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import argparse
import codecs
import errno
import os
import process_command_files as pcf
import shutil
import sys
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('--build-root', required=True)
parser.add_argument('--dst-dir', required=True)
parser.add_argument('--existing', choices=('skip', 'overwrite'), default='overwrite')
parser.add_argument('--source-root', required=True)
parser.add_argument('--src-dir', required=None)
parser.add_argument('files', nargs='*')
return parser.parse_args(pcf.get_args(sys.argv[1:]))
def makedirs(dirname):
try:
os.makedirs(dirname)
except OSError as e:
if e.errno == errno.EEXIST and os.path.isdir(dirname):
pass
else:
raise
def copy_file(src, dst, overwrite=False, orig_path=None, generated=False):
if os.path.exists(dst) and not overwrite:
return
makedirs(os.path.dirname(dst))
with open(src, 'rb') as fsrc, open(dst, 'wb') as fdst:
if (orig_path or generated) and src.endswith('.md'):
out = b''
buf = fsrc.readline()
bom_length = len(codecs.BOM_UTF8)
if buf[:bom_length] == codecs.BOM_UTF8:
out += codecs.BOM_UTF8
buf = buf[bom_length:]
info = 'generated: true\n' if generated else 'vcsPath: {}\n'.format(orig_path)
if buf.startswith(b'---') and b'\n' in buf[3:] and buf[3:].rstrip(b'\r\n') == b'':
content = b''
found = False
while True:
line = fsrc.readline()
if len(line) == 0:
break
content += line
if line.startswith(b'---') and line[3:].rstrip(b'\r\n') == b'':
found = True
break
out += buf
if found:
out += info.encode('utf-8')
out += content
else:
out += '---\n{}---\n'.format(info).encode('utf-8')
out += buf
fdst.write(out)
shutil.copyfileobj(fsrc, fdst)
def main():
args = parse_args()
source_root = os.path.normpath(args.source_root) + os.path.sep
build_root = os.path.normpath(args.build_root) + os.path.sep
dst_dir = os.path.normpath(args.dst_dir)
assert dst_dir.startswith(build_root)
makedirs(dst_dir)
src_dir = os.path.normpath(args.src_dir) + os.path.sep
assert src_dir.startswith(source_root)
if src_dir.startswith(source_root):
root = source_root
is_from_source_root = True
elif src_dir.startswith(build_root):
root = build_root
is_from_source_root = False
else:
assert False, 'src_dir [{}] should start with [{}] or [{}]'.format(src_dir, source_root, build_root)
is_overwrite_existing = args.existing == 'overwrite'
for f in [os.path.normpath(f) for f in args.files]:
src_file = os.path.join(src_dir, f)
dst_file = os.path.join(dst_dir, f)
if src_file == dst_file:
continue
rel_path = src_file[len(root) :] if is_from_source_root else None
copy_file(src_file, dst_file, overwrite=is_overwrite_existing, orig_path=rel_path)
if __name__ == '__main__':
main()
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