assemble.py 文件源码

def _assemble_from_fragments(self, src_path, delimiter=None, compiled_regexp=None, ignore_hidden=False):
        ''' assemble a file from a directory of fragments '''

        tmpfd, temp_path = tempfile.mkstemp()
        tmp = os.fdopen(tmpfd, 'wb')
        delimit_me = False
        add_newline = False

        for f in (to_text(p, errors='surrogate_or_strict') for p in sorted(os.listdir(src_path))):
            if compiled_regexp and not compiled_regexp.search(f):
                continue
            fragment = u"%s/%s" % (src_path, f)
            if not os.path.isfile(fragment) or (ignore_hidden and os.path.basename(fragment).startswith('.')):
                continue

            fragment_content = open(self._loader.get_real_file(fragment), 'rb').read()

            # always put a newline between fragments if the previous fragment didn't end with a newline.
            if add_newline:
                tmp.write(b'\n')

            # delimiters should only appear between fragments
            if delimit_me:
                if delimiter:
                    # un-escape anything like newlines
                    delimiter = codecs.escape_decode(delimiter)[0]
                    tmp.write(delimiter)
                    # always make sure there's a newline after the
                    # delimiter, so lines don't run together
                    if delimiter[-1] != b'\n':
                        tmp.write(b'\n')

            tmp.write(fragment_content)
            delimit_me = True
            if fragment_content.endswith(b'\n'):
                add_newline = False
            else:
                add_newline = True

        tmp.close()
        return temp_path