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" '"$@"'
 108 }
 109
 110 sane_grep () {
 111         GREP_OPTIONS= LC_ALL=C grep "$@"
 112 }
 113
 114 sane_egrep () {
 115         GREP_OPTIONS= LC_ALL=C egrep "$@"
 116 }
 117
 118 is_bare_repository () {
 119         git rev-parse --is-bare-repository
 120 }
 121
 122 cd_to_toplevel () {
 123         cdup=$(git rev-parse --show-cdup)
 124         if test ! -z "$cdup"
 125         then
 126                 # The "-P" option says to follow "physical" directory
 127                 # structure instead of following symbolic links.  When cdup is
 128                 # "../", this means following the ".." entry in the current
 129                 # directory instead textually removing a symlink path element
 130                 # from the PWD shell variable.  The "-P" behavior is more
 131                 # consistent with the C-style chdir used by most of Git.
 132                 cd -P "$cdup" || {
 133                         echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
 134                         exit 1
 135                 }
 136         fi
 137 }
 138
 139 require_work_tree () {
 140         test $(git rev-parse --is-inside-work-tree) = true ||
 141         die "fatal: $0 cannot be used without a working tree."
 142 }
 143
 144 get_author_ident_from_commit () {
 145         pick_author_script='
 146         /^author /{
 147                 s/'\''/'\''\\'\'\''/g
 148                 h
 149                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 150                 s/'\''/'\''\'\'\''/g
 151                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 152
 153                 g
 154                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 155                 s/'\''/'\''\'\'\''/g
 156                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 157
 158                 g
 159                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 160                 s/'\''/'\''\'\'\''/g
 161                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 162
 163                 q
 164         }
 165         '
 166         encoding=$(git config i18n.commitencoding || echo UTF-8)
 167         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 168         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 169 }
 170
 171 # Make sure we are in a valid repository of a vintage we understand,
 172 # if we require to be in a git repository.
 173 if test -z "$NONGIT_OK"
 174 then
 175         GIT_DIR=$(git rev-parse --git-dir) || exit
 176         if [ -z "$SUBDIRECTORY_OK" ]
 177         then
 178                 test -z "$(git rev-parse --show-cdup)" || {
 179                         exit=$?
 180                         echo >&2 "You need to run this command from the toplevel of the working tree."
 181                         exit $exit
 182                 }
 183         fi
 184         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 185                 echo >&2 "Unable to determine absolute path of git directory"
 186                 exit 1
 187         }
 188         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 189 fi
 190
 191 # Fix some commands on Windows
 192 case $(uname -s) in
 193 *MINGW*)
 194         # Windows has its own (incompatible) sort and find
 195         sort () {
 196                 /usr/bin/sort "$@"
 197         }
 198         find () {
 199                 /usr/bin/find "$@"
 200         }
 201         ;;
 202 esac