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v0.5.1
Revision 883653babd8ee7ea23e6a5c392bb739348b1eb61 authored by Junio C Hamano on 13 September 2006, 06:53:27 UTC, committed by Junio C Hamano on 13 September 2006, 07:54:43 UTC 
http-fetch: fix alternates handling.
 
Fetch over http from a repository that uses alternates to borrow
from neighbouring repositories were quite broken, apparently for
some time now.

We parse input and count bytes to allocate the new buffer, and
when we copy into that buffer we know exactly how many bytes we
want to copy from where.  Using strlcpy for it was simply
stupid, and the code forgot to take it into account that strlcpy
terminated the string with NUL.

Signed-off-by: Junio C Hamano <junkio@cox.net>
1 parent 60a6bf5
Raw File
git-resolve.sh 
#!/bin/sh
#
# Copyright (c) 2005 Linus Torvalds
#
# Resolve two trees.
#

USAGE='<head> <remote> <merge-message>'
. git-sh-setup

dropheads() {
	rm -f -- "$GIT_DIR/MERGE_HEAD" \
		"$GIT_DIR/LAST_MERGE" || exit 1
}

head=$(git-rev-parse --verify "$1"^0) &&
merge=$(git-rev-parse --verify "$2"^0) &&
merge_name="$2" &&
merge_msg="$3" || usage

#
# The remote name is just used for the message,
# but we do want it.
#
if [ -z "$head" -o -z "$merge" -o -z "$merge_msg" ]; then
	usage
fi

dropheads
echo $head > "$GIT_DIR"/ORIG_HEAD
echo $merge > "$GIT_DIR"/LAST_MERGE

common=$(git-merge-base $head $merge)
if [ -z "$common" ]; then
	die "Unable to find common commit between" $merge $head
fi

case "$common" in
"$merge")
	echo "Already up-to-date. Yeeah!"
	dropheads
	exit 0
	;;
"$head")
	echo "Updating from $head to $merge"
	git-read-tree -u -m $head $merge || exit 1
	git-update-ref -m "resolve $merge_name: Fast forward" \
		HEAD "$merge" "$head"
	git-diff-tree -p $head $merge | git-apply --stat
	dropheads
	exit 0
	;;
esac

# We are going to make a new commit.
git var GIT_COMMITTER_IDENT >/dev/null || exit

# Find an optimum merge base if there are more than one candidates.
LF='
'
common=$(git-merge-base -a $head $merge)
case "$common" in
?*"$LF"?*)
	echo "Trying to find the optimum merge base."
	G=.tmp-index$$
	best=
	best_cnt=-1
	for c in $common
	do
		rm -f $G
		GIT_INDEX_FILE=$G git-read-tree -m $c $head $merge \
			2>/dev/null || continue
		# Count the paths that are unmerged.
		cnt=`GIT_INDEX_FILE=$G git-ls-files --unmerged | wc -l`
		if test $best_cnt -le 0 -o $cnt -le $best_cnt
		then
			best=$c
			best_cnt=$cnt
			if test "$best_cnt" -eq 0
			then
				# Cannot do any better than all trivial merge.
				break
			fi
		fi
	done
	rm -f $G
	common="$best"
esac

echo "Trying to merge $merge into $head using $common."
git-update-index --refresh 2>/dev/null
git-read-tree -u -m $common $head $merge || exit 1
result_tree=$(git-write-tree  2> /dev/null)
if [ $? -ne 0 ]; then
	echo "Simple merge failed, trying Automatic merge"
	git-merge-index -o git-merge-one-file -a
	if [ $? -ne 0 ]; then
		echo $merge > "$GIT_DIR"/MERGE_HEAD
		die "Automatic merge failed, fix up by hand"
	fi
	result_tree=$(git-write-tree) || exit 1
fi
result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree -p $head -p $merge)
echo "Committed merge $result_commit"
git-update-ref -m "resolve $merge_name: In-index merge" \
	HEAD "$result_commit" "$head"
git-diff-tree -p $head $result_commit | git-apply --stat
dropheads
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