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#!/bin/sh
# Copyright (c) 2011-2014, Intel Corporation
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation and/or
# other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# This script reads an asound.conf file and produce for each alsa mixeur
# it's differend values and pcm
#
# ouput example :
#
# my_alsa_mixeur
# true
# a_pcm
# an_other_pcm
# false
# in_this_pcm_my_alsa_mixer_takes_the_value_false
# ...
set -eu
if test $# = 0
then
file="-"
else
file="$1"
fi
space=" "
previous_command=""
sed -nr -e 's#^pcm.(.*)\{.*$#\1#; t save;
b next;
:save;h;b' \
\
-e ':next; s/.*name\s+"(.*)"\s+value\s+([^}]*).*/\1 = \2 # /; t pcm;
b;
:pcm; G;s/\n//p;' -- "$file" |
sort | \
while read line
do
current_command="$( echo "$line" | sed 's/ =.*#.*//' )"
#values are case insensitive
current_value="$( echo "$line" | sed 's/.*= \(.*\) #.*/\1/' | tr [:upper:] [:lower:] )"
current_mode="$( echo "$line" | sed 's/.*# //' )"
if test "$previous_command" != "$current_command"
then
echo "$current_command"
previous_command="$current_command"
previous_value=""
fi
if test "$previous_value" != "$current_value"
then
echo "$space$current_value"
previous_value="$current_value"
fi
echo "$space$space$current_mode"
done
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