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 #ifdef CONFIG_SILENT_CONSOLE
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 static int parse_line (char *, char *[]);
63 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
64 static int abortboot(int);
69 char console_buffer
[CFG_CBSIZE
]; /* console I/O buffer */
71 #ifndef CONFIG_CMDLINE_EDITING
72 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
);
73 static char erase_seq
[] = "\b \b"; /* erase sequence */
74 static char tab_seq
[] = " "; /* used to expand TABs */
75 #endif /* CONFIG_CMDLINE_EDITING */
77 #ifdef CONFIG_BOOT_RETRY_TIME
78 static uint64_t endtime
= 0; /* must be set, default is instant timeout */
79 static int retry_time
= -1; /* -1 so can call readline before main_loop */
82 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
84 #ifndef CONFIG_BOOT_RETRY_MIN
85 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
88 #ifdef CONFIG_MODEM_SUPPORT
90 extern void mdm_init(void); /* defined in board.c */
93 /***************************************************************************
94 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
95 * returns: 0 - no key string, allow autoboot
96 * 1 - got key string, abort
98 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
99 # if defined(CONFIG_AUTOBOOT_KEYED)
100 static __inline__
int abortboot(int bootdelay
)
103 uint64_t etime
= endtick(bootdelay
);
110 { str
: getenv ("bootdelaykey"), retry
: 1 },
111 { str
: getenv ("bootdelaykey2"), retry
: 1 },
112 { str
: getenv ("bootstopkey"), retry
: 0 },
113 { str
: getenv ("bootstopkey2"), retry
: 0 },
116 char presskey
[MAX_DELAY_STOP_STR
];
117 u_int presskey_len
= 0;
118 u_int presskey_max
= 0;
121 # ifdef CONFIG_AUTOBOOT_PROMPT
122 printf(CONFIG_AUTOBOOT_PROMPT
, bootdelay
);
125 # ifdef CONFIG_AUTOBOOT_DELAY_STR
126 if (delaykey
[0].str
== NULL
)
127 delaykey
[0].str
= CONFIG_AUTOBOOT_DELAY_STR
;
129 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
130 if (delaykey
[1].str
== NULL
)
131 delaykey
[1].str
= CONFIG_AUTOBOOT_DELAY_STR2
;
133 # ifdef CONFIG_AUTOBOOT_STOP_STR
134 if (delaykey
[2].str
== NULL
)
135 delaykey
[2].str
= CONFIG_AUTOBOOT_STOP_STR
;
137 # ifdef CONFIG_AUTOBOOT_STOP_STR2
138 if (delaykey
[3].str
== NULL
)
139 delaykey
[3].str
= CONFIG_AUTOBOOT_STOP_STR2
;
142 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
143 delaykey
[i
].len
= delaykey
[i
].str
== NULL
?
144 0 : strlen (delaykey
[i
].str
);
145 delaykey
[i
].len
= delaykey
[i
].len
> MAX_DELAY_STOP_STR
?
146 MAX_DELAY_STOP_STR
: delaykey
[i
].len
;
148 presskey_max
= presskey_max
> delaykey
[i
].len
?
149 presskey_max
: delaykey
[i
].len
;
152 printf("%s key:<%s>\n",
153 delaykey
[i
].retry
? "delay" : "stop",
154 delaykey
[i
].str
? delaykey
[i
].str
: "NULL");
158 /* In order to keep up with incoming data, check timeout only
161 while (!abort
&& get_ticks() <= etime
) {
162 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
163 if (delaykey
[i
].len
> 0 &&
164 presskey_len
>= delaykey
[i
].len
&&
165 memcmp (presskey
+ presskey_len
- delaykey
[i
].len
,
167 delaykey
[i
].len
) == 0) {
169 printf("got %skey\n",
170 delaykey
[i
].retry
? "delay" : "stop");
173 # ifdef CONFIG_BOOT_RETRY_TIME
174 /* don't retry auto boot */
175 if (! delaykey
[i
].retry
)
183 if (presskey_len
< presskey_max
) {
184 presskey
[presskey_len
++] = getc();
187 for (i
= 0; i
< presskey_max
- 1; i
++)
188 presskey
[i
] = presskey
[i
+ 1];
190 presskey
[i
] = getc();
196 puts("key timeout\n");
199 #ifdef CONFIG_SILENT_CONSOLE
201 gd
->flags
&= ~GD_FLG_SILENT
;
207 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
209 #ifdef CONFIG_MENUKEY
210 static int menukey
= 0;
213 static __inline__
int abortboot(int bootdelay
)
217 #ifdef CONFIG_MENUPROMPT
218 printf(CONFIG_MENUPROMPT
, bootdelay
);
220 printf("Hit any key to stop autoboot: %2d ", bootdelay
);
223 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
225 * Check if key already pressed
226 * Don't check if bootdelay < 0
228 if (bootdelay
>= 0) {
229 if (tstc()) { /* we got a key press */
230 (void) getc(); /* consume input */
232 abort
= 1; /* don't auto boot */
237 while ((bootdelay
> 0) && (!abort
)) {
241 /* delay 100 * 10ms */
242 for (i
=0; !abort
&& i
<100; ++i
) {
243 if (tstc()) { /* we got a key press */
244 abort
= 1; /* don't auto boot */
245 bootdelay
= 0; /* no more delay */
246 # ifdef CONFIG_MENUKEY
249 (void) getc(); /* consume input */
256 printf("\b\b\b%2d ", bootdelay
);
261 #ifdef CONFIG_SILENT_CONSOLE
263 gd
->flags
&= ~GD_FLG_SILENT
;
268 # endif /* CONFIG_AUTOBOOT_KEYED */
269 #endif /* CONFIG_BOOTDELAY >= 0 */
271 /****************************************************************************/
273 void main_loop (void)
275 #ifndef CFG_HUSH_PARSER
276 static char lastcommand
[CFG_CBSIZE
] = { 0, };
282 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
286 #ifdef CONFIG_PREBOOT
289 #ifdef CONFIG_BOOTCOUNT_LIMIT
290 unsigned long bootcount
= 0;
291 unsigned long bootlimit
= 0;
294 #endif /* CONFIG_BOOTCOUNT_LIMIT */
296 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
297 ulong bmp
= 0; /* default bitmap */
298 extern int trab_vfd (ulong bitmap
);
300 #ifdef CONFIG_MODEM_SUPPORT
302 bmp
= 1; /* alternate bitmap */
305 #endif /* CONFIG_VFD && VFD_TEST_LOGO */
307 #ifdef CONFIG_BOOTCOUNT_LIMIT
308 bootcount
= bootcount_load();
310 bootcount_store (bootcount
);
311 sprintf (bcs_set
, "%lu", bootcount
);
312 setenv ("bootcount", bcs_set
);
313 bcs
= getenv ("bootlimit");
314 bootlimit
= bcs
? simple_strtoul (bcs
, NULL
, 10) : 0;
315 #endif /* CONFIG_BOOTCOUNT_LIMIT */
317 #ifdef CONFIG_MODEM_SUPPORT
318 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init
);
320 char *str
= strdup(getenv("mdm_cmd"));
321 setenv ("preboot", str
); /* set or delete definition */
324 mdm_init(); /* wait for modem connection */
326 #endif /* CONFIG_MODEM_SUPPORT */
328 #ifdef CONFIG_VERSION_VARIABLE
330 extern char version_string
[];
332 setenv ("ver", version_string
); /* set version variable */
334 #endif /* CONFIG_VERSION_VARIABLE */
336 #ifdef CFG_HUSH_PARSER
337 u_boot_hush_start ();
340 #ifdef CONFIG_AUTO_COMPLETE
341 install_auto_complete();
344 #ifdef CONFIG_PREBOOT
345 if ((p
= getenv ("preboot")) != NULL
) {
346 # ifdef CONFIG_AUTOBOOT_KEYED
347 int prev
= disable_ctrlc(1); /* disable Control C checking */
350 # ifndef CFG_HUSH_PARSER
353 parse_string_outer(p
, FLAG_PARSE_SEMICOLON
|
354 FLAG_EXIT_FROM_LOOP
);
357 # ifdef CONFIG_AUTOBOOT_KEYED
358 disable_ctrlc(prev
); /* restore Control C checking */
361 #endif /* CONFIG_PREBOOT */
363 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
364 s
= getenv ("bootdelay");
365 bootdelay
= s
? (int)simple_strtol(s
, NULL
, 10) : CONFIG_BOOTDELAY
;
367 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay
);
369 # ifdef CONFIG_BOOT_RETRY_TIME
371 # endif /* CONFIG_BOOT_RETRY_TIME */
373 #ifdef CONFIG_BOOTCOUNT_LIMIT
374 if (bootlimit
&& (bootcount
> bootlimit
)) {
375 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
376 (unsigned)bootlimit
);
377 s
= getenv ("altbootcmd");
380 #endif /* CONFIG_BOOTCOUNT_LIMIT */
381 s
= getenv ("bootcmd");
383 debug ("### main_loop: bootcmd=\"%s\"\n", s
? s
: "<UNDEFINED>");
385 if (bootdelay
>= 0 && s
&& !abortboot (bootdelay
)) {
386 # ifdef CONFIG_AUTOBOOT_KEYED
387 int prev
= disable_ctrlc(1); /* disable Control C checking */
390 # ifndef CFG_HUSH_PARSER
393 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
394 FLAG_EXIT_FROM_LOOP
);
397 # ifdef CONFIG_AUTOBOOT_KEYED
398 disable_ctrlc(prev
); /* restore Control C checking */
402 # ifdef CONFIG_MENUKEY
403 if (menukey
== CONFIG_MENUKEY
) {
404 s
= getenv("menucmd");
406 # ifndef CFG_HUSH_PARSER
409 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
410 FLAG_EXIT_FROM_LOOP
);
414 #endif /* CONFIG_MENUKEY */
415 #endif /* CONFIG_BOOTDELAY */
417 #ifdef CONFIG_AMIGAONEG3SE
419 extern void video_banner(void);
425 * Main Loop for Monitor Command Processing
427 #ifdef CFG_HUSH_PARSER
429 /* This point is never reached */
433 #ifdef CONFIG_BOOT_RETRY_TIME
435 /* Saw enough of a valid command to
436 * restart the timeout.
441 len
= readline (CFG_PROMPT
);
443 flag
= 0; /* assume no special flags for now */
445 strcpy (lastcommand
, console_buffer
);
447 flag
|= CMD_FLAG_REPEAT
;
448 #ifdef CONFIG_BOOT_RETRY_TIME
449 else if (len
== -2) {
450 /* -2 means timed out, retry autoboot
452 puts ("\nTimed out waiting for command\n");
453 # ifdef CONFIG_RESET_TO_RETRY
454 /* Reinit board to run initialization code again */
455 do_reset (NULL
, 0, 0, NULL
);
457 return; /* retry autoboot */
463 puts ("<INTERRUPT>\n");
465 rc
= run_command (lastcommand
, flag
);
468 /* invalid command or not repeatable, forget it */
472 #endif /*CFG_HUSH_PARSER*/
475 #ifdef CONFIG_BOOT_RETRY_TIME
476 /***************************************************************************
477 * initialize command line timeout
479 void init_cmd_timeout(void)
481 char *s
= getenv ("bootretry");
484 retry_time
= (int)simple_strtol(s
, NULL
, 10);
486 retry_time
= CONFIG_BOOT_RETRY_TIME
;
488 if (retry_time
>= 0 && retry_time
< CONFIG_BOOT_RETRY_MIN
)
489 retry_time
= CONFIG_BOOT_RETRY_MIN
;
492 /***************************************************************************
493 * reset command line timeout to retry_time seconds
495 void reset_cmd_timeout(void)
497 endtime
= endtick(retry_time
);
501 #ifdef CONFIG_CMDLINE_EDITING
504 * cmdline-editing related codes from vivi.
505 * Author: Janghoon Lyu <nandy@mizi.com>
508 #define putnstr(str,n) do { \
509 printf ("%.*s", n, str); \
512 #define CTL_CH(c) ((c) - 'a' + 1)
514 #define MAX_CMDBUF_SIZE 256
516 #define CTL_BACKSPACE ('\b')
517 #define DEL ((char)255)
518 #define DEL7 ((char)127)
519 #define CREAD_HIST_CHAR ('!')
521 #define getcmd_putch(ch) putc(ch)
522 #define getcmd_getch() getc()
523 #define getcmd_cbeep() getcmd_putch('\a')
526 #define HIST_SIZE MAX_CMDBUF_SIZE
528 static int hist_max
= 0;
529 static int hist_add_idx
= 0;
530 static int hist_cur
= -1;
531 unsigned hist_num
= 0;
533 char* hist_list
[HIST_MAX
];
534 char hist_lines
[HIST_MAX
][HIST_SIZE
];
536 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
538 static void hist_init(void)
547 for (i
= 0; i
< HIST_MAX
; i
++) {
548 hist_list
[i
] = hist_lines
[i
];
549 hist_list
[i
][0] = '\0';
553 static void cread_add_to_hist(char *line
)
555 strcpy(hist_list
[hist_add_idx
], line
);
557 if (++hist_add_idx
>= HIST_MAX
)
560 if (hist_add_idx
> hist_max
)
561 hist_max
= hist_add_idx
;
566 static char* hist_prev(void)
578 if (hist_cur
== hist_add_idx
) {
582 ret
= hist_list
[hist_cur
];
587 static char* hist_next(void)
594 if (hist_cur
== hist_add_idx
)
597 if (++hist_cur
> hist_max
)
600 if (hist_cur
== hist_add_idx
) {
603 ret
= hist_list
[hist_cur
];
608 #ifndef CONFIG_CMDLINE_EDITING
609 static void cread_print_hist_list(void)
614 n
= hist_num
- hist_max
;
616 i
= hist_add_idx
+ 1;
620 if (i
== hist_add_idx
)
622 printf("%s\n", hist_list
[i
]);
627 #endif /* CONFIG_CMDLINE_EDITING */
629 #define BEGINNING_OF_LINE() { \
631 getcmd_putch(CTL_BACKSPACE); \
636 #define ERASE_TO_EOL() { \
637 if (num < eol_num) { \
639 for (tmp = num; tmp < eol_num; tmp++) \
641 while (tmp-- > num) \
642 getcmd_putch(CTL_BACKSPACE); \
647 #define REFRESH_TO_EOL() { \
648 if (num < eol_num) { \
649 wlen = eol_num - num; \
650 putnstr(buf + num, wlen); \
655 static void cread_add_char(char ichar
, int insert
, unsigned long *num
,
656 unsigned long *eol_num
, char *buf
, unsigned long len
)
661 if (insert
|| *num
== *eol_num
) {
662 if (*eol_num
> len
- 1) {
670 wlen
= *eol_num
- *num
;
672 memmove(&buf
[*num
+1], &buf
[*num
], wlen
-1);
676 putnstr(buf
+ *num
, wlen
);
679 getcmd_putch(CTL_BACKSPACE
);
682 /* echo the character */
685 putnstr(buf
+ *num
, wlen
);
690 static void cread_add_str(char *str
, int strsize
, int insert
, unsigned long *num
,
691 unsigned long *eol_num
, char *buf
, unsigned long len
)
694 cread_add_char(*str
, insert
, num
, eol_num
, buf
, len
);
699 static int cread_line(char *buf
, unsigned int *len
)
701 unsigned long num
= 0;
702 unsigned long eol_num
= 0;
713 ichar
= getcmd_getch();
715 if ((ichar
== '\n') || (ichar
== '\r')) {
721 * handle standard linux xterm esc sequences for arrow key, etc.
726 esc_save
[esc_len
] = ichar
;
729 cread_add_str(esc_save
, esc_len
, insert
,
730 &num
, &eol_num
, buf
, *len
);
738 case 'D': /* <- key */
742 case 'C': /* -> key */
745 break; /* pass off to ^F handler */
746 case 'H': /* Home key */
749 break; /* pass off to ^A handler */
750 case 'A': /* up arrow */
753 break; /* pass off to ^P handler */
754 case 'B': /* down arrow */
757 break; /* pass off to ^N handler */
759 esc_save
[esc_len
++] = ichar
;
760 cread_add_str(esc_save
, esc_len
, insert
,
761 &num
, &eol_num
, buf
, *len
);
770 esc_save
[esc_len
] = ichar
;
773 puts("impossible condition #876\n");
781 case CTL_CH('c'): /* ^C - break */
782 *buf
= '\0'; /* discard input */
786 getcmd_putch(buf
[num
]);
792 getcmd_putch(CTL_BACKSPACE
);
798 wlen
= eol_num
- num
- 1;
800 memmove(&buf
[num
], &buf
[num
+1], wlen
);
801 putnstr(buf
+ num
, wlen
);
806 getcmd_putch(CTL_BACKSPACE
);
828 wlen
= eol_num
- num
;
830 memmove(&buf
[num
], &buf
[num
+1], wlen
);
831 getcmd_putch(CTL_BACKSPACE
);
832 putnstr(buf
+ num
, wlen
);
835 getcmd_putch(CTL_BACKSPACE
);
847 if (ichar
== CTL_CH('p'))
857 /* nuke the current line */
861 /* erase to end of line */
864 /* copy new line into place and display */
866 eol_num
= strlen(buf
);
871 cread_add_char(ichar
, insert
, &num
, &eol_num
, buf
, *len
);
876 buf
[eol_num
] = '\0'; /* lose the newline */
878 if (buf
[0] && buf
[0] != CREAD_HIST_CHAR
)
879 cread_add_to_hist(buf
);
880 hist_cur
= hist_add_idx
;
885 #endif /* CONFIG_CMDLINE_EDITING */
887 /****************************************************************************/
890 * Prompt for input and read a line.
891 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
892 * time out when time goes past endtime (timebase time in ticks).
893 * Return: number of read characters
897 int readline (const char *const prompt
)
899 #ifdef CONFIG_CMDLINE_EDITING
900 char *p
= console_buffer
;
901 unsigned int len
=MAX_CMDBUF_SIZE
;
903 static int initted
= 0;
912 rc
= cread_line(p
, &len
);
913 return rc
< 0 ? rc
: len
;
915 char *p
= console_buffer
;
916 int n
= 0; /* buffer index */
917 int plen
= 0; /* prompt length */
918 int col
; /* output column cnt */
923 plen
= strlen (prompt
);
929 #ifdef CONFIG_BOOT_RETRY_TIME
930 while (!tstc()) { /* while no incoming data */
931 if (retry_time
>= 0 && get_ticks() > endtime
)
932 return (-2); /* timed out */
935 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
937 #ifdef CONFIG_SHOW_ACTIVITY
939 extern void show_activity(int arg
);
946 * Special character handling
949 case '\r': /* Enter */
953 return (p
- console_buffer
);
958 case 0x03: /* ^C - break */
959 console_buffer
[0] = '\0'; /* discard input */
962 case 0x15: /* ^U - erase line */
971 case 0x17: /* ^W - erase word */
972 p
=delete_char(console_buffer
, p
, &col
, &n
, plen
);
973 while ((n
> 0) && (*p
!= ' ')) {
974 p
=delete_char(console_buffer
, p
, &col
, &n
, plen
);
978 case 0x08: /* ^H - backspace */
979 case 0x7F: /* DEL - backspace */
980 p
=delete_char(console_buffer
, p
, &col
, &n
, plen
);
985 * Must be a normal character then
987 if (n
< CFG_CBSIZE
-2) {
988 if (c
== '\t') { /* expand TABs */
989 #ifdef CONFIG_AUTO_COMPLETE
990 /* if auto completion triggered just continue */
992 if (cmd_auto_complete(prompt
, console_buffer
, &n
, &col
)) {
993 p
= console_buffer
+ n
; /* reset */
997 puts (tab_seq
+(col
&07));
1000 ++col
; /* echo input */
1005 } else { /* Buffer full */
1010 #endif /* CONFIG_CMDLINE_EDITING */
1013 /****************************************************************************/
1015 #ifndef CONFIG_CMDLINE_EDITING
1016 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
)
1024 if (*(--p
) == '\t') { /* will retype the whole line */
1025 while (*colp
> plen
) {
1029 for (s
=buffer
; s
<p
; ++s
) {
1031 puts (tab_seq
+((*colp
) & 07));
1032 *colp
+= 8 - ((*colp
) & 07);
1045 #endif /* CONFIG_CMDLINE_EDITING */
1047 /****************************************************************************/
1049 int parse_line (char *line
, char *argv
[])
1054 printf ("parse_line: \"%s\"\n", line
);
1056 while (nargs
< CFG_MAXARGS
) {
1058 /* skip any white space */
1059 while ((*line
== ' ') || (*line
== '\t')) {
1063 if (*line
== '\0') { /* end of line, no more args */
1066 printf ("parse_line: nargs=%d\n", nargs
);
1071 argv
[nargs
++] = line
; /* begin of argument string */
1073 /* find end of string */
1074 while (*line
&& (*line
!= ' ') && (*line
!= '\t')) {
1078 if (*line
== '\0') { /* end of line, no more args */
1081 printf ("parse_line: nargs=%d\n", nargs
);
1086 *line
++ = '\0'; /* terminate current arg */
1089 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS
);
1092 printf ("parse_line: nargs=%d\n", nargs
);
1097 /****************************************************************************/
1099 static void process_macros (const char *input
, char *output
)
1102 const char *varname_start
= NULL
;
1103 int inputcnt
= strlen (input
);
1104 int outputcnt
= CFG_CBSIZE
;
1105 int state
= 0; /* 0 = waiting for '$' */
1107 /* 1 = waiting for '(' or '{' */
1108 /* 2 = waiting for ')' or '}' */
1109 /* 3 = waiting for ''' */
1111 char *output_start
= output
;
1113 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input
),
1117 prev
= '\0'; /* previous character */
1119 while (inputcnt
&& outputcnt
) {
1124 /* remove one level of escape characters */
1125 if ((c
== '\\') && (prev
!= '\\')) {
1126 if (inputcnt
-- == 0)
1134 case 0: /* Waiting for (unescaped) $ */
1135 if ((c
== '\'') && (prev
!= '\\')) {
1139 if ((c
== '$') && (prev
!= '\\')) {
1146 case 1: /* Waiting for ( */
1147 if (c
== '(' || c
== '{') {
1149 varname_start
= input
;
1161 case 2: /* Waiting for ) */
1162 if (c
== ')' || c
== '}') {
1164 char envname
[CFG_CBSIZE
], *envval
;
1165 int envcnt
= input
- varname_start
- 1; /* Varname # of chars */
1167 /* Get the varname */
1168 for (i
= 0; i
< envcnt
; i
++) {
1169 envname
[i
] = varname_start
[i
];
1174 envval
= getenv (envname
);
1176 /* Copy into the line if it exists */
1178 while ((*envval
) && outputcnt
) {
1179 *(output
++) = *(envval
++);
1182 /* Look for another '$' */
1186 case 3: /* Waiting for ' */
1187 if ((c
== '\'') && (prev
!= '\\')) {
1204 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1205 strlen (output_start
), output_start
);
1209 /****************************************************************************
1211 * 1 - command executed, repeatable
1212 * 0 - command executed but not repeatable, interrupted commands are
1213 * always considered not repeatable
1214 * -1 - not executed (unrecognized, bootd recursion or too many args)
1215 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is
1216 * considered unrecognized)
1220 * We must create a temporary copy of the command since the command we get
1221 * may be the result from getenv(), which returns a pointer directly to
1222 * the environment data, which may change magicly when the command we run
1223 * creates or modifies environment variables (like "bootp" does).
1226 int run_command (const char *cmd
, int flag
)
1229 char cmdbuf
[CFG_CBSIZE
]; /* working copy of cmd */
1230 char *token
; /* start of token in cmdbuf */
1231 char *sep
; /* end of token (separator) in cmdbuf */
1232 char finaltoken
[CFG_CBSIZE
];
1234 char *argv
[CFG_MAXARGS
+ 1]; /* NULL terminated */
1240 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd
);
1241 puts (cmd
? cmd
: "NULL"); /* use puts - string may be loooong */
1245 clear_ctrlc(); /* forget any previous Control C */
1247 if (!cmd
|| !*cmd
) {
1248 return -1; /* empty command */
1251 if (strlen(cmd
) >= CFG_CBSIZE
) {
1252 puts ("## Command too long!\n");
1256 strcpy (cmdbuf
, cmd
);
1258 /* Process separators and check for invalid
1259 * repeatable commands
1263 printf ("[PROCESS_SEPARATORS] %s\n", cmd
);
1268 * Find separator, or string end
1269 * Allow simple escape of ';' by writing "\;"
1271 for (inquotes
= 0, sep
= str
; *sep
; sep
++) {
1277 (*sep
== ';') && /* separator */
1278 ( sep
!= str
) && /* past string start */
1279 (*(sep
-1) != '\\')) /* and NOT escaped */
1284 * Limit the token to data between separators
1288 str
= sep
+ 1; /* start of command for next pass */
1292 str
= sep
; /* no more commands for next pass */
1294 printf ("token: \"%s\"\n", token
);
1297 /* find macros in this token and replace them */
1298 process_macros (token
, finaltoken
);
1300 /* Extract arguments */
1301 if ((argc
= parse_line (finaltoken
, argv
)) == 0) {
1302 rc
= -1; /* no command at all */
1306 /* Look up command in command table */
1307 if ((cmdtp
= find_cmd(argv
[0])) == NULL
) {
1308 printf ("Unknown command '%s' - try 'help'\n", argv
[0]);
1309 rc
= -1; /* give up after bad command */
1313 /* found - check max args */
1314 if (argc
> cmdtp
->maxargs
) {
1315 printf ("Usage:\n%s\n", cmdtp
->usage
);
1320 #if defined(CONFIG_CMD_BOOTD)
1321 /* avoid "bootd" recursion */
1322 if (cmdtp
->cmd
== do_bootd
) {
1324 printf ("[%s]\n", finaltoken
);
1326 if (flag
& CMD_FLAG_BOOTD
) {
1327 puts ("'bootd' recursion detected\n");
1331 flag
|= CMD_FLAG_BOOTD
;
1336 /* OK - call function to do the command */
1337 if ((cmdtp
->cmd
) (cmdtp
, flag
, argc
, argv
) != 0) {
1341 repeatable
&= cmdtp
->repeatable
;
1343 /* Did the user stop this? */
1345 return -1; /* if stopped then not repeatable */
1348 return rc
? rc
: repeatable
;
1351 /****************************************************************************/
1353 #if defined(CONFIG_CMD_RUN)
1354 int do_run (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
1359 printf ("Usage:\n%s\n", cmdtp
->usage
);
1363 for (i
=1; i
<argc
; ++i
) {
1366 if ((arg
= getenv (argv
[i
])) == NULL
) {
1367 printf ("## Error: \"%s\" not defined\n", argv
[i
]);
1370 #ifndef CFG_HUSH_PARSER
1371 if (run_command (arg
, flag
) == -1)
1374 if (parse_string_outer(arg
,
1375 FLAG_PARSE_SEMICOLON
| FLAG_EXIT_FROM_LOOP
) != 0)