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Perl Examples

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(Perl) Parse MIME Header Fields

Demonstrates how to parse MIME header fields, including Content-Type, Content-Disposition, and Content-Transfer-Encoding.

This example uses a MIME test file located at http://www.chilkatsoft.com/testData/sampleMime2.txt. It contains the following MIME:

Content-Type: multipart/mixed;
 boundary="------------080707010302060306060800";

This is a multi-part message in MIME format.

--------------080707010302060306060800
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

This is the plain-text body.
--------------080707010302060306060800
Content-Disposition: attachment; filename="starfish.gif";
Content-Transfer-Encoding: base64
Content-Type: image/gif; name="starfish.gif";
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--------------080707010302060306060800--

Chilkat Perl Downloads

Perl Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

use chilkat();

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$mime = chilkat::CkMime->new();

# Load the sampleMime2.txt file into the MIME object.
# (This file is available at http://www.chilkatsoft.com/testData/sampleMime2.txt )

$success = $mime->LoadMimeFile("sampleMime2.txt");
if ($success == 0) {
    print $mime->lastErrorText() . "\r\n";
    exit;
}

# The GIF image is the 2nd sub-part located directly under the
# top-level MIME node.  Indexing begins at 0, therefore the 2nd
# sub-part is at index 1.

# part2 is a Mime
$part2 = $mime->GetPart(1);

# -------------------------------
# Content-Disposition
# -------------------------------
# In this example, the Content-Disposition header field
# contains this value:
# attachment; filename="starfish.gif"

# To get the "filename", call GetHeaderFieldAttribute
# Header field names and attribute names are case insensitive.
$filename = $part2->getHeaderFieldAttribute("Content-Disposition","filename");
print "Filename: " . $filename . "\r\n";

# Because the "filename" is so often accessed, it is also available
# by accessing the "Filename" property:
print "Filename: " . $part2->filename() . "\r\n";

# The disposition (without attributes) which in this case 
# is the string "attachment" is accessed via the Disposition property:
print "Disposition: " . $part2->disposition() . "\r\n";

# To get the full value of the Content-Disposition header field,
# call GetHeaderField.
print "Content-Disposition: " . $part2->getHeaderField("Content-Disposition") . "\r\n";

# -------------------------------
# Content-Type
# -------------------------------
# In this example, the Content-Type header field
# contains this value:
# image/gif; name="starfish.gif"

# To get the "name", call GetHeaderFieldAttribute
$name = $part2->getHeaderFieldAttribute("Content-Type","name");
print "Content-Type name: " . $name . "\r\n";

# Because the "name" is so often accessed, it is also available
# by accessing the "Name" property:
print "Content-Type name: " . $part2->name() . "\r\n";

# The content-type without attributes is available in the
# ContentType property:
print "Content-Type: " . $part2->contentType() . "\r\n";

# To get the full value of the Content-Type header field,
# call GetHeaderField.
print "Content-Type: " . $part2->getHeaderField("Content-Type") . "\r\n";

# -------------------------------
# Content-Transfer-Encoding
# -------------------------------

# The Encoding property contains the value of the
# Content-Transfer-Encoding property. 
# Calling GetHeaderField("Content-Transfer-Encoding") is
# equivalent to accessing the Encoding property:
print "Content-Transfer-Encoding: " . $part2->encoding() . "\r\n";
print "Content-Transfer-Encoding: " . $part2->getHeaderField("Content-Transfer-Encoding") . "\r\n";

print "Finished." . "\r\n";

 

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