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                "$0" -h
  22                exit 1
  23        }
  24
  25        parseopt_extra=
  26        [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  27                parseopt_extra="--keep-dashdash"
  28
  29        eval "$(
  30                echo "$OPTIONS_SPEC" |
  31                        git rev-parse --parseopt $parseopt_extra -- "$@" ||
  32                echo exit $?
  33        )"
  34else
  35        usage() {
  36                die "Usage: $0 $USAGE"
  37        }
  38
  39        if [ -z "$LONG_USAGE" ]
  40        then
  41                LONG_USAGE="Usage: $0 $USAGE"
  42        else
  43                LONG_USAGE="Usage: $0 $USAGE
  44
  45$LONG_USAGE"
  46        fi
  47
  48        case "$1" in
  49                -h|--h|--he|--hel|--help)
  50                echo "$LONG_USAGE"
  51                exit
  52        esac
  53fi
  54
  55set_reflog_action() {
  56        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  57        then
  58                GIT_REFLOG_ACTION="$*"
  59                export GIT_REFLOG_ACTION
  60        fi
  61}
  62
  63git_editor() {
  64        : "${GIT_EDITOR:=$(git config core.editor)}"
  65        : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  66        case "$GIT_EDITOR,$TERM" in
  67        ,dumb)
  68                echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  69                echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  70                echo >&2 "Please set one of these variables to an appropriate"
  71                echo >&2 "editor or run $0 with options that will not cause an"
  72                echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
  73                exit 1
  74                ;;
  75        esac
  76        eval "${GIT_EDITOR:=vi}" '"$@"'
  77}
  78
  79is_bare_repository () {
  80        git rev-parse --is-bare-repository
  81}
  82
  83cd_to_toplevel () {
  84        cdup=$(git rev-parse --show-cdup)
  85        if test ! -z "$cdup"
  86        then
  87                cd "$cdup" || {
  88                        echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
  89                        exit 1
  90                }
  91        fi
  92}
  93
  94require_work_tree () {
  95        test $(git rev-parse --is-inside-work-tree) = true ||
  96        die "fatal: $0 cannot be used without a working tree."
  97}
  98
  99get_author_ident_from_commit () {
 100        pick_author_script='
 101        /^author /{
 102                s/'\''/'\''\\'\'\''/g
 103                h
 104                s/^author \([^<]*\) <[^>]*> .*$/\1/
 105                s/'\''/'\''\'\'\''/g
 106                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 107
 108                g
 109                s/^author [^<]* <\([^>]*\)> .*$/\1/
 110                s/'\''/'\''\'\'\''/g
 111                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 112
 113                g
 114                s/^author [^<]* <[^>]*> \(.*\)$/\1/
 115                s/'\''/'\''\'\'\''/g
 116                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 117
 118                q
 119        }
 120        '
 121        encoding=$(git config i18n.commitencoding || echo UTF-8)
 122        git show -s --pretty=raw --encoding="$encoding" "$1" |
 123        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 124}
 125
 126# Make sure we are in a valid repository of a vintage we understand,
 127# if we require to be in a git repository.
 128if test -z "$NONGIT_OK"
 129then
 130        if [ -z "$SUBDIRECTORY_OK" ]
 131        then
 132                : ${GIT_DIR=.git}
 133                test -z "$(git rev-parse --show-cdup)" || {
 134                        exit=$?
 135                        echo >&2 "You need to run this command from the toplevel of the working tree."
 136                        exit $exit
 137                }
 138        else
 139                GIT_DIR=$(git rev-parse --git-dir) || {
 140                    exit=$?
 141                    echo >&2 "Failed to find a valid git directory."
 142                    exit $exit
 143                }
 144        fi
 145        test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 146                echo >&2 "Unable to determine absolute path of git directory"
 147                exit 1
 148        }
 149        : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 150fi