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import pprint
import os
import componentinfo
class LLVMProjectInfo(object):
@staticmethod
def load_infos_from_path(llvmbuild_source_root):
# FIXME: Implement a simple subpath file list cache, so we don't restat
# directories we have already traversed.
# First, discover all the LLVMBuild.txt files.
for dirpath,dirnames,filenames in os.walk(llvmbuild_source_root,
followlinks = True):
# If there is no LLVMBuild.txt file in a directory, we don't recurse
# past it. This is a simple way to prune our search, although it
# makes it easy for users to add LLVMBuild.txt files in places they
# won't be seen.
if 'LLVMBuild.txt' not in filenames:
del dirnames[:]
continue
# Otherwise, load the LLVMBuild file in this directory.
assert dirpath.startswith(llvmbuild_source_root)
subpath = '/' + dirpath[len(llvmbuild_source_root)+1:]
llvmbuild_path = os.path.join(dirpath, 'LLVMBuild.txt')
for info in componentinfo.load_from_path(llvmbuild_path, subpath):
yield info
@staticmethod
def load_from_path(source_root, llvmbuild_source_root):
infos = list(
LLVMProjectInfo.load_infos_from_path(llvmbuild_source_root))
return LLVMProjectInfo(source_root, infos)
def __init__(self, source_root, component_infos):
self.source_root = source_root
self.component_infos = component_infos
def main():
from optparse import OptionParser, OptionGroup
parser = OptionParser("usage: %prog [options]")
parser.add_option("", "--source-root", dest="source_root", metavar="PATH",
help="Path to the LLVM source (inferred if not given)",
action="store", default=None)
parser.add_option(
"", "--llvmbuild-source-root", dest="llvmbuild_source_root",
help="If given, an alternate path to search for LLVMBuild.txt files",
action="store", default=None, metavar="PATH")
(opts, args) = parser.parse_args()
# Determine the LLVM source path, if not given.
source_root = opts.source_root
if source_root:
if not os.path.exists(os.path.join(source_root, 'lib', 'VMCore',
'Function.cpp')):
parser.error('invalid LLVM source root: %r' % source_root)
else:
llvmbuild_path = os.path.dirname(__file__)
llvm_build_path = os.path.dirname(llvmbuild_path)
utils_path = os.path.dirname(llvm_build_path)
source_root = os.path.dirname(utils_path)
if not os.path.exists(os.path.join(source_root, 'lib', 'VMCore',
'Function.cpp')):
parser.error('unable to infer LLVM source root, please specify')
# Construct the LLVM project information.
llvmbuild_source_root = opts.llvmbuild_source_root or source_root
project_info = LLVMProjectInfo.load_from_path(
source_root, llvmbuild_source_root)
if __name__=='__main__':
main()
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