blob: 792814bac7bae48582fe7559a44499612e6bc126 [file] [log] [blame]
#!/usr/bin/env bash
# Copyright 2010 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
GOROOT=$(dirname $0)/..
# If a version file created by -save is available, use it
if [ -f "$GOROOT/VERSION" -a "$1" != "-save" ]; then
cat $GOROOT/VERSION
exit 0
fi
# Otherwise, if hg doesn't work for whatever reason, fail
if [ ! -d "$GOROOT/.hg" ] || ! hg version > /dev/null 2>&1; then
echo 'Unable to report version: hg and VERSION file missing' 1>&2
echo 'Generate VERSION with `src/version.bash -save` while hg is usable' 1>&2
exit 2
fi
# Get numerical revision
VERSION=$(hg identify -n 2>/dev/null)
if [ $? != 0 ]; then
OLD=$(hg identify | sed 1q)
VERSION=$(echo $OLD | awk '{print $1}')
fi
# Get branch type
BRANCH=release
if [ "$(hg identify -b 2>/dev/null)" == "default" ]; then
BRANCH=weekly
fi
# Find most recent known release or weekly tag.
TAG=$(hg tags |
grep $BRANCH |
sed 's/:.*//' |
sort -rn -k2 |
awk -v ver=$VERSION '$2 <= ver && $1~/^(release|weekly)\./ {print $1}' |
sed -n 1p)
if [ "$TAG" != "" ]; then
VERSION="$TAG $VERSION"
fi
if [ "$1" = "-save" ]; then
echo $VERSION > $GOROOT/VERSION
else
echo $VERSION
fi