u-boot/common/cli.c

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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Add to readline cmdline-editing by
* (C) Copyright 2005
* JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <cli.h>
#include <cli_hush.h>
#include <malloc.h>
/*
* Run a command using the selected parser.
*
* @param cmd Command to run
* @param flag Execution flags (CMD_FLAG_...)
* @return 0 on success, or != 0 on error.
*/
int run_command(const char *cmd, int flag)
{
#ifndef CONFIG_SYS_HUSH_PARSER
/*
* cli_run_command can return 0 or 1 for success, so clean up
* its result.
*/
if (cli_simple_run_command(cmd, flag) == -1)
return 1;
return 0;
#else
return parse_string_outer(cmd,
FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP);
#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 = cli_simple_run_command_list(buff, flag);
if (need_buff)
free(buff);
#endif
return rcode;
}
/****************************************************************************/
#if defined(CONFIG_CMD_RUN)
int do_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int i;
if (argc < 2)
return CMD_RET_USAGE;
for (i = 1; i < argc; ++i) {
char *arg;
arg = getenv(argv[i]);
if (arg == NULL) {
printf("## Error: \"%s\" not defined\n", argv[i]);
return 1;
}
if (run_command(arg, flag) != 0)
return 1;
}
return 0;
}
#endif