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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 20:32:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 20:32:59 +0000 |
commit | 4d57e0a8dab2139a631a21aab862487481548702 (patch) | |
tree | f7cea0b9939e2ecb7a301de6c83bada29452046d /scripts/dscextract.sh | |
parent | Initial commit. (diff) | |
download | devscripts-4d57e0a8dab2139a631a21aab862487481548702.tar.xz devscripts-4d57e0a8dab2139a631a21aab862487481548702.zip |
Adding upstream version 2.23.7.upstream/2.23.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rwxr-xr-x | scripts/dscextract.sh | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/scripts/dscextract.sh b/scripts/dscextract.sh new file mode 100755 index 0000000..78e2334 --- /dev/null +++ b/scripts/dscextract.sh @@ -0,0 +1,121 @@ +#!/bin/sh + +# dscextract.sh - Extract a single file from a Debian source package +# Copyright (C) 2011 Christoph Berg <myon@debian.org> +# +# 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, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +set -eu + +PROGNAME=${0##*/} + +die() { + echo "$*" >&2 + exit 2 +} + +setzip() { + case $1 in + *.gz) ZIP=--gzip ;; + *.xz) ZIP=--xz ;; + *.lzma) ZIP=--lzma ;; + *.bz2) ZIP=--bzip2 ;; + esac +} + +FAST="" +while getopts "f" opt ; do + case $opt in + f) FAST=yes ;; + *) exit 2 ;; + esac +done +# shift away args +shift $(($OPTIND - 1)) + +[ $# = 2 ] || die "Usage: $PROGNAME <dsc> <file>" +DSC="$1" +test -e "$DSC" || die "$DSC not found" +FILE="$2" + +DSCDIR=$(dirname "$DSC") +WORKDIR=$(mktemp -d --tmpdir dscextract.XXXXXX) +trap 'rm -rf "$WORKDIR"' EXIT + +if DIFFGZ=$(grep -E '^ [0-9a-f]{32,64} [0-9]+ [^ ]+\.diff\.(gz|xz|lzma|bz2)$' "$DSC") ; then + DIFFGZ=$(echo "$DIFFGZ" | cut -d ' ' -f 4 | head -n 1) + test -e "$DSCDIR/$DIFFGZ" || die "$DSCDIR/$DIFFGZ: not found" + filterdiff -p1 -i "$FILE" -z "$DSCDIR/$DIFFGZ" > "$WORKDIR/patch" + if test -s "$WORKDIR/patch" ; then + # case 1: file found in .diff.gz + if ! grep -q '^@@ -0,0 ' "$WORKDIR/patch" ; then + # case 1a: patch requires original file + ORIGTGZ=$(grep -E '^ [0-9a-f]{32,64} [0-9]+ [^ ]+\.orig\.tar\.(gz|xz|lzma|bz2)$' "$DSC") || die "no orig.tar.* found in $DSC" + ORIGTGZ=$(echo "$ORIGTGZ" | cut -d ' ' -f 4 | head -n 1) + setzip $ORIGTGZ + test -e "$DSCDIR/$ORIGTGZ" || die "$DSCDIR/$ORIGTGZ not found" + tar --extract --to-stdout $ZIP --file "$DSCDIR/$ORIGTGZ" --wildcards "*/$FILE" > "$WORKDIR/output" 2>/dev/null || : + test -s "$WORKDIR/output" || die "$FILE not found in $DSCDIR/$ORIGTGZ, but required by patch" + fi + patch --silent "$WORKDIR/output" < "$WORKDIR/patch" + test -s "$WORKDIR/output" || die "patch $FILE did not produce any output" + cat "$WORKDIR/output" + exit 0 + elif [ "$FAST" ] ; then + # in fast mode, don't bother looking into .orig.tar.gz + exit 1 + fi +fi + +if DEBIANTARGZ=$(grep -E '^ [0-9a-f]{32,64} [0-9]+ [^ ]+\.debian\.tar\.(gz|xz|lzma|bz2)$' "$DSC") ; then + case $FILE in + debian/*) + DEBIANTARGZ=$(echo "$DEBIANTARGZ" | cut -d ' ' -f 4 | head -n 1) + test -e "$DSCDIR/$DEBIANTARGZ" || die "$DSCDIR/$DEBIANTARGZ not found" + setzip $DEBIANTARGZ + tar --extract --to-stdout $ZIP --file "$DSCDIR/$DEBIANTARGZ" "$FILE" > "$WORKDIR/output" 2>/dev/null || : + test -s "$WORKDIR/output" || exit 1 + # case 2a: file found in .debian.tar.gz + cat "$WORKDIR/output" + exit 0 + # for 3.0 format, no need to look in other places here + ;; + *) + ORIGTGZ=$(grep -E '^ [0-9a-f]{32,64} [0-9]+ [^ ]+\.orig\.tar\.(gz|xz|lzma|bz2)$' "$DSC") || die "no orig.tar.gz found in $DSC" + ORIGTGZ=$(echo "$ORIGTGZ" | cut -d ' ' -f 4 | head -n 1) + test -e "$DSCDIR/$ORIGTGZ" || die "$DSCDIR/$ORIGTGZ not found" + setzip $ORIGTGZ + tar --extract --to-stdout $ZIP --file "$DSCDIR/$ORIGTGZ" --wildcards --no-wildcards-match-slash "*/$FILE" > "$WORKDIR/output" 2>/dev/null || : + test -s "$WORKDIR/output" || exit 1 + # case 2b: file found in .orig.tar.gz + # TODO: apply patches from debian.tar.gz + cat "$WORKDIR/output" + exit 0 + ;; + esac +fi + +if TARGZ=$(grep -E '^ [0-9a-f]{32,64} [0-9]+ [^ ]+\.tar\.(gz|xz|lzma|bz2)$' "$DSC") ; then + TARGZ=$(echo "$TARGZ" | cut -d ' ' -f 4 | head -n 1) + test -e "$DSCDIR/$TARGZ" || die "$DSCDIR/$TARGZ not found" + setzip $TARGZ + tar --extract --to-stdout $ZIP --file "$DSCDIR/$TARGZ" --wildcards --no-wildcards-match-slash "*/$FILE" > "$WORKDIR/output" 2>/dev/null || : + test -s "$WORKDIR/output" || exit 1 + # case 3: file found in .tar.gz or .orig.tar.gz + cat "$WORKDIR/output" + exit 0 +fi + +exit 1 |