Re^2: Splitting folded MIME headers into indivual headers?

How would that work? A folded header line does contain one single \n, and then the next line begins with any whitespace. A newline (\n) followed by a non-whitespace is the beginning of a new header.

The whitespace a folded line begins with, may not neccessarly be a \n. In face \n would not be permitted, because a double \n (\n\n) would mark the start of body

Example of a non-folded header line, combined with a folded header line combined with a non-folded one:

Subject: Hi you are beutiful
Content-Type: text/plain;
    format=flowed;
    charset="iso-8859-1";
    reply-type=original
Return-Path: <example@example.org>
[download]

This should result in:

$fixedheaders[0] = "Subject: Hi you are beutiful";
$fixedheaders[1] = "Content-Type: text/plain;\tformat=flowed;\tcharset
+=\"iso-8859-1\";\treply-type=original";
$fixedheaders[2] = "Return-Path: <example@example.org>";
[download]

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Re^3: Splitting folded MIME headers into indivual headers? by roboticus (Chancellor) on Mar 02, 2015 at 21:06 UTC
sebastiannielsen2: In that case, I'd use: `@fixedheaders = split /\n\b/, $fixedmsgheader;` Update: checked my work with a test program: `cat splitest.pl #!/usr/bin/env perl use strict; use warnings; my $t = q{ Subject: Hi there Content-Type: text/plain; format=flowed; charset="iso-1189-1"; Return-Path: <example@example.org> }; my @fields = split /\n\b/, $t; print join("\n*\n", @fields), "\n"; localadmins-MacBook-Pro-2:~ [mmason] $ perl splitest.pl * Subject: Hi there * Content-Type: text/plain; format=flowed; charset="iso-1189-1"; * Return-Path: <example@example.org>` [download] ...roboticus When your only tool is a hammer, all problems look like your thumb.	[reply] [d/l] [select]
Re^3: Splitting folded MIME headers into indivual headers? by sebastiannielsen2 (Novice) on Mar 02, 2015 at 21:02 UTC
OOps the result was a Little bit wrong. It should be: `$fixedheaders[0] = "Subject: Hi you are beutiful"; $fixedheaders[1] = "Content-Type: text/plain;\n\tformat=flowed;\n\tcha +rset +=\"iso-8859-1\";\n\treply-type=original"; $fixedheaders[2] = "Return-Path: <example@example.org>";` [download] Eg with newlines Before the tabs.	[reply] [d/l]