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## Copyright 2015 Ian Jauslin
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
## You may obtain a copy of the License at
##
## http://www.apache.org/licenses/LICENSE-2.0
##
## Unless required by applicable law or agreed to in writing, software
## distributed under the License is distributed on an "AS IS" BASIS,
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
## See the License for the specific language governing permissions and
## limitations under the License.
################################################################################################
## ##
## Functions used to manipulate configuration files ##
## ##
################################################################################################
# remove unwanted entries in configuration files (read fromm stdin)
function strip_config {
tostrip="$1"
# whether to skip the entry
skip=0
# whether this is the first entry
first_entry=1
# read file
while read aline; do
# if line is a header
if [[ "$aline" =~ ^#! ]]; then
# check whether to strip
for header in $tostrip; do
if [[ "$aline" = "$header" ]]; then
skip=1
break
fi
done
# add a '&' separator
if [[ "$skip" = 0 && "$first_entry" = 0 ]]; then
echo "&"
fi
[[ "$skip" = 0 ]] && first_entry=0
fi
# change entry
if [[ "$aline" = "&" ]]; then
skip=0
# write out if not instructed to skip
elif [[ $skip = 0 ]]; then
echo "$aline"
fi
done
}
# find a config entry in a file (read from stdin)
function find_config_entry {
header="$1"
# whether the entry was found
foundit=0
# read stdin
while read aline; do
# write out if the header was found
if [[ $foundit = 1 ]]; then
if [[ "$aline" != "&" ]]; then
echo "$aline"
fi
fi
# check the header
if [[ "$aline" = "$header" ]]; then
foundit=1
fi
# new entry
if [[ "$aline" = "&" ]]; then
if [[ "$foundit" = 1 ]]; then
break
fi
fi
done
}
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