=head1 NAME
Mail::Box::Search::Grep - select messages within a mail box like grep does
=head1 INHERITANCE
Mail::Box::Search::Grep
is a Mail::Box::Search
is a Mail::Reporter
=head1 SYNOPSIS
use Mail::Box::Manager;
my $mgr = Mail::Box::Manager->new;
my $folder = $mgr->open('Inbox');
my $filter = Mail::Box::Search::Grep->new
( label => 'selected'
, in => 'BODY', match => qr/abc?d*e/
);
my @msgs = $filter->search($folder);
my $filter = Mail::Box::Search::Grep->new
( field => 'To'
, match => $my_email
);
if($filter->search($message)) {...}
=head1 DESCRIPTION
Try to find some text strings in the header and footer of messages. Various
ways to limit the search to certain header fields, the whole header, only
the body, the whole message, but even binary multiparts, are provided for.
The name I<grep> is derived from the UNIX tool I<grep>, which means: "Get
Regular Expression and Print". Although you can search using regular
expressions (the Perl way of them), you do not have to print those as
result.
=head1 METHODS
=head2 Constructors
Mail::Box::Search::Grep-E<gt>B<new>(OPTIONS)
=over 4
Create a UNIX-grep like search filter.
Option --Defined in --Default
binaries Mail::Box::Search <false>
decode Mail::Box::Search <true>
delayed Mail::Box::Search <true>
deleted Mail::Box::Search <false>
deliver undef
field undef
in Mail::Box::Search <$field ? 'HEAD' : C<'BODY'>>
label Mail::Box::Search undef
limit Mail::Box::Search 0
log Mail::Reporter 'WARNINGS'
logical Mail::Box::Search 'REPLACE'
match <required>
multiparts Mail::Box::Search <true>
trace Mail::Reporter 'WARNINGS'
. binaries => BOOLEAN
. decode => BOOLEAN
. delayed => BOOLEAN
. deleted => BOOLEAN
. deliver => undef|CODE|'DELETE'|LABEL|'PRINT'|REF-ARRAY
=over 4
Store the details about where the match was found. The search may take
much longer when this feature is enabled.
When an ARRAY is specified it will contain a list of references to hashes.
Each hash contains the information of one match. A match in a header
line will result in a line with fields C<message>, C<part>, and C<field>, where
the field is a L<Mail::Message::Field|Mail::Message::Field> object. When the match is in
the body the hash will contain a C<message>, C<part>, C<linenr>, and C<line>.
In case of a CODE reference, that routine is called for each match. The
first argument is this search object and the second a reference to same
hash as would be stored in the array.
The C<PRINT> will call L<printMatchedHead()|Mail::Box::Search::Grep/"The Results"> or L<printMatchedBody()|Mail::Box::Search::Grep/"The Results"> when
any matching header resp body line was found. The output is minimized
by not reprinting the message info on multiple matches in the same
message.
C<DELETE> will flag
the message to be deleted in case of a match. When a multipart's part
is matched, the whole message will be flagged for deletion.
=back
. field => undef|STRING|REGEX|CODE
=over 4
Not valid in combination with C<in> set to C<BODY>.
The STRING is one full field name (case-insensitive). Use a REGEX
to select more than one header line to be scanned. CODE is a routine which
is called for each field in the header. The CODE is called with the header
as first, and the field as second argument. If the CODE returns true, the
message is selected.
=back
. in => 'HEAD'|'BODY'|'MESSAGE'
. label => STRING
. limit => NUMBER
. log => LEVEL
. logical => 'REPLACE'|'AND'|'OR'|'NOT'|'AND NOT'|'OR NOT'
. match => STRING|REGEX|CODE
=over 4
The pattern to be search for can be a REGular EXpression, or a STRING. In
both cases, the match succeeds if it is found anywhere within the selected
fields.
With a CODE reference, that function will be called each field or body-line.
When the result is true, the details are delivered. The call formats are
$code->($head, $field); # for HEAD searches
$code->($body, $linenr, $line); # for BODY searches
The C<$head> resp C<$body> are one message's head resp. body object. The
C<$field> is a header line which matches. The C<$line> and C<$linenr>
tell the matching line in the body.
Be warned that when you search in C<MESSAGE> the code must accept
both formats.
=back
. multiparts => BOOLEAN
. trace => LEVEL
=back
=head2 Searching
$obj-E<gt>B<inBody>(PART, BODY)
=over 4
See L<Mail::Box::Search/"Searching">
=back
$obj-E<gt>B<inHead>(PART, HEAD)
=over 4
See L<Mail::Box::Search/"Searching">
=back
$obj-E<gt>B<search>(FOLDER|THREAD|MESSAGE|ARRAY-OF-MESSAGES)
=over 4
See L<Mail::Box::Search/"Searching">
=back
$obj-E<gt>B<searchPart>(PART)
=over 4
See L<Mail::Box::Search/"Searching">
=back
=head2 The Results
$obj-E<gt>B<printMatch>([FILEHANDLE], HASH)
=over 4
See L<Mail::Box::Search/"The Results">
=back
$obj-E<gt>B<printMatchedBody>(FILEHANDLE, MATCH)
=over 4
=back
$obj-E<gt>B<printMatchedHead>(FILEHANDLE, MATCH)
=over 4
=back
=head2 Error handling
$obj-E<gt>B<AUTOLOAD>
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<addReport>(OBJECT)
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<defaultTrace>([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])
Mail::Box::Search::Grep-E<gt>B<defaultTrace>([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<errors>
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<log>([LEVEL [,STRINGS]])
Mail::Box::Search::Grep-E<gt>B<log>([LEVEL [,STRINGS]])
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<logPriority>(LEVEL)
Mail::Box::Search::Grep-E<gt>B<logPriority>(LEVEL)
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<logSettings>
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<notImplemented>
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<report>([LEVEL])
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<reportAll>([LEVEL])
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<trace>([LEVEL])
=over 4
See L<Mail::Reporter/"Error handling">
=back
$obj-E<gt>B<warnings>
=over 4
See L<Mail::Reporter/"Error handling">
=back
=head2 Cleanup
$obj-E<gt>B<DESTROY>
=over 4
See L<Mail::Reporter/"Cleanup">
=back
$obj-E<gt>B<inGlobalDestruction>
=over 4
See L<Mail::Reporter/"Cleanup">
=back
=head1 DIAGNOSTICS
Error: Package $package does not implement $method.
=over 4
Fatal error: the specific package (or one of its superclasses) does not
implement this method where it should. This message means that some other
related classes do implement this method however the class at hand does
not. Probably you should investigate this and probably inform the author
of the package.
=back
=head1 SEE ALSO
This module is part of Mail-Box distribution version 2.079,
built on November 28, 2007. Website: F<http://perl.overmeer.net/mailbox/>
=head1 LICENSE
Copyrights 2001-2007 by Mark Overmeer. For other contributors see ChangeLog.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See F<http://www.perl.com/perl/misc/Artistic.html>
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