| Current File : //bin/mergechanges |
#!/bin/bash
##
## mergechanges -- merge Architecture: and Files: fields of a set of .changes
## Copyright 2002 Gergely Nagy <algernon@debian.org>
## Changes copyright 2002,2003 by Julian Gilbey <jdg@debian.org>
##
## $MadHouse: home/bin/mergechanges,v 1.1 2002/01/25 12:37:27 algernon Exp $
##
## 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 <https://www.gnu.org/licenses/>.
set -e
PROGNAME=`basename $0`
synopsis () {
echo "Usage: $PROGNAME [-h|--help|--version] [-d] [-S|--source] [-i|--indep] [-f] <file1> <file2> [<file> ...]"
}
usage () {
synopsis
cat <<EOT
Merge the changes files <file1>, <file2>, .... Output on stdout
unless -f option given, in which case, output to
<package>_<version>_multi.changes in the same directory as <file1>.
If -i is given, only source and architecture-independent packages
are included in the output.
If -S is given, only the source package is included in the output.
EOT
}
version () {
echo \
"This is $PROGNAME, from the Debian devscripts package, version 2.22.1ubuntu1
This code is copyright (C) 2002 Gergely Nagy <algernon@debian.org>
Changes copyright 2002 by Julian Gilbey <jdg@debian.org>
This program comes with ABSOLUTELY NO WARRANTY.
You are free to redistribute this code under the terms of the
GNU General Public License, version 2 or later."
}
# Commandline parsing
FILE=0
DELETE=0
REMOVE_ARCHDEP=0
REMOVE_INDEP=0
while [ $# -gt 0 ]; do
case "$1" in
-h|--help)
usage
exit 0
;;
--version)
version
exit 0
;;
-f)
FILE=1
shift
;;
-d)
DELETE=1
shift
;;
-i|--indep)
REMOVE_ARCHDEP=1
shift
;;
-S|--source)
REMOVE_ARCHDEP=1
REMOVE_INDEP=1
shift
;;
-*)
echo "Unrecognised option $1. Use $progname --help for help" >&2
exit 1
;;
*)
break
;;
esac
done
# Sanity check #0: Do we have enough parameters?
if [ $# -lt 2 ]; then
echo "Not enough parameters." >&2
synopsis >&2
exit 1
fi
# Sanity check #1: Do the requested files exist?
for f in "$@"; do
if ! test -r $f; then
echo "ERROR: Cannot read $f!" >&2
exit 1
fi
done
# Get a (possibly multi-line) field.
get_field () {
perl -e '
use warnings;
use strict;
use autodie;
use Dpkg::Control;
my $field = shift;
foreach my $file (@ARGV) {
my $changes = Dpkg::Control->new(type => CTRL_FILE_CHANGES);
$changes->load($file);
next unless defined $changes->{$field};
print $changes->{$field};
print "\n";
}
' "$@"
}
# Extract the Architecture: field from all .changes files,
# and merge them, sorting out duplicates. Skip architectures
# other than all and source if desired.
ARCHS=$(get_field Architecture "$@" | tr ' ' '\n' | sort -u)
if test ${REMOVE_ARCHDEP} = 1; then
ARCHS=$(echo "$ARCHS" | grep -E '^(all|source)$')
fi
if test ${REMOVE_INDEP} = 1; then
ARCHS=$(echo "$ARCHS" | grep -vxF all)
fi
ARCHS=$(echo "$ARCHS" | tr '\n' ' ' | sed 's/ $//')
checksum_uniq() {
local line
local IFS=
if test ${REMOVE_ARCHDEP} = 1 -o ${REMOVE_INDEP} = 1; then
while read line; do
case "$line" in
("")
# empty first line
echo "$line"
;;
(*.dsc|*.diff.gz|*.tar.*|*_source.buildinfo)
# source
echo "$line"
;;
(*_all.deb|*_all.udeb|*_all.buildinfo)
# architecture-indep
if test ${REMOVE_INDEP} = 0; then
echo "$line"
fi
;;
(*.deb|*.udeb|*.buildinfo)
# architecture-specific
if test ${REMOVE_ARCHDEP} = 0; then
echo "$line"
fi
;;
(*)
echo "Unrecognised file, is it architecture-dependent?" >&2
echo "$line" >&2
exit 1
;;
esac
done | awk '{if(arr[$NF] != 1){arr[$NF] = 1; print;}}'
else
awk '{if(arr[$NF] != 1){arr[$NF] = 1; print;}}'
fi
}
# Extract & merge the Version: field from all files..
# Don't catch Version: GnuPG lines, though!
VERSION=$(get_field Version "$@" | sort -u)
SVERSION=$(echo "$VERSION" | perl -pe 's/^\d+://')
# Extract & merge the sources from all files
SOURCE=$(get_field Source "$@" | sort -u)
# Extract & merge the files from all files
FILES=$(get_field Files "$@" | checksum_uniq)
# Extract & merge the sha1 checksums from all files
SHA1S=$(get_field Checksums-Sha1 "$@" | checksum_uniq)
# Extract & merge the sha256 checksums from all files
SHA256S=$(get_field Checksums-Sha256 "$@" | checksum_uniq)
# Extract & merge the description from all files
DESCRIPTIONS=$(get_field Description "$@" | sort -u)
# Extract & merge the Formats from all files
FORMATS=$(get_field Format "$@" | sort -u)
# Extract & merge the Checksums-* field names from all files
CHECKSUMS=$(grep -h "^Checksums-.*:" "$@" | sort -u)
UNSUPCHECKSUMS="$(echo "${CHECKSUMS}" | grep -v "^Checksums-Sha\(1\|256\):" || true)"
# Sanity check #2: Versions must match
if test $(echo "${VERSION}" | wc -l) -ne 1; then
echo "ERROR: Version numbers do not match:" >&2
grep "^Version: [0-9]" "$@" >&2
exit 1
fi
# Sanity check #3: Sources must match
if test $(echo "${SOURCE}" | wc -l) -ne 1; then
echo "Error: Source packages do not match:" >&2
grep "^Source: " "$@" >&2
exit 1
fi
# Sanity check #4: Description for same binary must match
if test $(echo "${DESCRIPTIONS}" | sed -e 's/ \+- .*$//' | uniq -d | wc -l) -ne 0; then
echo "Error: Descriptions do not match:" >&2
echo "${DESCRIPTIONS}" >&2
exit 1
fi
# Sanity check #5: Formats must match
if test $(echo "${FORMATS}" | wc -l) -ne 1; then
if test "${FORMATS}" = "$(printf "1.7\n1.8\n")"; then
FORMATS="1.7"
CHECKSUMS=""
UNSUPCHECKSUMS=""
SHA1S=""
SHA256S=""
else
echo "Error: Changes files have different Format fields:" >&2
grep "^Format: " "$@" >&2
exit 1
fi
fi
# Sanity check #6: The Format must be one we understand
case "$FORMATS" in
1.7|1.8) # Supported
;;
*)
echo "Error: Changes files use unknown Format:" >&2
echo "${FORMATS}" >&2
exit 1
;;
esac
# Sanity check #7: Unknown checksum fields
if test -n "${UNSUPCHECKSUMS}"; then
echo "Error: Unsupported checksum fields:" >&2
echo "${UNSUPCHECKSUMS}" >&2
exit 1
fi
if test ${FILE} = 1; then
DIR=`dirname "$1"`
REDIR1="> '${DIR}/${SOURCE}_${SVERSION}_multi.changes'"
REDIR2=">$REDIR1"
fi
# Temporary output
OUTPUT=$(mktemp --tmpdir mergechanges.tmp.XXXXXXXXXX)
DESCFILE=$(mktemp --tmpdir mergechanges.tmp.XXXXXXXXXX)
trap 'rm -f "${OUTPUT}" "${DESCFILE}"' EXIT
# Copy one of the files to ${OUTPUT}, nuking any PGP signature
if $(grep -q "BEGIN PGP SIGNED MESSAGE" "$1"); then
perl -ne 'next if 1../^$/; next if /^$/..1; print' "$1" > ${OUTPUT}
else
cp "$1" ${OUTPUT}
fi
# Combine the Binary: and Description: fields. This is straightforward,
# unless we want to exclude some binary packages, in which case we need
# more thought.
BINARY=$(get_field Binary "$@" | tr ' ' '\n' | sort -u)
if test ${REMOVE_ARCHDEP} = 1 && test ${REMOVE_INDEP} = 1; then
BINARY=
DESCRIPTIONS=
elif test ${REMOVE_ARCHDEP} = 1 || test ${REMOVE_INDEP} = 1; then
keep_binaries=$(
get_field Files "$@" | while read -r line; do
file="${line##* }"
case "$line" in
("")
# empty first line
echo "$line"
;;
(*.dsc|*.diff.gz|*.tar.*|*.buildinfo)
# source or buildinfo
;;
(*_all.deb|*_all.udeb)
# architecture-indep
package="${file%%_*}"
if ! echo "$BINARY" | grep -q -x -F "$package"; then
echo "Warning: $package not found in Binary field" >&2
echo "$line" >&2
fi
if test ${REMOVE_INDEP} != 1; then
echo "$package"
fi
;;
(*.deb|*.udeb)
# architecture-specific
package="${file%%_*}"
if ! echo "$BINARY" | grep -q -x -F "$package"; then
echo "Warning: $package not found in Binary field" >&2
echo "$line" >&2
fi
if test ${REMOVE_ARCHDEP} != 1; then
echo "$package"
fi
;;
(*)
echo "Unrecognised file, is it architecture-dependent?" >&2
echo "$line" >&2
exit 1
;;
esac
done \
| tr '\n' ' ')
BINARY=$(
echo "$BINARY" |
while read -r line; do
if echo " $keep_binaries" | grep -q -F " $line "; then
echo "$line";
fi
done
)
DESCRIPTIONS=$(
echo "$DESCRIPTIONS" |
while read -r line; do
package="${line%% *}"
if echo " $keep_binaries" | grep -q -F " $package "; then
echo "$line";
fi
done
)
fi
BINARY=$(echo "$BINARY" | tr '\n' ' ' | sed 's/ $//')
if test -n "${DESCRIPTIONS}"; then
printf "Description:" > "${DESCFILE}"
echo "${DESCRIPTIONS}" | sed -e 's/^/ /' >> "${DESCFILE}"
fi
if [ -n "$BINARY" ]; then
BINARY="Binary: $BINARY\\n"
fi
# Modify the output to be the merged version:
# * Replace the Architecture: and Binary: fields
# * Nuke the value of Checksums-*: and Files:
# * Insert the Description: field before the Changes: field
#
# We print Binary directly before Source instead of directly replacing
# Binary, because with dpkg 1.19.3, if the first .changes file is
# source-only, it won't have a Binary field at all.
eval "awk -- '/^[^ ]/{ deleting=0 }
/^ /{
if (!deleting) {
print
}
next
}
/^Architecture: /{printf \"%s ${ARCHS}\\n\", \$1; deleting=1; next}
/^Source: /{printf \"${BINARY}\"; print; next}
/^Binary: /{deleting=1; next}
/^Changes:/{
field=\$0
while ((getline < \"${DESCFILE}\") > 0) {
print
}
printf \"%s\\n\", field
next
}
/^Format: /{ printf \"%s ${FORMATS}\\n\", \$1; deleting=1; next}
/^(Checksums-.*|Files|Description):/{ deleting=1; next }
{ print }' \
${OUTPUT} ${REDIR1}"
# Voodoo magic to get the merged file and checksum lists into the output
if test -n "${SHA1S}"; then
eval "printf 'Checksums-Sha1:' ${REDIR2}"
eval "echo '${SHA1S}' | sed -e 's/^/ /' ${REDIR2}"
fi
if test -n "${SHA256S}"; then
eval "printf 'Checksums-Sha256:' ${REDIR2}"
eval "echo '${SHA256S}' | sed -e 's/^/ /' ${REDIR2}"
fi
eval "printf 'Files:' ${REDIR2}"
eval "echo '${FILES}' | sed -e 's/^/ /' ${REDIR2}"
if test ${DELETE} = 1; then
rm "$@"
fi
exit 0