core.py 文件源码

def _dump(obj, indent):
    if isinstance(obj, Mapping):
        new_indent = indent + '  '
        items = []
        for k, v in sorted(obj.items()):
            items.append(
                '\n' + new_indent + "'" + k + "': " + _dump(v, new_indent))
        return '{' + ','.join(items) + '}'
    elif isinstance(obj, bool):
        return 'true' if obj else 'false'
    elif isinstance(obj, list):
        new_indent = indent + '  '
        b = ','.join('\n' + new_indent + _dump(v, new_indent) for v in obj)
        return '[' + b + ']'
    elif isinstance(obj, (int, float, Decimal)):
        return str(obj)
    elif obj is None:
        return 'null'
    elif isinstance(obj, str):
        quote = LONG_QUOTE if '\n' in obj or '\r' in obj else SHORT_QUOTE
        return quote + obj + quote
    elif isinstance(obj, bytearray):
        return '{{ ' + b64encode(obj).decode() + ' }}'
    elif isinstance(obj, bytes):
        return "{{ '" + obj.decode() + "' }}"
    elif isinstance(obj, Datetime):
        if obj.tzinfo is None or obj.tzinfo == Timezone.utc:
            fmt = UTC_FORMAT
        else:
            fmt = TZ_FORMAT
        return obj.strftime(fmt)
    else:
        raise PionException("Type " + str(type(obj)) + " not recognised.")