process_escape_sequence: add support to \$?
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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@ -123,6 +123,7 @@
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#include <linux/list.h>
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#include <binfmt.h>
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#include <init.h>
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#include <shell.h>
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/*cmd_boot.c*/
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extern int do_bootd(int flag, int argc, char *argv[]); /* do_bootd */
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@ -226,6 +227,11 @@ static char console_buffer[CONFIG_CBSIZE]; /* console I/O buffer */
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* the first three support $?, $#, and $1 */
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static unsigned int last_return_code;
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int shell_get_last_return_code(void)
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{
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return last_return_code;
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}
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/* "globals" within this file */
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static uchar *ifs;
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static char map[256];
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@ -1,6 +1,15 @@
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <shell.h>
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/*
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* not yet supported
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*/
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int shell_get_last_return_code(void)
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{
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return 0;
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}
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static int parse_line (char *line, char *argv[])
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{
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@ -0,0 +1,12 @@
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/*
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* (C) Copyright 2013 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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*
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* Under GPLv2 only
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*/
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#ifndef __SHELL_H__
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#define __SHELL_H__
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int shell_get_last_return_code(void);
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#endif /* __SHELL_H__ */
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@ -19,6 +19,7 @@
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#include <common.h>
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#include <fs.h>
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#include <libbb.h>
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#include <shell.h>
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int process_escape_sequence(const char *source, char *dest, int destlen)
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{
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@ -59,6 +60,12 @@ int process_escape_sequence(const char *source, char *dest, int destlen)
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case 'w':
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i += snprintf(dest + i, destlen - i, "%s", getcwd());
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break;
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case '$':
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if (*(source + 2) == '?') {
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i += snprintf(dest + i, destlen - i, "%d", shell_get_last_return_code());
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source++;
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break;
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}
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default:
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dest[i++] = '\\';
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dest[i++] = *(source + 1);
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