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# Copyright 2015 The Meson development team
# 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 mlog
import urllib.request, os, hashlib, shutil
class PackageDefinition:
def __init__(self, fname):
self.values = {}
ifile = open(fname)
first = ifile.readline().strip()
if first != '[mesonwrap]':
raise RuntimeError('Invalid format of package file')
for line in ifile:
line = line.strip()
if line == '':
continue
(k, v) = line.split('=', 1)
k = k.strip()
v = v.strip()
self.values[k] = v
def get(self, key):
return self.values[key]
def has_patch(self):
return 'patch_url' in self.values
class Resolver:
def __init__(self, subdir_root):
self.subdir_root = subdir_root
self.cachedir = os.path.join(self.subdir_root, 'packagecache')
def resolve(self, packagename):
fname = os.path.join(self.subdir_root, packagename + '.wrap')
if not os.path.isfile(fname):
return None
if not os.path.isdir(self.cachedir):
os.mkdir(self.cachedir)
p = PackageDefinition(fname)
self.download(p, packagename)
self.extract_package(p)
return p.get('directory')
def get_data(self, url):
u = urllib.request.urlopen(url)
data = u.read()
u.close()
h = hashlib.sha256()
h.update(data)
hashvalue = h.hexdigest()
return (data, hashvalue)
def download(self, p, packagename):
ofname = os.path.join(self.cachedir, p.get('source_filename'))
if os.path.exists(ofname):
mlog.log('Using', mlog.bold(packagename), 'from cache.')
return
srcurl = p.get('source_url')
mlog.log('Dowloading', mlog.bold(packagename), 'from', srcurl)
(srcdata, dhash) = self.get_data(srcurl)
expected = p.get('source_hash')
if dhash != expected:
raise RuntimeError('Incorrect hash for source %s:\n %s expected\n %s actual.' % (packagename, expected, dhash))
if p.has_patch():
purl = p.get('patch_url')
mlog.log('Downloading patch from', mlog.bold(purl))
(pdata, phash) = self.get_data(purl)
expected = p.get('patch_hash')
if phash != expected:
raise RuntimeError('Incorrect hash for patch %s:\n %s expected\n %s actual' % (packagename, expected, phash))
open(os.path.join(self.cachedir, p.get('patch_filename')), 'wb').write(pdata)
else:
mlog.log('Package does not require patch.')
open(ofname, 'wb').write(srcdata)
def extract_package(self, package):
if os.path.isdir(os.path.join(self.subdir_root, package.get('directory'))):
return
shutil.unpack_archive(os.path.join(self.cachedir, package.get('source_filename')), self.subdir_root)
if package.has_patch():
shutil.unpack_archive(os.path.join(self.cachedir, package.get('patch_filename')), self.subdir_root)
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