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#!/bin/bash
#
# source.sh - functions to extract information from source URLs
#
# Copyright (c) 2010-2020 Pacman Development Team <pacman-dev@archlinux.org>
#
# 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 2 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/>.
#
[[ -n "$LIBMAKEPKG_UTIL_SOURCE_SH" ]] && return
LIBMAKEPKG_UTIL_SOURCE_SH=1
LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
source "$LIBRARY/util/message.sh"
# a source entry can have two forms :
# 1) "filename::http://path/to/file"
# 2) "http://path/to/file"
# extract the URL from a source entry
get_url() {
# strip an eventual filename
printf "%s\n" "${1#*::}"
}
# extract the protocol from a source entry - return "local" for local sources
get_protocol() {
if [[ $1 = *://* ]]; then
# strip leading filename
local proto="${1#*::}"
proto="${proto%%://*}"
# strip proto+uri://
printf "%s\n" "${proto%%+*}"
elif [[ $1 = *lp:* ]]; then
local proto="${1#*::}"
printf "%s\n" "${proto%%+lp:*}"
else
printf "%s\n" local
fi
}
# extract the filename from a source entry
get_filename() {
local netfile=$1
# if a filename is specified, use it
if [[ $netfile = *::* ]]; then
printf "%s\n" ${netfile%%::*}
return
fi
local proto=$(get_protocol "$netfile")
case $proto in
bzr|git|hg|svn)
filename=${netfile%%#*}
filename=${filename%%\?*}
filename=${filename%/}
filename=${filename##*/}
if [[ $proto = bzr ]]; then
filename=${filename#*lp:}
fi
if [[ $proto = git ]]; then
filename=${filename%%.git*}
fi
;;
*)
# if it is just an URL, we only keep the last component
filename="${netfile##*/}"
;;
esac
printf "%s\n" "${filename}"
}
# Return the absolute filename of a source entry
get_filepath() {
local file="$(get_filename "$1")"
local proto="$(get_protocol "$1")"
case $proto in
bzr|git|hg|svn)
if [[ -d "$startdir/$file" ]]; then
file="$startdir/$file"
elif [[ -d "$SRCDEST/$file" ]]; then
file="$SRCDEST/$file"
else
return 1
fi
;;
*)
if [[ -f "$startdir/$file" ]]; then
file="$startdir/$file"
elif [[ -f "$SRCDEST/$file" ]]; then
file="$SRCDEST/$file"
else
return 1
fi
;;
esac
printf "%s\n" "$file"
}
# extract the VCS revision/branch specifier from a source entry
get_uri_fragment() {
local netfile=$1
local fragment=${netfile#*#}
if [[ $fragment = "$netfile" ]]; then
unset fragment
fi
fragment=${fragment%\?*}
printf "%s\n" "$fragment"
}
# extract the VCS "signed" status from a source entry
get_uri_query() {
local netfile=$1
local query=${netfile#*\?}
if [[ $query = "$netfile" ]]; then
unset query
fi
query=${query%#*}
printf "%s\n" "$query"
}
get_downloadclient() {
local proto=$1
# loop through DOWNLOAD_AGENTS variable looking for protocol
local i
for i in "${DLAGENTS[@]}"; do
local handler="${i%%::*}"
if [[ $proto = "$handler" ]]; then
local agent="${i#*::}"
break
fi
done
# if we didn't find an agent, return an error
if [[ -z $agent ]]; then
error "$(gettext "Unknown download protocol: %s")" "$proto"
plainerr "$(gettext "Aborting...")"
exit 1 # $E_CONFIG_ERROR
fi
# ensure specified program is installed
local program="${agent%% *}"
if [[ ! -x $program ]]; then
local baseprog="${program##*/}"
error "$(gettext "The download program %s is not installed.")" "$baseprog"
plainerr "$(gettext "Aborting...")"
exit 1 # $E_MISSING_PROGRAM
fi
printf "%s\n" "$agent"
}
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