def _read(self, fp, fpname):
        """Parse a sectioned setup file.

        The sections in setup file contains a title line at the top,
        indicated by a name in square brackets (`[]'), plus key/value
        options lines, indicated by `name: value' format lines.
        Continuations are represented by an embedded newline then
        leading whitespace.  Blank lines, lines beginning with a '#',
        and just about everything else are ignored.
        """
        in_section = False
        matching_section = False
        optname = None
        lineno = 0
        e = None                                  # None, or an exception
        while True:
            line = fp.readline()
            if not line:
                break
            if lineno == 0 and line.startswith(u('\ufeff')):
                line = line[1:]  # Strip UTF-8 BOM
            lineno = lineno + 1
            # comment or blank line?
            if line.strip() == '' or line[0] in '#;':
                continue
            # a section header or option header?
            else:
                # is it a section header?
                mo = self.SECTCRE.match(line)
                if mo:
                    sectname = mo.group('header')
                    in_section = True
                    matching_section = self.matches_filename(fpname, sectname)
                    # So sections can't start with a continuation line
                    optname = None
                # an option line?
                else:
                    mo = self.OPTCRE.match(line)
                    if mo:
                        optname, vi, optval = mo.group('option', 'vi', 'value')
                        if ';' in optval or '#' in optval:
                            # ';' and '#' are comment delimiters only if
                            # preceded by a spacing character
                            m = re.search('(.*?) [;#]', optval)
                            if m:
                                optval = m.group(1)
                        optval = optval.strip()
                        # allow empty values
                        if optval == '""':
                            optval = ''
                        optname = self.optionxform(optname.rstrip())
                        if not in_section and optname == 'root':
                            self.root_file = (optval.lower() == 'true')
                        if matching_section:
                            self.options[optname] = optval
                    else:
                        # a non-fatal parsing error occurred.  set up the
                        # exception but keep going. the exception will be
                        # raised at the end of the file and will contain a
                        # list of all bogus lines
                        if not e:
                            e = ParsingError(fpname)
                        e.append(lineno, repr(line))
        # if any parsing errors occurred, raise an exception
        if e:
            raise e
Parse a sectioned setup file.

        The sections in setup file contains a title line at the top,
        indicated by a name in square brackets (`[]'), plus key/value
        options lines, indicated by `name: value' format lines.
        Continuations are represented by an embedded newline then
        leading whitespace.  Blank lines, lines beginning with a '#',
        and just about everything else are ignored.
        
editorconfig/ini.py