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 $?
  33        )"
  34else
  35        dashless=$(basename "$0" | sed -e 's/-/ /')
  36        usage() {
  37                die "Usage: $dashless $USAGE"
  38        }
  39
  40        if [ -z "$LONG_USAGE" ]
  41        then
  42                LONG_USAGE="Usage: $dashless $USAGE"
  43        else
  44                LONG_USAGE="Usage: $dashless $USAGE
  45
  46$LONG_USAGE"
  47        fi
  48
  49        case "$1" in
  50                -h|--h|--he|--hel|--help)
  51                echo "$LONG_USAGE"
  52                exit
  53        esac
  54fi
  55
  56set_reflog_action() {
  57        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  58        then
  59                GIT_REFLOG_ACTION="$*"
  60                export GIT_REFLOG_ACTION
  61        fi
  62}
  63
  64git_editor() {
  65        : "${GIT_EDITOR:=$(git config core.editor)}"
  66        : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  67        case "$GIT_EDITOR,$TERM" in
  68        ,dumb)
  69                echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  70                echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  71                echo >&2 "Please set one of these variables to an appropriate"
  72                echo >&2 "editor or run $0 with options that will not cause an"
  73                echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
  74                exit 1
  75                ;;
  76        esac
  77        eval "${GIT_EDITOR:=vi}" '"$@"'
  78}
  79
  80is_bare_repository () {
  81        git rev-parse --is-bare-repository
  82}
  83
  84cd_to_toplevel () {
  85        cdup=$(git rev-parse --show-cdup)
  86        if test ! -z "$cdup"
  87        then
  88                # The "-P" option says to follow "physical" directory
  89                # structure instead of following symbolic links.  When cdup is
  90                # "../", this means following the ".." entry in the current
  91                # directory instead textually removing a symlink path element
  92                # from the PWD shell variable.  The "-P" behavior is more
  93                # consistent with the C-style chdir used by most of Git.
  94                cd -P "$cdup" || {
  95                        echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
  96                        exit 1
  97                }
  98        fi
  99}
 100
 101require_work_tree () {
 102        test $(git rev-parse --is-inside-work-tree) = true ||
 103        die "fatal: $0 cannot be used without a working tree."
 104}
 105
 106get_author_ident_from_commit () {
 107        pick_author_script='
 108        /^author /{
 109                s/'\''/'\''\\'\'\''/g
 110                h
 111                s/^author \([^<]*\) <[^>]*> .*$/\1/
 112                s/'\''/'\''\'\'\''/g
 113                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 114
 115                g
 116                s/^author [^<]* <\([^>]*\)> .*$/\1/
 117                s/'\''/'\''\'\'\''/g
 118                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 119
 120                g
 121                s/^author [^<]* <[^>]*> \(.*\)$/\1/
 122                s/'\''/'\''\'\'\''/g
 123                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 124
 125                q
 126        }
 127        '
 128        encoding=$(git config i18n.commitencoding || echo UTF-8)
 129        git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 130        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 131}
 132
 133# Make sure we are in a valid repository of a vintage we understand,
 134# if we require to be in a git repository.
 135if test -z "$NONGIT_OK"
 136then
 137        GIT_DIR=$(git rev-parse --git-dir) || exit
 138        if [ -z "$SUBDIRECTORY_OK" ]
 139        then
 140                test -z "$(git rev-parse --show-cdup)" || {
 141                        exit=$?
 142                        echo >&2 "You need to run this command from the toplevel of the working tree."
 143                        exit $exit
 144                }
 145        fi
 146        test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 147                echo >&2 "Unable to determine absolute path of git directory"
 148                exit 1
 149        }
 150        : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 151fi
 152
 153# Fix some commands on Windows
 154case $(uname -s) in
 155*MINGW*)
 156        # Windows has its own (incompatible) sort and find
 157        sort () {
 158                /usr/bin/sort "$@"
 159        }
 160        find () {
 161                /usr/bin/find "$@"
 162        }
 163        ;;
 164esac