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# -*- coding: utf-8 -*-
#-------------------------------------------------------------------------
# drawElements Quality Program utilities
# --------------------------------------
#
# Copyright 2015 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#-------------------------------------------------------------------------
import os
import urllib2
import hashlib
import registry
BASE_URL = ""
class RegistrySource:
def __init__(self, filename, revision, checksum):
self.filename = filename
self.revision = revision
self.checksum = checksum
def __hash__(self):
return hash((self.filename, self.revision, self.checksum))
def __eq__(self, other):
return (self.filename, self.revision, self.checksum) == (other.filename, other.revision, other.checksum)
def getFilename (self):
return self.filename
def getCacheFilename (self):
return "r%d-%s" % (self.revision, self.filename)
def getChecksum (self):
return self.checksum
def getRevision (self):
return self.revision
def getSourceUrl (self):
return "https://cvs.khronos.org/svn/repos/ogl/trunk/doc/registry/public/api/%s?r=%d" % (self.filename, self.revision)
def computeChecksum (data):
return hashlib.sha256(data).hexdigest()
def fetchUrl (url):
req = urllib2.urlopen(url)
data = req.read()
return data
def fetchFile (dstPath, url, checksum):
def writeFile (filename, data):
f = open(filename, 'wb')
f.write(data)
f.close()
if not os.path.exists(os.path.dirname(dstPath)):
os.makedirs(os.path.dirname(dstPath))
print "Fetching %s" % url
data = fetchUrl(url)
gotChecksum = computeChecksum(data)
if checksum != gotChecksum:
raise Exception("Checksum mismatch, exepected %s, got %s" % (checksum, gotChecksum))
writeFile(dstPath, data)
def checkFile (filename, checksum):
def readFile (filename):
f = open(filename, 'rb')
data = f.read()
f.close()
return data
if os.path.exists(filename):
return computeChecksum(readFile(filename)) == checksum
else:
return False
g_registryCache = {}
def getRegistry (source):
global g_registryCache
if source in g_registryCache:
return g_registryCache[source]
cacheDir = os.path.join(os.path.dirname(__file__), "cache")
cachePath = os.path.join(cacheDir, source.getCacheFilename())
if not checkFile(cachePath, source.checksum):
fetchFile(cachePath, source.getSourceUrl(), source.getChecksum())
parsedReg = registry.parse(cachePath)
g_registryCache[source] = parsedReg
return parsedReg
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