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add process_escape_sequence function 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2010-03-29 10:56:19 +02:00
parent 362d6375aa
commit adaffb5b0c
4 changed files with 84 additions and 0 deletions
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2
include/libbb.h
View File

@ -28,4 +28,6 @@ char * safe_strncpy(char *dst, const char *src, size_t size);
int copy_file(const char *src, const char *dst);
int process_escape_sequence(const char *source, char *dest, int destlen);
#endif /* __LIBBB_H */

3
lib/Kconfig
View File

@ -13,5 +13,8 @@ config CRC16
config GENERIC_FIND_NEXT_BIT
def_bool n
config PROCESS_ESCAPE_SEQUENCE
def_bool n
source lib/lzo/Kconfig

1
lib/Makefile
View File

@ -30,3 +30,4 @@ obj-y += notifier.o
obj-y += copy_file.o
obj-y += lzo/
obj-$(CONFIG_LZO_DECOMPRESS) += decompress_unlzo.o
obj-$(CONFIG_PROCESS_ESCAPE_SEQUENCE) += process_escape_sequence.o

78
lib/process_escape_sequence.c Normal file
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@ -0,0 +1,78 @@
/*
* process_esacpe_sequence.c
*
* Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <common.h>
#include <fs.h>
int process_escape_sequence(const char *source, char *dest, int destlen)
{
int i = 0;
while (*source) {
if (*source == '\\') {
switch (*(source + 1)) {
case 0:
return 0;
case '\\':
dest[i++] = '\\';
break;
case 'a':
dest[i++] = '\a';
break;
case 'b':
dest[i++] = '\b';
break;
case 'n':
dest[i++] = '\n';
break;
case 'r':
dest[i++] = '\r';
break;
case 't':
dest[i++] = '\t';
break;
case 'f':
dest[i++] = '\f';
break;
case 'e':
dest[i++] = 0x1b;
break;
case 'h':
i += snprintf(dest + i, destlen - i, "%s", CONFIG_BOARDINFO);
break;
case 'w':
i += snprintf(dest + i, destlen - i, "%s", getcwd());
break;
default:
dest[i++] = '\\';
dest[i++] = *(source + 1);
}
source++;
} else
dest[i++] = *source;
source++;
if (!(destlen - i))
break;
}
dest[i] = 0;
return 0;
}