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#!/usr/bin/env python3
import argparse
import contextlib
import lzma
import os
import shutil
import tempfile
import tarfile
DIR_OF_THIS_SCRIPT = os.path.dirname( os.path.abspath( __file__ ) )
DIR_OF_THIRD_PARTY = os.path.join( DIR_OF_THIS_SCRIPT, 'third_party' )
import urllib.error
import urllib.request
from io import BytesIO
@contextlib.contextmanager
def TemporaryDirectory():
temp_dir = tempfile.mkdtemp()
try:
yield temp_dir
finally:
shutil.rmtree( temp_dir )
def Download( url ):
print( 'Downloading {}'.format( url.rsplit( '/', 1 )[ -1 ] ) )
with urllib.request.urlopen( url ) as response:
return response.read()
def ExtractTar( uncompressed_data, destination ):
with tarfile.TarFile( fileobj=uncompressed_data, mode='r' ) as tar_file:
a_member = tar_file.getmembers()[ 0 ]
tar_file.extractall( destination )
# Determine the directory name
return os.path.join( destination, a_member.name.split( '/' )[ 0 ] )
def ExtractLZMA( compressed_data, destination ):
uncompressed_data = BytesIO( lzma.decompress( compressed_data ) )
return ExtractTar( uncompressed_data, destination )
def ParseArguments():
parser = argparse.ArgumentParser()
parser.add_argument( 'version', action='store',
help = 'The LLVM version' )
args = parser.parse_args()
return args
def Overwrite( src, dest ):
if os.path.exists( dest ):
shutil.rmtree( dest )
shutil.copytree( src, dest )
def UpdateClangHeaders( version, temp_dir ):
src_name = 'clang-{version}.src'.format( version = version )
archive_name = src_name + '.tar.xz'
compressed_data = Download( 'https://github.com/llvm/llvm-project/releases/'
f'download/llvmorg-{ version }/{ archive_name }' )
print( f'Extracting { archive_name }' )
src = ExtractLZMA( compressed_data, temp_dir )
print( 'Updating Clang headers...' )
includes_dir = os.path.join(
DIR_OF_THIRD_PARTY, 'clang', 'lib', 'clang', version, 'include' )
Overwrite( os.path.join( src, 'lib', 'Headers' ), includes_dir )
os.remove( os.path.join( includes_dir, 'CMakeLists.txt' ) )
Overwrite( os.path.join( src, 'include', 'clang-c' ),
os.path.join( DIR_OF_THIS_SCRIPT, 'cpp', 'llvm', 'include',
'clang-c' ) )
def Main():
args = ParseArguments()
with TemporaryDirectory() as temp_dir:
UpdateClangHeaders( args.version, temp_dir )
if __name__ == "__main__":
Main()
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