2 * (C) Copyright 2000-2009
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * Command Processor Table
32 * Use puts() instead of printf() to avoid printf buffer overflow
33 * for long help messages
36 int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
37 flag, int argc, char *argv[])
42 if (argc == 1) { /*show list of commands */
43 cmd_tbl_t *cmd_array[cmd_items];
46 /* Make array of commands from .uboot_cmd section */
48 for (i = 0; i < cmd_items; i++) {
49 cmd_array[i] = cmdtp++;
52 /* Sort command list (trivial bubble sort) */
53 for (i = cmd_items - 1; i > 0; --i) {
55 for (j = 0; j < i; ++j) {
56 if (strcmp (cmd_array[j]->name,
57 cmd_array[j + 1]->name) > 0) {
60 cmd_array[j] = cmd_array[j + 1];
61 cmd_array[j + 1] = tmp;
69 /* print short help (usage) */
70 for (i = 0; i < cmd_items; i++) {
71 const char *usage = cmd_array[i]->usage;
73 /* allow user abort */
78 printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH,
79 cmd_array[i]->name, usage);
84 * command help (long version)
86 for (i = 1; i < argc; ++i) {
87 if ((cmdtp = find_cmd_tbl (argv[i], cmd_start, cmd_items )) != NULL) {
88 rcode |= cmd_usage(cmdtp);
90 printf ("Unknown command '%s' - try 'help'"
91 " without arguments for list of all"
92 " known commands\n\n", argv[i]
100 /***************************************************************************
101 * find command table entry for a command
103 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len)
106 cmd_tbl_t *cmdtp_temp = table; /*Init value */
112 * Some commands allow length modifiers (like "cp.b");
113 * compare command name only until first dot.
115 len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd);
118 cmdtp != table + table_len;
120 if (strncmp (cmd, cmdtp->name, len) == 0) {
121 if (len == strlen (cmdtp->name))
122 return cmdtp; /* full match */
124 cmdtp_temp = cmdtp; /* abbreviated command ? */
128 if (n_found == 1) { /* exactly one match */
132 return NULL; /* not found or ambiguous command */
135 cmd_tbl_t *find_cmd (const char *cmd)
137 int len = &__u_boot_cmd_end - &__u_boot_cmd_start;
138 return find_cmd_tbl(cmd, &__u_boot_cmd_start, len);
141 int cmd_usage(cmd_tbl_t *cmdtp)
143 printf("%s - %s\n\n", cmdtp->name, cmdtp->usage);
145 #ifdef CONFIG_SYS_LONGHELP
146 printf("Usage:\n%s ", cmdtp->name);
149 puts ("- No additional help available.\n");
155 #endif /* CONFIG_SYS_LONGHELP */
159 #ifdef CONFIG_AUTO_COMPLETE
161 int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[])
163 static char tmp_buf[512];
166 space = last_char == '\0' || last_char == ' ' || last_char == '\t';
168 if (space && argc == 1)
169 return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf);
171 if (!space && argc == 2)
172 return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf);
177 static void install_auto_complete_handler(const char *cmd,
178 int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[]))
182 cmdtp = find_cmd(cmd);
186 cmdtp->complete = complete;
189 void install_auto_complete(void)
191 #if defined(CONFIG_CMD_EDITENV)
192 install_auto_complete_handler("editenv", var_complete);
194 install_auto_complete_handler("printenv", var_complete);
195 install_auto_complete_handler("setenv", var_complete);
196 #if defined(CONFIG_CMD_RUN)
197 install_auto_complete_handler("run", var_complete);
201 /*************************************************************************************/
203 static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[])
218 /* output full list of commands */
219 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
220 if (n_found >= maxv - 2) {
221 cmdv[n_found++] = "...";
224 cmdv[n_found++] = cmdtp->name;
226 cmdv[n_found] = NULL;
230 /* more than one arg or one but the start of the next */
231 if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) {
232 cmdtp = find_cmd(argv[0]);
233 if (cmdtp == NULL || cmdtp->complete == NULL) {
237 return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv);
242 * Some commands allow length modifiers (like "cp.b");
243 * compare command name only until first dot.
245 p = strchr(cmd, '.');
251 /* return the partial matches */
252 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
254 clen = strlen(cmdtp->name);
258 if (memcmp(cmd, cmdtp->name, len) != 0)
262 if (n_found >= maxv - 2) {
263 cmdv[n_found++] = "...";
267 cmdv[n_found++] = cmdtp->name;
270 cmdv[n_found] = NULL;
274 static int make_argv(char *s, int argvsz, char *argv[])
278 /* split into argv */
279 while (argc < argvsz - 1) {
281 /* skip any white space */
282 while ((*s == ' ') || (*s == '\t'))
285 if (*s == '\0') /* end of s, no more args */
288 argv[argc++] = s; /* begin of argument string */
290 /* find end of string */
291 while (*s && (*s != ' ') && (*s != '\t'))
294 if (*s == '\0') /* end of s, no more args */
297 *s++ = '\0'; /* terminate current arg */
304 static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[])
306 int ll = leader != NULL ? strlen(leader) : 0;
307 int sl = sep != NULL ? strlen(sep) : 0;
315 i = linemax; /* force leader and newline */
316 while (*argv != NULL) {
317 len = strlen(*argv) + sl;
318 if (i + len >= linemax) {
331 static int find_common_prefix(char *argv[])
334 char *anchor, *s, *t;
341 len = strlen(anchor);
342 while ((t = *argv++) != NULL) {
344 for (i = 0; i < len; i++, t++, s++) {
353 static char tmp_buf[CONFIG_SYS_CBSIZE]; /* copy of console I/O buffer */
355 int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp)
357 int n = *np, col = *colp;
358 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
362 int i, j, k, len, seplen, argc;
366 if (strcmp(prompt, CONFIG_SYS_PROMPT) != 0)
367 return 0; /* not in normal console */
371 last_char = buf[cnt - 1];
375 /* copy to secondary buffer which will be affected */
376 strcpy(tmp_buf, buf);
378 /* separate into argv */
379 argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv);
381 /* do the completion and return the possible completions */
382 i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv);
384 /* no match; bell and out */
386 if (argc > 1) /* allow tab for non command */
396 if (i == 1) { /* one match; perfect */
397 k = strlen(argv[argc - 1]);
402 } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */
403 k = strlen(argv[argc - 1]);
413 /* make sure it fits */
414 if (n + k >= CONFIG_SYS_CBSIZE - 2) {
420 for (i = 0; i < len; i++)
423 for (i = 0; i < seplen; i++)
434 print_argv(NULL, " ", " ", 78, cmdv);
445 int cmd_get_data_size(char* arg, int default_size)
447 /* Check for a size specification .b, .w or .l.
449 int len = strlen(arg);
450 if (len > 2 && arg[len-2] == '.') {