mirror of
https://github.com/moparisthebest/pacman
synced 2024-12-23 08:18:51 -05:00
cd2370754a
Forcing vim users to view files with a tabstop of 2 seems really unnecessary when noet is set. I find it much easier to read code with ts=4 and I dislike having to override the modeline by hand. Command run: find . -type f -exec sed -i '/vim.* noet/s# ts=2 sw=2##' {} + Signed-off-by: Florian Pritz <bluewind@xinu.at> Signed-off-by: Allan McRae <allan@archlinux.org>
227 lines
5.6 KiB
Bash
227 lines
5.6 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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USE_COLOR='y'
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# minimal of package before deltas are generated (bytes)
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min_pkg_size=$((1024*1024))
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# percent of new package above which the delta will be discarded
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max_delta_size=70
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# ensure we have a sane umask set
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umask 0022
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m4_include(library/parseopts.sh)
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m4_include(library/output_format.sh)
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# print usage instructions
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usage() {
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printf "pkgdelta (pacman) %s\n" "${myver}"
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echo
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printf -- "$(gettext "Usage: pkgdelta [options] <package1> <package2>\n")"
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echo
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printf -- "$(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")"
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echo
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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 " --nocolor remove color from 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" "$myver"
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printf -- "$(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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unset pkgver pkgname arch
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while IFS='=' read -r field value; do
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# skip comments and invalid lines
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[[ $field = '#'* || -z $value ]] && continue
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# skip lines which aren't fields we care about
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[[ $field != @(pkgver|pkgname|arch) ]] || continue
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declare -g "${field% }=${value# }"
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[[ $pkgname && $pkgver && $arch ]] && return 0
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done < <(bsdtar -xOqf "$1" .PKGINFO 2>/dev/null)
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error "$(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 "$deltafile"
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return 0
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}
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OPT_SHORT='hqV'
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OPT_LONG=('help' 'quiet' 'max-delta-size:' 'min-pkg-size:' 'nocolor' 'version')
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if ! parseopts "$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 $1 in
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-h|--help)
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usage
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exit 0 ;;
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-V|--version)
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version
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exit 0 ;;
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-q|--quiet)
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QUIET=1;;
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--nocolor)
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USE_COLOR='n';;
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--min-pkg-size)
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if ! min_pkg_size=$(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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m4_include(library/term_colors.sh)
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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 noet:
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