git-sh-setup.sh

   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.
  12 unset CDPATH
  13
  14 git_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
  42 die() {
  43         echo >&2 "$@"
  44         exit 1
  45 }
  46
  47 GIT_QUIET=
  48
  49 say () {
  50         if test -z "$GIT_QUIET"
  51         then
  52                 cat <<EOF
  53 $*
  54 EOF
  55         fi
  56 }
  57
  58 if test -n "$OPTIONS_SPEC"; then
  59         usage() {
  60                 "$0" -h
  61                 exit 1
  62         }
  63
  64         parseopt_extra=
  65         [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  66                 parseopt_extra="--keep-dashdash"
  67
  68         eval "$(
  69                 echo "$OPTIONS_SPEC" |
  70                         git rev-parse --parseopt $parseopt_extra -- "$@" ||
  71                 echo exit $?
  72         )"
  73 else
  74         dashless=$(basename "$0" | sed -e 's/-/ /')
  75         usage() {
  76                 die "Usage: $dashless $USAGE"
  77         }
  78
  79         if [ -z "$LONG_USAGE" ]
  80         then
  81                 LONG_USAGE="Usage: $dashless $USAGE"
  82         else
  83                 LONG_USAGE="Usage: $dashless $USAGE
  84
  85 $LONG_USAGE"
  86         fi
  87
  88         case "$1" in
  89                 -h|--h|--he|--hel|--help)
  90                 echo "$LONG_USAGE"
  91                 exit
  92         esac
  93 fi
  94
  95 set_reflog_action() {
  96         if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  97         then
  98                 GIT_REFLOG_ACTION="$*"
  99                 export GIT_REFLOG_ACTION
 100         fi
 101 }
 102
 103 git_editor() {
 104         if test -z "${GIT_EDITOR:+set}"
 105         then
 106                 GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
 107         fi
 108
 109         eval "$GIT_EDITOR" '"$@"'
 110 }
 111
 112 git_pager() {
 113         if test -t 1
 114         then
 115                 GIT_PAGER=$(git var GIT_PAGER)
 116         else
 117                 GIT_PAGER=cat
 118         fi
 119         : ${LESS=-FRSX}
 120         export LESS
 121
 122         eval "$GIT_PAGER" '"$@"'
 123 }
 124
 125 sane_grep () {
 126         GREP_OPTIONS= LC_ALL=C grep "$@"
 127 }
 128
 129 sane_egrep () {
 130         GREP_OPTIONS= LC_ALL=C egrep "$@"
 131 }
 132
 133 is_bare_repository () {
 134         git rev-parse --is-bare-repository
 135 }
 136
 137 cd_to_toplevel () {
 138         cdup=$(git rev-parse --show-toplevel) &&
 139         cd "$cdup" || {
 140                 echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 141                 exit 1
 142         }
 143 }
 144
 145 require_work_tree () {
 146         test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
 147         die "fatal: $0 cannot be used without a working tree."
 148 }
 149
 150 require_clean_work_tree () {
 151         git rev-parse --verify HEAD >/dev/null || exit 1
 152         git update-index -q --ignore-submodules --refresh
 153         err=0
 154
 155         if ! git diff-files --quiet --ignore-submodules
 156         then
 157                 echo >&2 "Cannot $1: You have unstaged changes."
 158                 err=1
 159         fi
 160
 161         if ! git diff-index --cached --quiet --ignore-submodules HEAD --
 162         then
 163                 if [ $err = 0 ]
 164                 then
 165                     echo >&2 "Cannot $1: Your index contains uncommitted changes."
 166                 else
 167                     echo >&2 "Additionally, your index contains uncommitted changes."
 168                 fi
 169                 err=1
 170         fi
 171
 172         if [ $err = 1 ]
 173         then
 174                 test -n "$2" && echo >&2 "$2"
 175                 exit 1
 176         fi
 177 }
 178
 179 get_author_ident_from_commit () {
 180         pick_author_script='
 181         /^author /{
 182                 s/'\''/'\''\\'\'\''/g
 183                 h
 184                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 185                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 186
 187                 g
 188                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 189                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 190
 191                 g
 192                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 193                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 194
 195                 q
 196         }
 197         '
 198         encoding=$(git config i18n.commitencoding || echo UTF-8)
 199         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 200         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 201 }
 202
 203 # Clear repo-local GIT_* environment variables. Useful when switching to
 204 # another repository (e.g. when entering a submodule). See also the env
 205 # list in git_connect()
 206 clear_local_git_env() {
 207         unset $(git rev-parse --local-env-vars)
 208 }
 209
 210 # Make sure we are in a valid repository of a vintage we understand,
 211 # if we require to be in a git repository.
 212 if test -z "$NONGIT_OK"
 213 then
 214         GIT_DIR=$(git rev-parse --git-dir) || exit
 215         if [ -z "$SUBDIRECTORY_OK" ]
 216         then
 217                 test -z "$(git rev-parse --show-cdup)" || {
 218                         exit=$?
 219                         echo >&2 "You need to run this command from the toplevel of the working tree."
 220                         exit $exit
 221                 }
 222         fi
 223         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 224                 echo >&2 "Unable to determine absolute path of git directory"
 225                 exit 1
 226         }
 227         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 228 fi
 229
 230 # Fix some commands on Windows
 231 case $(uname -s) in
 232 *MINGW*)
 233         # Windows has its own (incompatible) sort and find
 234         sort () {
 235                 /usr/bin/sort "$@"
 236         }
 237         find () {
 238                 /usr/bin/find "$@"
 239         }
 240         is_absolute_path () {
 241                 case "$1" in
 242                 [/\\]* | [A-Za-z]:*)
 243                         return 0 ;;
 244                 esac
 245                 return 1
 246         }
 247         ;;
 248 *)
 249         is_absolute_path () {
 250                 case "$1" in
 251                 /*)
 252                         return 0 ;;
 253                 esac
 254                 return 1
 255         }
 256 esac