rockbox/tools/version.sh
Andrew Mahone 1de930227b Attempt to make version.sh a little more resistant to producing spurious "modified" status on git repositories.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20933 a1c6a512-1295-4272-9138-f99709370657
2009-05-15 00:57:35 +00:00

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#!/bin/sh
# __________ __ ___.
# Open \______ \ ____ ____ | | _\_ |__ _______ ___
# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
# \/ \/ \/ \/ \/
# $Id$
#
# Usage: version.sh [source-root]
# Prints the revision of the repository.
#
# The format is rNNNNN[M]-YYMMDD
#
# The M indicates the revision isn't matched to a pure Subversion ID, usually
# because it's built from something like GIT.
svnversion_safe() {
# LANG=C forces svnversion to not localize "exported".
if OUTPUT=`LANG=C svnversion "$@"`; then
if [ "$OUTPUT" = "exported" ]; then
echo "unknown"
else
echo "r$OUTPUT"
fi
else
echo "unknown"
fi
}
# This logic is pulled from the Linux's scripts/setlocalversion (also GPL) and tweaked for
# rockbox. If the commit information for HEAD has a svn-id in it we report that instead of
# the git id
gitversion() {
export GIT_DIR="$1"
# This verifies we are in a git directory
if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
# Get the svn revision of the most recent git-svn commit
version=`git log --pretty=format:'%b' --grep='git-svn-id: svn' -1 | head -n 1 | perl -ne 'm/@(\d*)/; print "r" . $1;'`
mod=""
# Is this a git-svn commit?
if ! git log HEAD^.. --pretty=format:"%b" | grep -q "git-svn-id: svn" ; then
mod="M"
# Are there uncommitted changes?
elif git diff --name-only HEAD | read dummy; then
mod="M"
elif git diff --name-only --cached HEAD | read dummy; then
mod="M"
fi
echo "${version}${mod}"
# All done with git
exit
fi
}
#
# First locate the top of the src tree (passed in usually)
#
if [ -n "$1" ]; then TOP=$1; else TOP=..; fi
# If the VERSIONFILE exisits we use that
VERSIONFILE=docs/VERSION
if [ -r $TOP/$VERSIONFILE ]; then VER=`cat $TOP/$VERSIONFILE`;
else
# Ok, we need to derive it from the Version Control system
if [ -d "$TOP/.git" ]; then
VER=`gitversion $TOP/.git`
else
VER=`svnversion_safe $TOP`;
if [ "$VER" = "unknown" ]; then
# try getting it from a subdir to test if perhaps they are symlinked
# from the root
VER=`svnversion_safe $TOP/tools`;
fi
fi
fi
VERSION=$VER-`date -u +%y%m%d`
echo $VERSION