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For file format QR code.

See original GitHub issue

I made a simple wrapper to handle the file format QR code:

def _decode(self, filename):
    try:
        # the origin code
        cmd = ' '.join([self.command, self.lib_path, 'file:///' + filename, '--multi'])
        (stdout, _) = subprocess.Popen(cmd,
                                        stdout=subprocess.PIPE,
                                        universal_newlines=True,
                                        shell=True).communicate()
        lines = stdout.splitlines()
        separator_idx = [
            i for i in range(len(lines)) if lines[i][:4] == 'file'
        ] + [len(lines)]

        result = [
            self._parse_single(lines[separator_idx[i]:separator_idx[i + 1]])
            for i in range(len(separator_idx) - 1)
        ]
    except:
        # my add-in code
        cmd = ' '.join([self.command, self.lib_path, 'file:///' + filename, '--multi'])
        (lines, _) = subprocess.Popen(cmd,
                                    stdout=subprocess.PIPE,
                                    stderr=subprocess.PIPE).communicate()
        result = lines[lines.index(b'Raw result:\n')+len(b'Raw result:\n'):lines.index(b'\nFound')]
    return result

This will return the ‘Raw result’ bytes while the result can’t be decoded with the default character set.