2005-07-08 17:57:21 +00:00
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#!/bin/sh
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#
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2005-11-24 08:12:11 +00:00
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# This is included in commands that either have to be run from the toplevel
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# of the repository, or with GIT_DIR environment variable properly.
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# If the GIT_DIR does not look like the right correct git-repository,
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# it dies.
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2005-07-08 17:57:21 +00:00
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2005-09-13 02:47:07 +00:00
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# Having this variable in your environment would break scripts because
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2007-09-15 23:32:23 +00:00
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# you would cause "cd" to be taken to unexpected places. If you
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2005-09-13 02:47:07 +00:00
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# like CDPATH, define it for your interactive shell sessions without
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# exporting it.
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2012-08-08 19:08:17 +00:00
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# But we protect ourselves from such a user mistake nevertheless.
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2005-09-13 02:47:07 +00:00
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unset CDPATH
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2012-12-07 22:31:52 +00:00
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# Similarly for IFS, but some shells (e.g. FreeBSD 7.2) are buggy and
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# do not equate an unset IFS with IFS with the default, so here is
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# an explicit SP HT LF.
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IFS='
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'
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2012-08-08 19:08:17 +00:00
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2009-06-08 16:41:49 +00:00
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git_broken_path_fix () {
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case ":$PATH:" in
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*:$1:*) : ok ;;
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*)
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PATH=$(
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SANE_TOOL_PATH="$1"
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IFS=: path= sep=
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set x $PATH
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shift
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for elem
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do
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case "$SANE_TOOL_PATH:$elem" in
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(?*:/bin | ?*:/usr/bin)
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path="$path$sep$SANE_TOOL_PATH"
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sep=:
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SANE_TOOL_PATH=
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esac
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path="$path$sep$elem"
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sep=:
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done
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echo "$path"
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)
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;;
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esac
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}
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# @@BROKEN_PATH_FIX@@
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2009-06-05 23:36:15 +00:00
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2011-06-09 07:47:02 +00:00
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die () {
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die_with_status 1 "$@"
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}
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die_with_status () {
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status=$1
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shift
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echo >&2 "$*"
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exit "$status"
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2005-07-08 17:57:21 +00:00
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}
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2009-06-16 22:32:59 +00:00
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GIT_QUIET=
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say () {
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if test -z "$GIT_QUIET"
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then
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printf '%s\n' "$*"
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fi
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}
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2007-11-04 10:30:54 +00:00
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if test -n "$OPTIONS_SPEC"; then
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usage() {
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2007-12-20 20:58:06 +00:00
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"$0" -h
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exit 1
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2007-11-04 10:30:54 +00:00
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}
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2007-11-08 09:32:11 +00:00
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parseopt_extra=
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[ -n "$OPTIONS_KEEPDASHDASH" ] &&
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parseopt_extra="--keep-dashdash"
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eval "$(
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2007-11-08 07:04:38 +00:00
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echo "$OPTIONS_SPEC" |
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2007-11-08 09:32:11 +00:00
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git rev-parse --parseopt $parseopt_extra -- "$@" ||
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echo exit $?
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)"
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2007-11-04 10:30:54 +00:00
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else
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2008-07-13 13:36:15 +00:00
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dashless=$(basename "$0" | sed -e 's/-/ /')
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2007-11-04 10:30:54 +00:00
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usage() {
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2013-02-24 00:50:09 +00:00
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die "usage: $dashless $USAGE"
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2007-11-04 10:30:54 +00:00
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}
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if [ -z "$LONG_USAGE" ]
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then
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2013-02-24 00:50:09 +00:00
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LONG_USAGE="usage: $dashless $USAGE"
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2007-11-04 10:30:54 +00:00
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else
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2013-02-24 00:50:09 +00:00
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LONG_USAGE="usage: $dashless $USAGE
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2007-11-04 10:30:54 +00:00
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$LONG_USAGE"
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fi
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case "$1" in
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2011-10-03 18:21:36 +00:00
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-h)
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2007-11-04 10:30:54 +00:00
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echo "$LONG_USAGE"
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exit
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esac
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fi
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2005-12-11 09:55:49 +00:00
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2006-12-28 07:34:48 +00:00
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set_reflog_action() {
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if [ -z "${GIT_REFLOG_ACTION:+set}" ]
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then
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GIT_REFLOG_ACTION="$*"
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export GIT_REFLOG_ACTION
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fi
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}
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2007-07-20 05:09:35 +00:00
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git_editor() {
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2009-10-31 01:42:34 +00:00
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if test -z "${GIT_EDITOR:+set}"
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then
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GIT_EDITOR="$(git var GIT_EDITOR)" || return $?
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fi
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eval "$GIT_EDITOR" '"$@"'
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2007-07-20 05:09:35 +00:00
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}
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2010-02-15 05:04:13 +00:00
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git_pager() {
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if test -t 1
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then
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GIT_PAGER=$(git var GIT_PAGER)
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else
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GIT_PAGER=cat
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fi
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: ${LESS=-FRSX}
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export LESS
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eval "$GIT_PAGER" '"$@"'
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}
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2009-11-23 23:56:32 +00:00
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sane_grep () {
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GREP_OPTIONS= LC_ALL=C grep "$@"
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}
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sane_egrep () {
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GREP_OPTIONS= LC_ALL=C egrep "$@"
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}
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2007-01-07 10:17:52 +00:00
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is_bare_repository () {
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2007-07-03 05:52:14 +00:00
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git rev-parse --is-bare-repository
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2007-01-07 10:17:52 +00:00
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}
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2007-01-12 20:44:08 +00:00
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cd_to_toplevel () {
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2010-01-11 22:34:34 +00:00
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cdup=$(git rev-parse --show-toplevel) &&
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cd "$cdup" || {
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echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
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exit 1
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}
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2007-01-12 20:44:08 +00:00
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}
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require-work-tree wants more than what its name says
Somebody tried "git pull" from a random place completely outside the work
tree, while exporting GIT_DIR and GIT_WORK_TREE that are set to correct
places, e.g.
GIT_WORK_TREE=$HOME/git.git
GIT_DIR=$GIT_WORK_TREE/.git
export GIT_WORK_TREE GIT_DIR
cd /tmp
git pull
At the beginning of git-pull, we check "require-work-tree" and then
"cd-to-toplevel". I _think_ the original intention when I wrote the
command was "we MUST have a work tree, our $(cwd) might not be at the
top-level directory of it", and no stronger than that. That check is a
very sensible thing to do before doing cd-to-toplevel. We check that the
place we would want to go exists, and then go there.
But the implementation of require_work_tree we have today is quite
different. I don't have energy to dig the history, but currently it says:
test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
die "fatal: $0 cannot be used without a working tree."
Which is completely bogus. Even though we may happen to be just outside
of it right now, we may have a working tree that we can cd_to_toplevel
back to.
Add a function "require_work_tree_exists" that implements the check
this function originally intended (this is so that third-party scripts
that rely on the current behaviour do not have to get broken).
For now, update _no_ in-tree scripts, not even "git pull", as nobody on
the list seems to really care about the above corner case workflow that
triggered this. Scripts can be updated after vetting that they do want the
"we want to make sure the place we are going to go actually exists"
semantics.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-05 02:11:18 +00:00
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require_work_tree_exists () {
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if test "z$(git rev-parse --is-bare-repository)" != zfalse
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then
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die "fatal: $0 cannot be used without a working tree."
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fi
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}
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2006-12-31 04:32:38 +00:00
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require_work_tree () {
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2010-02-17 04:18:50 +00:00
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test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true ||
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2006-12-31 04:32:38 +00:00
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die "fatal: $0 cannot be used without a working tree."
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}
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2010-10-19 14:39:28 +00:00
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require_clean_work_tree () {
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git rev-parse --verify HEAD >/dev/null || exit 1
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git update-index -q --ignore-submodules --refresh
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err=0
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if ! git diff-files --quiet --ignore-submodules
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then
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echo >&2 "Cannot $1: You have unstaged changes."
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err=1
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fi
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if ! git diff-index --cached --quiet --ignore-submodules HEAD --
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then
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if [ $err = 0 ]
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then
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echo >&2 "Cannot $1: Your index contains uncommitted changes."
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else
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echo >&2 "Additionally, your index contains uncommitted changes."
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fi
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err=1
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fi
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if [ $err = 1 ]
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then
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test -n "$2" && echo >&2 "$2"
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exit 1
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fi
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}
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2012-10-18 07:25:22 +00:00
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# Generate a sed script to parse identities from a commit.
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#
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# Reads the commit from stdin, which should be in raw format (e.g., from
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# cat-file or "--pretty=raw").
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#
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# The first argument specifies the ident line to parse (e.g., "author"), and
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# the second specifies the environment variable to put it in (e.g., "AUTHOR"
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# for "GIT_AUTHOR_*"). Multiple pairs can be given to parse author and
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# committer.
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pick_ident_script () {
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while test $# -gt 0
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do
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lid=$1; shift
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uid=$1; shift
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printf '%s' "
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/^$lid /{
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s/'/'\\\\''/g
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h
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s/^$lid "'\([^<]*\) <[^>]*> .*$/\1/'"
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s/.*/GIT_${uid}_NAME='&'/p
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g
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s/^$lid "'[^<]* <\([^>]*\)> .*$/\1/'"
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s/.*/GIT_${uid}_EMAIL='&'/p
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g
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s/^$lid "'[^<]* <[^>]*> \(.*\)$/@\1/'"
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s/.*/GIT_${uid}_DATE='&'/p
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}
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"
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done
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echo '/^$/q'
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}
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# Create a pick-script as above and feed it to sed. Stdout is suitable for
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# feeding to eval.
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parse_ident_from_commit () {
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LANG=C LC_ALL=C sed -ne "$(pick_ident_script "$@")"
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}
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# Parse the author from a commit given as an argument. Stdout is suitable for
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# feeding to eval to set the usual GIT_* ident variables.
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2007-06-25 00:04:11 +00:00
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get_author_ident_from_commit () {
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encoding=$(git config i18n.commitencoding || echo UTF-8)
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2008-02-13 21:13:21 +00:00
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git show -s --pretty=raw --encoding="$encoding" "$1" -- |
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2012-10-18 07:25:22 +00:00
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parse_ident_from_commit author AUTHOR
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2007-06-25 00:04:11 +00:00
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}
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2010-02-24 23:34:16 +00:00
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# Clear repo-local GIT_* environment variables. Useful when switching to
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# another repository (e.g. when entering a submodule). See also the env
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# list in git_connect()
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clear_local_git_env() {
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unset $(git rev-parse --local-env-vars)
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}
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mergetools/p4merge: create a base if none available
Originally, with no base, Git gave P4Merge $LOCAL as a dummy base:
p4merge "$LOCAL" "$LOCAL" "$REMOTE" "$MERGED"
Commit 0a0ec7bd changed this to:
p4merge "empty file" "$LOCAL" "$REMOTE" "$MERGED"
to avoid the problem of being unable to save in some circumstances with
similar inputs.
Unfortunately this approach produces much worse results on differing
inputs. P4Merge really regards the blank file as the base, and once you
have just a couple of differences between the two branches you end up
with one a massive full-file conflict. The 3-way diff is not readable,
and you have to invoke "difftool MERGE_HEAD HEAD" manually to get a
useful view.
The original approach appears to have invoked special 2-way merge
behaviour in P4Merge that occurs only if the base filename is "" or
equal to the left input. You get a good visual comparison, and it does
not auto-resolve differences. (Normally if one branch matched the base,
it would autoresolve to the other branch).
But there appears to be no way of getting this 2-way behaviour and being
able to reliably save. Having base==left appears to be triggering other
assumptions. There are tricks the user can use to force the save icon
on, but it's not intuitive.
So we now follow a suggestion given in the original patch's discussion:
generate a virtual base, consisting of the lines common to the two
branches. This is the same as the technique used in resolve and octopus
merges, so we relocate that code to a shared function.
Note that if there are no differences at the same location, this
technique can lead to automatic resolution without conflict, combining
everything from the 2 files. As with the other merges using this
technique, we assume the user will inspect the result before saving.
Signed-off-by: Kevin Bracey <kevin@bracey.fi>
Reviewed-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-03-13 01:12:21 +00:00
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# Generate a virtual base file for a two-file merge. Uses git apply to
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# remove lines from $1 that are not in $2, leaving only common lines.
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create_virtual_base() {
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sz0=$(wc -c <"$1")
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@@DIFF@@ -u -La/"$1" -Lb/"$1" "$1" "$2" | git apply --no-add
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sz1=$(wc -c <"$1")
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# If we do not have enough common material, it is not
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# worth trying two-file merge using common subsections.
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expr $sz0 \< $sz1 \* 2 >/dev/null || : >"$1"
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}
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2007-11-30 21:06:30 +00:00
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2012-05-16 17:36:01 +00:00
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# Platform specific tweaks to work around some commands
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2007-11-30 21:06:30 +00:00
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case $(uname -s) in
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*MINGW*)
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# Windows has its own (incompatible) sort and find
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sort () {
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/usr/bin/sort "$@"
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}
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find () {
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/usr/bin/find "$@"
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}
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2012-04-17 18:48:39 +00:00
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# git sees Windows-style pwd
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pwd () {
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builtin pwd -W
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}
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2010-09-30 13:24:07 +00:00
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is_absolute_path () {
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case "$1" in
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[/\\]* | [A-Za-z]:*)
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return 0 ;;
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esac
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return 1
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}
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2007-11-30 21:06:30 +00:00
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;;
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2010-09-30 13:24:07 +00:00
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*)
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is_absolute_path () {
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case "$1" in
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/*)
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return 0 ;;
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esac
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return 1
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}
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2007-11-30 21:06:30 +00:00
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esac
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2012-05-16 17:36:01 +00:00
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# Make sure we are in a valid repository of a vintage we understand,
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# if we require to be in a git repository.
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if test -z "$NONGIT_OK"
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then
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GIT_DIR=$(git rev-parse --git-dir) || exit
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|
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if [ -z "$SUBDIRECTORY_OK" ]
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|
|
|
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
|
2013-06-14 13:17:51 +00:00
|
|
|
|
|
|
|
peel_committish () {
|
|
|
|
case "$1" in
|
|
|
|
:/*)
|
|
|
|
peeltmp=$(git rev-parse --verify "$1") &&
|
|
|
|
git rev-parse --verify "${peeltmp}^0"
|
|
|
|
;;
|
|
|
|
*)
|
|
|
|
git rev-parse --verify "${1}^0"
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
}
|