git-sh-setup.shon commit Merge branch 'jn/maint-svn-fe' (b720c75)
   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        echo >&2 "$@"
  44        exit 1
  45}
  46
  47GIT_QUIET=
  48
  49say () {
  50        if test -z "$GIT_QUIET"
  51        then
  52                printf '%s\n' "$*"
  53        fi
  54}
  55
  56if test -n "$OPTIONS_SPEC"; then
  57        usage() {
  58                "$0" -h
  59                exit 1
  60        }
  61
  62        parseopt_extra=
  63        [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  64                parseopt_extra="--keep-dashdash"
  65
  66        eval "$(
  67                echo "$OPTIONS_SPEC" |
  68                        git rev-parse --parseopt $parseopt_extra -- "$@" ||
  69                echo exit $?
  70        )"
  71else
  72        dashless=$(basename "$0" | sed -e 's/-/ /')
  73        usage() {
  74                die "Usage: $dashless $USAGE"
  75        }
  76
  77        if [ -z "$LONG_USAGE" ]
  78        then
  79                LONG_USAGE="Usage: $dashless $USAGE"
  80        else
  81                LONG_USAGE="Usage: $dashless $USAGE
  82
  83$LONG_USAGE"
  84        fi
  85
  86        case "$1" in
  87                -h|--h|--he|--hel|--help)
  88                echo "$LONG_USAGE"
  89                exit
  90        esac
  91fi
  92
  93set_reflog_action() {
  94        if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  95        then
  96                GIT_REFLOG_ACTION="$*"
  97                export GIT_REFLOG_ACTION
  98        fi
  99}
 100
 101git_editor() {
 102        if test -z "${GIT_EDITOR:+set}"
 103        then
 104                GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
 105        fi
 106
 107        eval "$GIT_EDITOR" '"$@"'
 108}
 109
 110git_pager() {
 111        if test -t 1
 112        then
 113                GIT_PAGER=$(git var GIT_PAGER)
 114        else
 115                GIT_PAGER=cat
 116        fi
 117        : ${LESS=-FRSX}
 118        export LESS
 119
 120        eval "$GIT_PAGER" '"$@"'
 121}
 122
 123sane_grep () {
 124        GREP_OPTIONS= LC_ALL=C grep "$@"
 125}
 126
 127sane_egrep () {
 128        GREP_OPTIONS= LC_ALL=C egrep "$@"
 129}
 130
 131is_bare_repository () {
 132        git rev-parse --is-bare-repository
 133}
 134
 135cd_to_toplevel () {
 136        cdup=$(git rev-parse --show-toplevel) &&
 137        cd "$cdup" || {
 138                echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 139                exit 1
 140        }
 141}
 142
 143require_work_tree () {
 144        test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
 145        die "fatal: $0 cannot be used without a working tree."
 146}
 147
 148require_clean_work_tree () {
 149        git rev-parse --verify HEAD >/dev/null || exit 1
 150        git update-index -q --ignore-submodules --refresh
 151        err=0
 152
 153        if ! git diff-files --quiet --ignore-submodules
 154        then
 155                echo >&2 "Cannot $1: You have unstaged changes."
 156                err=1
 157        fi
 158
 159        if ! git diff-index --cached --quiet --ignore-submodules HEAD --
 160        then
 161                if [ $err = 0 ]
 162                then
 163                    echo >&2 "Cannot $1: Your index contains uncommitted changes."
 164                else
 165                    echo >&2 "Additionally, your index contains uncommitted changes."
 166                fi
 167                err=1
 168        fi
 169
 170        if [ $err = 1 ]
 171        then
 172                test -n "$2" && echo >&2 "$2"
 173                exit 1
 174        fi
 175}
 176
 177get_author_ident_from_commit () {
 178        pick_author_script='
 179        /^author /{
 180                s/'\''/'\''\\'\'\''/g
 181                h
 182                s/^author \([^<]*\) <[^>]*> .*$/\1/
 183                s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 184
 185                g
 186                s/^author [^<]* <\([^>]*\)> .*$/\1/
 187                s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 188
 189                g
 190                s/^author [^<]* <[^>]*> \(.*\)$/\1/
 191                s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 192
 193                q
 194        }
 195        '
 196        encoding=$(git config i18n.commitencoding || echo UTF-8)
 197        git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 198        LANG=C LC_ALL=C sed -ne "$pick_author_script"
 199}
 200
 201# Clear repo-local GIT_* environment variables. Useful when switching to
 202# another repository (e.g. when entering a submodule). See also the env
 203# list in git_connect()
 204clear_local_git_env() {
 205        unset $(git rev-parse --local-env-vars)
 206}
 207
 208# Make sure we are in a valid repository of a vintage we understand,
 209# if we require to be in a git repository.
 210if test -z "$NONGIT_OK"
 211then
 212        GIT_DIR=$(git rev-parse --git-dir) || exit
 213        if [ -z "$SUBDIRECTORY_OK" ]
 214        then
 215                test -z "$(git rev-parse --show-cdup)" || {
 216                        exit=$?
 217                        echo >&2 "You need to run this command from the toplevel of the working tree."
 218                        exit $exit
 219                }
 220        fi
 221        test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 222                echo >&2 "Unable to determine absolute path of git directory"
 223                exit 1
 224        }
 225        : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 226fi
 227
 228# Fix some commands on Windows
 229case $(uname -s) in
 230*MINGW*)
 231        # Windows has its own (incompatible) sort and find
 232        sort () {
 233                /usr/bin/sort "$@"
 234        }
 235        find () {
 236                /usr/bin/find "$@"
 237        }
 238        is_absolute_path () {
 239                case "$1" in
 240                [/\\]* | [A-Za-z]:*)
 241                        return 0 ;;
 242                esac
 243                return 1
 244        }
 245        ;;
 246*)
 247        is_absolute_path () {
 248                case "$1" in
 249                /*)
 250                        return 0 ;;
 251                esac
 252                return 1
 253        }
 254esac