mirror of
https://github.com/moparisthebest/pacman
synced 2024-12-22 15:58:50 -05:00
37de9df7c0
Somewhere in the arg parse refactoring, the args array went away and we simply stashed our remaining parameters as positionals. Fix this up so that pkgdelta doesn't mysteriously hang in read_pkginfo(). Signed-off-by: Dave Reisner <dreisner@archlinux.org>
221 lines
5.4 KiB
Bash
221 lines
5.4 KiB
Bash
#!/bin/bash
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#
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# pkgdelta - create delta files for use with pacman and repo-add
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# @configure_input@
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#
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# Copyright (c) 2009 Xavier Chantry <shiningxc@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# bash options
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set -o errexit
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# gettext initialization
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export TEXTDOMAIN='pacman-scripts'
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export TEXTDOMAINDIR='@localedir@'
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declare -r myver='@PACKAGE_VERSION@'
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QUIET=0
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# minimal of package before deltas are generated (bytes)
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min_pkg_size=$((1024*1024))
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# percent of new package above which the delta will be discarded
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max_delta_size=70
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# ensure we have a sane umask set
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umask 0022
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m4_include(library/parseopts.sh)
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m4_include(library/output_format.sh)
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# print usage instructions
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usage() {
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printf "pkgdelta (pacman) %s\n\n" "$myver"
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printf -- "$(gettext "Usage: pkgdelta [options] <package1> <package2>\n")"
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printf -- "$(gettext "\
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pkgdelta will create a delta file between two packages.\n\
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This delta file can then be added to a database using repo-add.\n\n")"
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printf -- "$(gettext "Example: pkgdelta pacman-3.0.0.pkg.tar.gz pacman-3.0.1.pkg.tar.gz")\n"
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echo
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printf -- "$(gettext "Options:\n")"
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printf -- "$(gettext " -q, --quiet minimize output\n")"
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printf -- "$(gettext " --min-pkg-size minimum package size before deltas are generated\n")"
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printf -- "$(gettext " --max-delta-size percent of new package above which the delta will be discarded\n")"
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}
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version() {
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printf "pkgdelta (pacman) %s\n\n" "$myver"
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printf -- "$(gettext "\
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Copyright (c) 2009 Xavier Chantry <shiningxc@gmail.com>.\n\n\
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This is free software; see the source for copying conditions.\n\
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There is NO WARRANTY, to the extent permitted by law.\n")"
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}
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m4_include(library/human_to_size.sh)
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isnumeric() {
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[[ $1 != *[!0-9]* ]]
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}
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read_pkginfo()
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{
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pkgname= pkgver= arch=
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local OLDIFS=$IFS
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# IFS (field separator) is only the newline character
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IFS="
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"
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local line var val
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for line in $(bsdtar -xOqf "$1" .PKGINFO 2>/dev/null |
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grep -v "^#" | sed 's|\(\w*\)\s*=\s*\(.*\)|\1="\2"|'); do
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eval "$line"
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if [[ -n $pkgname && -n $pkgver && -n $arch ]]; then
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IFS=$OLDIFS
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return 0
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fi
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done
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IFS=$OLDIFS
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error "$(gettext "Invalid package file '%s'.")" "$1"
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return 1
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}
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# $oldfile $oldmd5 $newfile $newmd5 $deltafile $deltamd5 $deltasize
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create_xdelta()
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{
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local oldfile=$1
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local newfile=$2
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local \
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oldname oldver oldarch \
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newname newver newarch \
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deltafile
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read_pkginfo "$oldfile" || return 1
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oldname="$pkgname"
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oldver="$pkgver"
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oldarch="$arch"
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read_pkginfo "$newfile" || return 1
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newname="$pkgname"
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newver="$pkgver"
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newarch="$arch"
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pkgsize="$(@SIZECMD@ -L "$newfile")"
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if ((pkgsize < min_pkg_size)); then
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msg "$(gettext "Skipping delta creation for small package: %s - size %s")" "$newname" "$pkgsize"
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return 0
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fi
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if [[ $oldname != "$newname" ]]; then
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error "$(gettext "The package names don't match : '%s' and '%s'")" "$oldname" "$newname"
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return 1
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fi
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if [[ $oldarch != "$newarch" ]]; then
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error "$(gettext "The package architectures don't match : '%s' and '%s'")" "$oldarch" "$newarch"
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return 1
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fi
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if [[ $oldver == "$newver" ]]; then
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error "$(gettext "Both packages have the same version : '%s'")" "$newver"
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return 1
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fi
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msg "$(gettext "Generating delta from version %s to version %s")" "$oldver" "$newver"
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deltafile=$(dirname "$newfile")/$pkgname-${oldver}_to_${newver}-$arch.delta
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local ret=0
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xdelta3 -q -f -s "$oldfile" "$newfile" "$deltafile" || ret=$?
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if (( ret )); then
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error "$(gettext "Delta could not be created.")"
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return 1
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fi
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deltasize="$(@SIZECMD@ -L "$deltafile")"
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if ((max_delta_size * pkgsize / 100 < deltasize)); then
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msg "$(gettext "Delta package larger than maximum size. Removing.")"
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rm -f "$deltafile"
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return 0
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fi
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msg "$(gettext "Generated delta : '%s'")" "$deltafile"
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(( QUIET )) && echo "$deltafile"
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return 0
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}
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OPT_SHORT='hqV'
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OPT_LONG=('help' 'quiet' 'max-delta-size:' 'min-pkg-size:' 'version')
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if ! parseopts "$OPT_SHORT" "${OPT_LONG[@]}" -- "$@"; then
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exit 1
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fi
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set -- "${OPTRET[@]}"
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unset OPT_SHORT OPT_LONG OPTRET
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# parse arguments
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while :; do
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case $1 in
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-h|--help)
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usage
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exit 0 ;;
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-V|--version)
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version
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exit 0 ;;
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-q|--quiet)
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QUIET=1;;
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--min-pkg-size)
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if ! min_pkg_size=$(human_to_size "$2"); then
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echo "invalid argument '$2' for option -- '$1'"
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exit 1
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fi
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shift ;;
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--max-delta-size)
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arg=$(awk -v val="$2" 'BEGIN { print val * 100 }')
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if ! isnumeric "$arg" || (( arg > 200 )); then
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echo "invalid argument '$2' for option -- '$1'"
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exit 1
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fi
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max_delta_size=$arg
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shift ;;
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--)
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shift
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break 2 ;;
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esac
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shift
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done
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if (( $# != 2 )); then
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usage
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exit 1
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fi
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for i in "$@"; do
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if [[ ! -f $i ]]; then
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error "$(gettext "File '%s' does not exist")" "$i"
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exit 1
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fi
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done
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if ! type xdelta3 &>/dev/null; then
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error "$(gettext "Cannot find the xdelta3 binary! Is xdelta3 installed?")"
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exit 1
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fi
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create_xdelta "$@"
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# vim: set ts=2 sw=2 noet:
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