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https://github.com/moparisthebest/pacman
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9efd10cd2a
vim recognises what type of shell script it's dealing with by looking at the shebang. If detection fails it falls back to sh which doesn't support some bash features. Adding a normal, possibly broken, shebang which gets fixed by the Makefile allows vim to detect bash syntax. Signed-off-by: Florian Pritz <bluewind@xinu.at> Signed-off-by: Dan McGee <dan@archlinux.org>
154 lines
3.8 KiB
Bash
154 lines
3.8 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 nounset
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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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myver='@PACKAGE_VERSION@'
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QUIET=0
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# ensure we have a sane umask set
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umask 0022
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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 [-q] <package1> <package2>\n")"
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printf "$(gettext "\
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pkgdelta will create a delta file between two packages.\n\
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This delta file can then be added to a database using repo-add.\n\n")"
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echo "$(gettext "Example: pkgdelta pacman-3.0.0.pkg.tar.gz pacman-3.0.1.pkg.tar.gz")"
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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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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 -xOf "$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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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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else
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msg "$(gettext "Generated delta : '%s'")" "$deltafile"
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(( QUIET )) && echo "$deltafile"
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fi
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return 0
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}
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case "$1" in
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-q|--quiet) QUIET=1; shift ;;
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esac
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if (( $# != 2 )); then
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usage
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exit 0
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fi
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if [[ ! -f $1 ]]; then
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error "$(gettext "File '%s' does not exist")" "$1"
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exit 0
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fi
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if [[ ! -f $2 ]]; then
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error "$(gettext "File '%s' does not exist")" "$2"
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exit 0
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fi
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if ! type xdelta3 &>/dev/null; then
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error "$(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 "$1" "$2"
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# vim: set ts=2 sw=2 noet:
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