123 lines
3.4 KiB
Bash
Executable File
123 lines
3.4 KiB
Bash
Executable File
#!/usr/bin/bash
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# Imports patches from a Git repository to replace all currently present patches of a PKGBUILD
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# setup shell environment
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#set -euxo pipefail
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set -e # abort on first error
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shopt -s nullglob
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source /usr/share/makepkg/util/message.sh
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colorize
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# read arguments
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if [[ ! $1 ]] || [[ ! $2 ]] || [[ ! $3 ]]; then
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echo 'Imports patches from a Git repository to replace all currently present patches of a PKGBUILD'
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echo "usage: $0 path/to/PKGBUILD path/to/git-repo commit-range"
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echo "example: $0 ~/pkgbuilds/some-project/default/PKGBUILD ~/repos/some-project master..fixes-for-arch-package"
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echo "caveats: Only supports sha256sums (so far). Variables in other source lines than the first are not preserved."
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exit -1
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fi
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pkgbuild_file=$1
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pkgbuild_dir=${pkgbuild_file%/*}
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git_repo_path=$2
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git_commit_range=$3
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if [[ ! -f $pkgbuild_file ]]; then
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error "The specified PKGBUILD file \"$pkgbuild_file\" does not exist."
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exit -1
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fi
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if [[ ! -d $git_repo_path ]]; then
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error "The specified Git repository \"$git_repo_path\" does not exist."
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exit -2
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fi
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msg "Sourcing $pkgbuild_file"
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source "$pkgbuild_file"
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msg "Determine sources/checksums to be preserved"
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new_sources=()
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new_sha256sums=()
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file_index=0
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for source in "${source[@]}"; do
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# TODO: support other checksums than SHA-256
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if [ "${source: -6}" != .patch ]; then
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new_sources+=("$source")
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new_sha256sums+=("${sha256sums[$file_index]}")
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msg2 "$source; ${sha256sums[$file_index]}"
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fi
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file_index=$((file_index + 1))
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done
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msg "Removing old patches"
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patches=("$pkgbuild_dir"/*.patch)
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for patch in "${patches[@]}"; do
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if [[ -f $patch ]]; then
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msg2 "$patch"
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rm "$patch"
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fi
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done
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msg "Exporting patches"
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[ "${pkgbuild_dir:0:1}" != / ] \
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&& absolute_pkgbuild_dir=$PWD/$pkgbuild_dir \
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|| absolute_pkgbuild_dir=$pkgbuild_dir
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git -C "$git_repo_path" format-patch "$git_commit_range" --output-directory "$absolute_pkgbuild_dir"
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msg "Determine new sources/checksums"
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new_patches=("$pkgbuild_dir"/*.patch)
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for patch in "${new_patches[@]}"; do
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new_sources+=("$patch")
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sum=$(sha256sum "$patch")
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sum=${sum%% *}
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new_sha256sums+=("$sum")
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msg2 "$patch; $sum"
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done
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msg "Adjust PKGBUILD file"
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# preserve first src line to keep variables unevaluated
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# FIXME: allow this for all sources which should be preserved
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newsrc=$(grep 'source=(' "$pkgbuild_file")
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[[ $newsrc ]] || newsrc="source=(${new_sources[0]}"
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[ "${newsrc: -1:1}" == ')' ] && newsrc="${newsrc: 0:-1}" # truncate trailing )
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# add sources
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for source in "${new_sources[@]:1}"; do
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newsrc+="\n '${source##*/}'"
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done
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newsrc+=')'
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# add sha256sums
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newsums="sha256sums=('${new_sha256sums[0]}'"
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for sum in "${new_sha256sums[@]:1}"; do
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newsums+="\n '${sum}'"
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done
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newsums+=')'
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# apply changes
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mv "$pkgbuild_file" "$pkgbuild_file.bak"
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awk -v newsrc="$newsrc" -v newsums="$newsums" '
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/^[[:blank:]]*source(_[^=]+)?=/,/\)[[:blank:]]*(#.*)?$/ {
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if (!s) {
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print newsrc
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s++
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}
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next
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}
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/^[[:blank:]]*(md|sha)[[:digit:]]+sums(_[^=]+)?=/,/\)[[:blank:]]*(#.*)?$/ {
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if (!w) {
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print newsums
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w++
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}
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next
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}
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1
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END {
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if (!s) {
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print newsrc
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}
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if (!w) {
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print newsums
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}
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}
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' "$pkgbuild_file.bak" > "$pkgbuild_file"
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msg "Diff"
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diff -Naur "$pkgbuild_file.bak" "$pkgbuild_file"
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