rfc.quoted-printable - Quoted-printable encoding/decoding ¶This module defines a few functions to encode/decode Quoted-printable format, defined in RFC 2045 (https://www.ietf.org/rfc/rfc2045.txt), section 6.7.
{rfc.quoted-printable}
Reads byte stream from the current input port, encodes it in Quoted-printable
format and writes the result character stream to the current output port.
The conversion ends when it reads EOF from the current input port.
The keyword argument line-width specifies the maximum
line width of the generated output in characters. If the encoded
output creates a long line, the procedure inserts a “soft line break”
so that the each line is equal to or shorter than this number.
Soft line breaks are removed when quoted-printable text is
decoded.
The default line width is 76. (The minimum meaningful number of
line-width is 4). You can suppress soft line breaks by
giving #f or 0 to line-width.
By default, quoted-printable-encode generates CR-LF sequence
for each line break in the input (“hard line break”).
When a true value is given to the keyword argument binary,
however, octets #x0a and #x0d in the input are encoded
as =0A and =0D, respectively. See RFC2045 section 6.7
for the details.
{rfc.quoted-printable}
Converts content of message, which can be either a string
or a u8vector, to a string of Quoted-printable encoded format.
The keyword arguments are the same as quoted-printable-encode.
{rfc.quoted-printable}
Reads character stream from the current input port,
decodes it from Quoted-printable
format and writes the result byte stream to the current output port.
The conversion ends when it reads EOF.
If it encounters illegal character sequence (such as ’=’ followed
by non-hexadecimal characters), it copies them literally to the output.
{rfc.quoted-printable}
Decodes a Quoted-printable encoded string string, and returns
the result as an instance of target, which must be
either <string> or <u8vector>.
{rfc.quoted-printable}
Deprecated.
This is for the backward compatibility.
Use quoted-printable-encode-message instead.
{rfc.quoted-printable}
Deprecated.
This is for the backward compatibility. It is same as
(quoted-printable-decode-string-to <string> string).