X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=catagits%2FCatalyst-Runtime.git;a=blobdiff_plain;f=lib%2FCatalyst%2FDispatchType%2FRegex.pm;h=0d6da04b2f05bef060b5c84ae47a0b4cd19618cd;hp=a1224c594212cc4f65701bcf84de698af6c15381;hb=48d435ba6a0925260fd58c8c18ff425e99708eae;hpb=11bd4e3eaa29685c44318041381621e79c4a5f44

diff --git a/lib/Catalyst/DispatchType/Regex.pm b/lib/Catalyst/DispatchType/Regex.pm
index a1224c5..0d6da04 100644
--- a/lib/Catalyst/DispatchType/Regex.pm
+++ b/lib/Catalyst/DispatchType/Regex.pm
@@ -1,8 +1,20 @@
 package Catalyst::DispatchType::Regex;
 
-use strict;
-use base qw/Catalyst::DispatchType::Path/;
-use Text::ASCIITable;
+use Moose;
+extends 'Catalyst::DispatchType::Path';
+
+use Text::SimpleTable;
+use Catalyst::Utils;
+use Text::Balanced ();
+
+has _compiled => (
+                  is => 'rw',
+                  isa => 'ArrayRef',
+                  required => 1,
+                  default => sub{ [] },
+                 );
+
+no Moose;
 
 =head1 NAME
 
@@ -10,34 +22,51 @@ Catalyst::DispatchType::Regex - Regex DispatchType
 
 =head1 SYNOPSIS
 
-See L<Catalyst>.
+See L<Catalyst::DispatchType>.
 
 =head1 DESCRIPTION
 
-=head1 METHODS
+Dispatch type managing path-matching behaviour using regexes.  For
+more information on dispatch types, see:
 
 =over 4
 
-=item $self->list($c)
+=item * L<Catalyst::Manual::Intro> for how they affect application authors
+
+=item * L<Catalyst::DispatchType> for implementation information.
+
+=back
+
+=head1 METHODS
+
+=head2 $self->list($c)
+
+Output a table of all regex actions, and their private equivalent.
 
 =cut
 
 sub list {
     my ( $self, $c ) = @_;
-    my $re = Text::ASCIITable->new;
-    $re->setCols( 'Regex', 'Private' );
-    $re->setColWidth( 'Regex',   36, 1 );
-    $re->setColWidth( 'Private', 37, 1 );
-    for my $regex ( @{ $self->{compiled} } ) {
-        my $compiled = $regex->{re};
-        my $action   = $regex->{action};
-        $re->addRow( $compiled, "/$action" );
+    my $avail_width = Catalyst::Utils::term_width() - 9;
+    my $col1_width = ($avail_width * .50) < 35 ? 35 : int($avail_width * .50);
+    my $col2_width = $avail_width - $col1_width;
+    my $re = Text::SimpleTable->new(
+        [ $col1_width, 'Regex' ], [ $col2_width, 'Private' ]
+    );
+    for my $regex ( @{ $self->_compiled } ) {
+        my $action = $regex->{action};
+        $re->row( $regex->{path}, "/$action" );
     }
-    $c->log->debug( "Loaded Regex actions:\n" . $re->draw )
-      if ( @{ $re->{tbl_rows} } );
+    $c->log->debug( "Loaded Regex actions:\n" . $re->draw . "\n" )
+      if ( @{ $self->_compiled } );
 }
 
-=item $self->match( $c, $path )
+=head2 $self->match( $c, $path )
+
+Checks path against every compiled regex, and offers the action for any regex
+which matches a chance to match the request. If it succeeds, sets action,
+match and captures on $c->req and returns 1. If not, returns 0 without
+altering $c.
 
 =cut
 
@@ -48,11 +77,12 @@ sub match {
 
     # Check path against plain text first
 
-    foreach my $compiled ( @{ $self->{compiled} || [] } ) {
-        if ( my @snippets = ( $path =~ $compiled->{re} ) ) {
+    foreach my $compiled ( @{ $self->_compiled } ) {
+        if ( my @captures = ( $path =~ $compiled->{re} ) ) {
+            next unless $compiled->{action}->match($c);
             $c->req->action( $compiled->{path} );
             $c->req->match($path);
-            $c->req->snippets( \@snippets );
+            $c->req->captures( \@captures );
             $c->action( $compiled->{action} );
             $c->namespace( $compiled->{action}->namespace );
             return 1;
@@ -62,39 +92,93 @@ sub match {
     return 0;
 }
 
-=item $self->register( $c, $action )
+=head2 $self->register( $c, $action )
+
+Registers one or more regex actions for an action object.
+Also registers them as literal paths.
+
+Returns 1 if any regexps were registered.
 
 =cut
 
 sub register {
     my ( $self, $c, $action ) = @_;
-    my $attrs = $action->attributes;
-    my @register = map { @{ $_ || [] } } @{$attrs}{ 'Regex', 'Regexp' };
+    my $attrs    = $action->attributes;
+    my @register = @{ $attrs->{'Regex'} || [] };
+
     foreach my $r (@register) {
-        $self->{paths}{$r} = $action;    # Register path for superclass
-        push(
-            @{ $self->{compiled} },      # and compiled regex for us
-            {
-                re     => qr#$r#,
-                action => $action,
-                path   => $r,
-            }
-        );
+        $self->register_path( $c, $r, $action );
+        $self->register_regex( $c, $r, $action );
     }
+
+    return 1 if @register;
+    return 0;
 }
 
-=back
+=head2 $self->register_regex($c, $re, $action)
 
-=head1 AUTHOR
+Register an individual regex on the action. Usually called from the
+register method.
 
-Matt S Trout
-Sebastian Riedel, C<sri@cpan.org>
+=cut
+
+sub register_regex {
+    my ( $self, $c, $re, $action ) = @_;
+    push(
+        @{ $self->_compiled },    # and compiled regex for us
+        {
+            re     => qr#$re#,
+            action => $action,
+            path   => $re,
+        }
+    );
+}
+
+=head2 $self->uri_for_action($action, $captures)
+
+returns a URI for this action if it can find a regex attributes that contains
+the correct number of () captures. Note that this may function incorrectly
+in the case of nested captures - if your regex does (...(..))..(..) you'll
+need to pass the first and third captures only.
+
+=cut
+
+sub uri_for_action {
+    my ( $self, $action, $captures ) = @_;
+
+    if (my $regexes = $action->attributes->{Regex}) {
+        REGEX: foreach my $orig (@$regexes) {
+            my $re = "$orig";
+            $re =~ s/^\^//;
+            $re =~ s/\$$//;
+            my $final = '/';
+            my @captures = @$captures;
+            while (my ($front, $rest) = split(/\(/, $re, 2)) {
+                last unless defined $rest;
+                ($rest, $re) =
+                    Text::Balanced::extract_bracketed("(${rest}", '(');
+                next REGEX unless @captures;
+                $final .= $front.shift(@captures);
+            }
+            $final .= $re;
+            next REGEX if @captures;
+            return $final;
+         }
+    }
+    return undef;
+}
+
+=head1 AUTHORS
+
+Catalyst Contributors, see Catalyst.pm
 
 =head1 COPYRIGHT
 
-This program is free software, you can redistribute it and/or modify it under
+This library is free software. You can redistribute it and/or modify it under
 the same terms as Perl itself.
 
 =cut
 
+__PACKAGE__->meta->make_immutable;
+
 1;