 case CK_Paragraph_Down_Alt_Highlight
:
2829 column_highlighting
= 1;
2830 case CK_Paragraph_Down
:
2831 case CK_Paragraph_Down_Highlight
:
2832 edit_move_down_paragraph (edit
, 0);
2834 case CK_Scroll_Up_Alt_Highlight
:
2835 column_highlighting
= 1;
2837 case CK_Scroll_Up_Highlight
:
2838 edit_move_up (edit
, 1, 1);
2840 case CK_Scroll_Down_Alt_Highlight
:
2841 column_highlighting
= 1;
2842 case CK_Scroll_Down
:
2843 case CK_Scroll_Down_Highlight
:
2844 edit_move_down (edit
, 1, 1);
2847 case CK_Home_Highlight
:
2848 edit_cursor_to_bol (edit
);
2851 case CK_End_Highlight
:
2852 edit_cursor_to_eol (edit
);
2855 /* if text marked shift block */
2856 if ( edit
->mark1
!= edit
->mark2
&& !option_persistent_selections
) {
2857 edit_move_block_to_right (edit
);
2859 if ( option_cursor_beyond_eol
)
2860 edit_insert_over (edit
);
2861 edit_tab_cmd (edit
);
2862 if (option_auto_para_formatting
) {
2863 format_paragraph (edit
, 0);
2864 edit
->force
|= REDRAW_PAGE
;
2866 check_and_wrap_line (edit
);
2871 case CK_Toggle_Insert
:
2872 edit
->overwrite
= (edit
->overwrite
== 0);
2876 if (edit
->mark2
>= 0) {
2877 if (column_highlighting
)
2878 edit_push_action (edit
, COLUMN_ON
);
2879 column_highlighting
= 0;
2881 edit_mark_cmd (edit
, 0);
2883 case CK_Column_Mark
:
2884 if (!column_highlighting
)
2885 edit_push_action (edit
, COLUMN_OFF
);
2886 column_highlighting
= 1;
2887 edit_mark_cmd (edit
, 0);
2890 if (column_highlighting
)
2891 edit_push_action (edit
, COLUMN_ON
);
2892 column_highlighting
= 0;
2893 edit_mark_cmd (edit
, 1);
2896 case CK_Toggle_Line_State
:
2897 option_line_state
= !option_line_state
;
2898 if ( option_line_state
) {
2899 option_line_state_width
= LINE_STATE_WIDTH
;
2901 option_line_state_width
= 0;
2903 edit
->force
|= REDRAW_PAGE
;
2906 case CK_Toggle_Bookmark
:
2907 book_mark_clear (edit
, edit
->curs_line
, BOOK_MARK_FOUND_COLOR
);
2908 if (book_mark_query_color (edit
, edit
->curs_line
, BOOK_MARK_COLOR
))
2909 book_mark_clear (edit
, edit
->curs_line
, BOOK_MARK_COLOR
);
2911 book_mark_insert (edit
, edit
->curs_line
, BOOK_MARK_COLOR
);
2913 case CK_Flush_Bookmarks
:
2914 book_mark_flush (edit
, BOOK_MARK_COLOR
);
2915 book_mark_flush (edit
, BOOK_MARK_FOUND_COLOR
);
2916 edit
->force
|= REDRAW_PAGE
;
2918 case CK_Next_Bookmark
:
2919 if (edit
->book_mark
) {
2920 struct _book_mark
*p
;
2921 p
= (struct _book_mark
*) book_mark_find (edit
,
2925 if (p
->line
>= edit
->start_line
+ edit
->num_widget_lines
2926 || p
->line
< edit
->start_line
)
2927 edit_move_display (edit
,
2929 edit
->num_widget_lines
/ 2);
2930 edit_move_to_line (edit
, p
->line
);
2934 case CK_Prev_Bookmark
:
2935 if (edit
->book_mark
) {
2936 struct _book_mark
*p
;
2937 p
= (struct _book_mark
*) book_mark_find (edit
,
2939 while (p
->line
== edit
->curs_line
)
2943 if (p
->line
>= edit
->start_line
+ edit
->num_widget_lines
2944 || p
->line
< edit
->start_line
)
2945 edit_move_display (edit
,
2947 edit
->num_widget_lines
/ 2);
2948 edit_move_to_line (edit
, p
->line
);
2953 case CK_Beginning_Of_Text
:
2954 case CK_Beginning_Of_Text_Highlight
:
2955 edit_move_to_top (edit
);
2957 case CK_End_Of_Text
:
2958 case CK_End_Of_Text_Highlight
:
2959 edit_move_to_bottom (edit
);
2963 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2964 edit_insert_over (edit
);
2965 edit_block_copy_cmd (edit
);
2968 edit_block_delete_cmd (edit
);
2971 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2972 edit_insert_over (edit
);
2973 edit_block_move_cmd (edit
);
2977 edit_copy_to_X_buf_cmd (edit
);
2980 edit_cut_to_X_buf_cmd (edit
);
2983 if ( option_cursor_beyond_eol
&& edit
->over_col
> 0 )
2984 edit_insert_over (edit
);
2985 edit_paste_from_X_buf_cmd (edit
);
2987 case CK_Selection_History
:
2988 edit_paste_from_history (edit
);
2992 edit_save_as_cmd (edit
);
2995 edit_save_confirm_cmd (edit
);
2998 edit_load_cmd (edit
, EDIT_FILE_COMMON
);
3001 edit_save_block_cmd (edit
);
3003 case CK_Insert_File
:
3004 edit_insert_file_cmd (edit
);
3007 case CK_Load_Prev_File
:
3008 edit_load_back_cmd (edit
);
3010 case CK_Load_Next_File
:
3011 edit_load_forward_cmd (edit
);
3014 case CK_Load_Syntax_File
:
3015 edit_load_cmd (edit
, EDIT_FILE_SYNTAX
);
3017 case CK_Load_Menu_File
:
3018 edit_load_cmd (edit
, EDIT_FILE_MENU
);
3021 case CK_Toggle_Syntax
:
3022 if ((option_syntax_highlighting
^= 1) == 1)
3023 edit_load_syntax (edit
, NULL
, option_syntax_type
);
3024 edit
->force
|= REDRAW_PAGE
;
3027 case CK_Toggle_Tab_TWS
:
3028 enable_show_tabs_tws
^= 1;
3029 edit
->force
|= REDRAW_PAGE
;
3033 edit_search_cmd (edit
, 0);
3036 edit_search_cmd (edit
, 1);
3039 edit_replace_cmd (edit
, 0);
3041 case CK_Replace_Again
:
3042 edit_replace_cmd (edit
, 1);
3044 case CK_Complete_Word
:
3045 /* if text marked shift block */
3046 if ( edit
->mark1
!= edit
->mark2
&& !option_persistent_selections
) {
3047 edit_move_block_to_left (edit
);
3049 edit_complete_word_cmd (edit
);
3052 case CK_Find_Definition
:
3053 edit_get_match_keyword_cmd (edit
);
3057 dlg_stop (edit
->widget
.parent
);
3060 edit_new_cmd (edit
);
3064 edit_help_cmd (edit
);
3068 edit_refresh_cmd (edit
);
3073 /* fool gcc to prevent a Y2K warning */
3074 char time_format
[] = "_c";
3075 time_format
[0] = '%';
3077 FMT_LOCALTIME_CURRENT(s
, sizeof(s
), time_format
);
3078 edit_print_string (edit
, s
);
3079 edit
->force
|= REDRAW_PAGE
;
3083 edit_goto_cmd (edit
);
3085 case CK_Paragraph_Format
:
3086 format_paragraph (edit
, 1);
3087 edit
->force
|= REDRAW_PAGE
;
3089 case CK_Delete_Macro
:
3090 edit_delete_macro_cmd (edit
);
3092 case CK_Match_Bracket
:
3093 edit_goto_matching_bracket (edit
);
3099 edit_sort_cmd (edit
);
3102 edit_ext_cmd (edit
);
3105 edit_mail_dialog (edit
);
3110 case CK_Select_Codepage
:
3111 edit_select_codepage_cmd (edit
);
3113 case CK_Insert_Literal
:
3114 edit_insert_literal_cmd (edit
);
3116 case CK_Execute_Macro
:
3117 edit_execute_macro_cmd (edit
);
3119 case CK_Begin_End_Macro
:
3120 edit_begin_end_macro_cmd (edit
);
3130 if ((command
/ 1000) == 1) /* a shell command */
3131 edit_block_process_cmd (edit
, shell_cmd
[command
- 1000], 1);
3132 if (command
> CK_Macro (0) && command
<= CK_Last_Macro
) { /* a macro command */
3133 struct macro m
[MAX_MACRO_LENGTH
];
3135 if (edit_load_macro_cmd (edit
, m
, &nm
, command
- 2000))
3136 edit_execute_macro (edit
, m
, nm
);
3139 /* keys which must set the col position, and the search vars */
3144 case CK_Replace_Again
:
3145 case CK_Complete_Word
:
3146 edit
->prev_col
= edit_get_col (edit
);
3149 case CK_Up_Highlight
:
3150 case CK_Up_Alt_Highlight
:
3152 case CK_Down_Highlight
:
3153 case CK_Down_Alt_Highlight
:
3155 case CK_Page_Up_Highlight
:
3156 case CK_Page_Up_Alt_Highlight
:
3158 case CK_Page_Down_Highlight
:
3159 case CK_Page_Down_Alt_Highlight
:
3160 case CK_Beginning_Of_Text
:
3161 case CK_Beginning_Of_Text_Highlight
:
3162 case CK_End_Of_Text
:
3163 case CK_End_Of_Text_Highlight
:
3164 case CK_Paragraph_Up
:
3165 case CK_Paragraph_Up_Highlight
:
3166 case CK_Paragraph_Up_Alt_Highlight
:
3167 case CK_Paragraph_Down
:
3168 case CK_Paragraph_Down_Highlight
:
3169 case CK_Paragraph_Down_Alt_Highlight
:
3171 case CK_Scroll_Up_Highlight
:
3172 case CK_Scroll_Up_Alt_Highlight
:
3173 case CK_Scroll_Down
:
3174 case CK_Scroll_Down_Highlight
:
3175 case CK_Scroll_Down_Alt_Highlight
:
3176 edit
->search_start
= edit
->curs1
;
3177 edit
->found_len
= 0;
3180 edit
->found_len
= 0;
3181 edit
->prev_col
= edit_get_col (edit
);
3182 edit
->search_start
= edit
->curs1
;
3184 edit_find_bracket (edit
);
3186 if (option_auto_para_formatting
) {
3190 case CK_Delete_Word_Left
:
3191 case CK_Delete_Word_Right
:
3192 case CK_Delete_To_Line_End
:
3193 case CK_Delete_To_Line_Begin
:
3194 format_paragraph (edit
, 0);
3195 edit
->force
|= REDRAW_PAGE
;
3202 edit_execute_macro (WEdit
*edit
, struct macro macro
[], int n
)
3206 if (edit
->macro_depth
++ > 256) {
3207 edit_error_dialog (_("Error"), _("Macro recursion is too deep"));
3208 edit
->macro_depth
--;
3211 edit
->force
|= REDRAW_PAGE
;
3212 for (; i
< n
; i
++) {
3213 edit_execute_cmd (edit
, macro
[i
].command
, macro
[i
].ch
);
3215 edit_update_screen (edit
);
3216 edit
->macro_depth
--;
3219 /* User edit menu, like user menu (F2) but only in editor. */
3221 user_menu (WEdit
* edit
)
3226 long start_mark
, end_mark
;
3227 char *block_file
= concat_dir_and_file (home_dir
, EDIT_BLOCK_FILE
);
3230 nomark
= eval_marks (edit
, &start_mark
, &end_mark
);
3231 if (!nomark
) /* remember marked or not */
3232 edit_save_block (edit
, block_file
, start_mark
, end_mark
);
3234 /* run shell scripts from menu */
3235 user_menu_cmd (edit
);
3237 if (mc_stat (block_file
, &status
) != 0 || !status
.st_size
) {
3238 /* no block messages */
3243 /* i.e. we have marked block */
3244 rc
= edit_block_delete_cmd (edit
);
3248 edit_insert_file (edit
, block_file
);
3251 /* truncate block file */
3252 if ((fd
= fopen (block_file
, "w"))) {
3256 edit_refresh_cmd (edit
);
3257 edit
->force
|= REDRAW_COMPLETELY
;
3260 g_free (block_file
);
3264 edit_stack_init (void)
3266 for (edit_stack_iterator
= 0;
3267 edit_stack_iterator
< MAX_HISTORY_MOVETO
;
3268 edit_stack_iterator
++ ) {
3269 edit_history_moveto
[edit_stack_iterator
].filename
= NULL
;
3270 edit_history_moveto
[edit_stack_iterator
].line
= -1;
3273 edit_stack_iterator
= 0;
3277 edit_stack_free (void)
3279 for (edit_stack_iterator
= 0;
3280 edit_stack_iterator
< MAX_HISTORY_MOVETO
;
3281 edit_stack_iterator
++)
3282 g_free (edit_history_moveto
[edit_stack_iterator
].filename
);