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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette\Application\Routers;
  9: 
 10: use Nette;
 11: use Nette\Application;
 12: use Nette\Utils\Strings;
 13: 
 14: 
 15: /**
 16:  * The bidirectional route is responsible for mapping
 17:  * HTTP request to a Request object for dispatch and vice-versa.
 18:  */
 19: class Route implements Application\IRouter
 20: {
 21:     use Nette\SmartObject;
 22: 
 23:     const PRESENTER_KEY = 'presenter';
 24:     const MODULE_KEY = 'module';
 25: 
 26:     /** @internal url type */
 27:     const HOST = 1,
 28:         PATH = 2,
 29:         RELATIVE = 3;
 30: 
 31:     /** key used in {@link Route::$styles} or metadata {@link Route::__construct} */
 32:     const VALUE = 'value';
 33:     const PATTERN = 'pattern';
 34:     const FILTER_IN = 'filterIn';
 35:     const FILTER_OUT = 'filterOut';
 36:     const FILTER_TABLE = 'filterTable';
 37:     const FILTER_STRICT = 'filterStrict';
 38: 
 39:     /** @internal fixity types - how to handle default value? {@link Route::$metadata} */
 40:     const OPTIONAL = 0,
 41:         PATH_OPTIONAL = 1,
 42:         CONSTANT = 2;
 43: 
 44:     /** @deprecated */
 45:     public static $defaultFlags = 0;
 46: 
 47:     /** @var array */
 48:     public static $styles = [
 49:         '#' => [ // default style for path parameters
 50:             self::PATTERN => '[^/]+',
 51:             self::FILTER_OUT => [__CLASS__, 'param2path'],
 52:         ],
 53:         '?#' => [// default style for query parameters
 54:         ],
 55:         'module' => [
 56:             self::PATTERN => '[a-z][a-z0-9.-]*',
 57:             self::FILTER_IN => [__CLASS__, 'path2presenter'],
 58:             self::FILTER_OUT => [__CLASS__, 'presenter2path'],
 59:         ],
 60:         'presenter' => [
 61:             self::PATTERN => '[a-z][a-z0-9.-]*',
 62:             self::FILTER_IN => [__CLASS__, 'path2presenter'],
 63:             self::FILTER_OUT => [__CLASS__, 'presenter2path'],
 64:         ],
 65:         'action' => [
 66:             self::PATTERN => '[a-z][a-z0-9-]*',
 67:             self::FILTER_IN => [__CLASS__, 'path2action'],
 68:             self::FILTER_OUT => [__CLASS__, 'action2path'],
 69:         ],
 70:         '?module' => [
 71:         ],
 72:         '?presenter' => [
 73:         ],
 74:         '?action' => [
 75:         ],
 76:     ];
 77: 
 78:     /** @var string */
 79:     private $mask;
 80: 
 81:     /** @var array */
 82:     private $sequence;
 83: 
 84:     /** @var string  regular expression pattern */
 85:     private $re;
 86: 
 87:     /** @var string[]  parameter aliases in regular expression */
 88:     private $aliases;
 89: 
 90:     /** @var array of [value & fixity, filterIn, filterOut] */
 91:     private $metadata = [];
 92: 
 93:     /** @var array  */
 94:     private $xlat;
 95: 
 96:     /** @var int HOST, PATH, RELATIVE */
 97:     private $type;
 98: 
 99:     /** @var string  http | https */
100:     private $scheme;
101: 
102:     /** @var int */
103:     private $flags;
104: 
105:     /** @var Nette\Http\Url */
106:     private $lastRefUrl;
107: 
108:     /** @var string */
109:     private $lastBaseUrl;
110: 
111: 
112:     /**
113:      * @param  string  URL mask, e.g. '<presenter>/<action>/<id \d{1,3}>'
114:      * @param  array|string|\Closure  default values or metadata or callback for NetteModule\MicroPresenter
115:      * @param  int     flags
116:      */
117:     public function __construct($mask, $metadata = [], $flags = 0)
118:     {
119:         if (is_string($metadata)) {
120:             list($presenter, $action) = Nette\Application\Helpers::splitName($metadata);
121:             if (!$presenter) {
122:                 throw new Nette\InvalidArgumentException("Second argument must be array or string in format Presenter:action, '$metadata' given.");
123:             }
124:             $metadata = [self::PRESENTER_KEY => $presenter];
125:             if ($action !== '') {
126:                 $metadata['action'] = $action;
127:             }
128:         } elseif ($metadata instanceof \Closure || $metadata instanceof Nette\Callback) {
129:             if ($metadata instanceof Nette\Callback) {
130:                 trigger_error('Nette\Callback is deprecated, use Nette\Utils\Callback::closure().', E_USER_DEPRECATED);
131:             }
132:             $metadata = [
133:                 self::PRESENTER_KEY => 'Nette:Micro',
134:                 'callback' => $metadata,
135:             ];
136:         }
137: 
138:         $this->flags = $flags | static::$defaultFlags;
139:         $this->setMask($mask, $metadata);
140:         if (static::$defaultFlags) {
141:             trigger_error('Route::$defaultFlags is deprecated, router by default keeps the used protocol.', E_USER_DEPRECATED);
142:         } elseif ($flags & self::SECURED) {
143:             trigger_error('Router::SECURED is deprecated, specify scheme in mask.', E_USER_DEPRECATED);
144:             $this->scheme = 'https';
145:         }
146:     }
147: 
148: 
149:     /**
150:      * Maps HTTP request to a Request object.
151:      * @return Nette\Application\Request|null
152:      */
153:     public function match(Nette\Http\IRequest $httpRequest)
154:     {
155:         // combine with precedence: mask (params in URL-path), fixity, query, (post,) defaults
156: 
157:         // 1) URL MASK
158:         $url = $httpRequest->getUrl();
159:         $re = $this->re;
160: 
161:         if ($this->type === self::HOST) {
162:             $host = $url->getHost();
163:             $path = '//' . $host . $url->getPath();
164:             $parts = ip2long($host) ? [$host] : array_reverse(explode('.', $host));
165:             $re = strtr($re, [
166:                 '/%basePath%/' => preg_quote($url->getBasePath(), '#'),
167:                 '%tld%' => preg_quote($parts[0], '#'),
168:                 '%domain%' => preg_quote(isset($parts[1]) ? "$parts[1].$parts[0]" : $parts[0], '#'),
169:                 '%sld%' => preg_quote(isset($parts[1]) ? $parts[1] : '', '#'),
170:                 '%host%' => preg_quote($host, '#'),
171:             ]);
172: 
173:         } elseif ($this->type === self::RELATIVE) {
174:             $basePath = $url->getBasePath();
175:             if (strncmp($url->getPath(), $basePath, strlen($basePath)) !== 0) {
176:                 return null;
177:             }
178:             $path = (string) substr($url->getPath(), strlen($basePath));
179: 
180:         } else {
181:             $path = $url->getPath();
182:         }
183: 
184:         if ($path !== '') {
185:             $path = rtrim(rawurldecode($path), '/') . '/';
186:         }
187: 
188:         if (!$matches = Strings::match($path, $re)) {
189:             // stop, not matched
190:             return null;
191:         }
192: 
193:         // assigns matched values to parameters
194:         $params = [];
195:         foreach ($matches as $k => $v) {
196:             if (is_string($k) && $v !== '') {
197:                 $params[$this->aliases[$k]] = $v;
198:             }
199:         }
200: 
201: 
202:         // 2) CONSTANT FIXITY
203:         foreach ($this->metadata as $name => $meta) {
204:             if (!isset($params[$name]) && isset($meta['fixity']) && $meta['fixity'] !== self::OPTIONAL) {
205:                 $params[$name] = null; // cannot be overwriten in 3) and detected by isset() in 4)
206:             }
207:         }
208: 
209: 
210:         // 3) QUERY
211:         if ($this->xlat) {
212:             $params += self::renameKeys($httpRequest->getQuery(), array_flip($this->xlat));
213:         } else {
214:             $params += $httpRequest->getQuery();
215:         }
216: 
217: 
218:         // 4) APPLY FILTERS & FIXITY
219:         foreach ($this->metadata as $name => $meta) {
220:             if (isset($params[$name])) {
221:                 if (!is_scalar($params[$name])) {
222:                     // do nothing
223:                 } elseif (isset($meta[self::FILTER_TABLE][$params[$name]])) { // applies filterTable only to scalar parameters
224:                     $params[$name] = $meta[self::FILTER_TABLE][$params[$name]];
225: 
226:                 } elseif (isset($meta[self::FILTER_TABLE]) && !empty($meta[self::FILTER_STRICT])) {
227:                     return null; // rejected by filterTable
228: 
229:                 } elseif (isset($meta[self::FILTER_IN])) { // applies filterIn only to scalar parameters
230:                     $params[$name] = call_user_func($meta[self::FILTER_IN], (string) $params[$name]);
231:                     if ($params[$name] === null && !isset($meta['fixity'])) {
232:                         return null; // rejected by filter
233:                     }
234:                 }
235: 
236:             } elseif (isset($meta['fixity'])) {
237:                 $params[$name] = $meta[self::VALUE];
238:             }
239:         }
240: 
241:         if (isset($this->metadata[null][self::FILTER_IN])) {
242:             $params = call_user_func($this->metadata[null][self::FILTER_IN], $params);
243:             if ($params === null) {
244:                 return null;
245:             }
246:         }
247: 
248:         // 5) BUILD Request
249:         if (!isset($params[self::PRESENTER_KEY])) {
250:             throw new Nette\InvalidStateException('Missing presenter in route definition.');
251:         } elseif (!is_string($params[self::PRESENTER_KEY])) {
252:             return null;
253:         }
254:         $presenter = $params[self::PRESENTER_KEY];
255:         unset($params[self::PRESENTER_KEY]);
256: 
257:         if (isset($this->metadata[self::MODULE_KEY])) {
258:             $presenter = (isset($params[self::MODULE_KEY]) ? $params[self::MODULE_KEY] . ':' : '') . $presenter;
259:             unset($params[self::MODULE_KEY]);
260:         }
261: 
262:         return new Application\Request(
263:             $presenter,
264:             $httpRequest->getMethod(),
265:             $params,
266:             $httpRequest->getPost(),
267:             $httpRequest->getFiles(),
268:             [Application\Request::SECURED => $httpRequest->isSecured()]
269:         );
270:     }
271: 
272: 
273:     /**
274:      * Constructs absolute URL from Request object.
275:      * @return string|null
276:      */
277:     public function constructUrl(Application\Request $appRequest, Nette\Http\Url $refUrl)
278:     {
279:         if ($this->flags & self::ONE_WAY) {
280:             return null;
281:         }
282: 
283:         $params = $appRequest->getParameters();
284:         $metadata = $this->metadata;
285: 
286:         $presenter = $appRequest->getPresenterName();
287:         $params[self::PRESENTER_KEY] = $presenter;
288: 
289:         if (isset($metadata[self::MODULE_KEY])) { // try split into module and [submodule:]presenter parts
290:             $module = $metadata[self::MODULE_KEY];
291:             if (isset($module['fixity']) && strncmp($presenter, $module[self::VALUE] . ':', strlen($module[self::VALUE]) + 1) === 0) {
292:                 $a = strlen($module[self::VALUE]);
293:             } else {
294:                 $a = strrpos($presenter, ':');
295:             }
296:             if ($a === false) {
297:                 $params[self::MODULE_KEY] = isset($module[self::VALUE]) ? '' : null;
298:             } else {
299:                 $params[self::MODULE_KEY] = substr($presenter, 0, $a);
300:                 $params[self::PRESENTER_KEY] = substr($presenter, $a + 1);
301:             }
302:         }
303: 
304:         if (isset($metadata[null][self::FILTER_OUT])) {
305:             $params = call_user_func($metadata[null][self::FILTER_OUT], $params);
306:             if ($params === null) {
307:                 return null;
308:             }
309:         }
310: 
311:         foreach ($metadata as $name => $meta) {
312:             if (!isset($params[$name])) {
313:                 continue; // retains null values
314:             }
315: 
316:             if (is_scalar($params[$name])) {
317:                 $params[$name] = $params[$name] === false ? '0' : (string) $params[$name];
318:             }
319: 
320:             if (isset($meta['fixity'])) {
321:                 if ($params[$name] === $meta[self::VALUE]) { // remove default values; null values are retain
322:                     unset($params[$name]);
323:                     continue;
324: 
325:                 } elseif ($meta['fixity'] === self::CONSTANT) {
326:                     return null; // missing or wrong parameter '$name'
327:                 }
328:             }
329: 
330:             if (is_scalar($params[$name]) && isset($meta['filterTable2'][$params[$name]])) {
331:                 $params[$name] = $meta['filterTable2'][$params[$name]];
332: 
333:             } elseif (isset($meta['filterTable2']) && !empty($meta[self::FILTER_STRICT])) {
334:                 return null;
335: 
336:             } elseif (isset($meta[self::FILTER_OUT])) {
337:                 $params[$name] = call_user_func($meta[self::FILTER_OUT], $params[$name]);
338:             }
339: 
340:             if (isset($meta[self::PATTERN]) && !preg_match($meta[self::PATTERN], rawurldecode($params[$name]))) {
341:                 return null; // pattern not match
342:             }
343:         }
344: 
345:         // compositing path
346:         $sequence = $this->sequence;
347:         $brackets = [];
348:         $required = null; // null for auto-optional
349:         $url = '';
350:         $i = count($sequence) - 1;
351:         do {
352:             $url = $sequence[$i] . $url;
353:             if ($i === 0) {
354:                 break;
355:             }
356:             $i--;
357: 
358:             $name = $sequence[$i--]; // parameter name
359: 
360:             if ($name === ']') { // opening optional part
361:                 $brackets[] = $url;
362: 
363:             } elseif ($name[0] === '[') { // closing optional part
364:                 $tmp = array_pop($brackets);
365:                 if ($required < count($brackets) + 1) { // is this level optional?
366:                     if ($name !== '[!') { // and not "required"-optional
367:                         $url = $tmp;
368:                     }
369:                 } else {
370:                     $required = count($brackets);
371:                 }
372: 
373:             } elseif ($name[0] === '?') { // "foo" parameter
374:                 continue;
375: 
376:             } elseif (isset($params[$name]) && $params[$name] != '') { // intentionally ==
377:                 $required = count($brackets); // make this level required
378:                 $url = $params[$name] . $url;
379:                 unset($params[$name]);
380: 
381:             } elseif (isset($metadata[$name]['fixity'])) { // has default value?
382:                 if ($required === null && !$brackets) { // auto-optional
383:                     $url = '';
384:                 } else {
385:                     $url = $metadata[$name]['defOut'] . $url;
386:                 }
387: 
388:             } else {
389:                 return null; // missing parameter '$name'
390:             }
391:         } while (true);
392: 
393:         $scheme = $this->scheme ?: $refUrl->getScheme();
394: 
395:         if ($this->type === self::HOST) {
396:             $host = $refUrl->getHost();
397:             $parts = ip2long($host) ? [$host] : array_reverse(explode('.', $host));
398:             $url = strtr($url, [
399:                 '/%basePath%/' => $refUrl->getBasePath(),
400:                 '%tld%' => $parts[0],
401:                 '%domain%' => isset($parts[1]) ? "$parts[1].$parts[0]" : $parts[0],
402:                 '%sld%' => isset($parts[1]) ? $parts[1] : '',
403:                 '%host%' => $host,
404:             ]);
405:             $url = $scheme . ':' . $url;
406:         } else {
407:             if ($this->lastRefUrl !== $refUrl) {
408:                 $basePath = ($this->type === self::RELATIVE ? $refUrl->getBasePath() : '');
409:                 $this->lastBaseUrl = $scheme . '://' . $refUrl->getAuthority() . $basePath;
410:                 $this->lastRefUrl = $refUrl;
411:             }
412:             $url = $this->lastBaseUrl . $url;
413:         }
414: 
415:         if (strpos($url, '//', strlen($scheme) + 3) !== false) {
416:             return null;
417:         }
418: 
419:         // build query string
420:         if ($this->xlat) {
421:             $params = self::renameKeys($params, $this->xlat);
422:         }
423: 
424:         $sep = ini_get('arg_separator.input');
425:         $query = http_build_query($params, '', $sep ? $sep[0] : '&');
426:         if ($query != '') { // intentionally ==
427:             $url .= '?' . $query;
428:         }
429: 
430:         return $url;
431:     }
432: 
433: 
434:     /**
435:      * Parse mask and array of default values; initializes object.
436:      * @param  string
437:      * @param  array
438:      * @return void
439:      */
440:     private function setMask($mask, array $metadata)
441:     {
442:         $this->mask = $mask;
443: 
444:         // detect '//host/path' vs. '/abs. path' vs. 'relative path'
445:         if (preg_match('#(?:(https?):)?(//.*)#A', $mask, $m)) {
446:             $this->type = self::HOST;
447:             list(, $this->scheme, $mask) = $m;
448: 
449:         } elseif (substr($mask, 0, 1) === '/') {
450:             $this->type = self::PATH;
451: 
452:         } else {
453:             $this->type = self::RELATIVE;
454:         }
455: 
456:         foreach ($metadata as $name => $meta) {
457:             if (!is_array($meta)) {
458:                 $metadata[$name] = $meta = [self::VALUE => $meta];
459:             }
460: 
461:             if (array_key_exists(self::VALUE, $meta)) {
462:                 if (is_scalar($meta[self::VALUE])) {
463:                     $metadata[$name][self::VALUE] = $meta[self::VALUE] === false ? '0' : (string) $meta[self::VALUE];
464:                 }
465:                 $metadata[$name]['fixity'] = self::CONSTANT;
466:             }
467:         }
468: 
469:         if (strpbrk($mask, '?<>[]') === false) {
470:             $this->re = '#' . preg_quote($mask, '#') . '/?\z#A';
471:             $this->sequence = [$mask];
472:             $this->metadata = $metadata;
473:             return;
474:         }
475: 
476:         // PARSE MASK
477:         // <parameter-name[=default] [pattern]> or [ or ] or ?...
478:         $parts = Strings::split($mask, '/<([^<>= ]+)(=[^<> ]*)? *([^<>]*)>|(\[!?|\]|\s*\?.*)/');
479: 
480:         $this->xlat = [];
481:         $i = count($parts) - 1;
482: 
483:         // PARSE QUERY PART OF MASK
484:         if (isset($parts[$i - 1]) && substr(ltrim($parts[$i - 1]), 0, 1) === '?') {
485:             // name=<parameter-name [pattern]>
486:             $matches = Strings::matchAll($parts[$i - 1], '/(?:([a-zA-Z0-9_.-]+)=)?<([^> ]+) *([^>]*)>/');
487: 
488:             foreach ($matches as list(, $param, $name, $pattern)) { // $pattern is not used
489:                 if (isset(static::$styles['?' . $name])) {
490:                     $meta = static::$styles['?' . $name];
491:                 } else {
492:                     $meta = static::$styles['?#'];
493:                 }
494: 
495:                 if (isset($metadata[$name])) {
496:                     $meta = $metadata[$name] + $meta;
497:                 }
498: 
499:                 if (array_key_exists(self::VALUE, $meta)) {
500:                     $meta['fixity'] = self::OPTIONAL;
501:                 }
502: 
503:                 unset($meta['pattern']);
504:                 $meta['filterTable2'] = empty($meta[self::FILTER_TABLE]) ? null : array_flip($meta[self::FILTER_TABLE]);
505: 
506:                 $metadata[$name] = $meta;
507:                 if ($param !== '') {
508:                     $this->xlat[$name] = $param;
509:                 }
510:             }
511:             $i -= 5;
512:         }
513: 
514:         // PARSE PATH PART OF MASK
515:         $brackets = 0; // optional level
516:         $re = '';
517:         $sequence = [];
518:         $autoOptional = true;
519:         $aliases = [];
520:         do {
521:             $part = $parts[$i]; // part of path
522:             if (strpbrk($part, '<>') !== false) {
523:                 throw new Nette\InvalidArgumentException("Unexpected '$part' in mask '$mask'.");
524:             }
525:             array_unshift($sequence, $part);
526:             $re = preg_quote($part, '#') . $re;
527:             if ($i === 0) {
528:                 break;
529:             }
530:             $i--;
531: 
532:             $part = $parts[$i]; // [ or ]
533:             if ($part === '[' || $part === ']' || $part === '[!') {
534:                 $brackets += $part[0] === '[' ? -1 : 1;
535:                 if ($brackets < 0) {
536:                     throw new Nette\InvalidArgumentException("Unexpected '$part' in mask '$mask'.");
537:                 }
538:                 array_unshift($sequence, $part);
539:                 $re = ($part[0] === '[' ? '(?:' : ')?') . $re;
540:                 $i -= 4;
541:                 continue;
542:             }
543: 
544:             $pattern = trim($parts[$i--]); // validation condition (as regexp)
545:             $default = $parts[$i--]; // default value
546:             $name = $parts[$i--]; // parameter name
547:             array_unshift($sequence, $name);
548: 
549:             if ($name[0] === '?') { // "foo" parameter
550:                 $name = substr($name, 1);
551:                 $re = $pattern ? '(?:' . preg_quote($name, '#') . "|$pattern)$re" : preg_quote($name, '#') . $re;
552:                 $sequence[1] = $name . $sequence[1];
553:                 continue;
554:             }
555: 
556:             // pattern, condition & metadata
557:             if (isset(static::$styles[$name])) {
558:                 $meta = static::$styles[$name];
559:             } else {
560:                 $meta = static::$styles['#'];
561:             }
562: 
563:             if (isset($metadata[$name])) {
564:                 $meta = $metadata[$name] + $meta;
565:             }
566: 
567:             if ($pattern == '' && isset($meta[self::PATTERN])) {
568:                 $pattern = $meta[self::PATTERN];
569:             }
570: 
571:             if ($default !== '') {
572:                 $meta[self::VALUE] = (string) substr($default, 1);
573:                 $meta['fixity'] = self::PATH_OPTIONAL;
574:             }
575: 
576:             $meta['filterTable2'] = empty($meta[self::FILTER_TABLE]) ? null : array_flip($meta[self::FILTER_TABLE]);
577:             if (array_key_exists(self::VALUE, $meta)) {
578:                 if (isset($meta['filterTable2'][$meta[self::VALUE]])) {
579:                     $meta['defOut'] = $meta['filterTable2'][$meta[self::VALUE]];
580: 
581:                 } elseif (isset($meta[self::FILTER_OUT])) {
582:                     $meta['defOut'] = call_user_func($meta[self::FILTER_OUT], $meta[self::VALUE]);
583: 
584:                 } else {
585:                     $meta['defOut'] = $meta[self::VALUE];
586:                 }
587:             }
588:             $meta[self::PATTERN] = "#(?:$pattern)\\z#A";
589: 
590:             // include in expression
591:             $aliases['p' . $i] = $name;
592:             $re = '(?P<p' . $i . '>(?U)' . $pattern . ')' . $re;
593:             if ($brackets) { // is in brackets?
594:                 if (!isset($meta[self::VALUE])) {
595:                     $meta[self::VALUE] = $meta['defOut'] = null;
596:                 }
597:                 $meta['fixity'] = self::PATH_OPTIONAL;
598: 
599:             } elseif (isset($meta['fixity'])) {
600:                 if ($autoOptional) {
601:                     $re = '(?:' . $re . ')?';
602:                 }
603:                 $meta['fixity'] = self::PATH_OPTIONAL;
604: 
605:             } else {
606:                 $autoOptional = false;
607:             }
608: 
609:             $metadata[$name] = $meta;
610:         } while (true);
611: 
612:         if ($brackets) {
613:             throw new Nette\InvalidArgumentException("Missing '[' in mask '$mask'.");
614:         }
615: 
616:         $this->aliases = $aliases;
617:         $this->re = '#' . $re . '/?\z#A';
618:         $this->metadata = $metadata;
619:         $this->sequence = $sequence;
620:     }
621: 
622: 
623:     /**
624:      * Returns mask.
625:      * @return string
626:      */
627:     public function getMask()
628:     {
629:         return $this->mask;
630:     }
631: 
632: 
633:     /**
634:      * Returns default values.
635:      * @return array
636:      */
637:     public function getDefaults()
638:     {
639:         $defaults = [];
640:         foreach ($this->metadata as $name => $meta) {
641:             if (isset($meta['fixity'])) {
642:                 $defaults[$name] = $meta[self::VALUE];
643:             }
644:         }
645:         return $defaults;
646:     }
647: 
648: 
649:     /**
650:      * Returns flags.
651:      * @return int
652:      */
653:     public function getFlags()
654:     {
655:         return $this->flags;
656:     }
657: 
658: 
659:     /********************* Utilities ****************d*g**/
660: 
661: 
662:     /**
663:      * Proprietary cache aim.
664:      * @internal
665:      * @return string[]|null
666:      */
667:     public function getTargetPresenters()
668:     {
669:         if ($this->flags & self::ONE_WAY) {
670:             return [];
671:         }
672: 
673:         $m = $this->metadata;
674:         $module = '';
675: 
676:         if (isset($m[self::MODULE_KEY])) {
677:             if (isset($m[self::MODULE_KEY]['fixity']) && $m[self::MODULE_KEY]['fixity'] === self::CONSTANT) {
678:                 $module = $m[self::MODULE_KEY][self::VALUE] . ':';
679:             } else {
680:                 return null;
681:             }
682:         }
683: 
684:         if (isset($m[self::PRESENTER_KEY]['fixity']) && $m[self::PRESENTER_KEY]['fixity'] === self::CONSTANT) {
685:             return [$module . $m[self::PRESENTER_KEY][self::VALUE]];
686:         }
687:         return null;
688:     }
689: 
690: 
691:     /**
692:      * Rename keys in array.
693:      * @param  array
694:      * @param  array
695:      * @return array
696:      */
697:     private static function renameKeys($arr, $xlat)
698:     {
699:         if (empty($xlat)) {
700:             return $arr;
701:         }
702: 
703:         $res = [];
704:         $occupied = array_flip($xlat);
705:         foreach ($arr as $k => $v) {
706:             if (isset($xlat[$k])) {
707:                 $res[$xlat[$k]] = $v;
708: 
709:             } elseif (!isset($occupied[$k])) {
710:                 $res[$k] = $v;
711:             }
712:         }
713:         return $res;
714:     }
715: 
716: 
717:     /********************* Inflectors ****************d*g**/
718: 
719: 
720:     /**
721:      * camelCaseAction name -> dash-separated.
722:      * @param  string
723:      * @return string
724:      */
725:     private static function action2path($s)
726:     {
727:         $s = preg_replace('#(.)(?=[A-Z])#', '$1-', $s);
728:         $s = strtolower($s);
729:         $s = rawurlencode($s);
730:         return $s;
731:     }
732: 
733: 
734:     /**
735:      * dash-separated -> camelCaseAction name.
736:      * @param  string
737:      * @return string
738:      */
739:     private static function path2action($s)
740:     {
741:         $s = preg_replace('#-(?=[a-z])#', ' ', $s);
742:         $s = lcfirst(ucwords($s));
743:         $s = str_replace(' ', '', $s);
744:         return $s;
745:     }
746: 
747: 
748:     /**
749:      * PascalCase:Presenter name -> dash-and-dot-separated.
750:      * @param  string
751:      * @return string
752:      */
753:     private static function presenter2path($s)
754:     {
755:         $s = strtr($s, ':', '.');
756:         $s = preg_replace('#([^.])(?=[A-Z])#', '$1-', $s);
757:         $s = strtolower($s);
758:         $s = rawurlencode($s);
759:         return $s;
760:     }
761: 
762: 
763:     /**
764:      * dash-and-dot-separated -> PascalCase:Presenter name.
765:      * @param  string
766:      * @return string
767:      */
768:     private static function path2presenter($s)
769:     {
770:         $s = preg_replace('#([.-])(?=[a-z])#', '$1 ', $s);
771:         $s = ucwords($s);
772:         $s = str_replace('. ', ':', $s);
773:         $s = str_replace('- ', '', $s);
774:         return $s;
775:     }
776: 
777: 
778:     /**
779:      * Url encode.
780:      * @param  string
781:      * @return string
782:      */
783:     private static function param2path($s)
784:     {
785:         return str_replace('%2F', '/', rawurlencode($s));
786:     }
787: }
788: 
Nette 2.4-20170829 API API documentation generated by ApiGen 2.8.0