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#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_GROUP(CMD_GRP_SCRIPT)
BAREBOX_CMD_HELP(cmd_readf_help)
BAREBOX_CMD_END
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