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="--keep-dashdash"
  27
  28        eval "$(
  29                echo "$OPTIONS_SPEC" |
  30                        git rev-parse --parseopt $parseopt_extra -- "$@" ||
  31                echo exit $?
  32        )"
  33else
  34        usage() {
  35                die "Usage: $0 $USAGE"
  36        }
  37
  38        if [ -z "$LONG_USAGE" ]
  39        then
  40                LONG_USAGE="Usage: $0 $USAGE"
  41        else
  42                LONG_USAGE="Usage: $0 $USAGE
  43
  44$LONG_USAGE"
  45        fi
  46
  47        case "$1" in
  48                -h|--h|--he|--hel|--help)
  49                echo "$LONG_USAGE"
  50                exit
  51        esac
  52fi
  53
  54set_reflog_action() {
  55        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  56        then
  57                GIT_REFLOG_ACTION="$*"
  58                export GIT_REFLOG_ACTION
  59        fi
  60}
  61
  62git_editor() {
  63        : "${GIT_EDITOR:=$(git config core.editor)}"
  64        : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  65        case "$GIT_EDITOR,$TERM" in
  66        ,dumb)
  67                echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  68                echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  69                echo >&2 "Please set one of these variables to an appropriate"
  70                echo >&2 "editor or run $0 with options that will not cause an"
  71                echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
  72                exit 1
  73                ;;
  74        esac
  75        eval "${GIT_EDITOR:=vi}" '"$@"'
  76}
  77
  78is_bare_repository () {
  79        git rev-parse --is-bare-repository
  80}
  81
  82cd_to_toplevel () {
  83        cdup=$(git rev-parse --show-cdup)
  84        if test ! -z "$cdup"
  85        then
  86                cd "$cdup" || {
  87                        echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
  88                        exit 1
  89                }
  90        fi
  91}
  92
  93require_work_tree () {
  94        test $(git rev-parse --is-inside-work-tree) = true ||
  95        die "fatal: $0 cannot be used without a working tree."
  96}
  97
  98get_author_ident_from_commit () {
  99        pick_author_script='
 100        /^author /{
 101                s/'\''/'\''\\'\'\''/g
 102                h
 103                s/^author \([^<]*\) <[^>]*> .*$/\1/
 104                s/'\''/'\''\'\'\''/g
 105                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 106
 107                g
 108                s/^author [^<]* <\([^>]*\)> .*$/\1/
 109                s/'\''/'\''\'\'\''/g
 110                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 111
 112                g
 113                s/^author [^<]* <[^>]*> \(.*\)$/\1/
 114                s/'\''/'\''\'\'\''/g
 115                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 116
 117                q
 118        }
 119        '
 120        encoding=$(git config i18n.commitencoding || echo UTF-8)
 121        git show -s --pretty=raw --encoding="$encoding" "$1" |
 122        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 123}
 124
 125# Make sure we are in a valid repository of a vintage we understand,
 126# if we require to be in a git repository.
 127if test -z "$NONGIT_OK"
 128then
 129        if [ -z "$SUBDIRECTORY_OK" ]
 130        then
 131                : ${GIT_DIR=.git}
 132                test -z "$(git rev-parse --show-cdup)" || {
 133                        exit=$?
 134                        echo >&2 "You need to run this command from the toplevel of the working tree."
 135                        exit $exit
 136                }
 137        else
 138                GIT_DIR=$(git rev-parse --git-dir) || {
 139                    exit=$?
 140                    echo >&2 "Failed to find a valid git directory."
 141                    exit $exit
 142                }
 143        fi
 144        test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 145                echo >&2 "Unable to determine absolute path of git directory"
 146                exit 1
 147        }
 148        : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 149fi