/usr/share/perl5/Mojolicious/Routes/Pattern.pm is in libmojolicious-perl 2.23-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 | package Mojolicious::Routes::Pattern;
use Mojo::Base -base;
has defaults => sub { {} };
has format => sub {qr#\.([^/]+)$#};
has [qw/pattern regex/];
has quote_end => ')';
has quote_start => '(';
has relaxed_start => '.';
has reqs => sub { {} };
has symbol_start => ':';
has symbols => sub { [] };
has tree => sub { [] };
has wildcard_start => '*';
# "This is the worst kind of discrimination. The kind against me!"
sub new { shift->SUPER::new()->parse(@_) }
sub match {
my ($self, $path) = @_;
my $result = $self->shape_match(\$path);
return $result if !$path || $path eq '/';
return;
}
sub parse {
my $self = shift;
my $pattern = shift;
# Make sure we have a viable pattern
return $self if !defined $pattern || $pattern eq '/';
$pattern = "/$pattern" unless $pattern =~ m#^/#;
# Requirements
my $reqs = ref $_[0] eq 'HASH' ? $_[0] : {@_};
$self->reqs($reqs);
# Format in pattern
if ($pattern =~ m#\.([^/\)]+)$#) {
$reqs->{format} = quotemeta($self->{strict} = $1);
}
# Tokenize
$self->pattern($pattern);
$self->_tokenize;
return $self;
}
sub render {
my ($self, $values) = @_;
$values ||= {};
# Merge values with defaults
$values = {%{$self->defaults}, %$values};
# Turn pattern into path
my $string = '';
my $optional = 1;
for my $token (reverse @{$self->tree}) {
my $op = $token->[0];
my $rendered = '';
# Slash
if ($op eq 'slash') { $rendered = '/' unless $optional }
# Text
elsif ($op eq 'text') {
$rendered = $token->[1];
$optional = 0;
}
# Relaxed, symbol or wildcard
elsif ($op ~~ [qw/relaxed symbol wildcard/]) {
my $name = $token->[1];
$rendered = $values->{$name} // '';
my $default = $self->defaults->{$name};
if (!defined $default || ($default ne $rendered)) { $optional = 0 }
elsif ($optional) { $rendered = '' }
}
$string = "$rendered$string";
}
return $string || '/';
}
sub shape_match {
my ($self, $pathref, $detect) = @_;
# Compile on demand
my $regex;
$regex = $self->_compile unless $regex = $self->regex;
# Match
return unless my @captures = $$pathref =~ $regex;
$$pathref =~ s/($regex)//;
# Merge captures
my $result = {%{$self->defaults}};
for my $symbol (@{$self->symbols}) {
last unless @captures;
my $capture = shift @captures;
$result->{$symbol} = $capture if defined $capture;
}
# Format
$result->{format} ||= $self->{strict} if $detect && exists $self->{strict};
my $req = $self->reqs->{format};
return $result if defined $req && !$req;
my $format = $self->format;
if ($detect && $$pathref =~ s|^/?$format||) { $result->{format} ||= $1 }
elsif ($req) { return if !$result->{format} }
return $result;
}
sub _compile {
my $self = shift;
# Compile format regular expression
my $reqs = $self->reqs;
if (!exists $reqs->{format} || $reqs->{format}) {
my $format =
defined $reqs->{format} ? _compile_req($reqs->{format}) : '([^/]+)';
$self->format(qr#\.$format$#);
}
# Compile tree to regular expression
my $block = '';
my $regex = '';
my $optional = 1;
my $defaults = $self->defaults;
for my $token (reverse @{$self->tree}) {
my $op = $token->[0];
my $compiled = '';
# Slash
if ($op eq 'slash') {
# Full block
$block = $optional ? "(?:/$block)?" : "/$block";
$regex = "$block$regex";
$block = '';
next;
}
# Text
elsif ($op eq 'text') {
$compiled = quotemeta $token->[1];
$optional = 0;
}
# Symbol
elsif ($op ~~ [qw/relaxed symbol wildcard/]) {
my $name = $token->[1];
unshift @{$self->symbols}, $name;
# Relaxed
if ($op eq 'relaxed') { $compiled = '([^\/]+)' }
# Symbol
elsif ($op eq 'symbol') { $compiled = '([^\/\.]+)' }
# Wildcard
elsif ($op eq 'wildcard') { $compiled = '(.+)' }
# Custom regex
my $req = $reqs->{$name};
$compiled = _compile_req($req) if $req;
# Optional placeholder
$optional = 0 unless exists $defaults->{$name};
$compiled .= '?' if $optional;
}
# Add to block
$block = "$compiled$block";
}
# Not rooted with a slash
$regex = "$block$regex" if $block;
# Compile
$regex = qr/^$regex/;
$self->regex($regex);
return $regex;
}
# "Interesting... Oh no wait, the other thing, tedious."
sub _compile_req {
my $req = shift;
return "($req)" if !ref $req || ref $req ne 'ARRAY';
return '(' . join('|', map {quotemeta} reverse sort @$req) . ')';
}
sub _tokenize {
my $self = shift;
# Token
my $quote_end = $self->quote_end;
my $quote_start = $self->quote_start;
my $relaxed_start = $self->relaxed_start;
my $symbol_start = $self->symbol_start;
my $wildcard_start = $self->wildcard_start;
# Parse the pattern character wise
my $pattern = $self->pattern;
my $tree = [];
my $state = 'text';
my $quoted = 0;
while (length(my $char = substr $pattern, 0, 1, '')) {
# Inside a symbol
my $symbol = $state ~~ [qw/relaxed symbol wildcard/] ? 1 : 0;
# Quote start
if ($char eq $quote_start) {
$quoted = 1;
$state = 'symbol';
push @$tree, ['symbol', ''];
next;
}
# Symbol start
if ($char eq $symbol_start) {
push @$tree, ['symbol', ''] if $state ne 'symbol';
$state = 'symbol';
next;
}
# Relaxed start (needs to be quoted)
if ($quoted && $char eq $relaxed_start && $state eq 'symbol') {
$state = 'relaxed';
$tree->[-1]->[0] = 'relaxed';
next;
}
# Wildcard start (upgrade when quoted)
if ($char eq $wildcard_start) {
push @$tree, ['symbol', ''] unless $quoted;
$state = 'wildcard';
$tree->[-1]->[0] = 'wildcard';
next;
}
# Quote end
if ($char eq $quote_end) {
$quoted = 0;
$state = 'text';
next;
}
# Slash
if ($char eq '/') {
push @$tree, ['slash'];
$state = 'text';
next;
}
# Relaxed, symbol or wildcard
elsif ($symbol && $char =~ /\w/) {
$tree->[-1]->[-1] .= $char;
next;
}
# Text
else {
$state = 'text';
# New text element
unless ($tree->[-1]->[0] eq 'text') {
push @$tree, ['text', $char];
next;
}
# More text
$tree->[-1]->[-1] .= $char;
}
}
$self->tree($tree);
return $self;
}
1;
__END__
=head1 NAME
Mojolicious::Routes::Pattern - Routes pattern engine
=head1 SYNOPSIS
use Mojolicious::Routes::Pattern;
# Create pattern
my $pattern = Mojolicious::Routes::Pattern->new('/test/:name');
# Match routes
my $result = $pattern->match('/test/sebastian');
say $result->{name};
=head1 DESCRIPTION
L<Mojolicious::Routes::Pattern> is the core of L<Mojolicious::Routes>.
=head1 ATTRIBUTES
L<Mojolicious::Routes::Pattern> implements the following attributes.
=head2 C<defaults>
my $defaults = $pattern->defaults;
$pattern = $pattern->defaults({foo => 'bar'});
Default parameters.
=head2 C<format>
my $regex = $pattern->format;
$pattern = $pattern->format($regex);
Compiled regex for format matching.
Note that this attribute is EXPERIMENTAL and might change without warning!
=head2 C<pattern>
my $pattern = $pattern->pattern;
$pattern = $pattern->pattern('/(foo)/(bar)');
Raw unparsed pattern.
=head2 C<quote_end>
my $quote = $pattern->quote_end;
$pattern = $pattern->quote_end(']');
Character indicating the end of a quoted placeholder, defaults to C<)>.
=head2 C<quote_start>
my $quote = $pattern->quote_start;
$pattern = $pattern->quote_start('[');
Character indicating the start of a quoted placeholder, defaults to C<(>.
=head2 C<regex>
my $regex = $pattern->regex;
$pattern = $pattern->regex($regex);
Pattern in compiled regex form.
=head2 C<relaxed_start>
my $relaxed = $pattern->relaxed_start;
$pattern = $pattern->relaxed_start('*');
Character indicating a relaxed placeholder, defaults to C<.>.
=head2 C<reqs>
my $reqs = $pattern->reqs;
$pattern = $pattern->reqs({foo => qr/\w+/});
Regex constraints.
=head2 C<symbol_start>
my $symbol = $pattern->symbol_start;
$pattern = $pattern->symbol_start(':');
Character indicating a placeholder, defaults to C<:>.
=head2 C<symbols>
my $symbols = $pattern->symbols;
$pattern = $pattern->symbols(['foo', 'bar']);
Placeholder names.
=head2 C<tree>
my $tree = $pattern->tree;
$pattern = $pattern->tree([ ... ]);
Pattern in parsed form.
=head2 C<wildcard_start>
my $wildcard = $pattern->wildcard_start;
$pattern = $pattern->wildcard_start('*');
Character indicating the start of a wildcard placeholder, defaults to C<*>.
=head1 METHODS
L<Mojolicious::Routes::Pattern> inherits all methods from L<Mojo::Base> and
implements the following ones.
=head2 C<new>
my $pattern = Mojolicious::Routes::Pattern->new('/:controller/:action',
action => qr/\w+/
);
Construct a new pattern object.
=head2 C<match>
my $result = $pattern->match('/foo/bar');
Match pattern against a path.
=head2 C<parse>
$pattern = $pattern->parse('/:controller/:action', action => qr/\w+/);
Parse a raw pattern.
=head2 C<render>
my $path = $pattern->render({action => 'foo'});
Render pattern into a path with parameters.
=head2 C<shape_match>
my $result = $pattern->shape_match(\$path);
my $result = $pattern->shape_match(\$path, $detect);
Match pattern against a path and remove matching parts.
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicio.us>.
=cut
|