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 die() {
  15         echo >&2 "$@"
  16         exit 1
  17 }
  18
  19 if test -n "$OPTIONS_SPEC"; then
  20         usage() {
  21                 "$0" -h
  22                 exit 1
  23         }
  24
  25         parseopt_extra=
  26         [ -n "$OPTIONS_KEEPDASHDASH" ] &&
  27                 parseopt_extra="--keep-dashdash"
  28
  29         eval "$(
  30                 echo "$OPTIONS_SPEC" |
  31                         git rev-parse --parseopt $parseopt_extra -- "$@" ||
  32                 echo exit $?
  33         )"
  34 else
  35         dashless=$(basename "$0" | sed -e 's/-/ /')
  36         usage() {
  37                 die "Usage: $dashless $USAGE"
  38         }
  39
  40         if [ -z "$LONG_USAGE" ]
  41         then
  42                 LONG_USAGE="Usage: $dashless $USAGE"
  43         else
  44                 LONG_USAGE="Usage: $dashless $USAGE
  45
  46 $LONG_USAGE"
  47         fi
  48
  49         case "$1" in
  50                 -h|--h|--he|--hel|--help)
  51                 echo "$LONG_USAGE"
  52                 exit
  53         esac
  54 fi
  55
  56 set_reflog_action() {
  57         if [ -z "${GIT_REFLOG_ACTION:+set}" ]
  58         then
  59                 GIT_REFLOG_ACTION="$*"
  60                 export GIT_REFLOG_ACTION
  61         fi
  62 }
  63
  64 git_editor() {
  65         : "${GIT_EDITOR:=$(git config core.editor)}"
  66         : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
  67         case "$GIT_EDITOR,$TERM" in
  68         ,dumb)
  69                 echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
  70                 echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
  71                 echo >&2 "Please set one of these variables to an appropriate"
  72                 echo >&2 "editor or run $0 with options that will not cause an"
  73                 echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
  74                 exit 1
  75                 ;;
  76         esac
  77         eval "${GIT_EDITOR:=vi}" '"$@"'
  78 }
  79
  80 is_bare_repository () {
  81         git rev-parse --is-bare-repository
  82 }
  83
  84 cd_to_toplevel () {
  85         cdup=$(git rev-parse --show-cdup)
  86         if test ! -z "$cdup"
  87         then
  88                 case "$cdup" in
  89                 /*)
  90                         # Not quite the same as if we did "cd -P '$cdup'" when
  91                         # $cdup contains ".." after symlink path components.
  92                         # Don't fix that case at least until Git switches to
  93                         # "cd -P" across the board.
  94                         phys="$cdup"
  95                         ;;
  96                 ..|../*|*/..|*/../*)
  97                         # Interpret $cdup relative to the physical, not logical, cwd.
  98                         # Probably /bin/pwd is more portable than passing -P to cd or pwd.
  99                         phys="$(unset PWD; /bin/pwd)/$cdup"
 100                         ;;
 101                 *)
 102                         # There's no "..", so no need to make things absolute.
 103                         phys="$cdup"
 104                         ;;
 105                 esac
 106
 107                 cd "$phys" || {
 108                         echo >&2 "Cannot chdir to $phys, the toplevel of the working tree"
 109                         exit 1
 110                 }
 111         fi
 112 }
 113
 114 require_work_tree () {
 115         test $(git rev-parse --is-inside-work-tree) = true ||
 116         die "fatal: $0 cannot be used without a working tree."
 117 }
 118
 119 get_author_ident_from_commit () {
 120         pick_author_script='
 121         /^author /{
 122                 s/'\''/'\''\\'\'\''/g
 123                 h
 124                 s/^author \([^<]*\) <[^>]*> .*$/\1/
 125                 s/'\''/'\''\'\'\''/g
 126                 s/.*/GIT_AUTHOR_NAME='\''&'\''/p
 127
 128                 g
 129                 s/^author [^<]* <\([^>]*\)> .*$/\1/
 130                 s/'\''/'\''\'\'\''/g
 131                 s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
 132
 133                 g
 134                 s/^author [^<]* <[^>]*> \(.*\)$/\1/
 135                 s/'\''/'\''\'\'\''/g
 136                 s/.*/GIT_AUTHOR_DATE='\''&'\''/p
 137
 138                 q
 139         }
 140         '
 141         encoding=$(git config i18n.commitencoding || echo UTF-8)
 142         git show -s --pretty=raw --encoding="$encoding" "$1" -- |
 143         LANG=C LC_ALL=C sed -ne "$pick_author_script"
 144 }
 145
 146 # Make sure we are in a valid repository of a vintage we understand,
 147 # if we require to be in a git repository.
 148 if test -z "$NONGIT_OK"
 149 then
 150         GIT_DIR=$(git rev-parse --git-dir) || exit
 151         if [ -z "$SUBDIRECTORY_OK" ]
 152         then
 153                 test -z "$(git rev-parse --show-cdup)" || {
 154                         exit=$?
 155                         echo >&2 "You need to run this command from the toplevel of the working tree."
 156                         exit $exit
 157                 }
 158         fi
 159         test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
 160                 echo >&2 "Unable to determine absolute path of git directory"
 161                 exit 1
 162         }
 163         : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
 164 fi
 165
 166 # Fix some commands on Windows
 167 case $(uname -s) in
 168 *MINGW*)
 169         # Windows has its own (incompatible) sort and find
 170         sort () {
 171                 /usr/bin/sort "$@"
 172         }
 173         find () {
 174                 /usr/bin/find "$@"
 175         }
 176         ;;
 177 esac