writers.py 文件源码

def as_svg_data_uri(matrix, version, scale=1, border=None, color='#000',
                    background=None, xmldecl=False, svgns=True, title=None,
                    desc=None, svgid=None, svgclass='segno',
                    lineclass='qrline', omitsize=False, unit='',
                    encoding='utf-8', svgversion=None, nl=False,
                    encode_minimal=False, omit_charset=False):
    """\
    Converts the matrix to a SVG data URI.

    The XML declaration is omitted by default (set ``xmldecl`` to ``True``
    to enable it), further the newline is omitted by default (set ``nl`` to
    ``True`` to enable it).

    Aside from the missing ``out`` parameter and the different ``xmldecl``
    and ``nl`` default values and the additional parameter ``encode_minimal``
    and ``omit_charset`` this function uses the same parameters as the
    usual SVG serializer.

    :param bool encode_minimal: Indicates if the resulting data URI should
                    use minimal percent encoding (disabled by default).
    :param bool omit_charset: Indicates if the ``;charset=...`` should be omitted
                    (disabled by default)
    :rtype: str
    """
    encode = partial(quote, safe=b"") if not encode_minimal else partial(quote, safe=b" :/='")
    buff = io.BytesIO()
    write_svg(matrix, version, buff, scale=scale, color=color, background=background,
              border=border, xmldecl=xmldecl, svgns=svgns, title=title,
              desc=desc, svgclass=svgclass, lineclass=lineclass,
              omitsize=omitsize, encoding=encoding, svgid=svgid, unit=unit,
              svgversion=svgversion, nl=nl)
    return 'data:image/svg+xml{0},{1}' \
                .format(';charset=' + encoding if not omit_charset else '',
                        # Replace " quotes with ' and URL encode the result
                        # See also https://codepen.io/tigt/post/optimizing-svgs-in-data-uris
                        encode(_replace_quotes(buff.getvalue())))