2007-07-05 16:02:19 +00:00
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/*
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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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*/
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2007-10-19 12:56:45 +00:00
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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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2007-07-05 16:02:14 +00:00
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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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2007-07-14 12:44:29 +00:00
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#include <fcntl.h>
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2007-07-05 16:02:14 +00:00
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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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2007-11-16 15:23:32 +00:00
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#define BUFSIZE 1024
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2007-10-19 12:56:45 +00:00
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/**
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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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2011-12-21 13:18:57 +00:00
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static int do_cat(int argc, char *argv[])
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2007-07-05 16:02:14 +00:00
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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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2007-11-16 15:23:32 +00:00
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buf = xmalloc(BUFSIZE);
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2007-07-05 16:02:14 +00:00
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while (args < argc) {
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2007-07-14 12:44:29 +00:00
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fd = open(argv[args], O_RDONLY);
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2007-07-05 16:02:14 +00:00
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if (fd < 0) {
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2009-10-19 05:54:33 +00:00
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err = 1;
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2007-07-05 16:02:14 +00:00
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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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2007-11-16 15:23:32 +00:00
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while((ret = read(fd, buf, BUFSIZE)) > 0) {
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2007-07-05 16:02:14 +00:00
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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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2007-09-21 07:09:06 +00:00
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putchar(buf[i]);
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2007-07-05 16:02:14 +00:00
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else
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2007-09-21 07:09:06 +00:00
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putchar('.');
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2007-07-05 16:02:14 +00:00
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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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2010-07-12 17:18:56 +00:00
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BAREBOX_CMD_HELP_START(cat)
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commands: harmonize in-barebox documentation
This patch does probably too much, but it's hard (and very
cumbersome/time consuming) to break it out. What is does is this:
* each command has one short description, e.g. "list MUX configuration"
* made sure the short descriptions start lowercase
* each command has one usage. That string contains just the
options, e.g. "[-npn]". It's not part of the long help text.
* that is, it doesn't say "[OPTIONS]" anymore, every usable option
is listed by character in this (short) option string (the long
description is in the long help text, as before)
* help texts have been reworked, to make them
- sometimes smaller
- sometimes describe the options better
- more often present themselves in a nicer format
* all long help texts are now created with BUSYBOX_CMD_HELP_
macros, no more 'static const __maybe_unused char cmd_foobar_help[]'
* made sure the long help texts starts uppercase
* because cmdtp->name and cmdtp->opts together provide the new usage,
all "Usage: foobar" texts have been removed from the long help texts
* BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this
is nicer in the source code
* BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself
* made sure no line gets longer than 77 characters
* delibertely renamed cmdtp->usage, so that we can get compile-time
errors (e.g. in out-of-tree modules that use register_command()
* the 'help' command can now always emit the usage, even without
compiled long help texts
* 'help -v' gives a list of commands with their short description, this
is similar like the old "help" command before my patchset
* 'help -a' gives out help of all commands
Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2014-05-13 08:28:42 +00:00
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BAREBOX_CMD_HELP_TEXT("Currently only printable characters and NL, TAB are printed.")
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2010-07-12 17:18:56 +00:00
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BAREBOX_CMD_HELP_END
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2007-07-05 16:02:14 +00:00
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2009-12-15 08:11:09 +00:00
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BAREBOX_CMD_START(cat)
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2007-07-05 16:02:14 +00:00
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.cmd = do_cat,
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commands: harmonize in-barebox documentation
This patch does probably too much, but it's hard (and very
cumbersome/time consuming) to break it out. What is does is this:
* each command has one short description, e.g. "list MUX configuration"
* made sure the short descriptions start lowercase
* each command has one usage. That string contains just the
options, e.g. "[-npn]". It's not part of the long help text.
* that is, it doesn't say "[OPTIONS]" anymore, every usable option
is listed by character in this (short) option string (the long
description is in the long help text, as before)
* help texts have been reworked, to make them
- sometimes smaller
- sometimes describe the options better
- more often present themselves in a nicer format
* all long help texts are now created with BUSYBOX_CMD_HELP_
macros, no more 'static const __maybe_unused char cmd_foobar_help[]'
* made sure the long help texts starts uppercase
* because cmdtp->name and cmdtp->opts together provide the new usage,
all "Usage: foobar" texts have been removed from the long help texts
* BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this
is nicer in the source code
* BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself
* made sure no line gets longer than 77 characters
* delibertely renamed cmdtp->usage, so that we can get compile-time
errors (e.g. in out-of-tree modules that use register_command()
* the 'help' command can now always emit the usage, even without
compiled long help texts
* 'help -v' gives a list of commands with their short description, this
is similar like the old "help" command before my patchset
* 'help -a' gives out help of all commands
Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2014-05-13 08:28:42 +00:00
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BAREBOX_CMD_DESC("concatenate file(s) to stdout")
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BAREBOX_CMD_OPTS("FILE...")
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commands: group 'help' output
The old output of "help" was just producing a long list, that usually
scrolled of the screen (even on a X11 terminal). This list is more
compact, and also sorted by groups.
The old output format (plus grouping) is now available with 'help -v'.
Example:
Information commands:
?, devinfo, help, iomem, meminfo, version
Boot commands:
boot, bootm, go, loadb, loads, loadx, loady, saves, uimage
...
Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2014-05-13 14:14:05 +00:00
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BAREBOX_CMD_GROUP(CMD_GRP_FILE)
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2009-12-15 08:11:09 +00:00
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BAREBOX_CMD_HELP(cmd_cat_help)
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BAREBOX_CMD_END
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