Andrew's git / gitweb.git /
f1c4839a9fe2883f1106d9f9ee209fe4b53b3720
   1#!/bin/sh
   2#
   3# This is included in commands that either have to be run from the toplevel
   4# of the repository, or with GIT_DIR environment variable properly.
   5# If the GIT_DIR does not look like the right correct git-repository,
   6# it dies.
   7
   8# Having this variable in your environment would break scripts because
   9# you would cause "cd" to be taken to unexpected places.  If you
  10# like CDPATH, define it for your interactive shell sessions without
  11# exporting it.
  12unset CDPATH
  13
  14die() {
  15        echo >&2 "$@"
  16        exit 1
  17}
  18
  19if test -n "$OPTIONS_SPEC"; then
  20        usage() {
  21                exec "$0" -h
  22        }
  23
  24        [ -n "$OPTIONS_KEEPDASHDASH" ] && parseopt_extra="--keep-dashdash"
  25        parsed=$(
  26                echo "$OPTIONS_SPEC" |
  27                git rev-parse --parseopt $parseopt_extra -- "$@"
  28        ) &&
  29        eval "$parsed" || exit
  30else
  31        usage() {
  32                die "Usage: $0 $USAGE"
  33        }
  34
  35        if [ -z "$LONG_USAGE" ]
  36        then
  37                LONG_USAGE="Usage: $0 $USAGE"
  38        else
  39                LONG_USAGE="Usage: $0 $USAGE
  40
  41$LONG_USAGE"
  42        fi
  43
  44        case "$1" in
  45                -h|--h|--he|--hel|--help)
  46                echo "$LONG_USAGE"
  47                exit
  48        esac
  49fi
  50
  51set_reflog_action() {
  52        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  53        then
  54                GIT_REFLOG_ACTION="$*"
  55                export GIT_REFLOG_ACTION
  56        fi
  57}
  58
  59git_editor() {
  60        : "${GIT_EDITOR:=$(git config core.editor)}"
  61        : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  62        case "$GIT_EDITOR,$TERM" in
  63        ,dumb)
  64                echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  65                echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  66                echo >&2 "Please set one of these variables to an appropriate"
  67                echo >&2 "editor or run $0 with options that will not cause an"
  68                echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
  69                exit 1
  70                ;;
  71        esac
  72        eval "${GIT_EDITOR:=vi}" '"$@"'
  73}
  74
  75is_bare_repository () {
  76        git rev-parse --is-bare-repository
  77}
  78
  79cd_to_toplevel () {
  80        cdup=$(git rev-parse --show-cdup)
  81        if test ! -z "$cdup"
  82        then
  83                cd "$cdup" || {
  84                        echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
  85                        exit 1
  86                }
  87        fi
  88}
  89
  90require_work_tree () {
  91        test $(git rev-parse --is-inside-work-tree) = true ||
  92        die "fatal: $0 cannot be used without a working tree."
  93}
  94
  95get_author_ident_from_commit () {
  96        pick_author_script='
  97        /^author /{
  98                s/'\''/'\''\\'\'\''/g
  99                h
 100                s/^author \([^<]*\) <[^>]*> .*$/\1/
 101                s/'\''/'\''\'\'\''/g
 102                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 103
 104                g
 105                s/^author [^<]* <\([^>]*\)> .*$/\1/
 106                s/'\''/'\''\'\'\''/g
 107                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 108
 109                g
 110                s/^author [^<]* <[^>]*> \(.*\)$/\1/
 111                s/'\''/'\''\'\'\''/g
 112                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 113
 114                q
 115        }
 116        '
 117        encoding=$(git config i18n.commitencoding || echo UTF-8)
 118        git show -s --pretty=raw --encoding="$encoding" "$1" |
 119        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 120}
 121
 122# Make sure we are in a valid repository of a vintage we understand.
 123if [ -z "$SUBDIRECTORY_OK" ]
 124then
 125        : ${GIT_DIR=.git}
 126        test -z "$(git rev-parse --show-cdup)" || {
 127                exit=$?
 128                echo >&2 "You need to run this command from the toplevel of the working tree."
 129                exit $exit
 130        }
 131else
 132        GIT_DIR=$(git rev-parse --git-dir) || {
 133            exit=$?
 134            echo >&2 "Failed to find a valid git directory."
 135            exit $exit
 136        }
 137fi
 138
 139test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 140    echo >&2 "Unable to determine absolute path of git directory"
 141    exit 1
 142}
 143
 144: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}