Attachment 5094 Details for Bug 26122 – shell-cmdline (v1)

shell-cmdline (v1)

shell-cmdline (text/plain), 1.57 KB, created by Alexey Gladkov on 2011-09-05 01:48:26 MSK

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Creator: Alexey Gladkov

Created: 2011-09-05 01:48:26 MSK

Size: 1.57 KB

patch

obsolete

>#!/bin/sh -efu
># This file is covered by the GNU General Public License,
># which should be included with libshell as the file LICENSE.
># All copyright information are listed in the COPYING.
>
>if [ -z "${__included_shell_cmdline-}" ]; then
>__included_shell_cmdline=1
>
>. shell-string
>
># Run handler for each variable in /proc/cmdline.
>#
>cmdline_foreach() {
>	local l="$1" h="$2"
>	local c= m=
>
>	__is_set() {
>		[ $(( $1 & $2 )) -eq $2 ]
>	}
>
>	fill_mask m "$l"
>
>	local state=$((0x00))
>	local VALUE=$((0x02))
>	local EQUAL=$((0x04))
>	local QUOTE=$((0x10))
>
>	local n= v=
>
>	while [ -n "$l" ]; do
>		c="${l%$m}"
>
>		case "$c" in
>			'"')
>				__is_set $state $QUOTE &&
>					state=$(($state ^ $QUOTE)) ||
>					state=$(($state | $QUOTE))
>				;;
>			' ')
>				if __is_set $state $QUOTE; then
>					v="$v$c"
>				else
>					__is_set $state $EQUAL ||
>						v=1
>					$h "$n" "$v" ||
>						break
>					n= v=
>					state=$((0x00))
>				fi
>				;;
>			'=')
>				! __is_set $state $VALUE ||
>					v="$v$c"
>				state=$(($state | $VALUE | $EQUAL))
>				;;
>			*)
>				if ! __is_set $state $VALUE; then
>					[ "$c" != '-' ] || c='_'
>					n="$n$c"
>				else
>					v="$v$c"
>				fi
>				;;
>		esac
>
>		l="${l#?}"
>		m="${m#?}"
>	done
>	unset __is_set
>}
>
># Find spicified variable in /proc/cmdline and store result into variable.
>#
># Usage example:
># read cmdline < /proc/cmdline
># cmdline_get "$cmdline" 'initrd_value' 'initrd'
># echo "$initrd_value"
>cmdline_get() {
>	local s="$1" retv="$2" getn="$3"
>	__getval() {
>		if [ "$1" = "$getn" ]; then
>			eval "$retv=\"$2\""
>			return 1
>		fi
>	}
>	cmdline_foreach "$s" __getval
>	unset __getval
>}
>
>fi #__included_shell_cmdline

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Attachments on bug 26122: 5094