2014-02-13 18:32:30 +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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2014-07-30 08:43:51 +00:00
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#include <libfile.h>
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2014-02-13 18:32:30 +00:00
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#include <malloc.h>
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#include <linux/stat.h>
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#include <linux/ctype.h>
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#include <environment.h>
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static int do_readf(int argc, char *argv[])
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{
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unsigned char *buf = NULL, *val;
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char *variable, *filename;
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struct stat s;
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size_t size;
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int ret, i;
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if (argc != 3)
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return COMMAND_ERROR_USAGE;
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filename = argv[1];
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variable = argv[2];
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ret = stat(filename, &s);
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if (ret)
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goto out;
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if (s.st_size > 1024) {
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ret = -EFBIG;
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goto out;
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}
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buf = read_file(filename, &size);
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if (!buf)
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goto out;
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for (i = 0; i < size; i++) {
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if (!isprint(buf[i])) {
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buf[i] = '\0';
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break;
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}
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}
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val = strim(buf);
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ret = setenv(variable, val);
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out:
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free(buf);
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return ret;
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}
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BAREBOX_CMD_HELP_START(readf)
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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("Read a single line from FILE into a VARiable. Leading and trailing")
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BAREBOX_CMD_HELP_TEXT("whitespaces are removed, nonvisible characters are stripped. Input is")
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BAREBOX_CMD_HELP_TEXT("limited to 1024 characters.")
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2014-02-13 18:32:30 +00:00
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(readf)
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.cmd = do_readf,
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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("read file into variable")
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BAREBOX_CMD_OPTS("FILE VAR")
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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_SCRIPT)
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2014-02-13 18:32:30 +00:00
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BAREBOX_CMD_HELP(cmd_readf_help)
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BAREBOX_CMD_END
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