| 1 | #!/bin/sh |
| 2 | |
| 3 | DEF_VER=v2.55.0 |
| 4 | |
| 5 | LF=' |
| 6 | ' |
| 7 | |
| 8 | if test "$#" -lt 2 || test "$#" -gt 3 |
| 9 | then |
| 10 | echo >&2 "USAGE: $0 <SOURCE_DIR> (--format=<STRING>|<INPUT>) [<OUTPUT>]" |
| 11 | exit 1 |
| 12 | fi |
| 13 | |
| 14 | SOURCE_DIR="$1" |
| 15 | |
| 16 | case "$2" in |
| 17 | --format=*) |
| 18 | INPUT="${2#--format=}" |
| 19 | ;; |
| 20 | *) |
| 21 | if ! test -f "$2" |
| 22 | then |
| 23 | echo >&2 "Input is not a file: $2" |
| 24 | exit 1 |
| 25 | fi |
| 26 | INPUT=$(cat "$2") |
| 27 | ;; |
| 28 | esac |
| 29 | |
| 30 | OUTPUT="$3" |
| 31 | |
| 32 | # Protect us from reading Git version information outside of the Git directory |
| 33 | # in case it is not a repository itself, but embedded in an unrelated |
| 34 | # repository. |
| 35 | GIT_CEILING_DIRECTORIES="$SOURCE_DIR/.." |
| 36 | export GIT_CEILING_DIRECTORIES |
| 37 | |
| 38 | if test -z "$GIT_VERSION" |
| 39 | then |
| 40 | # First see if there is a version file (included in release tarballs), |
| 41 | # then try git-describe, then default. |
| 42 | if test -f "$SOURCE_DIR"/version |
| 43 | then |
| 44 | VN=$(cat "$SOURCE_DIR"/version) || VN="$DEF_VER" |
| 45 | elif { |
| 46 | test -d "$SOURCE_DIR/.git" || |
| 47 | test -d "${GIT_DIR:-.git}" || |
| 48 | test -f "$SOURCE_DIR"/.git; |
| 49 | } && |
| 50 | VN=$(git -C "$SOURCE_DIR" describe --dirty --match="v[0-9]*" 2>/dev/null) && |
| 51 | case "$VN" in |
| 52 | *$LF*) (exit 1) ;; |
| 53 | esac |
| 54 | then |
| 55 | VN=$(echo "$VN" | sed -e 's/-/./g'); |
| 56 | else |
| 57 | VN="$DEF_VER" |
| 58 | fi |
| 59 | |
| 60 | GIT_VERSION=$(expr "$VN" : v*'\(.*\)') |
| 61 | fi |
| 62 | |
| 63 | if test -z "$GIT_BUILT_FROM_COMMIT" |
| 64 | then |
| 65 | GIT_BUILT_FROM_COMMIT=$(git -C "$SOURCE_DIR" rev-parse -q --verify HEAD 2>/dev/null) |
| 66 | fi |
| 67 | |
| 68 | if test -z "$GIT_DATE" |
| 69 | then |
| 70 | GIT_DATE=$(git -C "$SOURCE_DIR" show --quiet --format='%as' 2>/dev/null) |
| 71 | fi |
| 72 | |
| 73 | if test -z "$GIT_USER_AGENT" |
| 74 | then |
| 75 | GIT_USER_AGENT="git/$GIT_VERSION" |
| 76 | fi |
| 77 | |
| 78 | # While released Git versions only have three numbers, development builds also |
| 79 | # have a fourth number that corresponds to the number of patches since the last |
| 80 | # release. |
| 81 | read GIT_MAJOR_VERSION GIT_MINOR_VERSION GIT_MICRO_VERSION GIT_PATCH_LEVEL trailing <<EOF |
| 82 | $(echo "$GIT_VERSION" 0 0 0 0 | tr '.a-zA-Z-' ' ') |
| 83 | EOF |
| 84 | |
| 85 | REPLACED=$(printf "%s\n" "$INPUT" | sed -e "s|@GIT_VERSION@|$GIT_VERSION|" \ |
| 86 | -e "s|@GIT_MAJOR_VERSION@|$GIT_MAJOR_VERSION|" \ |
| 87 | -e "s|@GIT_MINOR_VERSION@|$GIT_MINOR_VERSION|" \ |
| 88 | -e "s|@GIT_MICRO_VERSION@|$GIT_MICRO_VERSION|" \ |
| 89 | -e "s|@GIT_PATCH_LEVEL@|$GIT_PATCH_LEVEL|" \ |
| 90 | -e "s|@GIT_BUILT_FROM_COMMIT@|$GIT_BUILT_FROM_COMMIT|" \ |
| 91 | -e "s|@GIT_USER_AGENT@|$GIT_USER_AGENT|" \ |
| 92 | -e "s|@GIT_DATE@|$GIT_DATE|" |
| 93 | ) |
| 94 | |
| 95 | if test -z "$OUTPUT" |
| 96 | then |
| 97 | printf "%s\n" "$REPLACED" |
| 98 | else |
| 99 | printf "%s\n" "$REPLACED" >"$OUTPUT".$$+ |
| 100 | if ! test -f "$OUTPUT" || ! cmp "$OUTPUT".$$+ "$OUTPUT" >/dev/null |
| 101 | then |
| 102 | mv "$OUTPUT".$$+ "$OUTPUT" |
| 103 | else |
| 104 | rm "$OUTPUT".$$+ |
| 105 | fi |
| 106 | fi |