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#!/bin/sh

# version_hook: set a .version file in a git repository based on a
#               svn.asterisk.org SVN repository

# Originally by Shaun Ruffel

# FIXME: Nicer formatting. Preprocess?
PROJ_PAT="\(dahdi/linux\|dahdi/tools\|asterisk\|libpri\)"

# Do not update the .version file if it's part of the repository
# This normally means we're on a tags/ branch.
if git ls-files | grep -q ^\.version; then
	exit 0
fi

if [ ! -d .git ]; then
	return 0
fi

# If the first log commit messages indicates that this is checked into
# subversion, we'll just use the SVN- form of the revision.
SVN_REV=`git log --pretty=full -1 | grep git-svn-id | sed -e "s/.*\@\([^\s]*\)\s.*/\1/g"`
if [ -z "$SVN_REV" ]; then
	RESULT=`git log --pretty=format:"%h" -1`
	echo GIT-${RESULT} > .version
	exit 0
fi

PARTS=`LANG=C git log --pretty=full | grep '^ *git-svn-id:' | head -1 | awk '{print $2;}' | sed -e "s:^.*/svn/${PROJ_PAT}/::" -e 's:/: :g' -e 's/@.*$//g'`
BRANCH=0
TEAM=0

if [ "${PARTS}" = "trunk" ]; then
	echo SVN-'trunk'-r${SVN_REV} > .version
	exit 0
fi

for PART in $PARTS; do
	if [ ${BRANCH} != 0 ]; then
		RESULT="${RESULT}-${PART}"
		break
	fi

	if [ ${TEAM} != 0 ]; then
		RESULT="${RESULT}-${PART}"
		continue
	fi

	if [ "${PART}" = "branches" ]; then
		BRANCH=1
		RESULT="branch"
		continue
	fi

	if [ "${PART}" = "tags" ]; then
		BRANCH=1
		RESULT="tag"
		continue
	fi

	if [ "${PART}" = "team" ]; then
		TEAM=1
		continue
	fi
done

echo SVN-${RESULT##-}-r${SVN_REV} > .version