64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
#include <common.h>
|
|
#include <command.h>
|
|
#include <fs.h>
|
|
#include <malloc.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/ctype.h>
|
|
#include <environment.h>
|
|
|
|
static int do_readf(int argc, char *argv[])
|
|
{
|
|
unsigned char *buf = NULL, *val;
|
|
char *variable, *filename;
|
|
struct stat s;
|
|
size_t size;
|
|
int ret, i;
|
|
|
|
if (argc != 3)
|
|
return COMMAND_ERROR_USAGE;
|
|
|
|
filename = argv[1];
|
|
variable = argv[2];
|
|
|
|
ret = stat(filename, &s);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (s.st_size > 1024) {
|
|
ret = -EFBIG;
|
|
goto out;
|
|
}
|
|
|
|
buf = read_file(filename, &size);
|
|
if (!buf)
|
|
goto out;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
if (!isprint(buf[i])) {
|
|
buf[i] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
|
|
val = strim(buf);
|
|
|
|
ret = setenv(variable, val);
|
|
out:
|
|
free(buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
BAREBOX_CMD_HELP_START(readf)
|
|
BAREBOX_CMD_HELP_USAGE("readf <file> <variable>\n")
|
|
BAREBOX_CMD_HELP_SHORT("Read a single line of a file into a shell variable. Leading and trailing whitespaces\n")
|
|
BAREBOX_CMD_HELP_SHORT("are removed, nonvisible characters are stripped. Input is limited to 1024\n")
|
|
BAREBOX_CMD_HELP_SHORT("characters.\n")
|
|
BAREBOX_CMD_HELP_END
|
|
|
|
BAREBOX_CMD_START(readf)
|
|
.cmd = do_readf,
|
|
.usage = "read file into variable",
|
|
BAREBOX_CMD_HELP(cmd_readf_help)
|
|
BAREBOX_CMD_END
|