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                 printf '%s\n' "$*"
  53         fi
  54 }
  55
  56 if test -n "$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 $?
  70         )"
  71 else
  72         dashless=$(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
  91 fi
  92
  93 set_reflog_action() {
  94         if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  95         then
  96                 GIT_REFLOG_ACTION="$*"
  97                 export GIT_REFLOG_ACTION
  98         fi
  99 }
 100
 101 git_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" '"$@"'
 108 }
 109
 110 git_pager() {
 111         if test -t 1
 112         then
 113                 GIT_PAGER=$(git var GIT_PAGER)
 114         else
 115                 GIT_PAGER=cat
 116         fi
 117         : ${LESS=-FRSX}
 118         export LESS
 119
 120         eval "$GIT_PAGER" '"$@"'
 121 }
 122
 123 sane_grep () {
 124         GREP_OPTIONS= LC_ALL=C grep "$@"
 125 }
 126
 127 sane_egrep () {
 128         GREP_OPTIONS= LC_ALL=C egrep "$@"
 129 }
 130
 131 is_bare_repository () {
 132         git rev-parse --is-bare-repository
 133 }
 134
 135 cd_to_toplevel () {
 136         cdup=$(git rev-parse --show-toplevel) &&
 137         cd "$cdup" || {
 138                 echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 139                 exit 1
 140         }
 141 }
 142
 143 require_work_tree () {
 144         test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
 145         die "fatal: $0 cannot be used without a working tree."
 146 }
 147
 148 get_author_ident_from_commit () {
 149         pick_author_script='
 150         /^author /{
 151                 s/'\''/'\''\\'\'\''/g
 152                 h
 153                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 154                 s/'\''/'\''\'\'\''/g
 155                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 156
 157                 g
 158                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 159                 s/'\''/'\''\'\'\''/g
 160                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 161
 162                 g
 163                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 164                 s/'\''/'\''\'\'\''/g
 165                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 166
 167                 q
 168         }
 169         '
 170         encoding=$(git config i18n.commitencoding || echo UTF-8)
 171         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 172         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 173 }
 174
 175 # Clear repo-local GIT_* environment variables. Useful when switching to
 176 # another repository (e.g. when entering a submodule). See also the env
 177 # list in git_connect()
 178 clear_local_git_env() {
 179         unset $(git rev-parse --local-env-vars)
 180 }
 181
 182 # Make sure we are in a valid repository of a vintage we understand,
 183 # if we require to be in a git repository.
 184 if test -z "$NONGIT_OK"
 185 then
 186         GIT_DIR=$(git rev-parse --git-dir) || exit
 187         if [ -z "$SUBDIRECTORY_OK" ]
 188         then
 189                 test -z "$(git rev-parse --show-cdup)" || {
 190                         exit=$?
 191                         echo >&2 "You need to run this command from the toplevel of the working tree."
 192                         exit $exit
 193                 }
 194         fi
 195         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 196                 echo >&2 "Unable to determine absolute path of git directory"
 197                 exit 1
 198         }
 199         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 200 fi
 201
 202 # Fix some commands on Windows
 203 case $(uname -s) in
 204 *MINGW*)
 205         # Windows has its own (incompatible) sort and find
 206         sort () {
 207                 /usr/bin/sort "$@"
 208         }
 209         find () {
 210                 /usr/bin/find "$@"
 211         }
 212         ;;
 213 esac