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
  19usage() {
  20        die "Usage: $0 $USAGE"
  21}
  22
  23set_reflog_action() {
  24        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  25        then
  26                GIT_REFLOG_ACTION="$*"
  27                export GIT_REFLOG_ACTION
  28        fi
  29}
  30
  31git_editor() {
  32        : "${GIT_EDITOR:=$(git config core.editor)}"
  33        : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  34        case "$GIT_EDITOR,$TERM" in
  35        ,dumb)
  36                echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  37                echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  38                echo >&2 "Please set one of these variables to an appropriate"
  39                echo >&2 "editor or run $0 with options that will not cause an"
  40                echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
  41                exit 1
  42                ;;
  43        esac
  44        eval "${GIT_EDITOR:=vi}" '"$@"'
  45}
  46
  47is_bare_repository () {
  48        git rev-parse --is-bare-repository
  49}
  50
  51cd_to_toplevel () {
  52        cdup=$(git rev-parse --show-cdup)
  53        if test ! -z "$cdup"
  54        then
  55                cd "$cdup" || {
  56                        echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
  57                        exit 1
  58                }
  59        fi
  60}
  61
  62require_work_tree () {
  63        test $(git rev-parse --is-inside-work-tree) = true ||
  64        die "fatal: $0 cannot be used without a working tree."
  65}
  66
  67get_author_ident_from_commit () {
  68        pick_author_script='
  69        /^author /{
  70                s/'\''/'\''\\'\'\''/g
  71                h
  72                s/^author \([^<]*\) <[^>]*> .*$/\1/
  73                s/'\''/'\''\'\'\''/g
  74                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
  75
  76                g
  77                s/^author [^<]* <\([^>]*\)> .*$/\1/
  78                s/'\''/'\''\'\'\''/g
  79                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
  80
  81                g
  82                s/^author [^<]* <[^>]*> \(.*\)$/\1/
  83                s/'\''/'\''\'\'\''/g
  84                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
  85
  86                q
  87        }
  88        '
  89        encoding=$(git config i18n.commitencoding || echo UTF-8)
  90        git show -s --pretty=raw --encoding="$encoding" "$1" |
  91        LANG=C LC_ALL=C sed -ne "$pick_author_script"
  92}
  93
  94if [ -z "$LONG_USAGE" ]
  95then
  96        LONG_USAGE="Usage: $0 $USAGE"
  97else
  98        LONG_USAGE="Usage: $0 $USAGE
  99
 100$LONG_USAGE"
 101fi
 102
 103case "$1" in
 104        -h|--h|--he|--hel|--help)
 105        echo "$LONG_USAGE"
 106        exit
 107esac
 108
 109# Make sure we are in a valid repository of a vintage we understand.
 110if [ -z "$SUBDIRECTORY_OK" ]
 111then
 112        : ${GIT_DIR=.git}
 113        test -z "$(git rev-parse --show-cdup)" || {
 114                exit=$?
 115                echo >&2 "You need to run this command from the toplevel of the working tree."
 116                exit $exit
 117        }
 118else
 119        GIT_DIR=$(git rev-parse --git-dir) || {
 120            exit=$?
 121            echo >&2 "Failed to find a valid git directory."
 122            exit $exit
 123        }
 124fi
 125
 126test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 127    echo >&2 "Unable to determine absolute path of git directory"
 128    exit 1
 129}
 130
 131: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}