diff options
Diffstat (limited to 'src/diffpkg.in')
| -rw-r--r-- | src/diffpkg.in | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/diffpkg.in b/src/diffpkg.in new file mode 100644 index 0000000..963f2c6 --- /dev/null +++ b/src/diffpkg.in @@ -0,0 +1,228 @@ +#!/bin/bash +# +# SPDX-License-Identifier: GPL-3.0-or-later + +shopt -s extglob + +m4_include(lib/common.sh) + +usage() { + cat <<- _EOF_ + Usage: ${BASH_SOURCE[0]##*/} [OPTIONS] [MODES] [FILE|PKGNAME...] + + Searches for a locally built package corresponding to the PKGBUILD, and + downloads the last version of that package from the Pacman repositories. + It then compares the package archives using different modes while using + simple tar content list by default. + + When given one package, use it to diff against the locally built one. + When given two packages, diff both packages against each other. + + In either case, a package name will be converted to a filename from the + cache, and diffpkg will proceed as though this filename was initially + specified. + + OPTIONS + -M, --makepkg-config Set an alternate makepkg configuration file + -v, --verbose Provide more detailed/unfiltered output + -h, --help Show this help text + + MODES + -l, --list Activate content list diff mode (default) + -d, --diffoscope Activate diffoscope diff mode + -p, --pkginfo Activate .PKGINFO diff mode + -b, --buildinfo Activate .BUILDINFO diff mode +_EOF_ +} + +MAKEPKG_CONF=/etc/makepkg.conf +VERBOSE=0 +TARLIST=0 +DIFFOSCOPE=0 +PKGINFO=0 +BUILDINFO=0 + +# option checking +while (( $# )); do + case $1 in + -h|--help) + usage + exit 0 + ;; + -M|--makepkg-config) + MAKEPKG_CONF="$2" + shift 2 + ;; + -l|--list) + TARLIST=1 + shift + ;; + -d|--diffoscope) + DIFFOSCOPE=1 + shift + ;; + -p|--pkginfo) + PKGINFO=1 + shift + ;; + -b|--buildinfo) + BUILDINFO=1 + shift + ;; + -v|--verbose) + VERBOSE=1 + shift + ;; + --) + shift + break + ;; + -*,--*) + die "invalid argument: %s" "$1" + ;; + *) + break + ;; + esac +done + +if ! (( DIFFOSCOPE || TARLIST || PKGINFO || BUILDINFO )); then + TARLIST=1 +fi + +# Source makepkg.conf; fail if it is not found +if [[ -r "${MAKEPKG_CONF}" ]]; then + # shellcheck source=config/makepkg/x86_64.conf + source "${MAKEPKG_CONF}" +else + die "${MAKEPKG_CONF} not found!" +fi + +# Source user-specific makepkg.conf overrides +if [[ -r "${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf" ]]; then + # shellcheck source=/dev/null + source "${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf" +elif [[ -r "$HOME/.makepkg.conf" ]]; then + # shellcheck source=/dev/null + source "$HOME/.makepkg.conf" +fi + +STARTDIR=$(pwd) +trap 'rm -rf $TMPDIR' EXIT INT TERM QUIT +TMPDIR=$(mktemp -d --tmpdir diffpkg-script.XXXXXXXX) +export TMPDIR + +tar_list() { + bsdtar tf "$*" | if (( VERBOSE )); then + cat + else + sed -E 's|^usr/lib/modules/[0-9][^/]+|usr/lib/modules/[…]|g' + fi | sort +} + +diff_pkgs() { + local oldpkg newpkg + oldpkg=$(readlink -m "$1") + newpkg=$(readlink -m "$2") + + [[ -f $oldpkg ]] || die "No such file: %s" "${oldpkg}" + [[ -f $newpkg ]] || die "No such file: %s" "${newpkg}" + + if (( TARLIST )); then + tar_list "$oldpkg" > "$TMPDIR/filelist-old" + tar_list "$newpkg" > "$TMPDIR/filelist" + + sdiff -s "$TMPDIR/filelist-old" "$TMPDIR/filelist" + fi + + if (( PKGINFO )); then + bsdtar xOqf "$oldpkg" .PKGINFO > "$TMPDIR/pkginfo-old" + bsdtar xOqf "$newpkg" .PKGINFO > "$TMPDIR/pkginfo" + + sdiff -s "$TMPDIR/pkginfo-old" "$TMPDIR/pkginfo" + fi + + if (( BUILDINFO )); then + bsdtar xOqf "$oldpkg" .BUILDINFO > "$TMPDIR/buildinfo-old" + bsdtar xOqf "$newpkg" .BUILDINFO > "$TMPDIR/buildinfo" + + sdiff -s "$TMPDIR/buildinfo-old" "$TMPDIR/buildinfo" + fi + + if (( DIFFOSCOPE )); then + diffoscope "$oldpkg" "$newpkg" + fi +} + +fetch_pkg() { + local pkg pkgdest pkgurl + case $1 in + *://*) + pkgurl=$1 ;; + /*|*/*) + pkgurl=$(readlink -m "$1") ;; + *.pkg.tar*) + pkgurl=$1 ;; + '') + ;; + *) + pkg=$1 ;; + esac + + [[ -n $pkgurl ]] || pkgurl=$(pacman -Spdd --print-format '%l' --noconfirm "$pkg") || + die "Couldn't download previous package for %s." "$pkg" + + pkg=${pkgurl##*/} + pkgdest=$(mktemp -t -d "${pkg}-XXXXXX")/${pkg} + + if [[ $pkgurl = file://* || ( $pkgurl = /* && -f $pkgurl ) ]]; then + ln -sf "${pkgurl#file://}" "$pkgdest" + elif [[ -f "$PKGDEST/$pkg" ]]; then + ln -sf "$PKGDEST/$pkg" "$pkgdest" + elif [[ -f "$STARTDIR/$pkg" ]]; then + ln -sf "$STARTDIR/$pkg" "$pkgdest" + elif [[ $pkgurl = *://* ]]; then + curl -fsLC - --retry 3 --retry-delay 3 -o "$pkgdest" "$pkgurl" || \ + die "Couldn't download %s" "$pkgurl" + else + die "File not found: %s" "$pkgurl" + fi + + echo "$pkgdest" +} + +if (( $# < 2 )); then + if [[ ! -f PKGBUILD ]]; then + die "This must be run in the directory of a built package.\nTry '$(basename "$0") --help' for more information." + fi + + # shellcheck source=PKGBUILD.proto + . ./PKGBUILD + if [[ ${arch[0]} == 'any' ]]; then + CARCH='any' + fi + + for _pkgname in "${pkgname[@]}"; do + comparepkg=$_pkgname + pkgurl= + target_pkgver=$(get_full_version "$_pkgname") + if ! pkgfile=$(find_cached_package "$_pkgname" "$target_pkgver" "$CARCH"); then + die 'tarball not found for package: %s' "${_pkgname}-$target_pkgver" + fi + + ln -s "$pkgfile" "$TMPDIR" + + if (( $# )); then + comparepkg="$1" + fi + + oldpkg=$(fetch_pkg "$comparepkg") || exit 1 + + diff_pkgs "$oldpkg" "$pkgfile" + done +else + file1=$(fetch_pkg "$1") || exit 1 + file2=$(fetch_pkg "$2") || exit 1 + + diff_pkgs "$file1" "$file2" +fi |