402 lines
11 KiB
Bash
Executable file
402 lines
11 KiB
Bash
Executable file
#!/bin/bash
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##
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## mergechanges -- merge Architecture: and Files: fields of a set of .changes
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## Copyright 2002 Gergely Nagy <algernon@debian.org>
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## Changes copyright 2002,2003 by Julian Gilbey <jdg@debian.org>
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##
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## $MadHouse: home/bin/mergechanges,v 1.1 2002/01/25 12:37:27 algernon Exp $
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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 <https://www.gnu.org/licenses/>.
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set -e
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PROGNAME=${0##*/}
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synopsis() {
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echo "Usage: $PROGNAME [-h|--help|--version] [-d] [-S|--source] [-i|--indep] [-f] <file1> <file2> [<file> ...]"
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}
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usage() {
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synopsis
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cat <<EOT
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Merge the changes files <file1>, <file2>, .... Output on stdout
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unless -f option given, in which case, output to
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<package>_<version>_multi.changes in the same directory as <file1>.
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If -i is given, only source and architecture-independent packages
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are included in the output.
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If -S is given, only the source package is included in the output.
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EOT
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}
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version() {
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echo \
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"This is $PROGNAME, from the Debian devscripts package, version ###VERSION###
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This code is copyright (C) 2002 Gergely Nagy <algernon@debian.org>
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Changes copyright 2002 by Julian Gilbey <jdg@debian.org>
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This program comes with ABSOLUTELY NO WARRANTY.
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You are free to redistribute this code under the terms of the
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GNU General Public License, version 2 or later."
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}
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# Commandline parsing
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FILE=0
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DELETE=0
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REMOVE_ARCHDEP=0
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REMOVE_INDEP=0
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while [ $# -gt 0 ]; 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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;;
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--version)
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version
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exit 0
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;;
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-f)
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FILE=1
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shift
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;;
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-d)
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DELETE=1
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shift
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;;
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-i|--indep)
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REMOVE_ARCHDEP=1
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shift
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;;
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-S|--source)
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REMOVE_ARCHDEP=1
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REMOVE_INDEP=1
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shift
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;;
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-*)
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echo "Unrecognised option $1. Use $PROGNAME --help for help" >&2
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exit 1
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;;
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*)
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break
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;;
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esac
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done
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# Sanity check #0: Do we have enough parameters?
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if [ $# -lt 2 ]; then
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echo "Not enough parameters." >&2
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synopsis >&2
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exit 1
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fi
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# Sanity check #1: Do the requested files exist?
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for f in "$@"; do
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if ! test -r $f; then
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echo "ERROR: Cannot read $f!" >&2
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exit 1
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fi
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done
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# Get a (possibly multi-line) field.
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get_field() {
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perl -e '
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use warnings;
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use strict;
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use autodie;
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use Dpkg::Control;
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my $field = shift;
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foreach my $file (@ARGV) {
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my $changes = Dpkg::Control->new(type => CTRL_FILE_CHANGES);
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$changes->load($file);
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next unless defined $changes->{$field};
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print $changes->{$field};
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print "\n";
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}
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' "$@"
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}
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# Extract the Architecture: field from all .changes files,
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# and merge them, sorting out duplicates. Skip architectures
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# other than all and source if desired.
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ARCHS=$(get_field Architecture "$@" | tr ' ' '\n' | sort -u)
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if test ${REMOVE_ARCHDEP} = 1; then
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ARCHS=$(echo "$ARCHS" | grep -E '^(all|source)$')
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fi
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if test ${REMOVE_INDEP} = 1; then
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ARCHS=$(echo "$ARCHS" | grep -vxF all)
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fi
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ARCHS=$(echo "$ARCHS" | tr '\n' ' ' | sed 's/ $//')
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checksum_uniq() {
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local line
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local IFS=
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if test ${REMOVE_ARCHDEP} = 1 -o ${REMOVE_INDEP} = 1; then
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while read line; do
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case "$line" in
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("")
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# empty first line
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echo "$line"
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;;
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(*.dsc|*.diff.gz|*.tar.*|*_source.buildinfo)
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# source
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echo "$line"
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;;
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(*_all.deb|*_all.udeb|*_all.buildinfo)
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# architecture-indep
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if test ${REMOVE_INDEP} = 0; then
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echo "$line"
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fi
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;;
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(*.deb|*.udeb|*.buildinfo)
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# architecture-specific
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if test ${REMOVE_ARCHDEP} = 0; then
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echo "$line"
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fi
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;;
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(*)
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echo "Unrecognised file, is it architecture-dependent?" >&2
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echo "$line" >&2
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exit 1
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;;
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esac
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done | awk '{if(arr[$NF] != 1){arr[$NF] = 1; print;}}'
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else
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awk '{if(arr[$NF] != 1){arr[$NF] = 1; print;}}'
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fi
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}
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# Extract & merge the Version: field from all files..
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# Don't catch Version: GnuPG lines, though!
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VERSION=$(get_field Version "$@" | sort -u)
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SVERSION=$(echo "$VERSION" | perl -pe 's/^\d+://')
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# Extract & merge the sources from all files
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SOURCE=$(get_field Source "$@" | sort -u)
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# Extract & merge the files from all files
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FILES=$(get_field Files "$@" | checksum_uniq)
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# Extract & merge the sha1 checksums from all files
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SHA1S=$(get_field Checksums-Sha1 "$@" | checksum_uniq)
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# Extract & merge the sha256 checksums from all files
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SHA256S=$(get_field Checksums-Sha256 "$@" | checksum_uniq)
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# Extract & merge the description from all files
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DESCRIPTIONS=$(get_field Description "$@" | sort -u)
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# Extract & merge the Formats from all files
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FORMATS=$(get_field Format "$@" | sort -u)
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# Extract & merge the Checksums-* field names from all files
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CHECKSUMS=$(grep -h "^Checksums-.*:" "$@" | sort -u)
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UNSUPCHECKSUMS="$(echo "${CHECKSUMS}" | grep -v "^Checksums-Sha\(1\|256\):" || true)"
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# Sanity check #2: Versions must match
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if test $(echo "${VERSION}" | wc -l) -ne 1; then
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echo "ERROR: Version numbers do not match:" >&2
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grep "^Version: [0-9]" "$@" >&2
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exit 1
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fi
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# Sanity check #3: Sources must match
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if test $(echo "${SOURCE}" | wc -l) -ne 1; then
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echo "Error: Source packages do not match:" >&2
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grep "^Source: " "$@" >&2
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exit 1
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fi
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# Sanity check #4: Description for same binary must match
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if test $(echo "${DESCRIPTIONS}" | sed -e 's/ \+- .*$//' | uniq -d | wc -l) -ne 0; then
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echo "Error: Descriptions do not match:" >&2
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echo "${DESCRIPTIONS}" >&2
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exit 1
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fi
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# Sanity check #5: Formats must match
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if test $(echo "${FORMATS}" | wc -l) -ne 1; then
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if test "${FORMATS}" = "$(printf "1.7\n1.8\n")"; then
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FORMATS="1.7"
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CHECKSUMS=""
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UNSUPCHECKSUMS=""
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SHA1S=""
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SHA256S=""
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else
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echo "Error: Changes files have different Format fields:" >&2
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grep "^Format: " "$@" >&2
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exit 1
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fi
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fi
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# Sanity check #6: The Format must be one we understand
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case "$FORMATS" in
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1.7|1.8) # Supported
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;;
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*)
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echo "Error: Changes files use unknown Format:" >&2
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echo "${FORMATS}" >&2
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exit 1
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;;
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esac
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# Sanity check #7: Unknown checksum fields
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if test -n "${UNSUPCHECKSUMS}"; then
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echo "Error: Unsupported checksum fields:" >&2
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echo "${UNSUPCHECKSUMS}" >&2
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exit 1
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fi
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if test ${FILE} = 1; then
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DIR=$(dirname "$1")
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REDIR1="> '${DIR}/${SOURCE}_${SVERSION}_multi.changes'"
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REDIR2=">$REDIR1"
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fi
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# Temporary output
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OUTPUT=$(mktemp --tmpdir mergechanges.tmp.XXXXXXXXXX)
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DESCFILE=$(mktemp --tmpdir mergechanges.tmp.XXXXXXXXXX)
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trap 'rm -f "${OUTPUT}" "${DESCFILE}"' EXIT
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# Copy one of the files to ${OUTPUT}, nuking any PGP signature
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if $(grep -q "BEGIN PGP SIGNED MESSAGE" "$1"); then
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perl -ne 'next if 1../^$/; next if /^$/..1; print' "$1" > ${OUTPUT}
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else
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cp "$1" ${OUTPUT}
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fi
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# Combine the Binary: and Description: fields. This is straightforward,
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# unless we want to exclude some binary packages, in which case we need
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# more thought.
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BINARY=$(get_field Binary "$@" | tr ' ' '\n' | sort -u)
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if test ${REMOVE_ARCHDEP} = 1 && test ${REMOVE_INDEP} = 1; then
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BINARY=
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DESCRIPTIONS=
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elif test ${REMOVE_ARCHDEP} = 1 || test ${REMOVE_INDEP} = 1; then
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keep_binaries=$(
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get_field Files "$@" | while read -r line; do
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file="${line##* }"
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case "$line" in
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("")
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# empty first line
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echo "$line"
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;;
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(*.dsc|*.diff.gz|*.tar.*|*.buildinfo)
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# source or buildinfo
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;;
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(*_all.deb|*_all.udeb)
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# architecture-indep
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package="${file%%_*}"
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if ! echo "$BINARY" | grep -q -x -F "$package"; then
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echo "Warning: $package not found in Binary field" >&2
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echo "$line" >&2
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fi
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if test ${REMOVE_INDEP} != 1; then
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echo "$package"
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fi
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;;
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(*.deb|*.udeb)
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# architecture-specific
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package="${file%%_*}"
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if ! echo "$BINARY" | grep -q -x -F "$package"; then
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echo "Warning: $package not found in Binary field" >&2
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echo "$line" >&2
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fi
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if test ${REMOVE_ARCHDEP} != 1; then
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echo "$package"
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fi
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;;
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(*)
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echo "Unrecognised file, is it architecture-dependent?" >&2
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echo "$line" >&2
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exit 1
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;;
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esac
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done \
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| tr '\n' ' ')
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BINARY=$(
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echo "$BINARY" |
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while read -r line; do
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if echo " $keep_binaries" | grep -q -F " $line "; then
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echo "$line";
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fi
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done
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)
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DESCRIPTIONS=$(
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echo "$DESCRIPTIONS" |
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while read -r line; do
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package="${line%% *}"
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if echo " $keep_binaries" | grep -q -F " $package "; then
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echo "$line";
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fi
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done
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)
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fi
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BINARY=$(echo "$BINARY" | tr '\n' ' ' | sed 's/ $//')
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if test -n "${DESCRIPTIONS}"; then
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printf "Description:" > "${DESCFILE}"
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echo "${DESCRIPTIONS}" | sed -e 's/^/ /' >> "${DESCFILE}"
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fi
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if [ -n "$BINARY" ]; then
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BINARY="Binary: $BINARY\\n"
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fi
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# Modify the output to be the merged version:
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# * Replace the Architecture: and Binary: fields
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# * Nuke the value of Checksums-*: and Files:
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# * Insert the Description: field before the Changes: field
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#
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# We print Binary directly before Source instead of directly replacing
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# Binary, because with dpkg 1.19.3, if the first .changes file is
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# source-only, it won't have a Binary field at all.
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eval "awk -- '/^[^ ]/{ deleting=0 }
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/^ /{
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if (!deleting) {
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print
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}
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next
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}
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/^Architecture: /{printf \"%s ${ARCHS}\\n\", \$1; deleting=1; next}
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/^Source: /{printf \"${BINARY}\"; print; next}
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/^Binary: /{deleting=1; next}
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/^Changes:/{
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field=\$0
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while ((getline < \"${DESCFILE}\") > 0) {
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print
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}
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printf \"%s\\n\", field
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next
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}
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/^Format: /{ printf \"%s ${FORMATS}\\n\", \$1; deleting=1; next}
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/^(Checksums-.*|Files|Description):/{ deleting=1; next }
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{ print }' \
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${OUTPUT} ${REDIR1}"
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# Voodoo magic to get the merged file and checksum lists into the output
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if test -n "${SHA1S}"; then
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eval "printf 'Checksums-Sha1:' ${REDIR2}"
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eval "echo '${SHA1S}' | sed -e 's/^/ /' ${REDIR2}"
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fi
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if test -n "${SHA256S}"; then
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eval "printf 'Checksums-Sha256:' ${REDIR2}"
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eval "echo '${SHA256S}' | sed -e 's/^/ /' ${REDIR2}"
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fi
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eval "printf 'Files:' ${REDIR2}"
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eval "echo '${FILES}' | sed -e 's/^/ /' ${REDIR2}"
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if test ${DELETE} = 1; then
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rm "$@"
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fi
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exit 0
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