decode quoted-printable text
How can I decode a 'quoted-printable' text in rebol ?
Thanks !!
posted by: LM 7-Jun-2016/5:08:48-7:00
This is an overly simplistic approach that works in Rebol 2 though is broken in Rebol 3 (due to DEHEX being broken):
dehex replace/all replace/all quoted-printable-string "%" "=25" "=" "%"
posted by: Chris 7-Jun-2016/13:52:15-7:00
Here's a Rebol 2 function for that.
R E B O L [
Title: "decode-quoted-printable"
File: %decode-quoted-printable.r
Author: "Brett Handley"
web: http://www.codeconscious.com
Date: 25-Aug-2002
Purpose: "Decodes text that has been encode using the quoted printable method."
]
decode-quoted-printable: function [
"Decodes quoted-printable encoded data."
data [string! binary!]
] [decoded-data hex-rep data-char hex-char ws-char ordinary-char] [
decoded-data: hex-rep: data-char: none
hex-char: charset "0123456789ABCDEFabcdef"
ws-char: charset {^- }
ordinary-char: complement charset [] ; Ignoring illegal characters for the moment.
if parse/all data [
(decoded-data: copy #{})
some [
"=3D" (insert tail decoded-data #"=")
| "=20" (insert tail decoded-data #" ")
| "=^/"
| "=0A" (insert tail decoded-data #"^/")
| [copy hex-rep ["=" 2 hex-char] (insert tail decoded-data dehex head change hex-rep #"%")]
| ; Ignore linespace at the end of the line - it must have been added by an MTA see RFC 2045
some ws-char copy data-char [CRLF | newline] (insert tail decoded-data data-char)
| copy data-char ordinary-char (insert tail decoded-data data-char)
]
| end
] [to-string decoded-data]
]
posted by: Brett 8-Jun-2016/17:44:14-7:00
|