100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file
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* @brief Concatenate files to stdout command
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*/
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#include <common.h>
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#include <command.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <linux/ctype.h>
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#include <errno.h>
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#include <xfuncs.h>
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#include <malloc.h>
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#define BUFSIZE 1024
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/**
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* @param[in] cmdtp FIXME
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* @param[in] argc Argument count from command line
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* @param[in] argv List of input arguments
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*/
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static int do_cat(struct command *cmdtp, int argc, char *argv[])
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{
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int ret;
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int fd, i;
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char *buf;
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int err = 0;
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int args = 1;
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if (argc < 2) {
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perror("cat");
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return 1;
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}
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buf = xmalloc(BUFSIZE);
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while (args < argc) {
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fd = open(argv[args], O_RDONLY);
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if (fd < 0) {
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err = 1;
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printf("could not open %s: %s\n", argv[args], errno_str());
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goto out;
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}
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while((ret = read(fd, buf, BUFSIZE)) > 0) {
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for(i = 0; i < ret; i++) {
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if (isprint(buf[i]) || buf[i] == '\n' || buf[i] == '\t')
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putchar(buf[i]);
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else
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putchar('.');
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}
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if(ctrlc()) {
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err = 1;
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close(fd);
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goto out;
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}
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}
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close(fd);
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args++;
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}
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out:
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free(buf);
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return err;
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}
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BAREBOX_CMD_HELP_START(cat)
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BAREBOX_CMD_HELP_USAGE("cat [FILES]\n")
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BAREBOX_CMD_HELP_SHORT("Concatenate files on stdout.\n")
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BAREBOX_CMD_HELP_TEXT ("Currently only printable characters and \\ n and \\ t are printed,\n")
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BAREBOX_CMD_HELP_TEXT ("but this should be optional.\n")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(cat)
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.cmd = do_cat,
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.usage = "concatenate file(s)",
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BAREBOX_CMD_HELP(cmd_cat_help)
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BAREBOX_CMD_END
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