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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 | |
17 | #include "config.h" | |
18 | #include "con-utils.h" | |
8591c65b | 19 | #include "print-utils.h" |
d684c216 | 20 | #include "command.h" |
1d390146 L |
21 | #include "debug.h" |
22 | ||
23 | ||
24 | #define DEBUG_READLINE 0 /* set to 1 to debug */ | |
25 | ||
26 | #define debug_readline(fmt, args...) \ | |
27 | debug_cond(DEBUG_READLINE, fmt, ##args) | |
d684c216 | 28 | |
8506d791 L |
29 | |
30 | ||
e347ae07 L |
31 | char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */ |
32 | ||
33 | #define CTL_CH(c) ((c) - 'a' + 1) | |
34 | #define CTL_BACKSPACE ('\b') | |
35 | #define DEL ((char)255) | |
36 | #define DEL7 ((char)127) | |
37 | ||
38 | ||
8506d791 L |
39 | /************************************************************************************************/ |
40 | /* TODO: | |
41 | * | |
42 | */ | |
43 | ||
44 | #define ESC 0x1b | |
45 | ||
46 | #define KEY_TAB '\t' // TAB key | |
47 | #define KEY_CR '\r' // RETURN key | |
48 | #define KEY_BACKSPACE '\b' // Backspace key | |
49 | #define KEY_ESCAPE 0x1B // ESCAPE (pressed twice) | |
50 | ||
51 | #define KEY_DOWN 0x80 // Down arrow key | |
52 | #define KEY_UP 0x81 // Up arrow key | |
53 | #define KEY_LEFT 0x82 // Left arrow key | |
54 | #define KEY_RIGHT 0x83 // Right arrow key | |
55 | #define KEY_HOME 0x84 // Home key | |
56 | #define KEY_DC 0x85 // Delete character key | |
57 | #define KEY_IC 0x86 // Ins char/toggle ins mode key | |
58 | #define KEY_NPAGE 0x87 // Next-page key | |
59 | #define KEY_PPAGE 0x88 // Previous-page key | |
60 | #define KEY_END 0x89 // End key | |
61 | #define KEY_BTAB 0x8A // Back tab key | |
62 | #define KEY_F1 0x8B // Function key F1 | |
63 | #define KEY_F(n) (KEY_F1+(n)-1) // Space for additional 12 function keys | |
64 | ||
65 | ||
66 | struct fkey_tbl_s { | |
67 | const FLASH char *sequence; /* ESC Sequence */ | |
68 | int code; /* Keycode */ | |
69 | }; | |
70 | ||
71 | //typedef const FLASH struct fkey_tbl_s fkey_tbl_t; | |
72 | ||
73 | #define FKEY_TBL_ITEM(_seq, _code) { FSTR(#_seq), _code } | |
74 | ||
75 | ||
76 | ||
77 | static const FLASH struct fkey_tbl_s fkey_table[] = { | |
78 | ||
79 | FKEY_TBL_ITEM(B, KEY_DOWN), // Down arrow key | |
ef77033c | 80 | FKEY_TBL_ITEM(A, KEY_UP), // Up arrow key |
8506d791 | 81 | FKEY_TBL_ITEM(D, KEY_LEFT), // Left arrow key |
ef77033c | 82 | FKEY_TBL_ITEM(C, KEY_RIGHT), // Right arrow key |
8506d791 | 83 | FKEY_TBL_ITEM(1~, KEY_HOME), // Home key |
ef77033c L |
84 | FKEY_TBL_ITEM(3~, KEY_DC), // Delete character key |
85 | FKEY_TBL_ITEM(2~, KEY_IC), // Ins char/toggle ins mode key | |
86 | FKEY_TBL_ITEM(6~, KEY_NPAGE), // Next-page key | |
87 | FKEY_TBL_ITEM(5~, KEY_PPAGE), // Previous-page key | |
8506d791 L |
88 | FKEY_TBL_ITEM(4~, KEY_END), // End key |
89 | FKEY_TBL_ITEM(Z, KEY_BTAB), // Back tab key | |
3b841cea L |
90 | /* */ |
91 | FKEY_TBL_ITEM(H, KEY_HOME), // Home key | |
92 | FKEY_TBL_ITEM(F, KEY_END), // End key | |
8506d791 L |
93 | /* VT400: */ |
94 | FKEY_TBL_ITEM(11~, KEY_F(1)), // Function key F1 | |
95 | FKEY_TBL_ITEM(12~, KEY_F(2)), // Function key F2 | |
96 | FKEY_TBL_ITEM(13~, KEY_F(3)), // Function key F3 | |
97 | FKEY_TBL_ITEM(14~, KEY_F(4)), // Function key F4 | |
98 | FKEY_TBL_ITEM(15~, KEY_F(5)), // Function key F5 | |
3b841cea | 99 | /* Linux console */ |
8506d791 L |
100 | FKEY_TBL_ITEM([A, KEY_F(1)), // Function key F1 |
101 | FKEY_TBL_ITEM([B, KEY_F(2)), // Function key F2 | |
102 | FKEY_TBL_ITEM([C, KEY_F(3)), // Function key F3 | |
103 | FKEY_TBL_ITEM([D, KEY_F(4)), // Function key F4 | |
104 | FKEY_TBL_ITEM([E, KEY_F(5)), // Function key F5 | |
105 | ||
106 | FKEY_TBL_ITEM(17~, KEY_F(6)), // Function key F6 | |
107 | FKEY_TBL_ITEM(18~, KEY_F(7)), // Function key F7 | |
108 | FKEY_TBL_ITEM(19~, KEY_F(8)), // Function key F8 | |
109 | FKEY_TBL_ITEM(20~, KEY_F(9)), // Function key F9 | |
ef77033c L |
110 | FKEY_TBL_ITEM(21~, KEY_F(10)), // Function key F10 |
111 | FKEY_TBL_ITEM(23~, KEY_F(11)), // Function key F11 | |
112 | FKEY_TBL_ITEM(24~, KEY_F(12)), // Function key F12 | |
8506d791 L |
113 | { NULL } /* Mark end of table */ |
114 | }; | |
115 | ||
116 | ||
117 | ||
118 | typedef enum { | |
119 | STATE_GROUND, | |
120 | STATE_ESCAPE, | |
f6edf92b L |
121 | STATE_CSI_ENTRY, |
122 | STATE_SS3 | |
8506d791 L |
123 | } vtparse_state_t; |
124 | ||
125 | #define CHB_SIZE 15 | |
126 | ||
127 | static | |
128 | int vt_parse (void) | |
129 | { | |
130 | static vtparse_state_t state = STATE_GROUND; | |
131 | char buf[CHB_SIZE+1]; | |
132 | uint8_t param[2]; | |
f1e16f88 | 133 | uint8_t i_buf = 0; |
8506d791 L |
134 | uint8_t i_param; |
135 | int ch; | |
136 | ||
137 | ||
138 | while (1) { | |
139 | ch = my_getchar(1); | |
140 | // debug_getch(state, ch); | |
141 | ||
142 | switch (state) { | |
143 | case STATE_GROUND: | |
144 | if (ch == ESC) { | |
145 | state = STATE_ESCAPE; | |
146 | continue; | |
147 | } | |
148 | if (ch == 0x7F) // BACKSPACE on VT200 sends DEL char | |
149 | ch = KEY_BACKSPACE; // map it to '\b' | |
150 | break; | |
151 | case STATE_ESCAPE: | |
152 | if (ch < 0) | |
153 | continue; | |
154 | ||
155 | if (ch == '[') { | |
156 | state = STATE_CSI_ENTRY; | |
157 | param[0] = param[1] = 0; | |
158 | i_buf = 0; | |
159 | i_param = 0; | |
160 | continue; | |
161 | } | |
f6edf92b L |
162 | if (ch == 'O') { |
163 | state = STATE_SS3; | |
164 | continue; | |
165 | } | |
166 | state = STATE_GROUND; | |
167 | break; | |
168 | case STATE_SS3: | |
e1f1d450 | 169 | if (ch == 'F') |
f6edf92b | 170 | ch = KEY_END; |
e1f1d450 L |
171 | if (ch == 'H') |
172 | ch = KEY_HOME; | |
8506d791 L |
173 | state = STATE_GROUND; |
174 | break; | |
175 | case STATE_CSI_ENTRY: | |
176 | if (ch < 0) | |
177 | continue; | |
178 | ||
179 | buf[i_buf] = ch; | |
180 | if (i_buf < CHB_SIZE) | |
181 | i_buf++; | |
182 | if (ch == ';') { | |
183 | i_param++; | |
184 | continue; | |
185 | } | |
186 | if (isdigit(ch)) { | |
187 | if (i_param < 2) | |
188 | param[i_param] = param[i_param] * 10 + ch - '0'; | |
189 | continue; | |
190 | } | |
191 | if (ch >= '@' && ch <= '~' && ch != '[') { | |
192 | buf[i_buf] = '\0'; | |
193 | int_fast8_t i = 0; | |
194 | while (fkey_table[i].sequence) { | |
195 | if (! strcmp_P (buf, fkey_table[i].sequence)) { | |
196 | ch = fkey_table[i].code; | |
197 | break; | |
198 | } | |
199 | i++; | |
200 | } | |
201 | if (fkey_table[i].sequence == NULL) { | |
202 | ch = '$'; /* KEY_ESCAPE; */ | |
203 | } | |
204 | } | |
205 | state = STATE_GROUND; | |
206 | break; | |
207 | } | |
208 | break; /* while */ | |
209 | } | |
210 | ||
211 | return ch; | |
212 | } | |
213 | ||
214 | /************************************************************************************************/ | |
215 | ||
d684c216 L |
216 | /* |
217 | * cmdline-editing related codes from vivi. | |
218 | * Author: Janghoon Lyu <nandy@mizi.com> | |
219 | */ | |
220 | ||
d684c216 | 221 | |
1d390146 L |
222 | char histbuf[CONFIG_SYS_HISTSIZE+1]; |
223 | #define HISTBUFE (histbuf+CONFIG_SYS_HISTSIZE) | |
d684c216 | 224 | |
1d390146 L |
225 | static char *hist_head; |
226 | static char *hist_cur; | |
d684c216 | 227 | |
e347ae07 L |
228 | static void hist_reset(void) |
229 | { | |
1d390146 L |
230 | if (hist_head == NULL) |
231 | hist_head = HISTBUFE; | |
e347ae07 L |
232 | hist_cur = hist_head; |
233 | } | |
234 | ||
1d390146 | 235 | static char *hist_entry_next(char *p) |
d684c216 | 236 | { |
1d390146 L |
237 | if (*p) |
238 | while (*p++); | |
d684c216 | 239 | |
db6a28d8 L |
240 | return p; |
241 | } | |
242 | ||
1d390146 | 243 | static char *hist_entry_prev(char *p) |
db6a28d8 | 244 | { |
1d390146 L |
245 | if (p == hist_head) |
246 | return NULL; | |
247 | ||
248 | --p; | |
249 | while (p != hist_head && *(p-1) != 0) | |
250 | --p; | |
db6a28d8 | 251 | |
db6a28d8 L |
252 | return p; |
253 | } | |
db6a28d8 | 254 | |
1d390146 | 255 | static char *hist_search_entry(char *line) |
db6a28d8 | 256 | { |
1d390146 | 257 | char *p = hist_head; |
d684c216 | 258 | |
1d390146 L |
259 | while (*p && strcmp(p, line)) |
260 | p = hist_entry_next(p); | |
261 | return *p ? p : NULL; | |
db6a28d8 | 262 | } |
d684c216 | 263 | |
1d390146 | 264 | static char *hist_delete(size_t amount) |
db6a28d8 | 265 | { |
1d390146 | 266 | char *p; |
a8b4c964 | 267 | |
1d390146 L |
268 | p = HISTBUFE - amount; |
269 | if (p < hist_head) | |
270 | p = hist_head; | |
271 | ||
272 | while (p > hist_head && *(p-1)) | |
273 | --p; | |
274 | ||
275 | if (p == hist_head) | |
276 | hist_head = HISTBUFE; | |
277 | else { | |
278 | size_t shift = HISTBUFE - p; | |
279 | size_t len = p - hist_head; | |
280 | hist_head = memmove(hist_head + shift, hist_head, len); | |
a8b4c964 | 281 | } |
1d390146 | 282 | return hist_head; |
d684c216 L |
283 | } |
284 | ||
1d390146 | 285 | static char *hist_delete_entry(char *entry) |
d684c216 | 286 | { |
1d390146 L |
287 | size_t shift = strlen(entry) + 1; |
288 | size_t len = entry - hist_head; | |
d684c216 | 289 | |
1d390146 L |
290 | hist_head = memmove(hist_head + shift, hist_head, len); |
291 | ||
292 | return hist_head; | |
db6a28d8 | 293 | } |
d684c216 | 294 | |
1d390146 L |
295 | |
296 | static char *hist_add_entry(char *line) | |
db6a28d8 | 297 | { |
1d390146 L |
298 | char *p = hist_head; |
299 | ||
300 | if (p == NULL) | |
301 | p = HISTBUFE; | |
302 | ||
303 | char *q = p - strlen(line) - 1; | |
304 | if (q < histbuf) | |
305 | q = histbuf; | |
306 | ||
307 | strlcpy(q, line, p - q); | |
308 | ||
309 | hist_head = q; | |
310 | ||
311 | return hist_head; | |
312 | } | |
313 | ||
314 | static uint_fast8_t hist_get_count(void) | |
315 | { | |
316 | char *p = hist_head; | |
db6a28d8 | 317 | uint_fast8_t n = 0; |
d684c216 | 318 | |
1d390146 | 319 | while (*p) { |
db6a28d8 | 320 | ++n; |
1d390146 | 321 | while (*p++); |
d684c216 | 322 | } |
db6a28d8 L |
323 | return n; |
324 | } | |
d684c216 | 325 | |
1d390146 | 326 | static int hist_get_size(void) |
db6a28d8 | 327 | { |
1d390146 L |
328 | return HISTBUFE - hist_head; |
329 | } | |
db6a28d8 | 330 | |
1d390146 L |
331 | static char *cread_add_to_hist(char *line) |
332 | { | |
333 | char *p; | |
db6a28d8 | 334 | |
1d390146 L |
335 | p = hist_search_entry(line); |
336 | if (p) | |
337 | hist_delete_entry(p); | |
338 | else { | |
339 | size_t free = hist_head - histbuf; | |
340 | if (free < strlen(line) + 1) | |
341 | hist_delete(strlen(line) + 1 - free); | |
db6a28d8 | 342 | } |
1d390146 | 343 | hist_add_entry(line); |
db6a28d8 | 344 | |
db6a28d8 | 345 | return p; |
d684c216 L |
346 | } |
347 | ||
db6a28d8 | 348 | static char *hist_prev(void) |
d684c216 | 349 | { |
1d390146 | 350 | char *p = hist_cur; |
d684c216 | 351 | |
1d390146 | 352 | if (*p == '\0') |
d684c216 | 353 | return NULL; |
1d390146 | 354 | hist_cur = hist_entry_next(p); |
d684c216 | 355 | |
1d390146 | 356 | return p; |
db6a28d8 | 357 | } |
d684c216 | 358 | |
db6a28d8 L |
359 | static char *hist_next(void) |
360 | { | |
1d390146 | 361 | char *p = hist_cur; |
db6a28d8 | 362 | |
1d390146 | 363 | if(p == hist_head) |
db6a28d8 L |
364 | return NULL; |
365 | ||
1d390146 L |
366 | p = hist_entry_prev(p); |
367 | hist_cur = p; | |
d684c216 | 368 | |
1d390146 | 369 | return p == hist_head ? "" : hist_entry_prev(p); |
d684c216 L |
370 | } |
371 | ||
e347ae07 L |
372 | static char *hist_search_backward(char* buf, uint8_t num) |
373 | { | |
1d390146 | 374 | char *p = hist_cur; |
e347ae07 | 375 | |
1d390146 | 376 | if (*p == '\0') |
e347ae07 L |
377 | return NULL; |
378 | ||
1d390146 L |
379 | while (*p && strncmp(p, buf, num)) |
380 | p = hist_entry_next(p); | |
d684c216 | 381 | |
1d390146 L |
382 | if(!strncmp(p, buf, num)) { |
383 | hist_cur = hist_entry_next(p); | |
384 | return p; | |
e347ae07 | 385 | } |
1d390146 | 386 | |
e347ae07 | 387 | return NULL; |
d684c216 L |
388 | } |
389 | ||
e347ae07 L |
390 | static char *hist_search_forward (char* buf, uint8_t num) |
391 | { | |
1d390146 | 392 | char *p = hist_cur; |
e347ae07 | 393 | |
1d390146 L |
394 | if(p != hist_head && (p = hist_entry_prev(p)) != NULL) { |
395 | do { | |
396 | p = hist_entry_prev(p); | |
397 | } while (p && strncmp(p, buf, num) != 0); | |
e347ae07 | 398 | |
1d390146 L |
399 | //if(!strncmp(p, buf, num)) { |
400 | if(p) { | |
401 | hist_cur = hist_entry_next(p); | |
402 | return p; | |
403 | } | |
e347ae07 L |
404 | } |
405 | ||
e347ae07 | 406 | return NULL; |
d684c216 L |
407 | } |
408 | ||
e347ae07 L |
409 | static void putnstr(char *str, int n) |
410 | { | |
411 | /* printf_P(PSTR("%.*s"), (int)n, str) */ | |
412 | while (n-- && *str) | |
413 | putchar(*str++); | |
414 | } | |
415 | ||
416 | static void getcmd_putch(int ch) { putchar(ch);} | |
417 | static int getcmd_getch(void) { return vt_parse();} | |
418 | static void getcmd_cbeep(void) { getcmd_putch('\a');} | |
419 | ||
420 | static void beginning_of_line(uint8_t *num) | |
421 | { | |
422 | while (*num) { | |
423 | getcmd_putch(CTL_BACKSPACE); | |
424 | (*num)--; | |
425 | } | |
426 | } | |
427 | ||
428 | static void erase_to_eol(uint_fast8_t *num, uint_fast8_t *eol_num) | |
429 | { | |
430 | if (*num < *eol_num) { | |
431 | /* printf_P(PSTR("%*S"), (int)(*eol_num - *num), PSTR("")); */ | |
432 | print_blanks(*eol_num - *num); | |
433 | do { | |
434 | getcmd_putch(CTL_BACKSPACE); | |
435 | } while (--(*eol_num) > *num); | |
436 | } | |
437 | } | |
438 | ||
439 | static void refresh_to_eol(char *buf, uint_fast8_t *num, uint_fast8_t *eol_num) | |
440 | { | |
441 | if (*num < *eol_num) { | |
442 | uint_fast8_t wlen = *eol_num - *num; | |
443 | putnstr(buf + *num, wlen); | |
444 | *num = *eol_num; | |
445 | } | |
d684c216 L |
446 | } |
447 | ||
a8b4c964 L |
448 | static void cread_add_char(char ichar, bool insert, uint_fast8_t *num, |
449 | uint_fast8_t *eol_num, char *buf, uint_fast8_t len) | |
d684c216 | 450 | { |
a8b4c964 | 451 | uint_fast8_t wlen; |
d684c216 L |
452 | |
453 | /* room ??? */ | |
454 | if (insert || *num == *eol_num) { | |
455 | if (*eol_num > len - 1) { | |
456 | getcmd_cbeep(); | |
457 | return; | |
458 | } | |
459 | (*eol_num)++; | |
460 | } | |
461 | ||
462 | if (insert) { | |
463 | wlen = *eol_num - *num; | |
464 | if (wlen > 1) | |
465 | memmove(&buf[*num+1], &buf[*num], wlen-1); | |
466 | ||
467 | buf[*num] = ichar; | |
468 | putnstr(buf + *num, wlen); | |
469 | (*num)++; | |
470 | while (--wlen) | |
471 | getcmd_putch(CTL_BACKSPACE); | |
472 | } else { | |
473 | /* echo the character */ | |
d684c216 | 474 | buf[*num] = ichar; |
4912667b | 475 | putnstr(buf + *num, 1); |
d684c216 L |
476 | (*num)++; |
477 | } | |
478 | } | |
479 | ||
4912667b L |
480 | static void cread_add_str(char *str, bool insert, uint_fast8_t *num, |
481 | uint_fast8_t *eol_num, char *buf, uint_fast8_t len) | |
d684c216 | 482 | { |
4912667b L |
483 | char c; |
484 | ||
485 | while ((c = *str++) != '\0') | |
486 | cread_add_char(c, insert, num, eol_num, buf, len); | |
d684c216 L |
487 | } |
488 | ||
8ed66016 | 489 | static int cread_line(const FLASH char *const prompt, char *buf, |
4912667b | 490 | uint_fast8_t len, bool enable_history) |
d684c216 | 491 | { |
a8b4c964 L |
492 | uint_fast8_t num = 0; |
493 | uint_fast8_t eol_num = 0; | |
a8b4c964 | 494 | bool insert = 1; |
d684c216 L |
495 | |
496 | (void) prompt; | |
497 | ||
4912667b L |
498 | if (buf[0]) |
499 | cread_add_str(buf, 1, &num, &eol_num, buf, len); | |
d684c216 | 500 | |
e347ae07 L |
501 | hist_reset(); |
502 | ||
d684c216 | 503 | while (1) { |
ef77033c | 504 | int ichar = getcmd_getch(); |
d684c216 L |
505 | |
506 | if ((ichar == '\n') || (ichar == '\r')) { | |
507 | putchar('\n'); | |
508 | break; | |
509 | } | |
510 | ||
d684c216 L |
511 | |
512 | switch (ichar) { | |
d684c216 | 513 | |
8506d791 | 514 | case KEY_HOME: |
d684c216 | 515 | case CTL_CH('a'): |
e347ae07 | 516 | beginning_of_line(&num); |
d684c216 | 517 | break; |
a8b4c964 | 518 | case CTL_CH('c'): /* ^C - break */ |
4912667b | 519 | putchar('\n'); |
a8b4c964 | 520 | *buf = '\0'; /* discard input */ |
d684c216 | 521 | return -1; |
8506d791 | 522 | case KEY_RIGHT: |
a8b4c964 | 523 | case CTL_CH('f'): /* forward-char */ |
d684c216 L |
524 | if (num < eol_num) { |
525 | getcmd_putch(buf[num]); | |
526 | num++; | |
527 | } | |
528 | break; | |
8506d791 | 529 | case KEY_LEFT: |
a8b4c964 | 530 | case CTL_CH('b'): /* backward-char */ |
d684c216 L |
531 | if (num) { |
532 | getcmd_putch(CTL_BACKSPACE); | |
533 | num--; | |
534 | } | |
535 | break; | |
8506d791 | 536 | case KEY_DC: |
a8b4c964 | 537 | case CTL_CH('d'): /* delete-char */ |
d684c216 | 538 | if (num < eol_num) { |
ef77033c | 539 | uint_fast8_t wlen = eol_num - num - 1; |
d684c216 L |
540 | if (wlen) { |
541 | memmove(&buf[num], &buf[num+1], wlen); | |
542 | putnstr(buf + num, wlen); | |
543 | } | |
544 | ||
545 | getcmd_putch(' '); | |
546 | do { | |
547 | getcmd_putch(CTL_BACKSPACE); | |
548 | } while (wlen--); | |
549 | eol_num--; | |
550 | } | |
551 | break; | |
a8b4c964 | 552 | case CTL_CH('k'): /* kill-line */ |
e347ae07 | 553 | erase_to_eol(&num, &eol_num); |
d684c216 | 554 | break; |
ed7d7fd3 | 555 | case KEY_END: |
d684c216 | 556 | case CTL_CH('e'): |
e347ae07 | 557 | refresh_to_eol(buf, &num, &eol_num); |
d684c216 | 558 | break; |
8506d791 | 559 | case KEY_IC: |
d684c216 L |
560 | case CTL_CH('o'): |
561 | insert = !insert; | |
562 | break; | |
563 | case CTL_CH('x'): | |
a8b4c964 | 564 | case CTL_CH('u'): /* kill-whole-line */ |
e347ae07 L |
565 | beginning_of_line(&num); |
566 | erase_to_eol(&num, &eol_num); | |
d684c216 L |
567 | break; |
568 | case DEL: | |
569 | case DEL7: | |
a8b4c964 | 570 | case 8: /* backward-delete-char */ |
d684c216 | 571 | if (num) { |
4912667b L |
572 | uint_fast8_t wlen = eol_num - --num; |
573 | buf[eol_num] = ' '; | |
d684c216 L |
574 | memmove(&buf[num], &buf[num+1], wlen); |
575 | getcmd_putch(CTL_BACKSPACE); | |
576 | putnstr(buf + num, wlen); | |
d684c216 L |
577 | do { |
578 | getcmd_putch(CTL_BACKSPACE); | |
4912667b | 579 | } while (--wlen); |
d684c216 L |
580 | eol_num--; |
581 | } | |
582 | break; | |
8506d791 | 583 | case KEY_UP: |
a8b4c964 | 584 | case CTL_CH('p'): /* previous-history */ |
8506d791 | 585 | case KEY_DOWN: |
a8b4c964 | 586 | case CTL_CH('n'): /* next-history */ |
8ed66016 L |
587 | if (enable_history) { |
588 | char *hline; | |
589 | ||
590 | if (ichar == CTL_CH('p') || ichar == KEY_UP) | |
591 | hline = hist_prev(); | |
592 | else | |
593 | hline = hist_next(); | |
594 | ||
595 | if (hline) { | |
8ed66016 | 596 | /* first, go home */ |
e347ae07 | 597 | beginning_of_line(&num); |
4912667b L |
598 | /* overwrite current line */ |
599 | cread_add_str(hline, 0, &num, &eol_num, buf, len); | |
8ed66016 | 600 | /* erase to end of line */ |
e347ae07 | 601 | erase_to_eol(&num, &eol_num); |
8ed66016 | 602 | |
8ed66016 L |
603 | } else { |
604 | getcmd_cbeep(); | |
605 | } | |
606 | } else { | |
d684c216 | 607 | getcmd_cbeep(); |
d684c216 | 608 | } |
8ed66016 | 609 | break; |
ef77033c L |
610 | case KEY_PPAGE: /* history-search-backward */ |
611 | case KEY_NPAGE: /* history-search-forward */ | |
612 | if (enable_history) { | |
613 | char *hline; | |
ef77033c | 614 | if (ichar == KEY_PPAGE) |
e347ae07 | 615 | hline = hist_search_backward(buf, num); |
ef77033c | 616 | else |
e347ae07 | 617 | hline = hist_search_forward(buf, num); |
ef77033c L |
618 | |
619 | if (hline) { | |
4912667b L |
620 | uint_fast8_t num2 = num; |
621 | /* overwrite current line from cursor position */ | |
622 | cread_add_str(hline+num, 0, &num2, &eol_num, buf, len); | |
ef77033c | 623 | /* erase to end of line */ |
4912667b L |
624 | erase_to_eol(&num2, &eol_num); |
625 | /* cursor back */ | |
626 | while (num2-- > num) | |
e347ae07 | 627 | getcmd_putch(CTL_BACKSPACE); |
ef77033c L |
628 | } else { |
629 | getcmd_cbeep(); | |
630 | } | |
631 | } else { | |
632 | getcmd_cbeep(); | |
633 | } | |
634 | break; | |
d684c216 L |
635 | #ifdef CONFIG_AUTO_COMPLETE |
636 | case '\t': { | |
637 | int num2, col; | |
638 | ||
639 | /* do not autocomplete when in the middle */ | |
640 | if (num < eol_num) { | |
641 | getcmd_cbeep(); | |
642 | break; | |
643 | } | |
644 | ||
645 | buf[num] = '\0'; | |
646 | col = strlen_P(prompt) + eol_num; | |
647 | num2 = num; | |
648 | if (cmd_auto_complete(prompt, buf, &num2, &col)) { | |
649 | col = num2 - num; | |
650 | num += col; | |
651 | eol_num += col; | |
652 | } | |
653 | break; | |
654 | } | |
655 | #endif | |
656 | default: | |
8506d791 | 657 | if (isprint(ichar)) |
4912667b | 658 | cread_add_char(ichar, insert, &num, &eol_num, buf, len); |
d684c216 L |
659 | break; |
660 | } | |
661 | } | |
4912667b L |
662 | while (eol_num && buf[eol_num-1] == ' ') |
663 | --eol_num; /* remove trailing blanks */ | |
d684c216 L |
664 | buf[eol_num] = '\0'; /* lose the newline */ |
665 | ||
1d390146 L |
666 | uint_fast8_t i = 0; |
667 | while (buf[i] == ' ') | |
668 | ++i; /* remove leading blanks */ | |
669 | if (i) { | |
670 | eol_num -= i; | |
671 | memmove(buf, buf+i, eol_num+1); | |
672 | } | |
673 | ||
674 | debug_readline("### hist_head: %p, hist_cur: %p\n", hist_head, hist_cur); | |
675 | if (enable_history && buf[0]) { | |
e347ae07 | 676 | cread_add_to_hist(buf); |
1d390146 L |
677 | debug_readline("### hist_head: %p, hist_cur: %p, hist_size: %3d, hist_count: %2d\n", |
678 | hist_head, hist_cur, hist_get_size(), hist_get_count()); | |
679 | } | |
4912667b | 680 | return eol_num; |
d684c216 L |
681 | } |
682 | ||
d684c216 L |
683 | /****************************************************************************/ |
684 | ||
8ed66016 | 685 | int cli_readline(const FLASH char *const prompt, bool enable_history) |
d684c216 L |
686 | { |
687 | /* | |
688 | * If console_buffer isn't 0-length the user will be prompted to modify | |
689 | * it instead of entering it from scratch as desired. | |
690 | */ | |
691 | console_buffer[0] = '\0'; | |
692 | ||
4912667b L |
693 | if (prompt) |
694 | my_puts_P(prompt); | |
695 | ||
696 | return cread_line(prompt, console_buffer, CONFIG_SYS_CBSIZE, enable_history); | |
d684c216 | 697 | } |