caf5fbe9af
The output of GIT-VERSION-GEN can be sourced by our Makefile to make the version available there. The output has a couple of spaces around the equals sign, which is perfectly valid for parsing it in our Makefile. But in subsequent steps we'll also want to source the file in a couple of newly-introduced shell scripts, but having spaces around variable assignments is invalid there. Prepare for this step by dropping the spaces surrounding the equals sign. Like this, we can easily use the same file both in our Makefile and in shell scripts. Signed-off-by: Patrick Steinhardt <ps@pks.im>
95 lines
2.2 KiB
Bash
Executable File
95 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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DEF_VER=0.21.GITGUI
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LF='
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'
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if test "$#" -ne 2
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then
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echo >&2 "usage: $0 <SOURCE_DIR> <OUTPUT>"
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exit 1
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fi
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SOURCE_DIR="$1"
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OUTPUT="$2"
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# Protect us from reading Git version information outside of the Git directory
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# in case it is not a repository itself, but embedded in an unrelated
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# repository.
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GIT_CEILING_DIRECTORIES="$SOURCE_DIR/.."
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export GIT_CEILING_DIRECTORIES
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tree_search ()
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{
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head=$1
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tree=$2
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for p in $(git -C "$SOURCE_DIR" rev-list --parents --max-count=1 $head 2>/dev/null)
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do
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test $tree = $(git -C "$SOURCE_DIR" rev-parse $p^{tree} 2>/dev/null) &&
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vn=$(git -C "$SOURCE_DIR" describe --abbrev=4 $p 2>/dev/null) &&
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case "$vn" in
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gitgui-[0-9]*) echo $vn; break;;
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esac
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done
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}
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# Always use the tarball version file if found, just
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# in case we are somehow contained in a larger git
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# repository that doesn't actually track our state.
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# (At least one package manager is doing this.)
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#
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# We may be a subproject, so try looking for the merge
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# commit that supplied this directory content if we are
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# not at the toplevel. We probably will always be the
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# second parent in the commit, but we shouldn't rely on
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# that fact.
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#
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# If we are at the toplevel or the merge assumption fails
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# try looking for a gitgui-* tag.
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if test -f "$SOURCE_DIR"/version &&
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VN=$(cat "$SOURCE_DIR"/version)
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then
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: happy
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elif prefix="$(git -C "$SOURCE_DIR" rev-parse --show-prefix 2>/dev/null)"
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test -n "$prefix" &&
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head=$(git -C "$SOURCE_DIR" rev-list --max-count=1 HEAD -- . 2>/dev/null) &&
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tree=$(git -C "$SOURCE_DIR" rev-parse --verify "HEAD:$prefix" 2>/dev/null) &&
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VN=$(tree_search $head $tree)
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case "$VN" in
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gitgui-[0-9]*) : happy ;;
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*) (exit 1) ;;
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esac
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then
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VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
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elif VN=$(git -C "$SOURCE_DIR" describe --abbrev=4 HEAD 2>/dev/null) &&
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case "$VN" in
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gitgui-[0-9]*) : happy ;;
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*) (exit 1) ;;
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esac
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then
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VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
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else
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VN="$DEF_VER"
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fi
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dirty=$(git -C "$SOURCE_DIR" diff-index --name-only HEAD 2>/dev/null) || dirty=
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case "$dirty" in
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'')
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;;
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*)
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VN="$VN-dirty" ;;
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esac
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if test -r "$OUTPUT"
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then
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VC=$(sed -e 's/^GITGUI_VERSION=//' <"$OUTPUT")
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else
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VC=unset
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fi
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test "$VN" = "$VC" || {
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echo >&2 "GITGUI_VERSION=$VN"
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echo "GITGUI_VERSION=$VN" >"$OUTPUT"
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}
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