git/git-sh-setup.sh

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#!/bin/sh
#
# This is included in commands that either have to be run from the toplevel
# of the repository, or with GIT_DIR environment variable properly.
# If the GIT_DIR does not look like the right correct git-repository,
# it dies.
# Having this variable in your environment would break scripts because
# you would cause "cd" to be taken to unexpected places. If you
# like CDPATH, define it for your interactive shell sessions without
# exporting it.
unset CDPATH
die() {
echo >&2 "$@"
exit 1
}
if test -n "$OPTIONS_SPEC"; then
usage() {
"$0" -h
exit 1
}
parseopt_extra=
[ -n "$OPTIONS_KEEPDASHDASH" ] &&
parseopt_extra="--keep-dashdash"
eval "$(
echo "$OPTIONS_SPEC" |
git rev-parse --parseopt $parseopt_extra -- "$@" ||
echo exit $?
)"
else
dashless=$(basename "$0" | sed -e 's/-/ /')
usage() {
die "Usage: $dashless $USAGE"
}
if [ -z "$LONG_USAGE" ]
then
LONG_USAGE="Usage: $dashless $USAGE"
else
LONG_USAGE="Usage: $dashless $USAGE
$LONG_USAGE"
fi
case "$1" in
-h|--h|--he|--hel|--help)
echo "$LONG_USAGE"
exit
esac
fi
set_reflog_action() {
if [ -z "${GIT_REFLOG_ACTION:+set}" ]
then
GIT_REFLOG_ACTION="$*"
export GIT_REFLOG_ACTION
fi
}
git_editor() {
: "${GIT_EDITOR:=$(git config core.editor)}"
: "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}"
case "$GIT_EDITOR,$TERM" in
,dumb)
echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL,"
echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb."
echo >&2 "Please set one of these variables to an appropriate"
echo >&2 "editor or run $0 with options that will not cause an"
echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)."
exit 1
;;
esac
eval "${GIT_EDITOR:=vi}" '"$@"'
}
is_bare_repository () {
git rev-parse --is-bare-repository
}
cd_to_toplevel () {
cdup=$(git rev-parse --show-cdup)
if test ! -z "$cdup"
then
# The "-P" option says to follow "physical" directory
# structure instead of following symbolic links. When cdup is
# "../", this means following the ".." entry in the current
# directory instead textually removing a symlink path element
# from the PWD shell variable. The "-P" behavior is more
# consistent with the C-style chdir used by most of Git.
cd -P "$cdup" || {
echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
exit 1
}
fi
}
require_work_tree () {
Clean up work-tree handling The old version of work-tree support was an unholy mess, barely readable, and not to the point. For example, why do you have to provide a worktree, when it is not used? As in "git status". Now it works. Another riddle was: if you can have work trees inside the git dir, why are some programs complaining that they need a work tree? IOW it is allowed to call $ git --git-dir=../ --work-tree=. bla when you really want to. In this case, you are both in the git directory and in the working tree. So, programs have to actually test for the right thing, namely if they are inside a working tree, and not if they are inside a git directory. Also, GIT_DIR=../.git should behave the same as if no GIT_DIR was specified, unless there is a repository in the current working directory. It does now. The logic to determine if a repository is bare, or has a work tree (tertium non datur), is this: --work-tree=bla overrides GIT_WORK_TREE, which overrides core.bare = true, which overrides core.worktree, which overrides GIT_DIR/.. when GIT_DIR ends in /.git, which overrides the directory in which .git/ was found. In related news, a long standing bug was fixed: when in .git/bla/x.git/, which is a bare repository, git formerly assumed ../.. to be the appropriate git dir. This problem was reported by Shawn Pearce to have caused much pain, where a colleague mistakenly ran "git init" in "/" a long time ago, and bare repositories just would not work. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-01 04:30:14 +04:00
test $(git rev-parse --is-inside-work-tree) = true ||
die "fatal: $0 cannot be used without a working tree."
}
get_author_ident_from_commit () {
pick_author_script='
/^author /{
s/'\''/'\''\\'\'\''/g
h
s/^author \([^<]*\) <[^>]*> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_NAME='\''&'\''/p
g
s/^author [^<]* <\([^>]*\)> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
g
s/^author [^<]* <[^>]*> \(.*\)$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_DATE='\''&'\''/p
q
}
'
encoding=$(git config i18n.commitencoding || echo UTF-8)
git show -s --pretty=raw --encoding="$encoding" "$1" -- |
LANG=C LC_ALL=C sed -ne "$pick_author_script"
}
# Make sure we are in a valid repository of a vintage we understand,
# if we require to be in a git repository.
if test -z "$NONGIT_OK"
then
GIT_DIR=$(git rev-parse --git-dir) || exit
if [ -z "$SUBDIRECTORY_OK" ]
then
test -z "$(git rev-parse --show-cdup)" || {
exit=$?
echo >&2 "You need to run this command from the toplevel of the working tree."
exit $exit
}
fi
test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || {
echo >&2 "Unable to determine absolute path of git directory"
exit 1
}
: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
fi
# Fix some commands on Windows
case $(uname -s) in
*MINGW*)
# Windows has its own (incompatible) sort and find
sort () {
/usr/bin/sort "$@"
}
find () {
/usr/bin/find "$@"
}
;;
esac