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 "$cdup"
  87        then
  88                case "$cdup" in
  89                /*)
  90                        # Not quite the same as if we did "cd -P '$cdup'" when
  91                        # $cdup contains ".." after symlink path components.
  92                        # Don't fix that case at least until Git switches to
  93                        # "cd -P" across the board.
  94                        phys="$cdup"
  95                        ;;
  96                ..|../*|*/..|*/../*)
  97                        # Interpret $cdup relative to the physical, not logical, cwd.
  98                        # Probably /bin/pwd is more portable than passing -P to cd or pwd.
  99                        phys="$(unset PWD; /bin/pwd)/$cdup"
 100                        ;;
 101                *)
 102                        # There's no "..", so no need to make things absolute.
 103                        phys="$cdup"
 104                        ;;
 105                esac
 106
 107                cd "$phys" || {
 108                        echo >&2 "Cannot chdir to $phys, the toplevel of the working tree"
 109                        exit 1
 110                }
 111        fi
 112}
 113
 114require_work_tree () {
 115        test $(git rev-parse --is-inside-work-tree) = true ||
 116        die "fatal: $0 cannot be used without a working tree."
 117}
 118
 119get_author_ident_from_commit () {
 120        pick_author_script='
 121        /^author /{
 122                s/'\''/'\''\\'\'\''/g
 123                h
 124                s/^author \([^<]*\) <[^>]*> .*$/\1/
 125                s/'\''/'\''\'\'\''/g
 126                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 127
 128                g
 129                s/^author [^<]* <\([^>]*\)> .*$/\1/
 130                s/'\''/'\''\'\'\''/g
 131                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 132
 133                g
 134                s/^author [^<]* <[^>]*> \(.*\)$/\1/
 135                s/'\''/'\''\'\'\''/g
 136                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 137
 138                q
 139        }
 140        '
 141        encoding=$(git config i18n.commitencoding || echo UTF-8)
 142        git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 143        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 144}
 145
 146# Make sure we are in a valid repository of a vintage we understand,
 147# if we require to be in a git repository.
 148if test -z "$NONGIT_OK"
 149then
 150        GIT_DIR=$(git rev-parse --git-dir) || exit
 151        if [ -z "$SUBDIRECTORY_OK" ]
 152        then
 153                test -z "$(git rev-parse --show-cdup)" || {
 154                        exit=$?
 155                        echo >&2 "You need to run this command from the toplevel of the working tree."
 156                        exit $exit
 157                }
 158        fi
 159        test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 160                echo >&2 "Unable to determine absolute path of git directory"
 161                exit 1
 162        }
 163        : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 164fi
 165
 166# Fix some commands on Windows
 167case $(uname -s) in
 168*MINGW*)
 169        # Windows has its own (incompatible) sort and find
 170        sort () {
 171                /usr/bin/sort "$@"
 172        }
 173        find () {
 174                /usr/bin/find "$@"
 175        }
 176        ;;
 177esac