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
  14git_broken_path_fix () {
  15        case ":$PATH:" in
  16        *:$1:*) : ok ;;
  17        *)
  18                PATH=$(
  19                        SANE_TOOL_PATH="$1"
  20                        IFS=: path= sep=
  21                        set x $PATH
  22                        shift
  23                        for elem
  24                        do
  25                                case "$SANE_TOOL_PATH:$elem" in
  26                                (?*:/bin | ?*:/usr/bin)
  27                                        path="$path$sep$SANE_TOOL_PATH"
  28                                        sep=:
  29                                        SANE_TOOL_PATH=
  30                                esac
  31                                path="$path$sep$elem"
  32                                sep=:
  33                        done
  34                        echo "$path"
  35                )
  36                ;;
  37        esac
  38}
  39
  40# @@BROKEN_PATH_FIX@@
  41
  42die () {
  43        die_with_status 1 "$@"
  44}
  45
  46die_with_status () {
  47        status=$1
  48        shift
  49        echo >&2 "$*"
  50        exit "$status"
  51}
  52
  53GIT_QUIET=
  54
  55say () {
  56        if test -z "$GIT_QUIET"
  57        then
  58                printf '%s\n' "$*"
  59        fi
  60}
  61
  62if test -n "$OPTIONS_SPEC"; then
  63        usage() {
  64                "$0" -h
  65                exit 1
  66        }
  67
  68        parseopt_extra=
  69        [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  70                parseopt_extra="--keep-dashdash"
  71
  72        eval "$(
  73                echo "$OPTIONS_SPEC" |
  74                        git rev-parse --parseopt $parseopt_extra -- "$@" ||
  75                echo exit $?
  76        )"
  77else
  78        dashless=$(basename "$0" | sed -e 's/-/ /')
  79        usage() {
  80                die "Usage: $dashless $USAGE"
  81        }
  82
  83        if [ -z "$LONG_USAGE" ]
  84        then
  85                LONG_USAGE="Usage: $dashless $USAGE"
  86        else
  87                LONG_USAGE="Usage: $dashless $USAGE
  88
  89$LONG_USAGE"
  90        fi
  91
  92        case "$1" in
  93                -h)
  94                echo "$LONG_USAGE"
  95                exit
  96        esac
  97fi
  98
  99set_reflog_action() {
 100        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
 101        then
 102                GIT_REFLOG_ACTION="$*"
 103                export GIT_REFLOG_ACTION
 104        fi
 105}
 106
 107git_editor() {
 108        if test -z "${GIT_EDITOR:+set}"
 109        then
 110                GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
 111        fi
 112
 113        eval "$GIT_EDITOR" '"$@"'
 114}
 115
 116git_pager() {
 117        if test -t 1
 118        then
 119                GIT_PAGER=$(git var GIT_PAGER)
 120        else
 121                GIT_PAGER=cat
 122        fi
 123        : ${LESS=-FRSX}
 124        export LESS
 125
 126        eval "$GIT_PAGER" '"$@"'
 127}
 128
 129sane_grep () {
 130        GREP_OPTIONS= LC_ALL=C grep "$@"
 131}
 132
 133sane_egrep () {
 134        GREP_OPTIONS= LC_ALL=C egrep "$@"
 135}
 136
 137is_bare_repository () {
 138        git rev-parse --is-bare-repository
 139}
 140
 141cd_to_toplevel () {
 142        cdup=$(git rev-parse --show-toplevel) &&
 143        cd "$cdup" || {
 144                echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 145                exit 1
 146        }
 147}
 148
 149require_work_tree_exists () {
 150        if test "z$(git rev-parse --is-bare-repository)" != zfalse
 151        then
 152                die "fatal: $0 cannot be used without a working tree."
 153        fi
 154}
 155
 156require_work_tree () {
 157        test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
 158        die "fatal: $0 cannot be used without a working tree."
 159}
 160
 161require_clean_work_tree () {
 162        git rev-parse --verify HEAD >/dev/null || exit 1
 163        git update-index -q --ignore-submodules --refresh
 164        err=0
 165
 166        if ! git diff-files --quiet --ignore-submodules
 167        then
 168                echo >&2 "Cannot $1: You have unstaged changes."
 169                err=1
 170        fi
 171
 172        if ! git diff-index --cached --quiet --ignore-submodules HEAD --
 173        then
 174                if [ $err = 0 ]
 175                then
 176                    echo >&2 "Cannot $1: Your index contains uncommitted changes."
 177                else
 178                    echo >&2 "Additionally, your index contains uncommitted changes."
 179                fi
 180                err=1
 181        fi
 182
 183        if [ $err = 1 ]
 184        then
 185                test -n "$2" && echo >&2 "$2"
 186                exit 1
 187        fi
 188}
 189
 190get_author_ident_from_commit () {
 191        pick_author_script='
 192        /^author /{
 193                s/'\''/'\''\\'\'\''/g
 194                h
 195                s/^author \([^<]*\) <[^>]*> .*$/\1/
 196                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 197
 198                g
 199                s/^author [^<]* <\([^>]*\)> .*$/\1/
 200                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 201
 202                g
 203                s/^author [^<]* <[^>]*> \(.*\)$/@\1/
 204                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 205
 206                q
 207        }
 208        '
 209        encoding=$(git config i18n.commitencoding || echo UTF-8)
 210        git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 211        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 212}
 213
 214# Clear repo-local GIT_* environment variables. Useful when switching to
 215# another repository (e.g. when entering a submodule). See also the env
 216# list in git_connect()
 217clear_local_git_env() {
 218        unset $(git rev-parse --local-env-vars)
 219}
 220
 221
 222# Platform specific tweaks to work around some commands
 223case $(uname -s) in
 224*MINGW*)
 225        # Windows has its own (incompatible) sort and find
 226        sort () {
 227                /usr/bin/sort "$@"
 228        }
 229        find () {
 230                /usr/bin/find "$@"
 231        }
 232        # git sees Windows-style pwd
 233        pwd () {
 234                builtin pwd -W
 235        }
 236        is_absolute_path () {
 237                case "$1" in
 238                [/\\]* | [A-Za-z]:*)
 239                        return 0 ;;
 240                esac
 241                return 1
 242        }
 243        ;;
 244*)
 245        is_absolute_path () {
 246                case "$1" in
 247                /*)
 248                        return 0 ;;
 249                esac
 250                return 1
 251        }
 252esac
 253
 254# Make sure we are in a valid repository of a vintage we understand,
 255# if we require to be in a git repository.
 256if test -z "$NONGIT_OK"
 257then
 258        GIT_DIR=$(git rev-parse --git-dir) || exit
 259        if [ -z "$SUBDIRECTORY_OK" ]
 260        then
 261                test -z "$(git rev-parse --show-cdup)" || {
 262                        exit=$?
 263                        echo >&2 "You need to run this command from the toplevel of the working tree."
 264                        exit $exit
 265                }
 266        fi
 267        test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 268                echo >&2 "Unable to determine absolute path of git directory"
 269                exit 1
 270        }
 271        : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 272fi