Andrew's git - gitweb.git/blob

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