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git/git-pull.sh
Junio C Hamano ae2b0f1518 git-sh-setup: die if outside git repository.
Now all the users of this script detect its exit status and die,
complaining that it is outside git repository.  So move the code
that dies from all callers to git-sh-setup script.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-25 13:49:17 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
# Fetch one or more remote refs and merge it/them into the current HEAD.
. git-sh-setup
usage () {
echo >&2 "usage: $0"' [-n] [--no-commit] [--no-summary] [--help]
[-s strategy]...
[<fetch-options>]
<repo> <head>...
Fetch one or more remote refs and merge it/them into the current HEAD.
'
exit 1
}
strategy_args= no_summary= no_commit=
while case "$#,$1" in 0) break ;; *,-*) ;; *) break ;; esac
do
case "$1" in
-n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\
--no-summa|--no-summar|--no-summary)
no_summary=-n ;;
--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
no_commit=--no-commit ;;
-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
--strateg=*|--strategy=*|\
-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
case "$#,$1" in
*,*=*)
strategy=`expr "$1" : '-[^=]*=\(.*\)'` ;;
1,*)
usage ;;
*)
strategy="$2"
shift ;;
esac
strategy_args="${strategy_args}-s $strategy "
;;
-h|--h|--he|--hel|--help)
usage
;;
-*)
# Pass thru anything that is meant for fetch.
break
;;
esac
shift
done
orig_head=$(git-rev-parse --verify HEAD) || die "Pulling into a black hole?"
git-fetch --update-head-ok "$@" || exit 1
curr_head=$(git-rev-parse --verify HEAD)
if test "$curr_head" != "$orig_head"
then
# The fetch involved updating the current branch.
# The working tree and the index file is still based on the
# $orig_head commit, but we are merging into $curr_head.
# First update the working tree to match $curr_head.
echo >&2 "Warning: fetch updated the current branch head."
echo >&2 "Warning: fast forwarding your working tree."
git-read-tree -u -m "$orig_head" "$curr_head" ||
die "You need to first update your working tree."
fi
merge_head=$(sed -e '/ not-for-merge /d' \
-e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | \
tr '\012' ' ')
case "$merge_head" in
'')
echo >&2 "No changes."
exit 0
;;
?*' '?*)
var=`git-var -l | sed -ne 's/^pull\.octopus=/-s /p'`
if test '' = "$var"
then
strategy_default_args='-s octopus'
else
strategy_default_args=$var
fi
;;
*)
var=`git-var -l | sed -ne 's/^pull\.twohead=/-s /p'`
if test '' = "$var"
then
strategy_default_args='-s recursive'
else
strategy_default_args=$var
fi
;;
esac
case "$strategy_args" in
'')
strategy_args=$strategy_default_args
;;
esac
merge_name=$(git-fmt-merge-msg <"$GIT_DIR/FETCH_HEAD")
git-merge $no_summary $no_commit $strategy_args "$merge_name" HEAD $merge_head