| #!/bin/sh |
| |
| DEF_VER=v2.48.GIT |
| |
| LF=' |
| ' |
| |
| if test "$#" -ne 3 |
| then |
| echo >&2 "USAGE: $0 <SOURCE_DIR> <INPUT> <OUTPUT>" |
| exit 1 |
| fi |
| |
| SOURCE_DIR="$1" |
| INPUT="$2" |
| OUTPUT="$3" |
| |
| if ! test -f "$INPUT" |
| then |
| echo >&2 "Input is not a file: $INPUT" |
| exit 1 |
| fi |
| |
| # Protect us from reading Git version information outside of the Git directory |
| # in case it is not a repository itself, but embedded in an unrelated |
| # repository. |
| GIT_CEILING_DIRECTORIES="$SOURCE_DIR/.." |
| export GIT_CEILING_DIRECTORIES |
| |
| if test -z "$GIT_VERSION" |
| then |
| # First see if there is a version file (included in release tarballs), |
| # then try git-describe, then default. |
| if test -f "$SOURCE_DIR"/version |
| then |
| VN=$(cat "$SOURCE_DIR"/version) || VN="$DEF_VER" |
| elif { |
| test -d "$SOURCE_DIR/.git" || |
| test -d "${GIT_DIR:-.git}" || |
| test -f "$SOURCE_DIR"/.git; |
| } && |
| VN=$(git -C "$SOURCE_DIR" describe --match "v[0-9]*" HEAD 2>/dev/null) && |
| case "$VN" in |
| *$LF*) (exit 1) ;; |
| v[0-9]*) |
| git -C "$SOURCE_DIR" update-index -q --refresh |
| test -z "$(git -C "$SOURCE_DIR" diff-index --name-only HEAD --)" || |
| VN="$VN-dirty" ;; |
| esac |
| then |
| VN=$(echo "$VN" | sed -e 's/-/./g'); |
| else |
| VN="$DEF_VER" |
| fi |
| |
| GIT_VERSION=$(expr "$VN" : v*'\(.*\)') |
| fi |
| |
| if test -z "$GIT_BUILT_FROM_COMMIT" |
| then |
| GIT_BUILT_FROM_COMMIT=$(git -C "$SOURCE_DIR" rev-parse -q --verify HEAD 2>/dev/null) |
| fi |
| |
| if test -z "$GIT_DATE" |
| then |
| GIT_DATE=$(git -C "$SOURCE_DIR" show --quiet --format='%as' 2>/dev/null) |
| fi |
| |
| if test -z "$GIT_USER_AGENT" |
| then |
| GIT_USER_AGENT="git/$GIT_VERSION" |
| fi |
| |
| # While released Git versions only have three numbers, development builds also |
| # have a fourth number that corresponds to the number of patches since the last |
| # release. |
| read GIT_MAJOR_VERSION GIT_MINOR_VERSION GIT_MICRO_VERSION GIT_PATCH_LEVEL trailing <<EOF |
| $(echo "$GIT_VERSION" 0 0 0 0 | tr '.a-zA-Z-' ' ') |
| EOF |
| |
| sed -e "s|@GIT_VERSION@|$GIT_VERSION|" \ |
| -e "s|@GIT_MAJOR_VERSION@|$GIT_MAJOR_VERSION|" \ |
| -e "s|@GIT_MINOR_VERSION@|$GIT_MINOR_VERSION|" \ |
| -e "s|@GIT_MICRO_VERSION@|$GIT_MICRO_VERSION|" \ |
| -e "s|@GIT_PATCH_LEVEL@|$GIT_PATCH_LEVEL|" \ |
| -e "s|@GIT_BUILT_FROM_COMMIT@|$GIT_BUILT_FROM_COMMIT|" \ |
| -e "s|@GIT_USER_AGENT@|$GIT_USER_AGENT|" \ |
| -e "s|@GIT_DATE@|$GIT_DATE|" \ |
| "$INPUT" >"$OUTPUT".$$+ |
| |
| if ! test -f "$OUTPUT" || ! cmp "$OUTPUT".$$+ "$OUTPUT" >/dev/null |
| then |
| mv "$OUTPUT".$$+ "$OUTPUT" |
| else |
| rm "$OUTPUT".$$+ |
| fi |