2007-11-09 21:09:25 +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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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <environment.h>
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2011-12-21 13:18:57 +00:00
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static int do_printenv(int argc, char *argv[])
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2007-11-09 21:09:25 +00:00
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{
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2012-10-14 11:39:10 +00:00
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struct variable_d *v;
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struct env_context *c;
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2007-11-09 21:09:25 +00:00
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if (argc == 2) {
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const char *val = getenv(argv[1]);
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if (val) {
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printf("%s=%s\n", argv[1], val);
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return 0;
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}
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printf("## Error: \"%s\" not defined\n", argv[1]);
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2009-10-19 14:16:46 +00:00
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return 1;
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2007-11-09 21:09:25 +00:00
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}
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2012-10-14 11:39:10 +00:00
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c = get_current_context();
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2007-11-09 21:09:25 +00:00
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printf("locals:\n");
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2012-10-14 11:39:10 +00:00
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list_for_each_entry(v, &c->local, list)
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printf("%s=%s\n", var_name(v), var_val(v));
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2007-11-09 21:09:25 +00:00
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printf("globals:\n");
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c = get_current_context();
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2012-10-14 11:39:10 +00:00
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while (c) {
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list_for_each_entry(v, &c->global, list)
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printf("%s=%s\n", var_name(v), var_val(v));
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2007-11-09 21:09:25 +00:00
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c = c->parent;
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}
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return 0;
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}
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2010-11-01 16:32:34 +00:00
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BAREBOX_CMD_HELP_START(printenv)
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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("If an argument is given, printenv prints the content of an environment")
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BAREBOX_CMD_HELP_TEXT("variable to the terminal. If no argument is specified, all variables are")
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BAREBOX_CMD_HELP_TEXT("printed.")
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2010-11-01 16:32:34 +00:00
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BAREBOX_CMD_HELP_END
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2008-04-04 09:46:55 +00:00
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2009-12-15 08:11:09 +00:00
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BAREBOX_CMD_START(printenv)
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2007-11-09 21:09:25 +00:00
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.cmd = do_printenv,
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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("print value of environment variables")
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BAREBOX_CMD_OPTS("[VARIABLE]")
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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_ENV)
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2009-12-15 08:11:09 +00:00
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BAREBOX_CMD_HELP(cmd_printenv_help)
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BAREBOX_CMD_END
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