-
Notifications
You must be signed in to change notification settings - Fork 18
/
crossline.c
1444 lines (1312 loc) · 53.8 KB
/
crossline.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* crossline.c -- Version 1.0
*
* Crossline is a small, self-contained, zero-config, MIT licensed,
* cross-platform, readline and libedit replacement.
*
* Press <F1> to get full shortcuts list.
*
* You can find the latest source code and description at:
*
* https://github.com/jcwangxp/crossline
*
* ------------------------------------------------------------------------
*
* MIT License
*
* Copyright (c) 2019, JC Wang (wang_junchuan@163.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* ------------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <stdint.h>
#ifdef _WIN32
#include <io.h>
#include <conio.h>
#include <windows.h>
#ifndef STDIN_FILENO
#define STDIN_FILENO _fileno(stdin)
#define STDOUT_FILENO _fileno(stdout)
#endif
#define isatty _isatty
#define strcasecmp _stricmp
#define strncasecmp _strnicmp
static int s_crossline_win = 1;
#else
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
static int s_crossline_win = 0;
#endif
#include "crossline.h"
/*****************************************************************************/
// Default word delimiters for move and cut
#define CROSS_DFT_DELIMITER " !\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"
#define CROSS_HISTORY_MAX_LINE 256 // Maximum history line number
#define CROSS_HISTORY_BUF_LEN 4096 // History line length
#define CROSS_HIS_MATCH_PAT_NUM 16 // History search pattern number
#define CROSS_COMPLET_MAX_LINE 1024 // Maximum completion word number
#define CROSS_COMPLET_WORD_LEN 64 // Completion word length
#define CROSS_COMPLET_HELP_LEN 256 // Completion word's help length
#define CROSS_COMPLET_HINT_LEN 128 // Completion syntax hints length
// Make control-characters readable
#define CTRL_KEY(key) (key - 0x40)
// Build special key code for escape sequences
#define ALT_KEY(key) (key + ((KEY_ESC+1)<<8))
#define ESC_KEY3(ch) ((KEY_ESC<<8) + ch)
#define ESC_KEY4(ch1,ch2) ((KEY_ESC<<8) + ((ch1)<<16) + ch2)
#define ESC_KEY6(ch1,ch2,ch3) ((KEY_ESC<<8) + ((ch1)<<16) + ((ch2)<<24) + ch3)
#define ESC_OKEY(ch) ((KEY_ESC<<8) + ('O'<<16) + ch)
/*****************************************************************************/
enum {
KEY_TAB = 9, // Autocomplete.
KEY_BACKSPACE = 8, // Delete character before cursor.
KEY_ENTER = 13, // Accept line. (Linux)
KEY_ENTER2 = 10, // Accept line. (Windows)
KEY_ESC = 27, // Escapce
KEY_DEL2 = 127, // It's treaded as Backspace is Linux
KEY_DEBUG = 30, // Ctrl-^ Enter keyboard debug mode
#ifdef _WIN32 // Windows
KEY_INSERT = (KEY_ESC<<8) + 'R', // Paste last cut text.
KEY_DEL = (KEY_ESC<<8) + 'S', // Delete character under cursor.
KEY_HOME = (KEY_ESC<<8) + 'G', // Move cursor to start of line.
KEY_END = (KEY_ESC<<8) + 'O', // Move cursor to end of line.
KEY_PGUP = (KEY_ESC<<8) + 'I', // Move to first line in history.
KEY_PGDN = (KEY_ESC<<8) + 'Q', // Move to end of input history.
KEY_UP = (KEY_ESC<<8) + 'H', // Fetch previous line in history.
KEY_DOWN = (KEY_ESC<<8) + 'P', // Fetch next line in history.
KEY_LEFT = (KEY_ESC<<8) + 'K', // Move back a character.
KEY_RIGHT = (KEY_ESC<<8) + 'M', // Move forward a character.
KEY_CTRL_DEL = (KEY_ESC<<8) + 147, // Cut word following cursor.
KEY_CTRL_HOME = (KEY_ESC<<8) + 'w', // Cut from start of line to cursor.
KEY_CTRL_END = (KEY_ESC<<8) + 'u', // Cut from cursor to end of line.
KEY_CTRL_UP = (KEY_ESC<<8) + 141, // Uppercase current or following word.
KEY_CTRL_DOWN = (KEY_ESC<<8) + 145, // Lowercase current or following word.
KEY_CTRL_LEFT = (KEY_ESC<<8) + 's', // Move back a word.
KEY_CTRL_RIGHT = (KEY_ESC<<8) + 't', // Move forward a word.
KEY_CTRL_BACKSPACE = (KEY_ESC<<8) + 127, // Cut from start of line to cursor.
KEY_ALT_DEL = ALT_KEY(163), // Cut word following cursor.
KEY_ALT_HOME = ALT_KEY(151), // Cut from start of line to cursor.
KEY_ALT_END = ALT_KEY(159), // Cut from cursor to end of line.
KEY_ALT_UP = ALT_KEY(152), // Uppercase current or following word.
KEY_ALT_DOWN = ALT_KEY(160), // Lowercase current or following word.
KEY_ALT_LEFT = ALT_KEY(155), // Move back a word.
KEY_ALT_RIGHT = ALT_KEY(157), // Move forward a word.
KEY_ALT_BACKSPACE = ALT_KEY(KEY_BACKSPACE), // Cut from start of line to cursor.
KEY_F1 = (KEY_ESC<<8) + ';', // Show help.
KEY_F2 = (KEY_ESC<<8) + '<', // Show history.
KEY_F3 = (KEY_ESC<<8) + '=', // Clear history (need confirm).
KEY_F4 = (KEY_ESC<<8) + '>', // Search history with current input.
#else // Linux
KEY_INSERT = ESC_KEY4('2','~'), // vt100 Esc[2~: Paste last cut text.
KEY_DEL = ESC_KEY4('3','~'), // vt100 Esc[3~: Delete character under cursor.
KEY_HOME = ESC_KEY4('1','~'), // vt100 Esc[1~: Move cursor to start of line.
KEY_END = ESC_KEY4('4','~'), // vt100 Esc[4~: Move cursor to end of line.
KEY_PGUP = ESC_KEY4('5','~'), // vt100 Esc[5~: Move to first line in history.
KEY_PGDN = ESC_KEY4('6','~'), // vt100 Esc[6~: Move to end of input history.
KEY_UP = ESC_KEY3('A'), // Esc[A: Fetch previous line in history.
KEY_DOWN = ESC_KEY3('B'), // Esc[B: Fetch next line in history.
KEY_LEFT = ESC_KEY3('D'), // Esc[D: Move back a character.
KEY_RIGHT = ESC_KEY3('C'), // Esc[C: Move forward a character.
KEY_HOME2 = ESC_KEY3('H'), // xterm Esc[H: Move cursor to start of line.
KEY_END2 = ESC_KEY3('F'), // xterm Esc[F: Move cursor to end of line.
KEY_CTRL_DEL = ESC_KEY6('3','5','~'), // xterm Esc[3;5~: Cut word following cursor.
KEY_CTRL_HOME = ESC_KEY6('1','5','H'), // xterm Esc[1;5H: Cut from start of line to cursor.
KEY_CTRL_END = ESC_KEY6('1','5','F'), // xterm Esc[1;5F: Cut from cursor to end of line.
KEY_CTRL_UP = ESC_KEY6('1','5','A'), // xterm Esc[1;5A: Uppercase current or following word.
KEY_CTRL_DOWN = ESC_KEY6('1','5','B'), // xterm Esc[1;5B: Lowercase current or following word.
KEY_CTRL_LEFT = ESC_KEY6('1','5','D'), // xterm Esc[1;5D: Move back a word.
KEY_CTRL_RIGHT = ESC_KEY6('1','5','C'), // xterm Esc[1;5C: Move forward a word.
KEY_CTRL_BACKSPACE = 31, // xterm Cut from start of line to cursor.
KEY_CTRL_UP2 = ESC_OKEY('A'), // vt100 EscOA: Uppercase current or following word.
KEY_CTRL_DOWN2 = ESC_OKEY('B'), // vt100 EscOB: Lowercase current or following word.
KEY_CTRL_LEFT2 = ESC_OKEY('D'), // vt100 EscOD: Move back a word.
KEY_CTRL_RIGHT2 = ESC_OKEY('C'), // vt100 EscOC: Move forward a word.
KEY_ALT_DEL = ESC_KEY6('3','3','~'), // xterm Esc[3;3~: Cut word following cursor.
KEY_ALT_HOME = ESC_KEY6('1','3','H'), // xterm Esc[1;3H: Cut from start of line to cursor.
KEY_ALT_END = ESC_KEY6('1','3','F'), // xterm Esc[1;3F: Cut from cursor to end of line.
KEY_ALT_UP = ESC_KEY6('1','3','A'), // xterm Esc[1;3A: Uppercase current or following word.
KEY_ALT_DOWN = ESC_KEY6('1','3','B'), // xterm Esc[1;3B: Lowercase current or following word.
KEY_ALT_LEFT = ESC_KEY6('1','3','D'), // xterm Esc[1;3D: Move back a word.
KEY_ALT_RIGHT = ESC_KEY6('1','3','C'), // xterm Esc[1;3C: Move forward a word.
KEY_ALT_BACKSPACE = ALT_KEY(KEY_DEL2), // Cut from start of line to cursor.
KEY_F1 = ESC_OKEY('P'), // EscOP: Show help.
KEY_F2 = ESC_OKEY('Q'), // EscOQ: Show history.
KEY_F3 = ESC_OKEY('R'), // EscOP: Clear history (need confirm).
KEY_F4 = ESC_OKEY('S'), // EscOP: Search history with current input.
KEY_F1_2 = ESC_KEY4('[', 'A'), // linux Esc[[A: Show help.
KEY_F2_2 = ESC_KEY4('[', 'B'), // linux Esc[[B: Show history.
KEY_F3_2 = ESC_KEY4('[', 'C'), // linux Esc[[C: Clear history (need confirm).
KEY_F4_2 = ESC_KEY4('[', 'D'), // linux Esc[[D: Search history with current input.
#endif
};
/*****************************************************************************/
typedef struct crossline_completions_t {
int num;
char word[CROSS_COMPLET_MAX_LINE][CROSS_COMPLET_WORD_LEN];
char help[CROSS_COMPLET_MAX_LINE][CROSS_COMPLET_HELP_LEN];
char hints[CROSS_COMPLET_HINT_LEN];
crossline_color_e color_word[CROSS_COMPLET_MAX_LINE];
crossline_color_e color_help[CROSS_COMPLET_MAX_LINE];
crossline_color_e color_hints;
} crossline_completions_t;
static char s_word_delimiter[64] = CROSS_DFT_DELIMITER;
static char s_history_buf[CROSS_HISTORY_MAX_LINE][CROSS_HISTORY_BUF_LEN];
static uint32_t s_history_id = 0; // Increase always, wrap until UINT_MAX
static char s_clip_buf[CROSS_HISTORY_BUF_LEN]; // Buf to store cut text
static crossline_completion_callback s_completion_callback = NULL;
static int s_paging_print_line = 0; // For paging control
static int s_got_resize = 0; // Window size changed
static crossline_color_e s_prompt_color = CROSSLINE_COLOR_DEFAULT;
static char* crossline_readline_edit (char *buf, int size, const char *prompt, int has_input, int in_his);
static int crossline_history_dump (FILE *file, int print_id, char *patterns, int sel_id, int paging);
#define isdelim(ch) (NULL != strchr(s_word_delimiter, ch)) // Check ch is word delimiter
// Debug macro.
#if 0
static FILE *s_crossline_debug_fp = NULL;
#define crossline_debug(...) \
do { \
if (NULL == s_crossline_debug_fp) { s_crossline_debug_fp = fopen("crossline_debug.txt", "a"); } \
fprintf (s_crossline_debug_fp, __VA_ARGS__); \
fflush (s_crossline_debug_fp); \
} while (0)
#else
#define crossline_debug(...)
#endif
/*****************************************************************************/
static char* s_crossline_help[] = {
" Misc Commands",
" +-------------------------+--------------------------------------------------+",
" | F1 | Show edit shortcuts help. |",
" | Ctrl-^ | Enter keyboard debugging mode. |",
" +-------------------------+--------------------------------------------------+",
" Move Commands",
" +-------------------------+--------------------------------------------------+",
" | Ctrl-B, Left | Move back a character. |",
" | Ctrl-F, Right | Move forward a character. |",
" | Up, ESC+Up | Move cursor to up line. (For multiple lines) |",
" | Ctrl-Up, Alt-Up | (Ctrl-Up, Alt-Up only supports Windows/Xterm) |",
" | Down, ESC+Down | Move cursor to down line. (For multiple lines) |",
" | Ctrl-Down,Alt-Down | (Ctrl-Down, Alt-Down only support Windows/Xterm)|",
" | Alt-B, ESC+Left, | Move back a word. |",
" | Ctrl-Left, Alt-Left | (Ctrl-Left, Alt-Left only support Windows/Xterm)|",
" | Alt-F, ESC+Right, | Move forward a word. |",
" | Ctrl-Right, Alt-Right | (Ctrl-Right,Alt-Right only support Windows/Xterm)|",
" | Ctrl-A, Home | Move cursor to start of line. |",
" | Ctrl-E, End | Move cursor to end of line. |",
" | Ctrl-L | Clear screen and redisplay line. |",
" +-------------------------+--------------------------------------------------+",
" Edit Commands",
" +-------------------------+--------------------------------------------------+",
" | Ctrl-H, Backspace | Delete character before cursor. |",
" | Ctrl-D, DEL | Delete character under cursor. |",
" | Alt-U | Uppercase current or following word. |",
" | Alt-L | Lowercase current or following word. |",
" | Alt-C | Capitalize current or following word. |",
" | Alt-\\ | Delete whitespace around cursor. |",
" | Ctrl-T | Transpose character. |",
" +-------------------------+--------------------------------------------------+",
" Cut&Paste Commands",
" +-------------------------+--------------------------------------------------+",
" | Ctrl-K, ESC+End, | Cut from cursor to end of line. |",
" | Ctrl-End, Alt-End | (Ctrl-End, Alt-End only support Windows/Xterm) |",
" | Ctrl-U, ESC+Home, | Cut from start of line to cursor. |",
" | Ctrl-Home, Alt-Home | (Ctrl-Home, Alt-Home only support Windows/Xterm)|",
" | Ctrl-X | Cut whole line. |",
" | Alt-Backspace, | Cut word to left of cursor. |",
" | Esc+Backspace, | |",
" | Clt-Backspace | (Clt-Backspace only supports Windows/Xterm) |",
" | Alt-D, ESC+Del, | Cut word following cursor. |",
" | Alt-Del, Ctrl-Del | (Alt-Del,Ctrl-Del only support Windows/Xterm) |",
" | Ctrl-W | Cut to left till whitespace (not word). |",
" | Ctrl-Y, Ctrl-V, Insert | Paste last cut text. |",
" +-------------------------+--------------------------------------------------+",
" Complete Commands",
" +-------------------------+--------------------------------------------------+",
" | TAB, Ctrl-I | Autocomplete. |",
" | Alt-=, Alt-? | List possible completions. |",
" +-------------------------+--------------------------------------------------+",
" History Commands",
" +-------------------------+--------------------------------------------------+",
" | Ctrl-P, Up | Fetch previous line in history. |",
" | Ctrl-N, Down | Fetch next line in history. |",
" | Alt-<, PgUp | Move to first line in history. |",
" | Alt->, PgDn | Move to end of input history. |",
" | Ctrl-R, Ctrl-S | Search history. |",
" | F4 | Search history with current input. |",
" | F1 | Show search help when in search mode. |",
" | F2 | Show history. |",
" | F3 | Clear history (need confirm). |",
" +-------------------------+--------------------------------------------------+",
" Control Commands",
" +-------------------------+--------------------------------------------------+",
" | Enter, Ctrl-J, Ctrl-M | EOL and accept line. |",
" | Ctrl-C, Ctrl-G | EOF and abort line. |",
" | Ctrl-D | EOF if line is empty. |",
" | Alt-R | Revert line. |",
" | Ctrl-Z | Suspend Job. (Linux Only, fg will resume edit) |",
" +-------------------------+--------------------------------------------------+",
" Note: If Alt-key doesn't work, an alternate way is to press ESC first then press key, see above ESC+Key.",
" Note: In multiple lines:",
" Up/Down and Ctrl/Alt-Up, Ctrl/Alt-Down will move between lines.",
" Up key will fetch history when cursor in first line or end of last line(for quick history move)",
" Down key will fetch history when cursor in last line.",
" Ctrl/Alt-Up, Ctrl/Alt-Down will just move between lines.",
NULL};
static char* s_search_help[] = {
"Patterns are separated by ' ', patter match is case insensitive:",
" (Hint: use Ctrl-Y/Ctrl-V/Insert to paste last paterns)",
" select: choose line including 'select'",
" -select: choose line excluding 'select'",
" \"select from\": choose line including \"select from\"",
" -\"select from\": choose line excluding \"select from\"",
"Example:",
" \"select from\" where -\"order by\" -limit: ",
" choose line including \"select from\" and 'where'",
" and excluding \"order by\" or 'limit'",
NULL};
/*****************************************************************************/
// Main API to read a line, return buf if get line, return NULL if EOF.
static char* crossline_readline_internal (const char *prompt, char *buf, int size, int has_input)
{
int not_support = 0, len;
if ((NULL == buf) || (size <= 1))
{ return NULL; }
if (!isatty(STDIN_FILENO)) { // input is not from a terminal
not_support = 1;
} else {
char *term = getenv("TERM");
if (NULL != term) {
if (!strcasecmp(term, "dumb") || !strcasecmp(term, "cons25") || !strcasecmp(term, "emacs"))
{ not_support = 1; }
}
}
if (not_support) {
if (NULL == fgets(buf, size, stdin))
{ return NULL; }
for (len = (int)strlen(buf); (len > 0) && (('\n'==buf[len-1]) || ('\r'==buf[len-1])); --len)
{ buf[len-1] = '\0'; }
return buf;
}
return crossline_readline_edit (buf, size, prompt, has_input, 0);
}
char* crossline_readline (const char *prompt, char *buf, int size)
{
return crossline_readline_internal (prompt, buf, size, 0);
}
char* crossline_readline2 (const char *prompt, char *buf, int size)
{
return crossline_readline_internal (prompt, buf, size, 1);
}
// Set move/cut word delimiter, defaut is all not digital and alphabetic characters.
void crossline_delimiter_set (const char *delim)
{
if (NULL != delim) {
strncpy (s_word_delimiter, delim, sizeof(s_word_delimiter) - 1);
s_word_delimiter[sizeof(s_word_delimiter) - 1] = '\0';
}
}
void crossline_history_show (void)
{
crossline_history_dump (stdout, 1, NULL, 0, isatty(STDIN_FILENO));
}
void crossline_history_clear (void)
{
memset (s_history_buf, 0, sizeof (s_history_buf));
s_history_id = 0;
}
int crossline_history_save (const char *filename)
{
if (NULL == filename) {
return -1;
} else {
FILE *file = fopen(filename, "wt");
if (file == NULL) { return -1; }
crossline_history_dump (file, 0, NULL, 0, 0);
fclose(file);
}
return 0;
}
int crossline_history_load (const char* filename)
{
int len;
char buf[CROSS_HISTORY_BUF_LEN];
FILE *file;
if (NULL == filename) { return -1; }
file = fopen(filename, "rt");
if (NULL == file) { return -1; }
while (NULL != fgets(buf, CROSS_HISTORY_BUF_LEN, file)) {
for (len = (int)strlen(buf); (len > 0) && (('\n'==buf[len-1]) || ('\r'==buf[len-1])); --len)
{ buf[len-1] = '\0'; }
if (len > 0) {
buf[CROSS_HISTORY_BUF_LEN-1] = '\0';
strcpy (s_history_buf[(s_history_id++) % CROSS_HISTORY_MAX_LINE], buf);
}
}
fclose(file);
return 0;
}
// Register completion callback.
void crossline_completion_register (crossline_completion_callback pCbFunc)
{
s_completion_callback = pCbFunc;
}
// Add completion in callback. Word is must, help for word is optional.
void crossline_completion_add_color (crossline_completions_t *pCompletions, const char *word,
crossline_color_e wcolor, const char *help, crossline_color_e hcolor)
{
if ((NULL != pCompletions) && (NULL != word) && (pCompletions->num < CROSS_COMPLET_MAX_LINE)) {
strncpy (pCompletions->word[pCompletions->num], word, CROSS_COMPLET_WORD_LEN);
pCompletions->word[pCompletions->num][CROSS_COMPLET_WORD_LEN - 1] = '\0';
pCompletions->color_word[pCompletions->num] = wcolor;
pCompletions->help[pCompletions->num][0] = '\0';
if (NULL != help) {
strncpy (pCompletions->help[pCompletions->num], help, CROSS_COMPLET_HELP_LEN);
pCompletions->help[pCompletions->num][CROSS_COMPLET_HELP_LEN - 1] = '\0';
pCompletions->color_help[pCompletions->num] = hcolor;
}
pCompletions->num++;
}
}
void crossline_completion_add (crossline_completions_t *pCompletions, const char *word, const char *help)
{
crossline_completion_add_color (pCompletions, word, CROSSLINE_COLOR_DEFAULT, help, CROSSLINE_COLOR_DEFAULT);
}
// Set syntax hints in callback.
void crossline_hints_set_color (crossline_completions_t *pCompletions, const char *hints, crossline_color_e color)
{
if ((NULL != pCompletions) && (NULL != hints)) {
strncpy (pCompletions->hints, hints, CROSS_COMPLET_HINT_LEN - 1);
pCompletions->hints[CROSS_COMPLET_HINT_LEN - 1] = '\0';
pCompletions->color_hints = color;
}
}
void crossline_hints_set (crossline_completions_t *pCompletions, const char *hints)
{
crossline_hints_set_color (pCompletions, hints, CROSSLINE_COLOR_DEFAULT);
}
/*****************************************************************************/
int crossline_paging_set (int enable)
{
int prev = s_paging_print_line >=0;
s_paging_print_line = enable ? 0 : -1;
return prev;
}
int crossline_paging_check (int line_len)
{
char *paging_hints = "*** Press <Space> or <Enter> to continue . . .";
int i, ch, rows, cols, len = (int)strlen(paging_hints);
if ((s_paging_print_line < 0) || !isatty(STDIN_FILENO) || !isatty(STDOUT_FILENO)) { return 0; }
crossline_screen_get (&rows, &cols);
s_paging_print_line += (line_len + cols - 1) / cols;
if (s_paging_print_line >= (rows - 1)) {
printf ("%s", paging_hints);
ch = crossline_getch();
if (0 == ch) { crossline_getch(); } // some terminal server may send 0 after Enter
// clear paging hints
for (i = 0; i < len; ++i) { printf ("\b"); }
for (i = 0; i < len; ++i) { printf (" "); }
for (i = 0; i < len; ++i) { printf ("\b"); }
s_paging_print_line = 0;
if ((' ' != ch) && (KEY_ENTER != ch) && (KEY_ENTER2 != ch)) {
return 1;
}
}
return 0;
}
/*****************************************************************************/
void crossline_prompt_color_set (crossline_color_e color)
{
s_prompt_color = color;
}
void crossline_screen_clear ()
{
int ret = system (s_crossline_win ? "cls" : "clear");
(void) ret;
}
#ifdef _WIN32 // Windows
int crossline_getch (void)
{
fflush (stdout);
return _getch();
}
void crossline_screen_get (int *pRows, int *pCols)
{
CONSOLE_SCREEN_BUFFER_INFO inf;
GetConsoleScreenBufferInfo (GetStdHandle(STD_OUTPUT_HANDLE), &inf);
*pCols = inf.srWindow.Right - inf.srWindow.Left + 1;
*pRows = inf.srWindow.Bottom - inf.srWindow.Top + 1;
*pCols = *pCols > 1 ? *pCols : 160;
*pRows = *pRows > 1 ? *pRows : 24;
}
int crossline_cursor_get (int *pRow, int *pCol)
{
CONSOLE_SCREEN_BUFFER_INFO inf;
GetConsoleScreenBufferInfo (GetStdHandle(STD_OUTPUT_HANDLE), &inf);
*pRow = inf.dwCursorPosition.Y - inf.srWindow.Top;
*pCol = inf.dwCursorPosition.X - inf.srWindow.Left;
return 0;
}
void crossline_cursor_set (int row, int col)
{
CONSOLE_SCREEN_BUFFER_INFO inf;
GetConsoleScreenBufferInfo (GetStdHandle(STD_OUTPUT_HANDLE), &inf);
inf.dwCursorPosition.Y = (SHORT)row + inf.srWindow.Top;
inf.dwCursorPosition.X = (SHORT)col + inf.srWindow.Left;
SetConsoleCursorPosition (GetStdHandle(STD_OUTPUT_HANDLE), inf.dwCursorPosition);
}
void crossline_cursor_move (int row_off, int col_off)
{
CONSOLE_SCREEN_BUFFER_INFO inf;
GetConsoleScreenBufferInfo (GetStdHandle(STD_OUTPUT_HANDLE), &inf);
inf.dwCursorPosition.Y += (SHORT)row_off;
inf.dwCursorPosition.X += (SHORT)col_off;
SetConsoleCursorPosition (GetStdHandle(STD_OUTPUT_HANDLE), inf.dwCursorPosition);
}
void crossline_cursor_hide (int bHide)
{
CONSOLE_CURSOR_INFO inf;
GetConsoleCursorInfo (GetStdHandle(STD_OUTPUT_HANDLE), &inf);
inf.bVisible = !bHide;
SetConsoleCursorInfo (GetStdHandle(STD_OUTPUT_HANDLE), &inf);
}
void crossline_color_set (crossline_color_e color)
{
CONSOLE_SCREEN_BUFFER_INFO info;
static WORD dft_wAttributes = 0;
WORD wAttributes = 0;
if (!dft_wAttributes) {
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &info);
dft_wAttributes = info.wAttributes;
}
if (CROSSLINE_FGCOLOR_DEFAULT == (color&CROSSLINE_FGCOLOR_MASK)) {
wAttributes |= dft_wAttributes & (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY);
} else {
wAttributes |= (color&CROSSLINE_FGCOLOR_BRIGHT) ? FOREGROUND_INTENSITY : 0;
switch (color&CROSSLINE_FGCOLOR_MASK) {
case CROSSLINE_FGCOLOR_RED: wAttributes |= FOREGROUND_RED; break;
case CROSSLINE_FGCOLOR_GREEN: wAttributes |= FOREGROUND_GREEN;break;
case CROSSLINE_FGCOLOR_BLUE: wAttributes |= FOREGROUND_BLUE; break;
case CROSSLINE_FGCOLOR_YELLOW: wAttributes |= FOREGROUND_RED | FOREGROUND_GREEN; break;
case CROSSLINE_FGCOLOR_MAGENTA: wAttributes |= FOREGROUND_RED | FOREGROUND_BLUE; break;
case CROSSLINE_FGCOLOR_CYAN: wAttributes |= FOREGROUND_GREEN | FOREGROUND_BLUE; break;
case CROSSLINE_FGCOLOR_WHITE: wAttributes |= FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;break;
}
}
if (CROSSLINE_BGCOLOR_DEFAULT == (color&CROSSLINE_BGCOLOR_MASK)) {
wAttributes |= dft_wAttributes & (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY);
} else {
wAttributes |= (color&CROSSLINE_BGCOLOR_BRIGHT) ? BACKGROUND_INTENSITY : 0;
switch (color&CROSSLINE_BGCOLOR_MASK) {
case CROSSLINE_BGCOLOR_RED: wAttributes |= BACKGROUND_RED; break;
case CROSSLINE_BGCOLOR_GREEN: wAttributes |= BACKGROUND_GREEN;break;
case CROSSLINE_BGCOLOR_BLUE: wAttributes |= BACKGROUND_BLUE; break;
case CROSSLINE_BGCOLOR_YELLOW: wAttributes |= BACKGROUND_RED | BACKGROUND_GREEN; break;
case CROSSLINE_BGCOLOR_MAGENTA: wAttributes |= BACKGROUND_RED | BACKGROUND_BLUE; break;
case CROSSLINE_BGCOLOR_CYAN: wAttributes |= BACKGROUND_GREEN | BACKGROUND_BLUE; break;
case CROSSLINE_BGCOLOR_WHITE: wAttributes |= BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE;break;
}
}
if (color & CROSSLINE_UNDERLINE)
{ wAttributes |= COMMON_LVB_UNDERSCORE; }
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), wAttributes);
}
#else // Linux
int crossline_getch ()
{
char ch = 0;
struct termios old_term, cur_term;
fflush (stdout);
if (tcgetattr(STDIN_FILENO, &old_term) < 0) { perror("tcsetattr"); }
cur_term = old_term;
cur_term.c_lflag &= ~(ICANON | ECHO | ISIG); // echoing off, canonical off, no signal chars
cur_term.c_cc[VMIN] = 1;
cur_term.c_cc[VTIME] = 0;
if (tcsetattr(STDIN_FILENO, TCSANOW, &cur_term) < 0) { perror("tcsetattr"); }
if (read(STDIN_FILENO, &ch, 1) < 0) { /* perror("read()"); */ } // signal will interrupt
if (tcsetattr(STDIN_FILENO, TCSADRAIN, &old_term) < 0) { perror("tcsetattr"); }
return ch;
}
void crossline_screen_get (int *pRows, int *pCols)
{
struct winsize ws = {};
(void)ioctl (1, TIOCGWINSZ, &ws);
*pCols = ws.ws_col;
*pRows = ws.ws_row;
*pCols = *pCols > 1 ? *pCols : 160;
*pRows = *pRows > 1 ? *pRows : 24;
}
int crossline_cursor_get (int *pRow, int *pCol)
{
int i;
char buf[32];
printf ("\e[6n");
for (i = 0; i < (char)sizeof(buf)-1; ++i) {
buf[i] = (char)crossline_getch ();
if ('R' == buf[i]) { break; }
}
buf[i] = '\0';
if (2 != sscanf (buf, "\e[%d;%dR", pRow, pCol)) { return -1; }
(*pRow)--; (*pCol)--;
return 0;
}
void crossline_cursor_set (int row, int col)
{
printf("\e[%d;%dH", row+1, col+1);
}
void crossline_cursor_move (int row_off, int col_off)
{
if (col_off > 0) { printf ("\e[%dC", col_off); }
else if (col_off < 0) { printf ("\e[%dD", -col_off); }
if (row_off > 0) { printf ("\e[%dB", row_off); }
else if (row_off < 0) { printf ("\e[%dA", -row_off); }
}
void crossline_cursor_hide (int bHide)
{
printf("\e[?25%c", bHide?'l':'h');
}
void crossline_color_set (crossline_color_e color)
{
if (!isatty(STDOUT_FILENO)) { return; }
printf ("\033[m");
if (CROSSLINE_FGCOLOR_DEFAULT != (color&CROSSLINE_FGCOLOR_MASK))
{ printf ("\033[%dm", 29 + (color&CROSSLINE_FGCOLOR_MASK) + ((color&CROSSLINE_FGCOLOR_BRIGHT)?60:0)); }
if (CROSSLINE_BGCOLOR_DEFAULT != (color&CROSSLINE_BGCOLOR_MASK))
{ printf ("\033[%dm", 39 + ((color&CROSSLINE_BGCOLOR_MASK)>>8) + ((color&CROSSLINE_BGCOLOR_BRIGHT)?60:0)); }
if (color & CROSSLINE_UNDERLINE)
{ printf ("\033[4m"); }
}
#endif // #ifdef _WIN32
/*****************************************************************************/
static void crossline_show_help (int show_search)
{
int i;
char **help = show_search ? s_search_help : s_crossline_help;
printf (" \b\n");
for (i = 0; NULL != help[i]; ++i) {
printf ("%s\n", help[i]);
if (crossline_paging_check ((int)strlen(help[i])+1))
{ break; }
}
}
static void str_to_lower (char *str)
{
for (; '\0' != *str; ++str)
{ *str = (char)tolower (*str); }
}
// Match including(no prefix) and excluding(with prefix: '-') patterns.
static int crossline_match_patterns (const char *str, char *word[], int num)
{
int i;
char buf[CROSS_HISTORY_BUF_LEN];
strncpy (buf, str, sizeof(buf) - 1);
buf[sizeof(buf) - 1] = '\0';
str_to_lower (buf);
for (i = 0; i < num; ++i) {
if ('-' == word[i][0]) {
if (NULL != strstr (buf, &word[i][1]))
{ return 0; }
} else if (NULL == strstr (buf, word[i]))
{ return 0; }
}
return 1;
}
// Split pattern string to individual pattern list, handle composite words embraced with " ".
static int crossline_split_patterns (char *patterns, char *pat_list[], int max)
{
int i, num = 0;
char *pch = patterns;
if (NULL == patterns) { return 0; }
while (' ' == *pch) { ++pch; }
while ((num < max) && (NULL != pch)) {
if (('"' == *pch) || (('-' == *pch) && ('"' == *(pch+1)))) {
if ('"' != *pch) { *(pch+1) = '-'; }
pat_list[num++] = ++pch;
if (NULL != (pch = strchr(pch, '"'))) {
*pch++ = '\0';
while (' ' == *pch) { ++pch; }
}
} else {
pat_list[num++] = pch;
if (NULL != (pch = strchr (pch, ' '))) {
*pch = '\0';
while (' ' == *(++pch)) ;
}
}
}
for (i = 0; i < num; ++i)
{ str_to_lower (pat_list[i]); }
return num;
}
// If patterns is not NULL, will filter history.
// If sel_id > 0, return the real id+1 in history buf, else return history number dumped.
static int crossline_history_dump (FILE *file, int print_id, char *patterns, int sel_id, int paging)
{
uint32_t i;
int id = 0, num=0;
char *pat_list[CROSS_HIS_MATCH_PAT_NUM], *history;
num = crossline_split_patterns (patterns, pat_list, CROSS_HIS_MATCH_PAT_NUM);
for (i = s_history_id; i < s_history_id + CROSS_HISTORY_MAX_LINE; ++i) {
history = s_history_buf[i % CROSS_HISTORY_MAX_LINE];
if ('\0' != history[0]) {
if ((NULL != patterns) && !crossline_match_patterns (history, pat_list, num))
{ continue; }
if (sel_id > 0) {
if (++id == sel_id)
{ return (i % CROSS_HISTORY_MAX_LINE) + 1; }
continue;
}
if (print_id) { fprintf (file, "%4d %s\n", ++id, history); }
else { fprintf (file, "%s\n", history); }
if (paging) {
if (crossline_paging_check ((int)strlen(history)+(print_id?7:1)))
{ break; }
}
}
}
return id;
}
// Search history, input will be initial search patterns.
static int crossline_history_search (char *input)
{
uint32_t his_id = 0, count;
char pattern[CROSS_HISTORY_BUF_LEN], buf[8] = "1";
printf (" \b\n");
if (NULL != input) {
strncpy (pattern, input, sizeof(pattern) - 1);
pattern[sizeof(pattern) - 1] = '\0';
}
// Get search patterns
if (NULL == crossline_readline_edit(pattern, sizeof (pattern), "Input Patterns <F1> help: ", (NULL!=input), 1))
{ return 0; }
strncpy (s_clip_buf, pattern, sizeof(s_clip_buf) - 1);
s_clip_buf[sizeof(s_clip_buf) - 1] = '\0';
count = crossline_history_dump (stdout, 1, pattern, 0, 1);
if (0 == count) { return 0; } // Nothing found, just return
// Get choice
if (NULL == crossline_readline_edit (buf, sizeof (buf), "Input history id: ", (1==count), 1))
{ return 0; }
his_id = atoi (buf);
if (('\0' != buf[0]) && ((his_id > count) || (his_id <= 0))) {
printf ("Invalid history id: %s\n", buf);
return 0;
}
return crossline_history_dump (stdout, 1, pattern, his_id, 0);
}
// Show completions returned by callback.
static int crossline_show_completions (crossline_completions_t *pCompletions)
{
int i, j, ret = 0, word_len = 0, with_help = 0, rows, cols, word_num;
if (('\0' != pCompletions->hints[0]) || (pCompletions->num > 0)) {
printf (" \b\n");
ret = 1;
}
// Print syntax hints.
if ('\0' != pCompletions->hints[0]) {
printf ("Please input: ");
crossline_color_set (pCompletions->color_hints);
printf ("%s", pCompletions->hints);
crossline_color_set (CROSSLINE_COLOR_DEFAULT);
printf ("\n");
}
if (0 == pCompletions->num) { return ret; }
for (i = 0; i < pCompletions->num; ++i) {
if ((int)strlen(pCompletions->word[i]) > word_len)
{ word_len = (int)strlen(pCompletions->word[i]); }
if ('\0' != pCompletions->help[i][0]) { with_help = 1; }
}
if (with_help) {
// Print words with help format.
for (i = 0; i < pCompletions->num; ++i) {
crossline_color_set (pCompletions->color_word[i]);
printf ("%s", pCompletions->word[i]);
for (j = 0; j < 4+word_len-(int)strlen(pCompletions->word[i]); ++j)
{ printf (" "); }
crossline_color_set (pCompletions->color_help[i]);
printf ("%s", pCompletions->help[i]);
crossline_color_set (CROSSLINE_COLOR_DEFAULT);
printf ("\n");
if (crossline_paging_check((int)strlen(pCompletions->help[i])+4+word_len+1))
{ break; }
}
return ret;
}
// Print words list in multiple columns.
crossline_screen_get (&rows, &cols);
word_num = (cols - 1 - word_len) / (word_len + 4) + 1;
for (i = 1; i <= pCompletions->num; ++i) {
crossline_color_set (pCompletions->color_word[i-1]);
printf ("%s", pCompletions->word[i-1]);
crossline_color_set (CROSSLINE_COLOR_DEFAULT);
for (j = 0; j < ((i%word_num)?4:0)+word_len-(int)strlen(pCompletions->word[i-1]); ++j)
{ printf (" "); }
if (0 == (i % word_num)) {
printf ("\n");
if (crossline_paging_check (word_len))
{ return ret; }
}
}
if (pCompletions->num % word_num) { printf ("\n"); }
return ret;
}
static int crossline_updown_move (const char *prompt, int *pCurPos, int *pCurNum, int off, int bForce)
{
int rows, cols, len = (int)strlen(prompt), cur_pos=*pCurPos;
crossline_screen_get (&rows, &cols);
if (!bForce && (*pCurPos == *pCurNum)) { return 0; } // at end of last line
if (off < 0) {
if ((*pCurPos+len)/cols == 0) { return 0; } // at first line
*pCurPos -= cols;
if (*pCurPos < 0) { *pCurPos = 0; }
crossline_cursor_move (-1, (*pCurPos+len)%cols-(cur_pos+len)%cols);
} else {
if ((*pCurPos+len)/cols == (*pCurNum+len)/cols) { return 0; } // at last line
*pCurPos += cols;
if (*pCurPos > *pCurNum) { *pCurPos = *pCurNum - 1; } // one char left to avoid history shortcut
crossline_cursor_move (1, (*pCurPos+len)%cols-(cur_pos+len)%cols);
}
return 1;
}
// Refreash current print line and move cursor to new_pos.
static void crossline_refreash (const char *prompt, char *buf, int *pCurPos, int *pCurNum, int new_pos, int new_num, int bChg)
{
int i, pos_row, pos_col, len = (int)strlen(prompt);
static int rows = 0, cols = 0;
if (bChg || !rows || s_crossline_win) { crossline_screen_get (&rows, &cols); }
if (!bChg) { // just move cursor
pos_row = (new_pos+len)/cols - (*pCurPos+len)/cols;
pos_col = (new_pos+len)%cols - (*pCurPos+len)%cols;
crossline_cursor_move (pos_row, pos_col);
} else {
buf[new_num] = '\0';
if (bChg > 1) { // refreash as less as possbile
printf ("%s", &buf[bChg-1]);
} else {
pos_row = (*pCurPos + len) / cols;
crossline_cursor_move (-pos_row, 0);
crossline_color_set (s_prompt_color);
printf ("\r%s", prompt);
crossline_color_set (CROSSLINE_COLOR_DEFAULT);
printf ("%s", buf);
}
if (!s_crossline_win && new_num>0 && !((new_num+len)%cols)) { printf("\n"); }
for (i=*pCurNum-new_num; i > 0; --i) { printf (" "); }
if (!s_crossline_win && *pCurNum>new_num && !((*pCurNum+len)%cols)) { printf("\n"); }
pos_row = (new_num+len)/cols - (*pCurNum+len)/cols;
if (pos_row < 0) { crossline_cursor_move (pos_row, 0); }
printf ("\r");
pos_row = (new_pos+len)/cols - (new_num+len)/cols;
crossline_cursor_move (pos_row, (new_pos+len)%cols);
}
*pCurPos = new_pos;
*pCurNum = new_num;
}
static void crossline_print (const char *prompt, char *buf, int *pCurPos, int *pCurNum, int new_pos, int new_num)
{
*pCurPos = *pCurNum = 0;
crossline_refreash (prompt, buf, pCurPos, pCurNum, new_pos, new_num, 1);
}
// Copy part text[cut_beg, cut_end] from src to dest
static void crossline_text_copy (char *dest, const char *src, int cut_beg, int cut_end)
{
int len = cut_end - cut_beg;
len = (len < CROSS_HISTORY_BUF_LEN) ? len : (CROSS_HISTORY_BUF_LEN - 1);
if (len > 0) {
memcpy (dest, &src[cut_beg], len);
dest[len] = '\0';
}
}
// Copy from history buffer to dest
static void crossline_history_copy (const char *prompt, char *buf, int size, int *pos, int *num, int history_id)
{
strncpy (buf, s_history_buf[history_id % CROSS_HISTORY_MAX_LINE], size - 1);
buf[size - 1] = '\0';
crossline_refreash (prompt, buf, pos, num, (int)strlen(buf), (int)strlen(buf), 1);
}
/*****************************************************************************/
// Convert ESC+Key to Alt-Key
static int crossline_key_esc2alt (int ch)
{
switch (ch) {
case KEY_DEL: ch = KEY_ALT_DEL; break;
case KEY_HOME: ch = KEY_ALT_HOME; break;
case KEY_END: ch = KEY_ALT_END; break;
case KEY_UP: ch = KEY_ALT_UP; break;
case KEY_DOWN: ch = KEY_ALT_DOWN; break;
case KEY_LEFT: ch = KEY_ALT_LEFT; break;
case KEY_RIGHT: ch = KEY_ALT_RIGHT; break;
case KEY_BACKSPACE: ch = KEY_ALT_BACKSPACE; break;
}
return ch;
}
// Map other function keys to main key
static int crossline_key_mapping (int ch)
{
switch (ch) {
#ifndef _WIN32
case KEY_HOME2: ch = KEY_HOME; break;
case KEY_END2: ch = KEY_END; break;
case KEY_CTRL_UP2: ch = KEY_CTRL_UP; break;
case KEY_CTRL_DOWN2: ch = KEY_CTRL_DOWN; break;
case KEY_CTRL_LEFT2: ch = KEY_CTRL_LEFT; break;
case KEY_CTRL_RIGHT2: ch = KEY_CTRL_RIGHT; break;
case KEY_F1_2: ch = KEY_F1; break;
case KEY_F2_2: ch = KEY_F2; break;
case KEY_F3_2: ch = KEY_F3; break;
case KEY_F4_2: ch = KEY_F4; break;
#endif
case KEY_DEL2: ch = KEY_BACKSPACE; break;
}
return ch;
}
#ifdef _WIN32 // Windows
// Read a KEY from keyboard, is_esc indicats whether it's a function key.
static int crossline_getkey (int *is_esc)
{
int ch = crossline_getch (), esc;
if ((GetKeyState (VK_CONTROL) & 0x8000) && (KEY_DEL2 == ch)) {
ch = KEY_CTRL_BACKSPACE;
} else if ((224 == ch) || (0 == ch)) {
*is_esc = 1;
ch = crossline_getch ();
ch = (GetKeyState (VK_MENU) & 0x8000) ? ALT_KEY(ch) : ch + (KEY_ESC<<8);
} else if (KEY_ESC == ch) { // Handle ESC+Key
*is_esc = 1;
ch = crossline_getkey (&esc);
ch = crossline_key_esc2alt (ch);
} else if (GetKeyState (VK_MENU) & 0x8000) {
*is_esc = 1; ch = ALT_KEY(ch);
}
return ch;
}
void crossline_winchg_reg (void) { }
#else // Linux
// Convert escape sequences to internal special function key
static int crossline_get_esckey (int ch)
{
int ch2;
if (0 == ch) { ch = crossline_getch (); }
if ('[' == ch) {
ch = crossline_getch ();
if ((ch>='0') && (ch<='6')) {