mirror of
https://github.com/moparisthebest/pacman
synced 2024-11-10 11:35:00 -05:00
9fa18d9a4b
This should obsolete the delta support in makepkg. Having a separate script should be more flexible. Example usage: $ pkgdelta repo/tzdata-2009a-1-x86_64.pkg.tar.gz repo/tzdata-2009b-1-x86_64.pkg.tar.gz ==> Generating delta from version 2009a-1 to version 2009b-1 ==> Generated delta : 'repo/tzdata-2009a-1_to_2009b-1-x86_64.delta' Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
166 lines
4.0 KiB
Bash
166 lines
4.0 KiB
Bash
#!/bin/bash
|
|
#
|
|
# pkgdelta - create delta files for use with pacman and repo-add
|
|
# @configure_input@
|
|
#
|
|
# Copyright (c) 2009 Xavier Chantry <shiningxc@gmail.com>
|
|
#
|
|
# 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/>.
|
|
#
|
|
|
|
# bash options
|
|
set -o nounset
|
|
set -o errexit
|
|
|
|
# gettext initialization
|
|
export TEXTDOMAIN='pacman'
|
|
export TEXTDOMAINDIR='@localedir@'
|
|
|
|
myver='@PACKAGE_VERSION@'
|
|
|
|
QUIET=0
|
|
|
|
# ensure we have a sane umask set
|
|
umask 0022
|
|
|
|
msg() {
|
|
[ $QUIET -ne 0 ] && return
|
|
local mesg=$1; shift
|
|
printf "==> ${mesg}\n" "$@" >&1
|
|
}
|
|
|
|
warning() {
|
|
local mesg=$1; shift
|
|
printf "==> $(gettext "WARNING:") ${mesg}\n" "$@" >&2
|
|
}
|
|
|
|
error() {
|
|
local mesg=$1; shift
|
|
printf "==> $(gettext "ERROR:") ${mesg}\n" "$@" >&2
|
|
}
|
|
|
|
# print usage instructions
|
|
usage() {
|
|
printf "pkgdelta (pacman) %s\n\n" "$myver"
|
|
printf "$(gettext "Usage: pkgdelta [-q] <package1> <package2>\n")"
|
|
printf "$(gettext "\
|
|
pkgdelta will create a delta file between two packages\n\
|
|
This delta file can then be added to a database using repo-add.\n\n")"
|
|
echo "$(gettext "Example: pkgdelta pacman-3.0.0.pkg.tar.gz pacman-3.0.1.pkg.tar.gz")"
|
|
}
|
|
|
|
version() {
|
|
printf "pkgdelta (pacman) %s\n\n" "$myver"
|
|
printf "$(gettext "\
|
|
Copyright (c) 2009 Xavier Chantry <shiningxc@gmail.com>.\n\n\
|
|
This is free software; see the source for copying conditions.\n\
|
|
There is NO WARRANTY, to the extent permitted by law.\n")"
|
|
}
|
|
|
|
read_pkginfo()
|
|
{
|
|
pkgname= pkgver= arch=
|
|
local OLDIFS=$IFS
|
|
# IFS (field separator) is only the newline character
|
|
IFS="
|
|
"
|
|
local line var val
|
|
for line in $(bsdtar -xOf "$1" .PKGINFO 2>/dev/null |
|
|
grep -v "^#" | sed 's|\(\w*\)\s*=\s*\(.*\)|\1="\2"|'); do
|
|
eval "$line"
|
|
if [ -n "$pkgname" -a -n "$pkgver" -a -n "$arch" ]; then
|
|
IFS=$OLDIFS
|
|
return 0
|
|
fi
|
|
done
|
|
IFS=$OLDIFS
|
|
error "$(gettext "Invalid package '%s'")" "$1"
|
|
return 1
|
|
}
|
|
|
|
# $oldfile $oldmd5 $newfile $newmd5 $deltafile $deltamd5 $deltasize
|
|
create_xdelta()
|
|
{
|
|
local oldfile=$1
|
|
local newfile=$2
|
|
local \
|
|
oldname oldver oldarch \
|
|
newname newver newarch \
|
|
deltafile
|
|
|
|
read_pkginfo "$oldfile" || return 1
|
|
oldname="$pkgname"
|
|
oldver="$pkgver"
|
|
oldarch="$arch"
|
|
read_pkginfo "$newfile" || return 1
|
|
newname="$pkgname"
|
|
newver="$pkgver"
|
|
newarch="$arch"
|
|
|
|
if [ "$oldname" != "$newname" ]; then
|
|
error "$(gettext "The package names don't match : '%s' and '%s'")" "$oldname" "$newname"
|
|
return 1
|
|
fi
|
|
|
|
if [ "$oldarch" != "$newarch" ]; then
|
|
error "$(gettext "The package architectures don't match : '%s' and '%s'")" "$oldarch" "$newarch"
|
|
return 1
|
|
fi
|
|
|
|
if [ "$oldver" == "$newver" ]; then
|
|
error "$(gettext "Both packages have the same version : '%s'")" "$newver"
|
|
return 1
|
|
fi
|
|
|
|
msg "$(gettext "Generating delta from version %s to version %s")" "$oldver" "$newver"
|
|
deltafile="$(dirname $newfile)/$pkgname-${oldver}_to_${newver}-$arch.delta"
|
|
local ret=0
|
|
|
|
xdelta3 -q -f -s "$oldfile" "$newfile" "$deltafile" || ret=$?
|
|
if [ $ret -ne 0 ]; then
|
|
error "$(gettext "Delta could not be created.")"
|
|
return 1
|
|
else
|
|
msg "$(gettext "Generated delta : '%s'")" "$deltafile"
|
|
[ $QUIET -eq 1 ] && echo "$deltafile"
|
|
fi
|
|
return 0
|
|
}
|
|
|
|
case "$1" in
|
|
-q|--quiet) QUIET=1; shift ;;
|
|
esac
|
|
|
|
if [ $# -ne 2 ]; then
|
|
usage
|
|
exit 0
|
|
fi
|
|
|
|
if [ ! -f "$1" ]; then
|
|
error "$(gettext "File '%s' does not exist")" "$1"
|
|
exit 0
|
|
fi
|
|
|
|
if [ ! -f "$2" ]; then
|
|
error "$(gettext "File '%s' does not exist")" "$2"
|
|
exit 0
|
|
fi
|
|
|
|
if [ ! "$(type -p xdelta3)" ]; then
|
|
error "$(gettext "Cannot find the xdelta3 binary! Is xdelta3 installed?")"
|
|
exit 1
|
|
fi
|
|
|
|
create_xdelta "$1" "$2"
|