diff options
Diffstat (limited to 'CreateVersionFile.py')
| -rwxr-xr-x | CreateVersionFile.py | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/CreateVersionFile.py b/CreateVersionFile.py new file mode 100755 index 0000000..59063ad --- /dev/null +++ b/CreateVersionFile.py @@ -0,0 +1,212 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- +# libavg - Media Playback Engine. +# Copyright (C) 2003-2014 Ulrich von Zadow +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2 of the License, or (at your option) any later version. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# Current versions can be found at www.libavg.de +# + +# The script generates a header file that contains versioning data for +# the current build. + +import os +import sys +import subprocess +import errno +import re +import socket +import getpass +import platform +import datetime +import pickle + +CHECK_FIELDS = ('releaseVersion', 'revision', 'branchurl') +OUTPUT_TEMPLATE = '''// version.h +// This file is automatically generated by CreateVersionFile.py + +#define AVG_VERSION_RELEASE "%(releaseVersion)s" +#define AVG_VERSION_FULL "%(fullVersion)s" +#define AVG_VERSION_BRANCH_URL "%(branchurl)s" +#define AVG_VERSION_BUILDER "%(builder)s" +#define AVG_VERSION_BUILDTIME "%(buildtime)s" +#define AVG_VERSION_REVISION %(revision)s +#define AVG_VERSION_MAJOR "%(major)s" +#define AVG_VERSION_MINOR "%(minor)s" +#define AVG_VERSION_MICRO "%(micro)s" +''' +TOPDIR = os.path.dirname(os.path.abspath(__file__)) +INPUT_FILE = os.path.join(TOPDIR, 'm4', 'avg_version.m4') +CACHE_FILE = os.path.join(TOPDIR, 'versioninfo.cache') +OUTPUT_FILENAME = 'version.h' + +def err(text): + print >>sys.stderr, text + +def getSvnRevision(): + revision = 0 + + try: + process = subprocess.Popen(['svnversion'], + cwd=TOPDIR, + stdout=subprocess.PIPE) + + output, discard = process.communicate() + except OSError, e: + print e, dir(e) + if e.errno == errno.ENOENT: + err('Cannot query current revision number via svninfo: ' + '"svnversion" executable cannot be found.') + else: + match = re.search(r'^(\d+)(?::(\d+))?', output) + if match: + if match.group(2): + revision = match.group(2) + else: + revision = match.group(1) + + return int(revision) + +def getSvnBranch(): + url = '' + branch = 'exported' + + try: + env = os.environ.copy() + env['LC_ALL'] = 'C' + process = subprocess.Popen(['svn', 'info', '.'], + cwd=TOPDIR, + stdout=subprocess.PIPE, + env=env) + + output, discard = process.communicate() + except OSError, e: + if e.errno == errno.ENOENT: + err('Cannot query current branch via svn: ' + '"svn" executable cannot be found.') + branch = 'unknown' + else: + match = re.search(r'^URL: (.+)$', output, re.M) + if match: + url = match.group(1) + + if 'svn/trunk' in url: + branch = 'trunk' + elif 'svn/branches/' in url: + match = re.search(r'svn\/branches\/(.+)/?', url) + if match: + branch = match.group(1) + + return (url, branch) + +def getBuilder(): + user = getpass.getuser() + hostname = socket.gethostname() + + return '%s@%s %s' % (user, hostname, platform.platform()) + +def extractComponentFromM4(text, component): + match = re.search(r'%s\s*\].*\[\s*([A-Za-z0-9\.]+)\s*\]' % component, text, re.M) + if match: + return match.group(1) + else: + err('Cannot identify %s version component in %s' % (component, INPUT_FILE)) + sys.exit(1) + +def getVersionComponents(): + f = open(INPUT_FILE) + contents = f.read() + f.close() + + major = extractComponentFromM4(contents, 'VERSION_MAJOR') + minor = extractComponentFromM4(contents, 'VERSION_MINOR') + micro = extractComponentFromM4(contents, 'VERSION_MICRO') + + return (major, minor, micro) + +def assembleVersionInfo(major, minor, micro): + releaseVersion = '%s.%s.%s' % (major, minor, micro) + revision = getSvnRevision() + branchurl, branch = getSvnBranch() + builder = getBuilder() + buildtime = datetime.datetime.now().isoformat() + + if revision and branch: + fullVersion = '%s-%s/r%s' % (releaseVersion, branch, revision) + elif revision: + fullVersion = '%s-r%s' % (releaseVersion, revision) + else: + fullVersion = releaseVersion + + return locals() + +def dumpVersionInfo(versionInfo): + for k, v in versionInfo.iteritems(): + print ' %s: %s' % (k, v) + +def hasChanged(versionInfo): + try: + cachef = open(CACHE_FILE) + except IOError: + return True + + try: + cachedVersionInfo = pickle.load(cachef) + except Exception, e: + err('Corrupted %s file, forcing rewrite (%s)' % (CACHE_FILE, str(e))) + cachef.close() + return True + + cachef.close() + + for field in CHECK_FIELDS: + if versionInfo.get(field) != cachedVersionInfo.get(field): + return True + + return False + +def writeVersionHeader(versionInfo, originalFile): + outf = open(originalFile, 'w') + outf.write(OUTPUT_TEMPLATE % versionInfo) + outf.close() + + try: + cachef = open(CACHE_FILE, 'w') + except IOError: + pass + else: + pickle.dump(versionInfo, cachef) + cachef.close() + +def main(topBuildDir=TOPDIR): + versionInfo = assembleVersionInfo(*getVersionComponents()) + outputFile = os.path.join(topBuildDir, OUTPUT_FILENAME) + + # Avoid to write again if the content hasn't significantly changed + if not os.path.exists(outputFile) or hasChanged(versionInfo): + dumpVersionInfo(versionInfo) + writeVersionHeader(versionInfo, outputFile) + + +if __name__ == '__main__': + if len(sys.argv) == 2: + main(sys.argv[1]) + elif len(sys.argv) == 1: + main() + else: + err('%s [top build dir]' % sys.argv[0]) + sys.exit(1) + |