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/*
* Copyright (c) 2007 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.
*
*/
/**
* @file
* @brief Concatenate files to stdout command
*/
#include <common.h>
#include <command.h>
#include <fs.h>
#include <fcntl.h>
#include <linux/ctype.h>
#include <errno.h>
#include <xfuncs.h>
#include <malloc.h>
#define BUFSIZE 1024
/**
* @param[in] argc Argument count from command line
* @param[in] argv List of input arguments
*/
static int do_cat(int argc, char *argv[])
{
int ret;
int fd, i;
char *buf;
int err = 0;
int args = 1;
if (argc < 2) {
perror("cat");
return 1;
}
buf = xmalloc(BUFSIZE);
while (args < argc) {
fd = open(argv[args], O_RDONLY);
if (fd < 0) {
err = 1;
printf("could not open %s: %s\n", argv[args], errno_str());
goto out;
}
while((ret = read(fd, buf, BUFSIZE)) > 0) {
for(i = 0; i < ret; i++) {
if (isprint(buf[i]) || buf[i] == '\n' || buf[i] == '\t')
putchar(buf[i]);
else
putchar('.');
}
if(ctrlc()) {
err = 1;
close(fd);
goto out;
}
}
close(fd);
args++;
}
out:
free(buf);
return err;
}
BAREBOX_CMD_HELP_START(cat)
BAREBOX_CMD_HELP_TEXT("Currently only printable characters and NL, TAB are printed.")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(cat)
.cmd = do_cat,
BAREBOX_CMD_DESC("concatenate file(s) to stdout")
BAREBOX_CMD_OPTS("FILE...")
BAREBOX_CMD_GROUP(CMD_GRP_FILE)
BAREBOX_CMD_HELP(cmd_cat_help)
BAREBOX_CMD_END
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