Tom Rini | 83d290c | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 2 | /* |
| 3 | * (C) Copyright 2000 |
| 4 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 5 | * |
| 6 | * Add to readline cmdline-editing by |
| 7 | * (C) Copyright 2005 |
| 8 | * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com> |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | #include <common.h> |
Simon Glass | 0098e17 | 2014-04-10 20:01:30 -0600 | [diff] [blame] | 12 | #include <bootretry.h> |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 13 | #include <cli.h> |
Simon Glass | 0914011 | 2020-05-10 11:40:03 -0600 | [diff] [blame] | 14 | #include <command.h> |
Simon Glass | 1045315 | 2019-11-14 12:57:30 -0700 | [diff] [blame] | 15 | #include <time.h> |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 16 | #include <watchdog.h> |
Simon Glass | 401d1c4 | 2020-10-30 21:38:53 -0600 | [diff] [blame] | 17 | #include <asm/global_data.h> |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 18 | |
| 19 | DECLARE_GLOBAL_DATA_PTR; |
| 20 | |
| 21 | static const char erase_seq[] = "\b \b"; /* erase sequence */ |
| 22 | static const char tab_seq[] = " "; /* used to expand TABs */ |
| 23 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 24 | char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */ |
| 25 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 26 | static char *delete_char (char *buffer, char *p, int *colp, int *np, int plen) |
| 27 | { |
| 28 | char *s; |
| 29 | |
| 30 | if (*np == 0) |
| 31 | return p; |
| 32 | |
| 33 | if (*(--p) == '\t') { /* will retype the whole line */ |
| 34 | while (*colp > plen) { |
| 35 | puts(erase_seq); |
| 36 | (*colp)--; |
| 37 | } |
| 38 | for (s = buffer; s < p; ++s) { |
| 39 | if (*s == '\t') { |
| 40 | puts(tab_seq + ((*colp) & 07)); |
| 41 | *colp += 8 - ((*colp) & 07); |
| 42 | } else { |
| 43 | ++(*colp); |
| 44 | putc(*s); |
| 45 | } |
| 46 | } |
| 47 | } else { |
| 48 | puts(erase_seq); |
| 49 | (*colp)--; |
| 50 | } |
| 51 | (*np)--; |
| 52 | |
| 53 | return p; |
| 54 | } |
| 55 | |
| 56 | #ifdef CONFIG_CMDLINE_EDITING |
| 57 | |
| 58 | /* |
| 59 | * cmdline-editing related codes from vivi. |
| 60 | * Author: Janghoon Lyu <nandy@mizi.com> |
| 61 | */ |
| 62 | |
| 63 | #define putnstr(str, n) printf("%.*s", (int)n, str) |
| 64 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 65 | #define CTL_BACKSPACE ('\b') |
| 66 | #define DEL ((char)255) |
| 67 | #define DEL7 ((char)127) |
| 68 | #define CREAD_HIST_CHAR ('!') |
| 69 | |
| 70 | #define getcmd_putch(ch) putc(ch) |
Heinrich Schuchardt | c670aee | 2020-10-07 18:11:48 +0200 | [diff] [blame] | 71 | #define getcmd_getch() getchar() |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 72 | #define getcmd_cbeep() getcmd_putch('\a') |
| 73 | |
Sean Anderson | 069f0d7 | 2022-08-30 16:40:37 -0400 | [diff] [blame] | 74 | #ifdef CONFIG_SPL_BUILD |
| 75 | #define HIST_MAX 3 |
| 76 | #define HIST_SIZE 32 |
| 77 | #else |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 78 | #define HIST_MAX 20 |
| 79 | #define HIST_SIZE CONFIG_SYS_CBSIZE |
Sean Anderson | 069f0d7 | 2022-08-30 16:40:37 -0400 | [diff] [blame] | 80 | #endif |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 81 | |
| 82 | static int hist_max; |
| 83 | static int hist_add_idx; |
| 84 | static int hist_cur = -1; |
| 85 | static unsigned hist_num; |
| 86 | |
| 87 | static char *hist_list[HIST_MAX]; |
| 88 | static char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */ |
| 89 | |
| 90 | #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) |
| 91 | |
Simon Glass | dcc18ce | 2023-10-01 19:13:09 -0600 | [diff] [blame] | 92 | static void getcmd_putchars(int count, int ch) |
| 93 | { |
| 94 | int i; |
| 95 | |
| 96 | for (i = 0; i < count; i++) |
| 97 | getcmd_putch(ch); |
| 98 | } |
| 99 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 100 | static void hist_init(void) |
| 101 | { |
| 102 | int i; |
| 103 | |
| 104 | hist_max = 0; |
| 105 | hist_add_idx = 0; |
| 106 | hist_cur = -1; |
| 107 | hist_num = 0; |
| 108 | |
| 109 | for (i = 0; i < HIST_MAX; i++) { |
| 110 | hist_list[i] = hist_lines[i]; |
| 111 | hist_list[i][0] = '\0'; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | static void cread_add_to_hist(char *line) |
| 116 | { |
| 117 | strcpy(hist_list[hist_add_idx], line); |
| 118 | |
| 119 | if (++hist_add_idx >= HIST_MAX) |
| 120 | hist_add_idx = 0; |
| 121 | |
| 122 | if (hist_add_idx > hist_max) |
| 123 | hist_max = hist_add_idx; |
| 124 | |
| 125 | hist_num++; |
| 126 | } |
| 127 | |
| 128 | static char *hist_prev(void) |
| 129 | { |
| 130 | char *ret; |
| 131 | int old_cur; |
| 132 | |
| 133 | if (hist_cur < 0) |
| 134 | return NULL; |
| 135 | |
| 136 | old_cur = hist_cur; |
| 137 | if (--hist_cur < 0) |
| 138 | hist_cur = hist_max; |
| 139 | |
| 140 | if (hist_cur == hist_add_idx) { |
| 141 | hist_cur = old_cur; |
| 142 | ret = NULL; |
| 143 | } else { |
| 144 | ret = hist_list[hist_cur]; |
| 145 | } |
| 146 | |
| 147 | return ret; |
| 148 | } |
| 149 | |
| 150 | static char *hist_next(void) |
| 151 | { |
| 152 | char *ret; |
| 153 | |
| 154 | if (hist_cur < 0) |
| 155 | return NULL; |
| 156 | |
| 157 | if (hist_cur == hist_add_idx) |
| 158 | return NULL; |
| 159 | |
| 160 | if (++hist_cur > hist_max) |
| 161 | hist_cur = 0; |
| 162 | |
| 163 | if (hist_cur == hist_add_idx) |
| 164 | ret = ""; |
| 165 | else |
| 166 | ret = hist_list[hist_cur]; |
| 167 | |
| 168 | return ret; |
| 169 | } |
| 170 | |
Simon Glass | 33eb0b9 | 2023-10-01 19:13:06 -0600 | [diff] [blame] | 171 | void cread_print_hist_list(void) |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 172 | { |
| 173 | int i; |
Simon Glass | fedd372 | 2023-10-01 19:13:10 -0600 | [diff] [blame] | 174 | uint n; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 175 | |
| 176 | n = hist_num - hist_max; |
| 177 | |
| 178 | i = hist_add_idx + 1; |
| 179 | while (1) { |
| 180 | if (i > hist_max) |
| 181 | i = 0; |
| 182 | if (i == hist_add_idx) |
| 183 | break; |
| 184 | printf("%s\n", hist_list[i]); |
| 185 | n++; |
| 186 | i++; |
| 187 | } |
| 188 | } |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 189 | |
| 190 | #define BEGINNING_OF_LINE() { \ |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 191 | while (cls->num) { \ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 192 | getcmd_putch(CTL_BACKSPACE); \ |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 193 | cls->num--; \ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 194 | } \ |
| 195 | } |
| 196 | |
| 197 | #define ERASE_TO_EOL() { \ |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 198 | if (cls->num < cls->eol_num) { \ |
| 199 | printf("%*s", (int)(cls->eol_num - cls->num), ""); \ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 200 | do { \ |
| 201 | getcmd_putch(CTL_BACKSPACE); \ |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 202 | } while (--cls->eol_num > cls->num); \ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 203 | } \ |
| 204 | } |
| 205 | |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 206 | #define REFRESH_TO_EOL() { \ |
| 207 | if (cls->num < cls->eol_num) { \ |
| 208 | uint wlen = cls->eol_num - cls->num; \ |
| 209 | putnstr(buf + cls->num, wlen); \ |
| 210 | cls->num = cls->eol_num; \ |
| 211 | } \ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 212 | } |
| 213 | |
Simon Glass | fedd372 | 2023-10-01 19:13:10 -0600 | [diff] [blame] | 214 | static void cread_add_char(char ichar, int insert, uint *num, |
| 215 | uint *eol_num, char *buf, uint len) |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 216 | { |
Simon Glass | fedd372 | 2023-10-01 19:13:10 -0600 | [diff] [blame] | 217 | uint wlen; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 218 | |
| 219 | /* room ??? */ |
| 220 | if (insert || *num == *eol_num) { |
| 221 | if (*eol_num > len - 1) { |
| 222 | getcmd_cbeep(); |
| 223 | return; |
| 224 | } |
| 225 | (*eol_num)++; |
| 226 | } |
| 227 | |
| 228 | if (insert) { |
| 229 | wlen = *eol_num - *num; |
| 230 | if (wlen > 1) |
| 231 | memmove(&buf[*num+1], &buf[*num], wlen-1); |
| 232 | |
| 233 | buf[*num] = ichar; |
| 234 | putnstr(buf + *num, wlen); |
| 235 | (*num)++; |
| 236 | while (--wlen) |
| 237 | getcmd_putch(CTL_BACKSPACE); |
| 238 | } else { |
| 239 | /* echo the character */ |
| 240 | wlen = 1; |
| 241 | buf[*num] = ichar; |
| 242 | putnstr(buf + *num, wlen); |
| 243 | (*num)++; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | static void cread_add_str(char *str, int strsize, int insert, |
Simon Glass | fedd372 | 2023-10-01 19:13:10 -0600 | [diff] [blame] | 248 | uint *num, uint *eol_num, char *buf, uint len) |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 249 | { |
| 250 | while (strsize--) { |
| 251 | cread_add_char(*str, insert, num, eol_num, buf, len); |
| 252 | str++; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | static int cread_line(const char *const prompt, char *buf, unsigned int *len, |
| 257 | int timeout) |
| 258 | { |
Simon Glass | b08e9d4 | 2023-01-06 08:52:20 -0600 | [diff] [blame] | 259 | struct cli_ch_state s_cch, *cch = &s_cch; |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 260 | struct cli_line_state s_cls, *cls = &s_cls; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 261 | char ichar; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 262 | int init_len = strlen(buf); |
| 263 | int first = 1; |
| 264 | |
Simon Glass | b08e9d4 | 2023-01-06 08:52:20 -0600 | [diff] [blame] | 265 | cli_ch_init(cch); |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 266 | memset(cls, '\0', sizeof(struct cli_line_state)); |
| 267 | cls->insert = true; |
Simon Glass | b08e9d4 | 2023-01-06 08:52:20 -0600 | [diff] [blame] | 268 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 269 | if (init_len) |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 270 | cread_add_str(buf, init_len, 1, &cls->num, &cls->eol_num, buf, |
| 271 | *len); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 272 | |
| 273 | while (1) { |
Simon Glass | b08e9d4 | 2023-01-06 08:52:20 -0600 | [diff] [blame] | 274 | /* Check for saved characters */ |
| 275 | ichar = cli_ch_process(cch, 0); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 276 | |
Simon Glass | b08e9d4 | 2023-01-06 08:52:20 -0600 | [diff] [blame] | 277 | if (!ichar) { |
| 278 | if (bootretry_tstc_timeout()) |
| 279 | return -2; /* timed out */ |
| 280 | if (first && timeout) { |
| 281 | u64 etime = endtick(timeout); |
| 282 | |
| 283 | while (!tstc()) { /* while no incoming data */ |
| 284 | if (get_ticks() >= etime) |
| 285 | return -2; /* timed out */ |
| 286 | schedule(); |
| 287 | } |
| 288 | first = 0; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 289 | } |
Simon Glass | b08e9d4 | 2023-01-06 08:52:20 -0600 | [diff] [blame] | 290 | |
| 291 | ichar = getcmd_getch(); |
Simon Glass | be0169f | 2023-03-28 08:34:14 +1300 | [diff] [blame] | 292 | ichar = cli_ch_process(cch, ichar); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 293 | } |
| 294 | |
Patrick Delaunay | 555e378 | 2018-08-03 13:38:45 +0200 | [diff] [blame] | 295 | /* ichar=0x0 when error occurs in U-Boot getc */ |
| 296 | if (!ichar) |
| 297 | continue; |
| 298 | |
Simon Glass | b08e9d4 | 2023-01-06 08:52:20 -0600 | [diff] [blame] | 299 | if (ichar == '\n') { |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 300 | putc('\n'); |
| 301 | break; |
| 302 | } |
| 303 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 304 | switch (ichar) { |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 305 | case CTL_CH('a'): |
| 306 | BEGINNING_OF_LINE(); |
| 307 | break; |
| 308 | case CTL_CH('c'): /* ^C - break */ |
| 309 | *buf = '\0'; /* discard input */ |
| 310 | return -1; |
| 311 | case CTL_CH('f'): |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 312 | if (cls->num < cls->eol_num) { |
| 313 | getcmd_putch(buf[cls->num]); |
| 314 | cls->num++; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 315 | } |
| 316 | break; |
| 317 | case CTL_CH('b'): |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 318 | if (cls->num) { |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 319 | getcmd_putch(CTL_BACKSPACE); |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 320 | cls->num--; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 321 | } |
| 322 | break; |
| 323 | case CTL_CH('d'): |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 324 | if (cls->num < cls->eol_num) { |
| 325 | uint wlen; |
| 326 | |
| 327 | wlen = cls->eol_num - cls->num - 1; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 328 | if (wlen) { |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 329 | memmove(&buf[cls->num], |
| 330 | &buf[cls->num + 1], wlen); |
| 331 | putnstr(buf + cls->num, wlen); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | getcmd_putch(' '); |
| 335 | do { |
| 336 | getcmd_putch(CTL_BACKSPACE); |
| 337 | } while (wlen--); |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 338 | cls->eol_num--; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 339 | } |
| 340 | break; |
| 341 | case CTL_CH('k'): |
| 342 | ERASE_TO_EOL(); |
| 343 | break; |
| 344 | case CTL_CH('e'): |
| 345 | REFRESH_TO_EOL(); |
| 346 | break; |
| 347 | case CTL_CH('o'): |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 348 | cls->insert = !cls->insert; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 349 | break; |
Simon Glass | dcc18ce | 2023-10-01 19:13:09 -0600 | [diff] [blame] | 350 | case CTL_CH('w'): |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 351 | if (cls->num) { |
| 352 | uint base, wlen; |
Simon Glass | dcc18ce | 2023-10-01 19:13:09 -0600 | [diff] [blame] | 353 | |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 354 | for (base = cls->num - 1; |
Simon Glass | dcc18ce | 2023-10-01 19:13:09 -0600 | [diff] [blame] | 355 | base >= 0 && buf[base] == ' ';) |
| 356 | base--; |
| 357 | for (; base > 0 && buf[base - 1] != ' ';) |
| 358 | base--; |
| 359 | |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 360 | /* now delete chars from base to cls->num */ |
| 361 | wlen = cls->num - base; |
| 362 | cls->eol_num -= wlen; |
| 363 | memmove(&buf[base], &buf[cls->num], |
| 364 | cls->eol_num - base + 1); |
| 365 | cls->num = base; |
Simon Glass | dcc18ce | 2023-10-01 19:13:09 -0600 | [diff] [blame] | 366 | getcmd_putchars(wlen, CTL_BACKSPACE); |
| 367 | puts(buf + base); |
| 368 | getcmd_putchars(wlen, ' '); |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 369 | getcmd_putchars(wlen + cls->eol_num - cls->num, |
Simon Glass | dcc18ce | 2023-10-01 19:13:09 -0600 | [diff] [blame] | 370 | CTL_BACKSPACE); |
| 371 | } |
| 372 | break; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 373 | case CTL_CH('x'): |
| 374 | case CTL_CH('u'): |
| 375 | BEGINNING_OF_LINE(); |
| 376 | ERASE_TO_EOL(); |
| 377 | break; |
| 378 | case DEL: |
| 379 | case DEL7: |
| 380 | case 8: |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 381 | if (cls->num) { |
| 382 | uint wlen; |
| 383 | |
| 384 | wlen = cls->eol_num - cls->num; |
| 385 | cls->num--; |
| 386 | memmove(&buf[cls->num], &buf[cls->num + 1], |
| 387 | wlen); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 388 | getcmd_putch(CTL_BACKSPACE); |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 389 | putnstr(buf + cls->num, wlen); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 390 | getcmd_putch(' '); |
| 391 | do { |
| 392 | getcmd_putch(CTL_BACKSPACE); |
| 393 | } while (wlen--); |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 394 | cls->eol_num--; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 395 | } |
| 396 | break; |
| 397 | case CTL_CH('p'): |
| 398 | case CTL_CH('n'): |
| 399 | { |
| 400 | char *hline; |
| 401 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 402 | if (ichar == CTL_CH('p')) |
| 403 | hline = hist_prev(); |
| 404 | else |
| 405 | hline = hist_next(); |
| 406 | |
| 407 | if (!hline) { |
| 408 | getcmd_cbeep(); |
| 409 | continue; |
| 410 | } |
| 411 | |
| 412 | /* nuke the current line */ |
| 413 | /* first, go home */ |
| 414 | BEGINNING_OF_LINE(); |
| 415 | |
| 416 | /* erase to end of line */ |
| 417 | ERASE_TO_EOL(); |
| 418 | |
| 419 | /* copy new line into place and display */ |
| 420 | strcpy(buf, hline); |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 421 | cls->eol_num = strlen(buf); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 422 | REFRESH_TO_EOL(); |
| 423 | continue; |
| 424 | } |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 425 | case '\t': |
| 426 | if (IS_ENABLED(CONFIG_AUTO_COMPLETE)) { |
| 427 | int num2, col; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 428 | |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 429 | /* do not autocomplete when in the middle */ |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 430 | if (cls->num < cls->eol_num) { |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 431 | getcmd_cbeep(); |
| 432 | break; |
| 433 | } |
| 434 | |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 435 | buf[cls->num] = '\0'; |
| 436 | col = strlen(prompt) + cls->eol_num; |
| 437 | num2 = cls->num; |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 438 | if (cmd_auto_complete(prompt, buf, &num2, &col)) { |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 439 | col = num2 - cls->num; |
| 440 | cls->num += col; |
| 441 | cls->eol_num += col; |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 442 | } |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 443 | break; |
| 444 | } |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 445 | fallthrough; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 446 | default: |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 447 | cread_add_char(ichar, cls->insert, &cls->num, |
| 448 | &cls->eol_num, buf, *len); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 449 | break; |
| 450 | } |
| 451 | } |
Simon Glass | be5c2ed | 2023-10-01 19:13:11 -0600 | [diff] [blame^] | 452 | *len = cls->eol_num; |
| 453 | buf[cls->eol_num] = '\0'; /* lose the newline */ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 454 | |
| 455 | if (buf[0] && buf[0] != CREAD_HIST_CHAR) |
| 456 | cread_add_to_hist(buf); |
| 457 | hist_cur = hist_add_idx; |
| 458 | |
| 459 | return 0; |
| 460 | } |
| 461 | |
Simon Glass | 039f8cc | 2023-10-01 19:13:07 -0600 | [diff] [blame] | 462 | #else /* !CONFIG_CMDLINE_EDITING */ |
| 463 | |
| 464 | static inline void hist_init(void) |
| 465 | { |
| 466 | } |
| 467 | |
| 468 | static int cread_line(const char *const prompt, char *buf, unsigned int *len, |
| 469 | int timeout) |
| 470 | { |
| 471 | return 0; |
| 472 | } |
| 473 | |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 474 | #endif /* CONFIG_CMDLINE_EDITING */ |
| 475 | |
| 476 | /****************************************************************************/ |
| 477 | |
Simon Glass | e1bf824 | 2014-04-10 20:01:27 -0600 | [diff] [blame] | 478 | int cli_readline(const char *const prompt) |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 479 | { |
| 480 | /* |
| 481 | * If console_buffer isn't 0-length the user will be prompted to modify |
| 482 | * it instead of entering it from scratch as desired. |
| 483 | */ |
| 484 | console_buffer[0] = '\0'; |
| 485 | |
Simon Glass | e1bf824 | 2014-04-10 20:01:27 -0600 | [diff] [blame] | 486 | return cli_readline_into_buffer(prompt, console_buffer, 0); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 487 | } |
| 488 | |
Simon Glass | 0f97e94 | 2023-10-01 19:13:05 -0600 | [diff] [blame] | 489 | /** |
| 490 | * cread_line_simple() - Simple (small) command-line reader |
| 491 | * |
| 492 | * This supports only basic editing, with no cursor movement |
| 493 | * |
| 494 | * @prompt: Prompt to display |
| 495 | * @p: Text buffer to edit |
| 496 | * Return: length of text buffer, or -1 if input was cannncelled (Ctrl-C) |
| 497 | */ |
| 498 | static int cread_line_simple(const char *const prompt, char *p) |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 499 | { |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 500 | char *p_buf = p; |
Simon Glass | 0f97e94 | 2023-10-01 19:13:05 -0600 | [diff] [blame] | 501 | int n = 0; /* buffer index */ |
| 502 | int plen = 0; /* prompt length */ |
| 503 | int col; /* output column cnt */ |
| 504 | char c; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 505 | |
| 506 | /* print prompt */ |
| 507 | if (prompt) { |
| 508 | plen = strlen(prompt); |
| 509 | puts(prompt); |
| 510 | } |
| 511 | col = plen; |
| 512 | |
| 513 | for (;;) { |
Simon Glass | 0098e17 | 2014-04-10 20:01:30 -0600 | [diff] [blame] | 514 | if (bootretry_tstc_timeout()) |
| 515 | return -2; /* timed out */ |
Stefan Roese | 29caf93 | 2022-09-02 14:10:46 +0200 | [diff] [blame] | 516 | schedule(); /* Trigger watchdog, if needed */ |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 517 | |
Heinrich Schuchardt | c670aee | 2020-10-07 18:11:48 +0200 | [diff] [blame] | 518 | c = getchar(); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 519 | |
| 520 | /* |
| 521 | * Special character handling |
| 522 | */ |
| 523 | switch (c) { |
| 524 | case '\r': /* Enter */ |
| 525 | case '\n': |
| 526 | *p = '\0'; |
| 527 | puts("\r\n"); |
| 528 | return p - p_buf; |
| 529 | |
| 530 | case '\0': /* nul */ |
| 531 | continue; |
| 532 | |
| 533 | case 0x03: /* ^C - break */ |
| 534 | p_buf[0] = '\0'; /* discard input */ |
| 535 | return -1; |
| 536 | |
| 537 | case 0x15: /* ^U - erase line */ |
| 538 | while (col > plen) { |
| 539 | puts(erase_seq); |
| 540 | --col; |
| 541 | } |
| 542 | p = p_buf; |
| 543 | n = 0; |
| 544 | continue; |
| 545 | |
| 546 | case 0x17: /* ^W - erase word */ |
| 547 | p = delete_char(p_buf, p, &col, &n, plen); |
| 548 | while ((n > 0) && (*p != ' ')) |
| 549 | p = delete_char(p_buf, p, &col, &n, plen); |
| 550 | continue; |
| 551 | |
| 552 | case 0x08: /* ^H - backspace */ |
| 553 | case 0x7F: /* DEL - backspace */ |
| 554 | p = delete_char(p_buf, p, &col, &n, plen); |
| 555 | continue; |
| 556 | |
| 557 | default: |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 558 | /* Must be a normal character then */ |
| 559 | if (n >= CONFIG_SYS_CBSIZE - 2) { /* Buffer full */ |
| 560 | putc('\a'); |
| 561 | break; |
| 562 | } |
| 563 | if (c == '\t') { /* expand TABs */ |
| 564 | if (IS_ENABLED(CONFIG_AUTO_COMPLETE)) { |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 565 | /* |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 566 | * if auto-completion triggered just |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 567 | * continue |
| 568 | */ |
| 569 | *p = '\0'; |
| 570 | if (cmd_auto_complete(prompt, |
| 571 | console_buffer, |
| 572 | &n, &col)) { |
| 573 | p = p_buf + n; /* reset */ |
| 574 | continue; |
| 575 | } |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 576 | } |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 577 | puts(tab_seq + (col & 07)); |
| 578 | col += 8 - (col & 07); |
| 579 | } else { |
| 580 | char __maybe_unused buf[2]; |
| 581 | |
| 582 | /* |
| 583 | * Echo input using puts() to force an LCD |
| 584 | * flush if we are using an LCD |
| 585 | */ |
| 586 | ++col; |
| 587 | buf[0] = c; |
| 588 | buf[1] = '\0'; |
| 589 | puts(buf); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 590 | } |
Simon Glass | 6321391 | 2023-10-01 19:13:08 -0600 | [diff] [blame] | 591 | *p++ = c; |
| 592 | ++n; |
| 593 | break; |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 594 | } |
| 595 | } |
Simon Glass | 0f97e94 | 2023-10-01 19:13:05 -0600 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | int cli_readline_into_buffer(const char *const prompt, char *buffer, |
| 599 | int timeout) |
| 600 | { |
| 601 | char *p = buffer; |
Simon Glass | 039f8cc | 2023-10-01 19:13:07 -0600 | [diff] [blame] | 602 | uint len = CONFIG_SYS_CBSIZE; |
Simon Glass | 0f97e94 | 2023-10-01 19:13:05 -0600 | [diff] [blame] | 603 | int rc; |
| 604 | static int initted; |
| 605 | |
| 606 | /* |
| 607 | * History uses a global array which is not |
| 608 | * writable until after relocation to RAM. |
| 609 | * Revert to non-history version if still |
| 610 | * running from flash. |
| 611 | */ |
Simon Glass | 039f8cc | 2023-10-01 19:13:07 -0600 | [diff] [blame] | 612 | if (IS_ENABLED(CONFIG_CMDLINE_EDITING) && (gd->flags & GD_FLG_RELOC)) { |
Simon Glass | 0f97e94 | 2023-10-01 19:13:05 -0600 | [diff] [blame] | 613 | if (!initted) { |
| 614 | hist_init(); |
| 615 | initted = 1; |
| 616 | } |
| 617 | |
| 618 | if (prompt) |
| 619 | puts(prompt); |
| 620 | |
| 621 | rc = cread_line(prompt, p, &len, timeout); |
| 622 | return rc < 0 ? rc : len; |
| 623 | |
| 624 | } else { |
Simon Glass | 0f97e94 | 2023-10-01 19:13:05 -0600 | [diff] [blame] | 625 | return cread_line_simple(prompt, p); |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 626 | } |
Simon Glass | 6493ccc | 2014-04-10 20:01:26 -0600 | [diff] [blame] | 627 | } |