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#!/bin/bash
# Copyright (c) 2014 Daniel Beyer <dabe@deb.ymc.ch>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
set -f
set -e
if [ -z "$(which grep-dctrl)" ]; then
echo "E: Command 'grep-dctrl' from package 'dctrl-tools' missing" 1>&2
exit 1
fi
file=$1
if [ -z "$file" ] ||
[ $# -ne 1 ]; then
echo "Usage: $0 RELATIVE_PATH_TO_FILE" 1>&2
exit 1
fi
file="./$(echo $file | sed -r 's|^[./]+||')"
if [ ! -f "$file" ]; then
echo "E: No such file: $file" 1>&2
exit 1
fi
if [ ! -f "debian/copyright" ]; then
echo "E: Please run this from the package's root directory" 1>&2
exit 1
fi
license=""
for path_pattern in $(grep-dctrl -n -F License -s Files '' debian/copyright | sed -r 's/^[[:space:]]+//' | grep -v -E -e '^\*$') '*'
do
if [ "$(find ./ -path "./$path_pattern" -path "$file" -type f)" == "$file" ]; then
eregex_cmpat_pattern="$(echo $path_pattern | sed -r 's/([*?\])/\\\1/g')"
license=$(grep-dctrl -n -s License -F Files --eregex "(^$eregex_cmpat_pattern\$|[[:space:]]$eregex_cmpat_pattern|$eregex_cmpat_pattern[[:space:]])" debian/copyright)
break
fi
done
if [ -z "$license" ]; then
echo "E: Failed to get a license for '$file' from 'debian/copyright'" 1>&2
exit 1
fi
echo $license
exit 0
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