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#!/usr/bin/env bash
# This may be included with or without `set -euE`
# When run directly, it does `set -euE`
# Copyright (c) 2013 by Luke Shumaker <lukeshu@sbcglobal.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# make sure XDG_CACHE_HOME is set
. $(librelib conf)
# Usage: blacklist-normalize <$file
# Normalizes the syntax of the blacklist on stdin.
blacklist-normalize() {
sed -e 's/^[^:]*$/&::/' -e 's/^[^:]*:[^:]*$/&:/'
}
# Usage: blacklist-cat
# Prints the blacklist.
# Uses the cache, but downloads it if it doesn't exist. Also normalizes the blacklist for easier parsing.
blacklist-cat() {
local file="$XDG_CACHE_HOME/libretools/blacklist.txt"
if ! [[ -e $file ]]; then
# exit on failure, whether set -e or not
blacklist-update || return $?
fi
blacklist-normalize < "$file"
}
# Usage: blacklist-update
# Updates (or creates) the cached copy of the blacklist.
blacklist-update() (
. libremessages
load_files libretools || return 1
check_vars libretools BLACKLIST || return 1
local remote_blacklist="$BLACKLIST"
local local_blacklist="$XDG_CACHE_HOME/libretools/blacklist.txt"
stat_busy "Downloading blacklist of proprietary software packages"
mkdir -p "${local_blacklist%/*}"
if wget -N -q -O "${local_blacklist}.part" "$remote_blacklist" 2>/dev/null; then
stat_done
mv -f "${local_blacklist}.part" "$local_blacklist"
else
stat_done
rm "${local_blacklist}.part"
if [[ -e "$local_blacklist" ]]; then
warning "Using local copy of blacklist"
else
error "Download failed, exiting"
return 1
fi
fi
)
# Usage: blacklist-cat | blacklist-lookup $pkgname
# Filters to obtain the line for $pkgname from the blacklist on stdin.
# Exits successfully whether a line is found or not.
blacklist-lookup() {
local pkg=$1
# we accept that $pkg contains no regex-nes
blacklist-normalize | grep "^$pkg:" || true
}
# Usage: blacklist-cat | blacklist-get-pkg
# Prints only the package name field of the blacklist line(s) on stdin.
blacklist-get-pkg() {
blacklist-normalize | cut -d: -f1
}
# Usage: blacklist-cat | blacklist-get-rep
# Prints only the replacement package field of the blacklist line(s) on stdin.
blacklist-get-rep() {
blacklist-normalize | cut -d: -f2
}
# Usage: blacklist-cat | blacklist-get-reason
# Prints only the reason field of the blacklist line(s) on stdin.
blacklist-get-reason() {
blacklist-normalize | cut -d: -f3-
}
if [[ "${0##*/}" == libreblacklist ]]; then
set -euE
usage-outside() {
sed -n '/^# Usage:/,/()/p' "$0" |
tr '\n' '\r' | sed 's/\s*()\s*[{(]/\n/g'
}
# The output format of this is:
# - The first line is "Usage:"
# - The second line is a brief description
# - The last line is the command name (prefixed with "blacklist-")
# - The in-between lines are the extended description.
usage-inside() {
sed 's/\r/\n/g'<<<"$1"|sed -e '/^$/d' -e 's/^# //'
}
usage() {
. $(librelib messages)
if [[ $# -eq 0 ]]; then
print "Usage: %s [-h] COMMAND [ARGUMENTS]" "${0##*/}"
print "Tool for working with the nonfree software blacklist"
echo
print "Commands:"
usage-outside | while read -r sec; do sec="$(usage-inside "$sec")"
cmd=$(<<<"$sec" sed -n '$s/^blacklist-//p')
desc="$(_ "$(sed -n 2p <<<"$sec")")"
flag "$cmd" "${desc//blacklist-/${0##*/} }"
done
else
usage-outside | while read -r sec; do sec="$(usage-inside "$sec")"
cmd=$(<<<"$sec" sed -n '$s/^blacklist-//p')
if [[ "$cmd" == "$1" ]]; then
<<<"$sec" sed '$d' |
while read -r line; do print "$line"; done |
sed "s/blacklist-/${0##*/} /g" |
fmt -us
return 0
fi
done
fi
}
if [[ $# -eq 0 ]]; then
usage >/dev/stderr
exit 1
fi
_blacklist_cmd=$1
shift
if [[ $_blacklist_cmd == -h ]]; then
usage "$@"
else
"blacklist-$_blacklist_cmd" "$@"
fi
fi
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