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pacman/scripts/pkgdelta.sh.in
Dan McGee a4a7006a13 po/: split into scripts/po/ and src/pacman/po/
This is the first step at separating the pacman message catalog and the
scripts message catalog. Makefiles, configure.ac, and other such files
are adjusted accordingly, as well as renaming files. The TEXTDOMAIN of
scripts is also adjusted.

Note that no actual pot or po files get changed here; these will get
pruned in a future commit so each catalog contains only the necessary
messages.

Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-23 22:50:01 -05:00

154 lines
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#!@BASH_SHELL@
#
# 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-scripts'
export TEXTDOMAINDIR='@localedir@'
myver='@PACKAGE_VERSION@'
QUIET=0
# ensure we have a sane umask set
umask 0022
m4_include(library/output_format.sh)
# 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 && -n $pkgver && -n $arch ]]; then
IFS=$OLDIFS
return 0
fi
done
IFS=$OLDIFS
error "$(gettext "Invalid package file '%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=$?
if (( ret )); then
error "$(gettext "Delta could not be created.")"
return 1
else
msg "$(gettext "Generated delta : '%s'")" "$deltafile"
(( QUIET )) && echo "$deltafile"
fi
return 0
}
case "$1" in
-q|--quiet) QUIET=1; shift ;;
esac
if (( $# != 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")" "$2"
exit 0
fi
if ! type xdelta3 &>/dev/null; then
error "$(gettext "Cannot find the xdelta3 binary! Is xdelta3 installed?")"
exit 1
fi
create_xdelta "$1" "$2"
# vim: set ts=2 sw=2 noet: