f1f532084a
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>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* uncompress.c - uncompress a compressed file
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*
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* Copyright (c) 2010 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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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fs.h>
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#include <uncompress.h>
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static int do_uncompress(int argc, char *argv[])
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{
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int from, to, ret;
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if (argc != 3)
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return COMMAND_ERROR_USAGE;
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from = open(argv[1], O_RDONLY);
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if (from < 0) {
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perror("open");
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return 1;
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}
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to = open(argv[2], O_WRONLY | O_CREAT);
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if (to < 0) {
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perror("open");
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ret = 1;
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goto exit_close;
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}
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ret = uncompress_fd_to_fd(from, to, uncompress_err_stdout);
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if (ret)
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printf("failed to decompress\n");
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close(to);
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exit_close:
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close(from);
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return ret;
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}
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BAREBOX_CMD_START(uncompress)
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.cmd = do_uncompress,
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BAREBOX_CMD_DESC("uncompress a compressed file")
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BAREBOX_CMD_OPTS("INFILE OUTFILE")
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BAREBOX_CMD_GROUP(CMD_GRP_FILE)
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BAREBOX_CMD_END
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