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Add run_command_list() to run a list of commands

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This new function runs a list of commands separated by semicolon or newline.
We move this out of cmd_source so that it can be used by other code. The
PXE code also uses the new function.

Suggested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2012-03-30 21:30:55 +00:00
committed by Wolfgang Denk
parent 213adf6dff
commit d51004a832
4 changed files with 102 additions and 65 deletions
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85
common/main.c
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@@ -30,6 +30,7 @@
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <malloc.h>
#include <version.h>
#ifdef CONFIG_MODEM_SUPPORT
#include <malloc.h> /* for free() prototype */
@@ -1373,6 +1374,90 @@ int run_command(const char *cmd, int flag)
#endif
}
#ifndef CONFIG_SYS_HUSH_PARSER
/**
* Execute a list of command separated by ; or \n using the built-in parser.
*
* This function cannot take a const char * for the command, since if it
* finds newlines in the string, it replaces them with \0.
*
* @param cmd String containing list of commands
* @param flag Execution flags (CMD_FLAG_...)
* @return 0 on success, or != 0 on error.
*/
static int builtin_run_command_list(char *cmd, int flag)
{
char *line, *next;
int rcode = 0;
/*
* Break into individual lines, and execute each line; terminate on
* error.
*/
line = next = cmd;
while (*next) {
if (*next == '\n') {
*next = '\0';
/* run only non-empty commands */
if (*line) {
debug("** exec: \"%s\"\n", line);
if (builtin_run_command(line, 0) < 0) {
rcode = 1;
break;
}
}
line = next + 1;
}
++next;
}
if (rcode == 0 && *line)
rcode = (builtin_run_command(line, 0) >= 0);
return rcode;
}
#endif
int run_command_list(const char *cmd, int len, int flag)
{
int need_buff = 1;
char *buff = (char *)cmd; /* cast away const */
int rcode = 0;
if (len == -1) {
len = strlen(cmd);
#ifdef CONFIG_SYS_HUSH_PARSER
/* hush will never change our string */
need_buff = 0;
#else
/* the built-in parser will change our string if it sees \n */
need_buff = strchr(cmd, '\n') != NULL;
#endif
}
if (need_buff) {
buff = malloc(len + 1);
if (!buff)
return 1;
memcpy(buff, cmd, len);
buff[len] = '\0';
}
#ifdef CONFIG_SYS_HUSH_PARSER
rcode = parse_string_outer(buff, FLAG_PARSE_SEMICOLON);
#else
/*
* This function will overwrite any \n it sees with a \0, which
* is why it can't work with a const char *. Here we are making
* using of internal knowledge of this function, to avoid always
* doing a malloc() which is actually required only in a case that
* is pretty rare.
*/
rcode = builtin_run_command_list(buff, flag);
if (need_buff)
free(buff);
#endif
return rcode;
}
/****************************************************************************/
#if defined(CONFIG_CMD_RUN)