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# Copyright (C) 2008-2010, Sebastian Riedel.
package Mojo::Path;
use strict;
use warnings;
use base 'Mojo::Base';
use overload '""' => sub { shift->to_string }, fallback => 1;
use Mojo::ByteStream 'b';
use Mojo::URL;
__PACKAGE__->attr([qw/leading_slash trailing_slash/] => 0);
__PACKAGE__->attr(parts => sub { [] });
sub new {
my $self = shift->SUPER::new();
$self->parse(@_);
return $self;
}
sub append {
my $self = shift;
for (@_) {
my $value = "$_";
# *( pchar / "/" / "?" )
$value = b($value)->url_escape($Mojo::URL::PCHAR)->to_string;
push @{$self->parts}, $value;
}
return $self;
}
sub canonicalize {
my $self = shift;
# Resolve path
my @path;
for my $part (@{$self->parts}) {
# ".."
if ($part eq '..') {
# Leading '..' can't be resolved
unless (@path && $path[-1] ne '..') { push @path, '..' }
# Uplevel
else { pop @path }
next;
}
# "."
next if $part eq '.';
# Part
push @path, $part;
}
$self->parts(\@path);
return $self;
}
# Homer, the plant called.
# They said if you don't show up tomorrow don't bother showing up on Monday.
# Woo-hoo. Four-day weekend.
sub clone {
my $self = shift;
my $clone = Mojo::Path->new;
$clone->parts([@{$self->parts}]);
$clone->leading_slash($self->leading_slash);
$clone->trailing_slash($self->trailing_slash);
return $clone;
}
sub parse {
my ($self, $path) = @_;
$path ||= '';
# Meta
$self->leading_slash(1) if $path =~ /^\//;
$self->trailing_slash(1) if $path =~ /\/$/;
# Unescape
$path = b($path)->url_unescape($Mojo::URL::PCHAR)->to_string;
# Parse
my @parts;
for my $part (split '/', $path) {
# Empty parts before the first are garbage
next unless length $part or scalar @parts;
# Empty parts behind the first are ok
$part = '' unless defined $part;
# Store
push @parts, $part;
}
$self->parts(\@parts);
return $self;
}
sub to_string {
my $self = shift;
# Escape
my @path;
for my $part (@{$self->parts}) {
# *( pchar / "/" / "?" )
push @path, b($part)->url_escape($Mojo::URL::PCHAR)->to_string;
}
# Format
my $path = join '/', @path;
$path = "/$path" if $self->leading_slash;
$path = "$path/" if @path && $self->trailing_slash;
return $path;
}
1;
__END__
=head1 NAME
Mojo::Path - Path
=head1 SYNOPSIS
use Mojo::Path;
my $path = Mojo::Path->new('/foo/bar%3B/baz.html');
print "$path";
=head1 DESCRIPTION
L<Mojo::Path> is a container for URL paths.
=head1 ATTRIBUTES
L<Mojo::Path> implements the following attributes.
=head2 C<leading_slash>
my $leading_slash = $path->leading_slash;
$path = $path->leading_slash(1);
Path has a leading slash.
=head2 C<parts>
my $parts = $path->parts;
$path = $path->parts(qw/foo bar baz/);
The path parts.
=head2 C<trailing_slash>
my $trailing_slash = $path->trailing_slash;
$path = $path->trailing_slash(1);
Path has a trailing slash.
=head1 METHODS
L<Mojo::Path> inherits all methods from L<Mojo::Base> and implements the
following new ones.
=head2 C<new>
my $path = Mojo::Path->new;
my $path = Mojo::Path->new('/foo/bar%3B/baz.html');
Construct a new L<Mojo::Path> object.
=head2 C<append>
$path = $path->append(qw/foo bar/);
Append parts to path.
=head2 C<canonicalize>
$path = $path->canonicalize;
Canonicalize path.
=head2 C<clone>
my $clone = $path->clone;
Clone path.
=head2 C<parse>
$path = $path->parse('/foo/bar%3B/baz.html');
Parse path.
=head2 C<to_string>
my $string = $path->to_string;
Turn path into a string.
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicious.org>.
=cut
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