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Commit | Line | Data |
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d684c216 | 1 | /* |
04b3ea0e | 2 | * (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de> |
35edb766 | 3 | * |
d684c216 L |
4 | * (C) Copyright 2000 |
5 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
6 | * | |
7 | * Add to readline cmdline-editing by | |
8 | * (C) Copyright 2005 | |
9 | * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com> | |
10 | * | |
f32690e8 | 11 | * SPDX-License-Identifier: GPL-2.0 |
d684c216 L |
12 | */ |
13 | ||
8ed66016 | 14 | #include "cli_readline.h" |
d684c216 | 15 | #include "common.h" |
d684c216 L |
16 | #include <string.h> |
17 | #include <stdio.h> | |
a8b4c964 L |
18 | #include <stdlib.h> |
19 | #include <stdbool.h> | |
8506d791 | 20 | #include <ctype.h> |
d684c216 L |
21 | |
22 | #include "config.h" | |
23 | #include "con-utils.h" | |
8591c65b | 24 | #include "print-utils.h" |
d684c216 | 25 | #include "command.h" |
d684c216 | 26 | |
8506d791 L |
27 | |
28 | ||
e347ae07 L |
29 | char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */ |
30 | ||
31 | #define CTL_CH(c) ((c) - 'a' + 1) | |
32 | #define CTL_BACKSPACE ('\b') | |
33 | #define DEL ((char)255) | |
34 | #define DEL7 ((char)127) | |
35 | ||
36 | ||
8506d791 L |
37 | /************************************************************************************************/ |
38 | /* TODO: | |
39 | * | |
40 | */ | |
41 | ||
42 | #define ESC 0x1b | |
43 | ||
44 | #define KEY_TAB '\t' // TAB key | |
45 | #define KEY_CR '\r' // RETURN key | |
46 | #define KEY_BACKSPACE '\b' // Backspace key | |
47 | #define KEY_ESCAPE 0x1B // ESCAPE (pressed twice) | |
48 | ||
49 | #define KEY_DOWN 0x80 // Down arrow key | |
50 | #define KEY_UP 0x81 // Up arrow key | |
51 | #define KEY_LEFT 0x82 // Left arrow key | |
52 | #define KEY_RIGHT 0x83 // Right arrow key | |
53 | #define KEY_HOME 0x84 // Home key | |
54 | #define KEY_DC 0x85 // Delete character key | |
55 | #define KEY_IC 0x86 // Ins char/toggle ins mode key | |
56 | #define KEY_NPAGE 0x87 // Next-page key | |
57 | #define KEY_PPAGE 0x88 // Previous-page key | |
58 | #define KEY_END 0x89 // End key | |
59 | #define KEY_BTAB 0x8A // Back tab key | |
60 | #define KEY_F1 0x8B // Function key F1 | |
61 | #define KEY_F(n) (KEY_F1+(n)-1) // Space for additional 12 function keys | |
62 | ||
63 | ||
64 | struct fkey_tbl_s { | |
65 | const FLASH char *sequence; /* ESC Sequence */ | |
66 | int code; /* Keycode */ | |
67 | }; | |
68 | ||
69 | //typedef const FLASH struct fkey_tbl_s fkey_tbl_t; | |
70 | ||
71 | #define FKEY_TBL_ITEM(_seq, _code) { FSTR(#_seq), _code } | |
72 | ||
73 | ||
74 | ||
75 | static const FLASH struct fkey_tbl_s fkey_table[] = { | |
76 | ||
77 | FKEY_TBL_ITEM(B, KEY_DOWN), // Down arrow key | |
ef77033c | 78 | FKEY_TBL_ITEM(A, KEY_UP), // Up arrow key |
8506d791 | 79 | FKEY_TBL_ITEM(D, KEY_LEFT), // Left arrow key |
ef77033c | 80 | FKEY_TBL_ITEM(C, KEY_RIGHT), // Right arrow key |
8506d791 | 81 | FKEY_TBL_ITEM(1~, KEY_HOME), // Home key |
ef77033c L |
82 | FKEY_TBL_ITEM(3~, KEY_DC), // Delete character key |
83 | FKEY_TBL_ITEM(2~, KEY_IC), // Ins char/toggle ins mode key | |
84 | FKEY_TBL_ITEM(6~, KEY_NPAGE), // Next-page key | |
85 | FKEY_TBL_ITEM(5~, KEY_PPAGE), // Previous-page key | |
8506d791 L |
86 | FKEY_TBL_ITEM(4~, KEY_END), // End key |
87 | FKEY_TBL_ITEM(Z, KEY_BTAB), // Back tab key | |
3b841cea L |
88 | /* */ |
89 | FKEY_TBL_ITEM(H, KEY_HOME), // Home key | |
90 | FKEY_TBL_ITEM(F, KEY_END), // End key | |
8506d791 L |
91 | /* VT400: */ |
92 | FKEY_TBL_ITEM(11~, KEY_F(1)), // Function key F1 | |
93 | FKEY_TBL_ITEM(12~, KEY_F(2)), // Function key F2 | |
94 | FKEY_TBL_ITEM(13~, KEY_F(3)), // Function key F3 | |
95 | FKEY_TBL_ITEM(14~, KEY_F(4)), // Function key F4 | |
96 | FKEY_TBL_ITEM(15~, KEY_F(5)), // Function key F5 | |
3b841cea | 97 | /* Linux console */ |
8506d791 L |
98 | FKEY_TBL_ITEM([A, KEY_F(1)), // Function key F1 |
99 | FKEY_TBL_ITEM([B, KEY_F(2)), // Function key F2 | |
100 | FKEY_TBL_ITEM([C, KEY_F(3)), // Function key F3 | |
101 | FKEY_TBL_ITEM([D, KEY_F(4)), // Function key F4 | |
102 | FKEY_TBL_ITEM([E, KEY_F(5)), // Function key F5 | |
103 | ||
104 | FKEY_TBL_ITEM(17~, KEY_F(6)), // Function key F6 | |
105 | FKEY_TBL_ITEM(18~, KEY_F(7)), // Function key F7 | |
106 | FKEY_TBL_ITEM(19~, KEY_F(8)), // Function key F8 | |
107 | FKEY_TBL_ITEM(20~, KEY_F(9)), // Function key F9 | |
ef77033c L |
108 | FKEY_TBL_ITEM(21~, KEY_F(10)), // Function key F10 |
109 | FKEY_TBL_ITEM(23~, KEY_F(11)), // Function key F11 | |
110 | FKEY_TBL_ITEM(24~, KEY_F(12)), // Function key F12 | |
8506d791 L |
111 | { NULL } /* Mark end of table */ |
112 | }; | |
113 | ||
114 | ||
115 | ||
116 | typedef enum { | |
117 | STATE_GROUND, | |
118 | STATE_ESCAPE, | |
f6edf92b L |
119 | STATE_CSI_ENTRY, |
120 | STATE_SS3 | |
8506d791 L |
121 | } vtparse_state_t; |
122 | ||
123 | #define CHB_SIZE 15 | |
124 | ||
125 | static | |
126 | int vt_parse (void) | |
127 | { | |
128 | static vtparse_state_t state = STATE_GROUND; | |
129 | char buf[CHB_SIZE+1]; | |
130 | uint8_t param[2]; | |
131 | uint8_t i_buf; | |
132 | uint8_t i_param; | |
133 | int ch; | |
134 | ||
135 | ||
136 | while (1) { | |
137 | ch = my_getchar(1); | |
138 | // debug_getch(state, ch); | |
139 | ||
140 | switch (state) { | |
141 | case STATE_GROUND: | |
142 | if (ch == ESC) { | |
143 | state = STATE_ESCAPE; | |
144 | continue; | |
145 | } | |
146 | if (ch == 0x7F) // BACKSPACE on VT200 sends DEL char | |
147 | ch = KEY_BACKSPACE; // map it to '\b' | |
148 | break; | |
149 | case STATE_ESCAPE: | |
150 | if (ch < 0) | |
151 | continue; | |
152 | ||
153 | if (ch == '[') { | |
154 | state = STATE_CSI_ENTRY; | |
155 | param[0] = param[1] = 0; | |
156 | i_buf = 0; | |
157 | i_param = 0; | |
158 | continue; | |
159 | } | |
f6edf92b L |
160 | if (ch == 'O') { |
161 | state = STATE_SS3; | |
162 | continue; | |
163 | } | |
164 | state = STATE_GROUND; | |
165 | break; | |
166 | case STATE_SS3: | |
e1f1d450 | 167 | if (ch == 'F') |
f6edf92b | 168 | ch = KEY_END; |
e1f1d450 L |
169 | if (ch == 'H') |
170 | ch = KEY_HOME; | |
8506d791 L |
171 | state = STATE_GROUND; |
172 | break; | |
173 | case STATE_CSI_ENTRY: | |
174 | if (ch < 0) | |
175 | continue; | |
176 | ||
177 | buf[i_buf] = ch; | |
178 | if (i_buf < CHB_SIZE) | |
179 | i_buf++; | |
180 | if (ch == ';') { | |
181 | i_param++; | |
182 | continue; | |
183 | } | |
184 | if (isdigit(ch)) { | |
185 | if (i_param < 2) | |
186 | param[i_param] = param[i_param] * 10 + ch - '0'; | |
187 | continue; | |
188 | } | |
189 | if (ch >= '@' && ch <= '~' && ch != '[') { | |
190 | buf[i_buf] = '\0'; | |
191 | int_fast8_t i = 0; | |
192 | while (fkey_table[i].sequence) { | |
193 | if (! strcmp_P (buf, fkey_table[i].sequence)) { | |
194 | ch = fkey_table[i].code; | |
195 | break; | |
196 | } | |
197 | i++; | |
198 | } | |
199 | if (fkey_table[i].sequence == NULL) { | |
200 | ch = '$'; /* KEY_ESCAPE; */ | |
201 | } | |
202 | } | |
203 | state = STATE_GROUND; | |
204 | break; | |
205 | } | |
206 | break; /* while */ | |
207 | } | |
208 | ||
209 | return ch; | |
210 | } | |
211 | ||
212 | /************************************************************************************************/ | |
213 | ||
d684c216 L |
214 | /* |
215 | * cmdline-editing related codes from vivi. | |
216 | * Author: Janghoon Lyu <nandy@mizi.com> | |
217 | */ | |
218 | ||
d684c216 | 219 | |
db6a28d8 L |
220 | struct hist_node_s { |
221 | struct hist_node_s *next; | |
222 | char line[]; | |
223 | }; | |
224 | typedef struct hist_node_s hist_node; | |
225 | ||
d684c216 | 226 | |
db6a28d8 L |
227 | static hist_node *hist_head; |
228 | static hist_node *hist_cur; | |
d684c216 | 229 | |
e347ae07 L |
230 | static void hist_reset(void) |
231 | { | |
232 | hist_cur = hist_head; | |
233 | } | |
234 | ||
db6a28d8 | 235 | static hist_node *hist_search_node(char *line) |
d684c216 | 236 | { |
db6a28d8 | 237 | hist_node *p = hist_head; |
d684c216 | 238 | |
db6a28d8 L |
239 | while (p && strcmp(p->line, line)) |
240 | p = p->next; | |
241 | return p; | |
242 | } | |
243 | ||
244 | #if 0 | |
245 | static hist_node *hist_insert(char *line) | |
246 | { | |
247 | hist_node *p = (hist_node *) malloc(sizeof (hist_node) + strlen(line) + 1); | |
248 | ||
249 | if (p) { | |
250 | strcpy(p->line, line); | |
251 | p->next = hist_head; | |
252 | hist_head = p; | |
a8b4c964 | 253 | } |
db6a28d8 L |
254 | return p; |
255 | } | |
256 | #endif | |
257 | ||
258 | static hist_node *hist_new(char *line) | |
259 | { | |
260 | hist_node *p = (hist_node *) malloc(sizeof (hist_node) + strlen(line) + 1); | |
d684c216 | 261 | |
a8b4c964 | 262 | if (p) { |
db6a28d8 L |
263 | strcpy(p->line, line); |
264 | p->next = NULL; | |
265 | } | |
266 | return p; | |
267 | } | |
d684c216 | 268 | |
db6a28d8 L |
269 | static hist_node *hist_delete(void) |
270 | { | |
271 | hist_node *p = NULL; | |
272 | hist_node *q = hist_head; | |
a8b4c964 | 273 | |
db6a28d8 L |
274 | if (q) { |
275 | while(q->next) { | |
276 | p = q; | |
277 | q = q->next; | |
278 | } | |
279 | free(q); | |
280 | if (p) | |
281 | p->next = NULL; | |
a8b4c964 | 282 | } |
db6a28d8 | 283 | return p; |
d684c216 L |
284 | } |
285 | ||
db6a28d8 | 286 | static hist_node *hist_unlink(hist_node *pos) |
d684c216 | 287 | { |
db6a28d8 L |
288 | hist_node *p = NULL; |
289 | hist_node *q = hist_head; | |
d684c216 | 290 | |
db6a28d8 L |
291 | while(q && q != pos) { |
292 | p = q; | |
293 | q = q->next; | |
294 | } | |
295 | if (q) { | |
296 | if (p) | |
297 | p->next = q->next; | |
298 | else | |
299 | hist_head = q->next; | |
300 | q->next = NULL; | |
301 | } | |
302 | return q; | |
303 | } | |
d684c216 | 304 | |
db6a28d8 L |
305 | static uint_fast8_t hist_count(void) |
306 | { | |
307 | hist_node *p = hist_head; | |
308 | uint_fast8_t n = 0; | |
d684c216 | 309 | |
db6a28d8 L |
310 | while (p) { |
311 | ++n; | |
312 | p = p->next; | |
d684c216 | 313 | } |
db6a28d8 L |
314 | return n; |
315 | } | |
d684c216 | 316 | |
db6a28d8 L |
317 | static hist_node *cread_add_to_hist(char *line) |
318 | { | |
319 | hist_node * p; | |
320 | ||
321 | p = hist_search_node(line); | |
322 | if (p) | |
323 | hist_unlink(p); | |
324 | else | |
325 | p = hist_new(line); | |
326 | ||
327 | if (p) { | |
328 | p->next = hist_head; | |
329 | hist_head = p; | |
330 | } | |
331 | ||
332 | if (hist_count() > CONFIG_SYS_HIST_MAX) | |
333 | hist_delete(); | |
334 | return p; | |
d684c216 L |
335 | } |
336 | ||
db6a28d8 | 337 | static char *hist_prev(void) |
d684c216 | 338 | { |
db6a28d8 | 339 | hist_node *p = hist_cur; |
d684c216 | 340 | |
db6a28d8 | 341 | if (p == NULL) |
d684c216 | 342 | return NULL; |
e347ae07 | 343 | hist_cur = p->next; |
d684c216 | 344 | |
db6a28d8 L |
345 | return p->line; |
346 | } | |
d684c216 | 347 | |
db6a28d8 L |
348 | static char *hist_next(void) |
349 | { | |
350 | hist_node *p = NULL; | |
351 | hist_node *q = hist_head; | |
352 | ||
353 | if(q == hist_cur) | |
354 | return NULL; | |
355 | ||
356 | while(q->next != hist_cur) { | |
357 | p = q; | |
358 | q = q->next; | |
359 | } | |
360 | hist_cur = q; | |
d684c216 | 361 | |
db6a28d8 | 362 | return p ? p->line : ""; |
d684c216 L |
363 | } |
364 | ||
e347ae07 L |
365 | static char *hist_search_backward(char* buf, uint8_t num) |
366 | { | |
367 | hist_node *p = hist_cur; | |
368 | ||
369 | if (p == NULL) | |
370 | return NULL; | |
371 | ||
372 | while (p->next && strncmp(p->line, buf, num)) | |
373 | p = p->next; | |
d684c216 | 374 | |
e347ae07 L |
375 | if(!strncmp(p->line, buf, num)) { |
376 | hist_cur = p->next; | |
377 | return p->line; | |
378 | } | |
379 | return NULL; | |
d684c216 L |
380 | } |
381 | ||
e347ae07 L |
382 | static char *hist_search_forward (char* buf, uint8_t num) |
383 | { | |
384 | hist_node *p = NULL; | |
385 | hist_node *match = NULL; | |
386 | hist_node *q = hist_head; | |
387 | ||
388 | if(q == hist_cur) | |
389 | return NULL; | |
390 | ||
391 | while(q->next != hist_cur) { | |
392 | p = q; | |
393 | q = q->next; | |
394 | if (p && !strncmp(p->line, buf, num)) | |
395 | match = p; | |
396 | } | |
397 | ||
398 | if(match) { | |
399 | hist_cur = match->next; | |
400 | return match->line; | |
401 | } | |
402 | return NULL; | |
d684c216 L |
403 | } |
404 | ||
e347ae07 L |
405 | static void putnstr(char *str, int n) |
406 | { | |
407 | /* printf_P(PSTR("%.*s"), (int)n, str) */ | |
408 | while (n-- && *str) | |
409 | putchar(*str++); | |
410 | } | |
411 | ||
412 | static void getcmd_putch(int ch) { putchar(ch);} | |
413 | static int getcmd_getch(void) { return vt_parse();} | |
414 | static void getcmd_cbeep(void) { getcmd_putch('\a');} | |
415 | ||
416 | static void beginning_of_line(uint8_t *num) | |
417 | { | |
418 | while (*num) { | |
419 | getcmd_putch(CTL_BACKSPACE); | |
420 | (*num)--; | |
421 | } | |
422 | } | |
423 | ||
424 | static void erase_to_eol(uint_fast8_t *num, uint_fast8_t *eol_num) | |
425 | { | |
426 | if (*num < *eol_num) { | |
427 | /* printf_P(PSTR("%*S"), (int)(*eol_num - *num), PSTR("")); */ | |
428 | print_blanks(*eol_num - *num); | |
429 | do { | |
430 | getcmd_putch(CTL_BACKSPACE); | |
431 | } while (--(*eol_num) > *num); | |
432 | } | |
433 | } | |
434 | ||
435 | static void refresh_to_eol(char *buf, uint_fast8_t *num, uint_fast8_t *eol_num) | |
436 | { | |
437 | if (*num < *eol_num) { | |
438 | uint_fast8_t wlen = *eol_num - *num; | |
439 | putnstr(buf + *num, wlen); | |
440 | *num = *eol_num; | |
441 | } | |
d684c216 L |
442 | } |
443 | ||
a8b4c964 L |
444 | static void cread_add_char(char ichar, bool insert, uint_fast8_t *num, |
445 | uint_fast8_t *eol_num, char *buf, uint_fast8_t len) | |
d684c216 | 446 | { |
a8b4c964 | 447 | uint_fast8_t wlen; |
d684c216 L |
448 | |
449 | /* room ??? */ | |
450 | if (insert || *num == *eol_num) { | |
451 | if (*eol_num > len - 1) { | |
452 | getcmd_cbeep(); | |
453 | return; | |
454 | } | |
455 | (*eol_num)++; | |
456 | } | |
457 | ||
458 | if (insert) { | |
459 | wlen = *eol_num - *num; | |
460 | if (wlen > 1) | |
461 | memmove(&buf[*num+1], &buf[*num], wlen-1); | |
462 | ||
463 | buf[*num] = ichar; | |
464 | putnstr(buf + *num, wlen); | |
465 | (*num)++; | |
466 | while (--wlen) | |
467 | getcmd_putch(CTL_BACKSPACE); | |
468 | } else { | |
469 | /* echo the character */ | |
d684c216 | 470 | buf[*num] = ichar; |
4912667b | 471 | putnstr(buf + *num, 1); |
d684c216 L |
472 | (*num)++; |
473 | } | |
474 | } | |
475 | ||
4912667b L |
476 | static void cread_add_str(char *str, bool insert, uint_fast8_t *num, |
477 | uint_fast8_t *eol_num, char *buf, uint_fast8_t len) | |
d684c216 | 478 | { |
4912667b L |
479 | char c; |
480 | ||
481 | while ((c = *str++) != '\0') | |
482 | cread_add_char(c, insert, num, eol_num, buf, len); | |
d684c216 L |
483 | } |
484 | ||
8ed66016 | 485 | static int cread_line(const FLASH char *const prompt, char *buf, |
4912667b | 486 | uint_fast8_t len, bool enable_history) |
d684c216 | 487 | { |
a8b4c964 L |
488 | uint_fast8_t num = 0; |
489 | uint_fast8_t eol_num = 0; | |
a8b4c964 | 490 | bool insert = 1; |
d684c216 L |
491 | |
492 | (void) prompt; | |
493 | ||
4912667b L |
494 | if (buf[0]) |
495 | cread_add_str(buf, 1, &num, &eol_num, buf, len); | |
d684c216 | 496 | |
e347ae07 L |
497 | hist_reset(); |
498 | ||
d684c216 | 499 | while (1) { |
ef77033c | 500 | int ichar = getcmd_getch(); |
d684c216 L |
501 | |
502 | if ((ichar == '\n') || (ichar == '\r')) { | |
503 | putchar('\n'); | |
504 | break; | |
505 | } | |
506 | ||
d684c216 L |
507 | |
508 | switch (ichar) { | |
d684c216 | 509 | |
8506d791 | 510 | case KEY_HOME: |
d684c216 | 511 | case CTL_CH('a'): |
e347ae07 | 512 | beginning_of_line(&num); |
d684c216 | 513 | break; |
a8b4c964 | 514 | case CTL_CH('c'): /* ^C - break */ |
4912667b | 515 | putchar('\n'); |
a8b4c964 | 516 | *buf = '\0'; /* discard input */ |
d684c216 | 517 | return -1; |
8506d791 | 518 | case KEY_RIGHT: |
a8b4c964 | 519 | case CTL_CH('f'): /* forward-char */ |
d684c216 L |
520 | if (num < eol_num) { |
521 | getcmd_putch(buf[num]); | |
522 | num++; | |
523 | } | |
524 | break; | |
8506d791 | 525 | case KEY_LEFT: |
a8b4c964 | 526 | case CTL_CH('b'): /* backward-char */ |
d684c216 L |
527 | if (num) { |
528 | getcmd_putch(CTL_BACKSPACE); | |
529 | num--; | |
530 | } | |
531 | break; | |
8506d791 | 532 | case KEY_DC: |
a8b4c964 | 533 | case CTL_CH('d'): /* delete-char */ |
d684c216 | 534 | if (num < eol_num) { |
ef77033c | 535 | uint_fast8_t wlen = eol_num - num - 1; |
d684c216 L |
536 | if (wlen) { |
537 | memmove(&buf[num], &buf[num+1], wlen); | |
538 | putnstr(buf + num, wlen); | |
539 | } | |
540 | ||
541 | getcmd_putch(' '); | |
542 | do { | |
543 | getcmd_putch(CTL_BACKSPACE); | |
544 | } while (wlen--); | |
545 | eol_num--; | |
546 | } | |
547 | break; | |
a8b4c964 | 548 | case CTL_CH('k'): /* kill-line */ |
e347ae07 | 549 | erase_to_eol(&num, &eol_num); |
d684c216 | 550 | break; |
ed7d7fd3 | 551 | case KEY_END: |
d684c216 | 552 | case CTL_CH('e'): |
e347ae07 | 553 | refresh_to_eol(buf, &num, &eol_num); |
d684c216 | 554 | break; |
8506d791 | 555 | case KEY_IC: |
d684c216 L |
556 | case CTL_CH('o'): |
557 | insert = !insert; | |
558 | break; | |
559 | case CTL_CH('x'): | |
a8b4c964 | 560 | case CTL_CH('u'): /* kill-whole-line */ |
e347ae07 L |
561 | beginning_of_line(&num); |
562 | erase_to_eol(&num, &eol_num); | |
d684c216 L |
563 | break; |
564 | case DEL: | |
565 | case DEL7: | |
a8b4c964 | 566 | case 8: /* backward-delete-char */ |
d684c216 | 567 | if (num) { |
4912667b L |
568 | uint_fast8_t wlen = eol_num - --num; |
569 | buf[eol_num] = ' '; | |
d684c216 L |
570 | memmove(&buf[num], &buf[num+1], wlen); |
571 | getcmd_putch(CTL_BACKSPACE); | |
572 | putnstr(buf + num, wlen); | |
d684c216 L |
573 | do { |
574 | getcmd_putch(CTL_BACKSPACE); | |
4912667b | 575 | } while (--wlen); |
d684c216 L |
576 | eol_num--; |
577 | } | |
578 | break; | |
8506d791 | 579 | case KEY_UP: |
a8b4c964 | 580 | case CTL_CH('p'): /* previous-history */ |
8506d791 | 581 | case KEY_DOWN: |
a8b4c964 | 582 | case CTL_CH('n'): /* next-history */ |
8ed66016 L |
583 | if (enable_history) { |
584 | char *hline; | |
585 | ||
586 | if (ichar == CTL_CH('p') || ichar == KEY_UP) | |
587 | hline = hist_prev(); | |
588 | else | |
589 | hline = hist_next(); | |
590 | ||
591 | if (hline) { | |
8ed66016 | 592 | /* first, go home */ |
e347ae07 | 593 | beginning_of_line(&num); |
4912667b L |
594 | /* overwrite current line */ |
595 | cread_add_str(hline, 0, &num, &eol_num, buf, len); | |
8ed66016 | 596 | /* erase to end of line */ |
e347ae07 | 597 | erase_to_eol(&num, &eol_num); |
8ed66016 | 598 | |
8ed66016 L |
599 | } else { |
600 | getcmd_cbeep(); | |
601 | } | |
602 | } else { | |
d684c216 | 603 | getcmd_cbeep(); |
d684c216 | 604 | } |
8ed66016 | 605 | break; |
ef77033c L |
606 | case KEY_PPAGE: /* history-search-backward */ |
607 | case KEY_NPAGE: /* history-search-forward */ | |
608 | if (enable_history) { | |
609 | char *hline; | |
ef77033c | 610 | if (ichar == KEY_PPAGE) |
e347ae07 | 611 | hline = hist_search_backward(buf, num); |
ef77033c | 612 | else |
e347ae07 | 613 | hline = hist_search_forward(buf, num); |
ef77033c L |
614 | |
615 | if (hline) { | |
4912667b L |
616 | uint_fast8_t num2 = num; |
617 | /* overwrite current line from cursor position */ | |
618 | cread_add_str(hline+num, 0, &num2, &eol_num, buf, len); | |
ef77033c | 619 | /* erase to end of line */ |
4912667b L |
620 | erase_to_eol(&num2, &eol_num); |
621 | /* cursor back */ | |
622 | while (num2-- > num) | |
e347ae07 | 623 | getcmd_putch(CTL_BACKSPACE); |
ef77033c L |
624 | } else { |
625 | getcmd_cbeep(); | |
626 | } | |
627 | } else { | |
628 | getcmd_cbeep(); | |
629 | } | |
630 | break; | |
d684c216 L |
631 | #ifdef CONFIG_AUTO_COMPLETE |
632 | case '\t': { | |
633 | int num2, col; | |
634 | ||
635 | /* do not autocomplete when in the middle */ | |
636 | if (num < eol_num) { | |
637 | getcmd_cbeep(); | |
638 | break; | |
639 | } | |
640 | ||
641 | buf[num] = '\0'; | |
642 | col = strlen_P(prompt) + eol_num; | |
643 | num2 = num; | |
644 | if (cmd_auto_complete(prompt, buf, &num2, &col)) { | |
645 | col = num2 - num; | |
646 | num += col; | |
647 | eol_num += col; | |
648 | } | |
649 | break; | |
650 | } | |
651 | #endif | |
652 | default: | |
8506d791 | 653 | if (isprint(ichar)) |
4912667b | 654 | cread_add_char(ichar, insert, &num, &eol_num, buf, len); |
d684c216 L |
655 | break; |
656 | } | |
657 | } | |
4912667b L |
658 | while (eol_num && buf[eol_num-1] == ' ') |
659 | --eol_num; /* remove trailing blanks */ | |
d684c216 L |
660 | buf[eol_num] = '\0'; /* lose the newline */ |
661 | ||
e347ae07 L |
662 | if (enable_history && buf[0]) |
663 | cread_add_to_hist(buf); | |
4912667b | 664 | return eol_num; |
d684c216 L |
665 | } |
666 | ||
d684c216 L |
667 | /****************************************************************************/ |
668 | ||
8ed66016 | 669 | int cli_readline(const FLASH char *const prompt, bool enable_history) |
d684c216 L |
670 | { |
671 | /* | |
672 | * If console_buffer isn't 0-length the user will be prompted to modify | |
673 | * it instead of entering it from scratch as desired. | |
674 | */ | |
675 | console_buffer[0] = '\0'; | |
676 | ||
4912667b L |
677 | if (prompt) |
678 | my_puts_P(prompt); | |
679 | ||
680 | return cread_line(prompt, console_buffer, CONFIG_SYS_CBSIZE, enable_history); | |
d684c216 | 681 | } |