Perl

Load a MessageSet from a Compact String

Demonstrates the Chilkat MessageSet.FromCompactString method, which clears the set and loads message identifiers from compact IMAP message-set syntax. The only argument is the compact string: a colon specifies an inclusive ascending range, and commas separate values or ranges. This example loads 1:5,8:10 and prints the result as a comma-separated list.

Background: Compact message-set syntax is how IMAP itself expresses groups of messages — 1:5,8:10 is far more concise than listing every id. FromCompactString is the inverse of ToCompactString: it parses that text into a set you can pass to Imap methods. Duplicates are removed, identifiers are sorted ascending, and the existing HasUids setting is preserved. Note the string carries only the numbers — it does not record whether they are UIDs or sequence numbers.

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use strict;
use warnings;
use Chilkat2;

# Demonstrates the MessageSet.FromCompactString method, which loads a set of message
# identifiers from compact IMAP message-set syntax.  The only argument is the compact string.
# A colon specifies an inclusive range, and commas separate values or ranges.

my $msgSet = Chilkat2::MessageSet->new;

# Load a compact message set.  "1:5,8:10" expands to 1,2,3,4,5,8,9,10.
my $success = $msgSet->FromCompactString('1:5,8:10');
if (!$success) {
    print $msgSet->LastErrorText, "\n";
    exit;
}

print 'Count: ', $msgSet->Count, "\n";

# Show the loaded identifiers in comma-separated form.
my $csv = $msgSet->ToCommaSeparatedStr();
print $csv, "\n";