3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Add to readline cmdline-editing by
7 * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 #ifdef CONFIG_MODEM_SUPPORT
34 #include <malloc.h> /* for free() prototype */
37 #ifdef CFG_HUSH_PARSER
43 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST)
44 DECLARE_GLOBAL_DATA_PTR
;
48 * Board-specific Platform code can reimplement show_boot_progress () if needed
50 void inline __show_boot_progress (int val
) {}
51 void inline show_boot_progress (int val
) __attribute__((weak
, alias("__show_boot_progress")));
53 #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
54 extern int do_reset (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]); /* for do_reset() prototype */
57 extern int do_bootd (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]);
60 #define MAX_DELAY_STOP_STR 32
62 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
63 static int abortboot(int);
68 char console_buffer
[CFG_CBSIZE
]; /* console I/O buffer */
70 #ifndef CONFIG_CMDLINE_EDITING
71 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
);
72 static char erase_seq
[] = "\b \b"; /* erase sequence */
73 static char tab_seq
[] = " "; /* used to expand TABs */
74 #endif /* CONFIG_CMDLINE_EDITING */
76 #ifdef CONFIG_BOOT_RETRY_TIME
77 static uint64_t endtime
= 0; /* must be set, default is instant timeout */
78 static int retry_time
= -1; /* -1 so can call readline before main_loop */
81 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
83 #ifndef CONFIG_BOOT_RETRY_MIN
84 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
87 #ifdef CONFIG_MODEM_SUPPORT
89 extern void mdm_init(void); /* defined in board.c */
92 /***************************************************************************
93 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
94 * returns: 0 - no key string, allow autoboot
95 * 1 - got key string, abort
97 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
98 # if defined(CONFIG_AUTOBOOT_KEYED)
99 static __inline__
int abortboot(int bootdelay
)
102 uint64_t etime
= endtick(bootdelay
);
109 { str
: getenv ("bootdelaykey"), retry
: 1 },
110 { str
: getenv ("bootdelaykey2"), retry
: 1 },
111 { str
: getenv ("bootstopkey"), retry
: 0 },
112 { str
: getenv ("bootstopkey2"), retry
: 0 },
115 char presskey
[MAX_DELAY_STOP_STR
];
116 u_int presskey_len
= 0;
117 u_int presskey_max
= 0;
120 # ifdef CONFIG_AUTOBOOT_PROMPT
121 printf(CONFIG_AUTOBOOT_PROMPT
, bootdelay
);
124 # ifdef CONFIG_AUTOBOOT_DELAY_STR
125 if (delaykey
[0].str
== NULL
)
126 delaykey
[0].str
= CONFIG_AUTOBOOT_DELAY_STR
;
128 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
129 if (delaykey
[1].str
== NULL
)
130 delaykey
[1].str
= CONFIG_AUTOBOOT_DELAY_STR2
;
132 # ifdef CONFIG_AUTOBOOT_STOP_STR
133 if (delaykey
[2].str
== NULL
)
134 delaykey
[2].str
= CONFIG_AUTOBOOT_STOP_STR
;
136 # ifdef CONFIG_AUTOBOOT_STOP_STR2
137 if (delaykey
[3].str
== NULL
)
138 delaykey
[3].str
= CONFIG_AUTOBOOT_STOP_STR2
;
141 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
142 delaykey
[i
].len
= delaykey
[i
].str
== NULL
?
143 0 : strlen (delaykey
[i
].str
);
144 delaykey
[i
].len
= delaykey
[i
].len
> MAX_DELAY_STOP_STR
?
145 MAX_DELAY_STOP_STR
: delaykey
[i
].len
;
147 presskey_max
= presskey_max
> delaykey
[i
].len
?
148 presskey_max
: delaykey
[i
].len
;
151 printf("%s key:<%s>\n",
152 delaykey
[i
].retry
? "delay" : "stop",
153 delaykey
[i
].str
? delaykey
[i
].str
: "NULL");
157 /* In order to keep up with incoming data, check timeout only
160 while (!abort
&& get_ticks() <= etime
) {
161 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
162 if (delaykey
[i
].len
> 0 &&
163 presskey_len
>= delaykey
[i
].len
&&
164 memcmp (presskey
+ presskey_len
- delaykey
[i
].len
,
166 delaykey
[i
].len
) == 0) {
168 printf("got %skey\n",
169 delaykey
[i
].retry
? "delay" : "stop");
172 # ifdef CONFIG_BOOT_RETRY_TIME
173 /* don't retry auto boot */
174 if (! delaykey
[i
].retry
)
182 if (presskey_len
< presskey_max
) {
183 presskey
[presskey_len
++] = getc();
186 for (i
= 0; i
< presskey_max
- 1; i
++)
187 presskey
[i
] = presskey
[i
+ 1];
189 presskey
[i
] = getc();
195 puts("key timeout\n");
198 #ifdef CONFIG_SILENT_CONSOLE
200 gd
->flags
&= ~GD_FLG_SILENT
;
206 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
208 #ifdef CONFIG_MENUKEY
209 static int menukey
= 0;
212 static __inline__
int abortboot(int bootdelay
)
216 #ifdef CONFIG_MENUPROMPT
217 printf(CONFIG_MENUPROMPT
, bootdelay
);
219 printf("Hit any key to stop autoboot: %2d ", bootdelay
);
222 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
224 * Check if key already pressed
225 * Don't check if bootdelay < 0
227 if (bootdelay
>= 0) {
228 if (tstc()) { /* we got a key press */
229 (void) getc(); /* consume input */
231 abort
= 1; /* don't auto boot */
236 while ((bootdelay
> 0) && (!abort
)) {
240 /* delay 100 * 10ms */
241 for (i
=0; !abort
&& i
<100; ++i
) {
242 if (tstc()) { /* we got a key press */
243 abort
= 1; /* don't auto boot */
244 bootdelay
= 0; /* no more delay */
245 # ifdef CONFIG_MENUKEY
248 (void) getc(); /* consume input */
255 printf("\b\b\b%2d ", bootdelay
);
260 #ifdef CONFIG_SILENT_CONSOLE
262 gd
->flags
&= ~GD_FLG_SILENT
;
267 # endif /* CONFIG_AUTOBOOT_KEYED */
268 #endif /* CONFIG_BOOTDELAY >= 0 */
270 /****************************************************************************/
272 void main_loop (void)
274 #ifndef CFG_HUSH_PARSER
275 static char lastcommand
[CFG_CBSIZE
] = { 0, };
281 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
285 #ifdef CONFIG_PREBOOT
288 #ifdef CONFIG_BOOTCOUNT_LIMIT
289 unsigned long bootcount
= 0;
290 unsigned long bootlimit
= 0;
293 #endif /* CONFIG_BOOTCOUNT_LIMIT */
295 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
296 ulong bmp
= 0; /* default bitmap */
297 extern int trab_vfd (ulong bitmap
);
299 #ifdef CONFIG_MODEM_SUPPORT
301 bmp
= 1; /* alternate bitmap */
304 #endif /* CONFIG_VFD && VFD_TEST_LOGO */
306 #ifdef CONFIG_BOOTCOUNT_LIMIT
307 bootcount
= bootcount_load();
309 bootcount_store (bootcount
);
310 sprintf (bcs_set
, "%lu", bootcount
);
311 setenv ("bootcount", bcs_set
);
312 bcs
= getenv ("bootlimit");
313 bootlimit
= bcs
? simple_strtoul (bcs
, NULL
, 10) : 0;
314 #endif /* CONFIG_BOOTCOUNT_LIMIT */
316 #ifdef CONFIG_MODEM_SUPPORT
317 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init
);
319 char *str
= strdup(getenv("mdm_cmd"));
320 setenv ("preboot", str
); /* set or delete definition */
323 mdm_init(); /* wait for modem connection */
325 #endif /* CONFIG_MODEM_SUPPORT */
327 #ifdef CONFIG_VERSION_VARIABLE
329 extern char version_string
[];
331 setenv ("ver", version_string
); /* set version variable */
333 #endif /* CONFIG_VERSION_VARIABLE */
335 #ifdef CFG_HUSH_PARSER
336 u_boot_hush_start ();
339 #ifdef CONFIG_AUTO_COMPLETE
340 install_auto_complete();
343 #ifdef CONFIG_PREBOOT
344 if ((p
= getenv ("preboot")) != NULL
) {
345 # ifdef CONFIG_AUTOBOOT_KEYED
346 int prev
= disable_ctrlc(1); /* disable Control C checking */
349 # ifndef CFG_HUSH_PARSER
352 parse_string_outer(p
, FLAG_PARSE_SEMICOLON
|
353 FLAG_EXIT_FROM_LOOP
);
356 # ifdef CONFIG_AUTOBOOT_KEYED
357 disable_ctrlc(prev
); /* restore Control C checking */
360 #endif /* CONFIG_PREBOOT */
362 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
363 s
= getenv ("bootdelay");
364 bootdelay
= s
? (int)simple_strtol(s
, NULL
, 10) : CONFIG_BOOTDELAY
;
366 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay
);
368 # ifdef CONFIG_BOOT_RETRY_TIME
370 # endif /* CONFIG_BOOT_RETRY_TIME */
373 if (gd
->flags
& GD_FLG_POSTFAIL
) {
374 s
= getenv("failbootcmd");
377 #endif /* CONFIG_POST */
378 #ifdef CONFIG_BOOTCOUNT_LIMIT
379 if (bootlimit
&& (bootcount
> bootlimit
)) {
380 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
381 (unsigned)bootlimit
);
382 s
= getenv ("altbootcmd");
385 #endif /* CONFIG_BOOTCOUNT_LIMIT */
386 s
= getenv ("bootcmd");
388 debug ("### main_loop: bootcmd=\"%s\"\n", s
? s
: "<UNDEFINED>");
390 if (bootdelay
>= 0 && s
&& !abortboot (bootdelay
)) {
391 # ifdef CONFIG_AUTOBOOT_KEYED
392 int prev
= disable_ctrlc(1); /* disable Control C checking */
395 # ifndef CFG_HUSH_PARSER
398 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
399 FLAG_EXIT_FROM_LOOP
);
402 # ifdef CONFIG_AUTOBOOT_KEYED
403 disable_ctrlc(prev
); /* restore Control C checking */
407 # ifdef CONFIG_MENUKEY
408 if (menukey
== CONFIG_MENUKEY
) {
409 s
= getenv("menucmd");
411 # ifndef CFG_HUSH_PARSER
414 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
415 FLAG_EXIT_FROM_LOOP
);
419 #endif /* CONFIG_MENUKEY */
420 #endif /* CONFIG_BOOTDELAY */
422 #ifdef CONFIG_AMIGAONEG3SE
424 extern void video_banner(void);
430 * Main Loop for Monitor Command Processing
432 #ifdef CFG_HUSH_PARSER
434 /* This point is never reached */
438 #ifdef CONFIG_BOOT_RETRY_TIME
440 /* Saw enough of a valid command to
441 * restart the timeout.
446 len
= readline (CFG_PROMPT
);
448 flag
= 0; /* assume no special flags for now */
450 strcpy (lastcommand
, console_buffer
);
452 flag
|= CMD_FLAG_REPEAT
;
453 #ifdef CONFIG_BOOT_RETRY_TIME
454 else if (len
== -2) {
455 /* -2 means timed out, retry autoboot
457 puts ("\nTimed out waiting for command\n");
458 # ifdef CONFIG_RESET_TO_RETRY
459 /* Reinit board to run initialization code again */
460 do_reset (NULL
, 0, 0, NULL
);
462 return; /* retry autoboot */
468 puts ("<INTERRUPT>\n");
470 rc
= run_command (lastcommand
, flag
);
473 /* invalid command or not repeatable, forget it */
477 #endif /*CFG_HUSH_PARSER*/
480 #ifdef CONFIG_BOOT_RETRY_TIME
481 /***************************************************************************
482 * initialize command line timeout
484 void init_cmd_timeout(void)
486 char *s
= getenv ("bootretry");
489 retry_time
= (int)simple_strtol(s
, NULL
, 10);
491 retry_time
= CONFIG_BOOT_RETRY_TIME
;
493 if (retry_time
>= 0 && retry_time
< CONFIG_BOOT_RETRY_MIN
)
494 retry_time
= CONFIG_BOOT_RETRY_MIN
;
497 /***************************************************************************
498 * reset command line timeout to retry_time seconds
500 void reset_cmd_timeout(void)
502 endtime
= endtick(retry_time
);
506 #ifdef CONFIG_CMDLINE_EDITING
509 * cmdline-editing related codes from vivi.
510 * Author: Janghoon Lyu <nandy@mizi.com>
513 #define putnstr(str,n) do { \
514 printf ("%.*s", n, str); \
517 #define CTL_CH(c) ((c) - 'a' + 1)
519 #define MAX_CMDBUF_SIZE 256
521 #define CTL_BACKSPACE ('\b')
522 #define DEL ((char)255)
523 #define DEL7 ((char)127)
524 #define CREAD_HIST_CHAR ('!')
526 #define getcmd_putch(ch) putc(ch)
527 #define getcmd_getch() getc()
528 #define getcmd_cbeep() getcmd_putch('\a')
531 #define HIST_SIZE MAX_CMDBUF_SIZE
533 static int hist_max
= 0;
534 static int hist_add_idx
= 0;
535 static int hist_cur
= -1;
536 unsigned hist_num
= 0;
538 char* hist_list
[HIST_MAX
];
539 char hist_lines
[HIST_MAX
][HIST_SIZE
];
541 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
543 static void hist_init(void)
552 for (i
= 0; i
< HIST_MAX
; i
++) {
553 hist_list
[i
] = hist_lines
[i
];
554 hist_list
[i
][0] = '\0';
558 static void cread_add_to_hist(char *line
)
560 strcpy(hist_list
[hist_add_idx
], line
);
562 if (++hist_add_idx
>= HIST_MAX
)
565 if (hist_add_idx
> hist_max
)
566 hist_max
= hist_add_idx
;
571 static char* hist_prev(void)
583 if (hist_cur
== hist_add_idx
) {
587 ret
= hist_list
[hist_cur
];
592 static char* hist_next(void)
599 if (hist_cur
== hist_add_idx
)
602 if (++hist_cur
> hist_max
)
605 if (hist_cur
== hist_add_idx
) {
608 ret
= hist_list
[hist_cur
];
613 #ifndef CONFIG_CMDLINE_EDITING
614 static void cread_print_hist_list(void)
619 n
= hist_num
- hist_max
;
621 i
= hist_add_idx
+ 1;
625 if (i
== hist_add_idx
)
627 printf("%s\n", hist_list
[i
]);
632 #endif /* CONFIG_CMDLINE_EDITING */
634 #define BEGINNING_OF_LINE() { \
636 getcmd_putch(CTL_BACKSPACE); \
641 #define ERASE_TO_EOL() { \
642 if (num < eol_num) { \
644 for (tmp = num; tmp < eol_num; tmp++) \
646 while (tmp-- > num) \
647 getcmd_putch(CTL_BACKSPACE); \
652 #define REFRESH_TO_EOL() { \
653 if (num < eol_num) { \
654 wlen = eol_num - num; \
655 putnstr(buf + num, wlen); \
660 static void cread_add_char(char ichar
, int insert
, unsigned long *num
,
661 unsigned long *eol_num
, char *buf
, unsigned long len
)
666 if (insert
|| *num
== *eol_num
) {
667 if (*eol_num
> len
- 1) {
675 wlen
= *eol_num
- *num
;
677 memmove(&buf
[*num
+1], &buf
[*num
], wlen
-1);
681 putnstr(buf
+ *num
, wlen
);
684 getcmd_putch(CTL_BACKSPACE
);
687 /* echo the character */
690 putnstr(buf
+ *num
, wlen
);
695 static void cread_add_str(char *str
, int strsize
, int insert
, unsigned long *num
,
696 unsigned long *eol_num
, char *buf
, unsigned long len
)
699 cread_add_char(*str
, insert
, num
, eol_num
, buf
, len
);
704 static int cread_line(const char *const prompt
, char *buf
, unsigned int *len
)
706 unsigned long num
= 0;
707 unsigned long eol_num
= 0;
718 #ifdef CONFIG_BOOT_RETRY_TIME
719 while (!tstc()) { /* while no incoming data */
720 if (retry_time
>= 0 && get_ticks() > endtime
)
721 return (-2); /* timed out */
725 ichar
= getcmd_getch();
727 if ((ichar
== '\n') || (ichar
== '\r')) {
733 * handle standard linux xterm esc sequences for arrow key, etc.
738 esc_save
[esc_len
] = ichar
;
741 cread_add_str(esc_save
, esc_len
, insert
,
742 &num
, &eol_num
, buf
, *len
);
750 case 'D': /* <- key */
754 case 'C': /* -> key */
757 break; /* pass off to ^F handler */
758 case 'H': /* Home key */
761 break; /* pass off to ^A handler */
762 case 'A': /* up arrow */
765 break; /* pass off to ^P handler */
766 case 'B': /* down arrow */
769 break; /* pass off to ^N handler */
771 esc_save
[esc_len
++] = ichar
;
772 cread_add_str(esc_save
, esc_len
, insert
,
773 &num
, &eol_num
, buf
, *len
);
782 esc_save
[esc_len
] = ichar
;
785 puts("impossible condition #876\n");
793 case CTL_CH('c'): /* ^C - break */
794 *buf
= '\0'; /* discard input */
798 getcmd_putch(buf
[num
]);
804 getcmd_putch(CTL_BACKSPACE
);
810 wlen
= eol_num
- num
- 1;
812 memmove(&buf
[num
], &buf
[num
+1], wlen
);
813 putnstr(buf
+ num
, wlen
);
818 getcmd_putch(CTL_BACKSPACE
);
841 wlen
= eol_num
- num
;
843 memmove(&buf
[num
], &buf
[num
+1], wlen
);
844 getcmd_putch(CTL_BACKSPACE
);
845 putnstr(buf
+ num
, wlen
);
848 getcmd_putch(CTL_BACKSPACE
);
860 if (ichar
== CTL_CH('p'))
870 /* nuke the current line */
874 /* erase to end of line */
877 /* copy new line into place and display */
879 eol_num
= strlen(buf
);
883 #ifdef CONFIG_AUTO_COMPLETE
887 /* do not autocomplete when in the middle */
894 col
= strlen(prompt
) + eol_num
;
896 if (cmd_auto_complete(prompt
, buf
, &num2
, &col
)) {
905 cread_add_char(ichar
, insert
, &num
, &eol_num
, buf
, *len
);
910 buf
[eol_num
] = '\0'; /* lose the newline */
912 if (buf
[0] && buf
[0] != CREAD_HIST_CHAR
)
913 cread_add_to_hist(buf
);
914 hist_cur
= hist_add_idx
;
919 #endif /* CONFIG_CMDLINE_EDITING */
921 /****************************************************************************/
924 * Prompt for input and read a line.
925 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
926 * time out when time goes past endtime (timebase time in ticks).
927 * Return: number of read characters
931 int readline (const char *const prompt
)
933 return readline_into_buffer(prompt
, console_buffer
);
937 int readline_into_buffer (const char *const prompt
, char * buffer
)
940 #ifdef CONFIG_CMDLINE_EDITING
941 unsigned int len
=MAX_CMDBUF_SIZE
;
943 static int initted
= 0;
952 rc
= cread_line(prompt
, p
, &len
);
953 return rc
< 0 ? rc
: len
;
956 int n
= 0; /* buffer index */
957 int plen
= 0; /* prompt length */
958 int col
; /* output column cnt */
963 plen
= strlen (prompt
);
969 #ifdef CONFIG_BOOT_RETRY_TIME
970 while (!tstc()) { /* while no incoming data */
971 if (retry_time
>= 0 && get_ticks() > endtime
)
972 return (-2); /* timed out */
975 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
977 #ifdef CONFIG_SHOW_ACTIVITY
979 extern void show_activity(int arg
);
986 * Special character handling
989 case '\r': /* Enter */
998 case 0x03: /* ^C - break */
999 p_buf
[0] = '\0'; /* discard input */
1002 case 0x15: /* ^U - erase line */
1003 while (col
> plen
) {
1011 case 0x17: /* ^W - erase word */
1012 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1013 while ((n
> 0) && (*p
!= ' ')) {
1014 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1018 case 0x08: /* ^H - backspace */
1019 case 0x7F: /* DEL - backspace */
1020 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1025 * Must be a normal character then
1027 if (n
< CFG_CBSIZE
-2) {
1028 if (c
== '\t') { /* expand TABs */
1029 #ifdef CONFIG_AUTO_COMPLETE
1030 /* if auto completion triggered just continue */
1032 if (cmd_auto_complete(prompt
, console_buffer
, &n
, &col
)) {
1033 p
= p_buf
+ n
; /* reset */
1037 puts (tab_seq
+(col
&07));
1038 col
+= 8 - (col
&07);
1040 ++col
; /* echo input */
1045 } else { /* Buffer full */
1050 #endif /* CONFIG_CMDLINE_EDITING */
1053 /****************************************************************************/
1055 #ifndef CONFIG_CMDLINE_EDITING
1056 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
)
1064 if (*(--p
) == '\t') { /* will retype the whole line */
1065 while (*colp
> plen
) {
1069 for (s
=buffer
; s
<p
; ++s
) {
1071 puts (tab_seq
+((*colp
) & 07));
1072 *colp
+= 8 - ((*colp
) & 07);
1085 #endif /* CONFIG_CMDLINE_EDITING */
1087 /****************************************************************************/
1089 int parse_line (char *line
, char *argv
[])
1094 printf ("parse_line: \"%s\"\n", line
);
1096 while (nargs
< CFG_MAXARGS
) {
1098 /* skip any white space */
1099 while ((*line
== ' ') || (*line
== '\t')) {
1103 if (*line
== '\0') { /* end of line, no more args */
1106 printf ("parse_line: nargs=%d\n", nargs
);
1111 argv
[nargs
++] = line
; /* begin of argument string */
1113 /* find end of string */
1114 while (*line
&& (*line
!= ' ') && (*line
!= '\t')) {
1118 if (*line
== '\0') { /* end of line, no more args */
1121 printf ("parse_line: nargs=%d\n", nargs
);
1126 *line
++ = '\0'; /* terminate current arg */
1129 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS
);
1132 printf ("parse_line: nargs=%d\n", nargs
);
1137 /****************************************************************************/
1139 static void process_macros (const char *input
, char *output
)
1142 const char *varname_start
= NULL
;
1143 int inputcnt
= strlen (input
);
1144 int outputcnt
= CFG_CBSIZE
;
1145 int state
= 0; /* 0 = waiting for '$' */
1147 /* 1 = waiting for '(' or '{' */
1148 /* 2 = waiting for ')' or '}' */
1149 /* 3 = waiting for ''' */
1151 char *output_start
= output
;
1153 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input
),
1157 prev
= '\0'; /* previous character */
1159 while (inputcnt
&& outputcnt
) {
1164 /* remove one level of escape characters */
1165 if ((c
== '\\') && (prev
!= '\\')) {
1166 if (inputcnt
-- == 0)
1174 case 0: /* Waiting for (unescaped) $ */
1175 if ((c
== '\'') && (prev
!= '\\')) {
1179 if ((c
== '$') && (prev
!= '\\')) {
1186 case 1: /* Waiting for ( */
1187 if (c
== '(' || c
== '{') {
1189 varname_start
= input
;
1201 case 2: /* Waiting for ) */
1202 if (c
== ')' || c
== '}') {
1204 char envname
[CFG_CBSIZE
], *envval
;
1205 int envcnt
= input
- varname_start
- 1; /* Varname # of chars */
1207 /* Get the varname */
1208 for (i
= 0; i
< envcnt
; i
++) {
1209 envname
[i
] = varname_start
[i
];
1214 envval
= getenv (envname
);
1216 /* Copy into the line if it exists */
1218 while ((*envval
) && outputcnt
) {
1219 *(output
++) = *(envval
++);
1222 /* Look for another '$' */
1226 case 3: /* Waiting for ' */
1227 if ((c
== '\'') && (prev
!= '\\')) {
1244 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1245 strlen (output_start
), output_start
);
1249 /****************************************************************************
1251 * 1 - command executed, repeatable
1252 * 0 - command executed but not repeatable, interrupted commands are
1253 * always considered not repeatable
1254 * -1 - not executed (unrecognized, bootd recursion or too many args)
1255 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is
1256 * considered unrecognized)
1260 * We must create a temporary copy of the command since the command we get
1261 * may be the result from getenv(), which returns a pointer directly to
1262 * the environment data, which may change magicly when the command we run
1263 * creates or modifies environment variables (like "bootp" does).
1266 int run_command (const char *cmd
, int flag
)
1269 char cmdbuf
[CFG_CBSIZE
]; /* working copy of cmd */
1270 char *token
; /* start of token in cmdbuf */
1271 char *sep
; /* end of token (separator) in cmdbuf */
1272 char finaltoken
[CFG_CBSIZE
];
1274 char *argv
[CFG_MAXARGS
+ 1]; /* NULL terminated */
1280 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd
);
1281 puts (cmd
? cmd
: "NULL"); /* use puts - string may be loooong */
1285 clear_ctrlc(); /* forget any previous Control C */
1287 if (!cmd
|| !*cmd
) {
1288 return -1; /* empty command */
1291 if (strlen(cmd
) >= CFG_CBSIZE
) {
1292 puts ("## Command too long!\n");
1296 strcpy (cmdbuf
, cmd
);
1298 /* Process separators and check for invalid
1299 * repeatable commands
1303 printf ("[PROCESS_SEPARATORS] %s\n", cmd
);
1308 * Find separator, or string end
1309 * Allow simple escape of ';' by writing "\;"
1311 for (inquotes
= 0, sep
= str
; *sep
; sep
++) {
1317 (*sep
== ';') && /* separator */
1318 ( sep
!= str
) && /* past string start */
1319 (*(sep
-1) != '\\')) /* and NOT escaped */
1324 * Limit the token to data between separators
1328 str
= sep
+ 1; /* start of command for next pass */
1332 str
= sep
; /* no more commands for next pass */
1334 printf ("token: \"%s\"\n", token
);
1337 /* find macros in this token and replace them */
1338 process_macros (token
, finaltoken
);
1340 /* Extract arguments */
1341 if ((argc
= parse_line (finaltoken
, argv
)) == 0) {
1342 rc
= -1; /* no command at all */
1346 /* Look up command in command table */
1347 if ((cmdtp
= find_cmd(argv
[0])) == NULL
) {
1348 printf ("Unknown command '%s' - try 'help'\n", argv
[0]);
1349 rc
= -1; /* give up after bad command */
1353 /* found - check max args */
1354 if (argc
> cmdtp
->maxargs
) {
1355 printf ("Usage:\n%s\n", cmdtp
->usage
);
1360 #if defined(CONFIG_CMD_BOOTD)
1361 /* avoid "bootd" recursion */
1362 if (cmdtp
->cmd
== do_bootd
) {
1364 printf ("[%s]\n", finaltoken
);
1366 if (flag
& CMD_FLAG_BOOTD
) {
1367 puts ("'bootd' recursion detected\n");
1371 flag
|= CMD_FLAG_BOOTD
;
1376 /* OK - call function to do the command */
1377 if ((cmdtp
->cmd
) (cmdtp
, flag
, argc
, argv
) != 0) {
1381 repeatable
&= cmdtp
->repeatable
;
1383 /* Did the user stop this? */
1385 return -1; /* if stopped then not repeatable */
1388 return rc
? rc
: repeatable
;
1391 /****************************************************************************/
1393 #if defined(CONFIG_CMD_RUN)
1394 int do_run (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
1399 printf ("Usage:\n%s\n", cmdtp
->usage
);
1403 for (i
=1; i
<argc
; ++i
) {
1406 if ((arg
= getenv (argv
[i
])) == NULL
) {
1407 printf ("## Error: \"%s\" not defined\n", argv
[i
]);
1410 #ifndef CFG_HUSH_PARSER
1411 if (run_command (arg
, flag
) == -1)
1414 if (parse_string_outer(arg
,
1415 FLAG_PARSE_SEMICOLON
| FLAG_EXIT_FROM_LOOP
) != 0)