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Dumper	[ DIR ]	drwxr-xr-x
ConfigurableRequirementsInterf...	2.21 KB	-rw-r--r--
UrlGenerator.php	12.47 KB	-rw-r--r--
UrlGeneratorInterface.php	3.56 KB	-rw-r--r--

Code Editor : UrlGenerator.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Routing\Generator;

use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\RequestContext;
use Symfony\Component\Routing\Exception\InvalidParameterException;
use Symfony\Component\Routing\Exception\RouteNotFoundException;
use Symfony\Component\Routing\Exception\MissingMandatoryParametersException;
use Psr\Log\LoggerInterface;

/**
 * UrlGenerator can generate a URL or a path for any route in the RouteCollection
 * based on the passed parameters.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Tobias Schultze <http://tobion.de>
 *
 * @api
 */
class UrlGenerator implements UrlGeneratorInterface, ConfigurableRequirementsInterface
{
    /**
     * @var RouteCollection
     */
    protected $routes;

/**
     * @var RequestContext
     */
    protected $context;

/**
     * @var Boolean|null
     */
    protected $strictRequirements = true;

/**
     * @var LoggerInterface|null
     */
    protected $logger;

/**
     * This array defines the characters (besides alphanumeric ones) that will not be percent-encoded in the path segment of the generated URL.
     *
     * PHP's rawurlencode() encodes all chars except "a-zA-Z0-9-._~" according to RFC 3986. But we want to allow some chars
     * to be used in their literal form (reasons below). Other chars inside the path must of course be encoded, e.g.
     * "?" and "#" (would be interpreted wrongly as query and fragment identifier),
     * "'" and """ (are used as delimiters in HTML).
     */
    protected $decodedChars = array(
        // the slash can be used to designate a hierarchical structure and we want allow using it with this meaning
        // some webservers don't allow the slash in encoded form in the path for security reasons anyway
        // see http://stackoverflow.com/questions/4069002/http-400-if-2f-part-of-get-url-in-jboss
        '%2F' => '/',
        // the following chars are general delimiters in the URI specification but have only special meaning in the authority component
        // so they can safely be used in the path in unencoded form
        '%40' => '@',
        '%3A' => ':',
        // these chars are only sub-delimiters that have no predefined meaning and can therefore be used literally
        // so URI producing applications can use these chars to delimit subcomponents in a path segment without being encoded for better readability
        '%3B' => ';',
        '%2C' => ',',
        '%3D' => '=',
        '%2B' => '+',
        '%21' => '!',
        '%2A' => '*',
        '%7C' => '|',
    );

/**
     * Constructor.
     *
     * @param RouteCollection      $routes  A RouteCollection instance
     * @param RequestContext       $context The context
     * @param LoggerInterface|null $logger  A logger instance
     *
     * @api
     */
    public function __construct(RouteCollection $routes, RequestContext $context, LoggerInterface $logger = null)
    {
        $this->routes = $routes;
        $this->context = $context;
        $this->logger = $logger;
    }

/**
     * {@inheritdoc}
     */
    public function setContext(RequestContext $context)
    {
        $this->context = $context;
    }

/**
     * {@inheritdoc}
     */
    public function getContext()
    {
        return $this->context;
    }

/**
     * {@inheritdoc}
     */
    public function setStrictRequirements($enabled)
    {
        $this->strictRequirements = null === $enabled ? null : (Boolean) $enabled;
    }

/**
     * {@inheritdoc}
     */
    public function isStrictRequirements()
    {
        return $this->strictRequirements;
    }

/**
     * {@inheritDoc}
     */
    public function generate($name, $parameters = array(), $referenceType = self::ABSOLUTE_PATH)
    {
        if (null === $route = $this->routes->get($name)) {
            throw new RouteNotFoundException(sprintf('Unable to generate a URL for the named route "%s" as such route does not exist.', $name));
        }

// the Route has a cache of its own and is not recompiled as long as it does not get modified
        $compiledRoute = $route->compile();

return $this->doGenerate($compiledRoute->getVariables(), $route->getDefaults(), $route->getRequirements(), $compiledRoute->getTokens(), $parameters, $name, $referenceType, $compiledRoute->getHostTokens());
    }

/**
     * @throws MissingMandatoryParametersException When some parameters are missing that are mandatory for the route
     * @throws InvalidParameterException           When a parameter value for a placeholder is not correct because
     *                                             it does not match the requirement
     */
    protected function doGenerate($variables, $defaults, $requirements, $tokens, $parameters, $name, $referenceType, $hostTokens)
    {
        $variables = array_flip($variables);
        $mergedParams = array_replace($defaults, $this->context->getParameters(), $parameters);

// all params must be given
        if ($diff = array_diff_key($variables, $mergedParams)) {
            throw new MissingMandatoryParametersException(sprintf('Some mandatory parameters are missing ("%s") to generate a URL for route "%s".', implode('", "', array_keys($diff)), $name));
        }

$url = '';
        $optional = true;
        foreach ($tokens as $token) {
            if ('variable' === $token[0]) {
                if (!$optional || !array_key_exists($token[3], $defaults) || null !== $mergedParams[$token[3]] && (string) $mergedParams[$token[3]] !== (string) $defaults[$token[3]]) {
                    // check requirement
                    if (null !== $this->strictRequirements && !preg_match('#^'.$token[2].'$#', $mergedParams[$token[3]])) {
                        $message = sprintf('Parameter "%s" for route "%s" must match "%s" ("%s" given) to generate a corresponding URL.', $token[3], $name, $token[2], $mergedParams[$token[3]]);
                        if ($this->strictRequirements) {
                            throw new InvalidParameterException($message);
                        }

if ($this->logger) {
                            $this->logger->error($message);
                        }

return null;
                    }

$url = $token[1].$mergedParams[$token[3]].$url;
                    $optional = false;
                }
            } else {
                // static text
                $url = $token[1].$url;
                $optional = false;
            }
        }

if ('' === $url) {
            $url = '/';
        }

// the contexts base URL is already encoded (see Symfony\Component\HttpFoundation\Request)
        $url = strtr(rawurlencode($url), $this->decodedChars);

// the path segments "." and ".." are interpreted as relative reference when resolving a URI; see http://tools.ietf.org/html/rfc3986#section-3.3
        // so we need to encode them as they are not used for this purpose here
        // otherwise we would generate a URI that, when followed by a user agent (e.g. browser), does not match this route
        $url = strtr($url, array('/../' => '/%2E%2E/', '/./' => '/%2E/'));
        if ('/..' === substr($url, -3)) {
            $url = substr($url, 0, -2).'%2E%2E';
        } elseif ('/.' === substr($url, -2)) {
            $url = substr($url, 0, -1).'%2E';
        }

$schemeAuthority = '';
        if ($host = $this->context->getHost()) {
            $scheme = $this->context->getScheme();
            if (isset($requirements['_scheme']) && ($req = strtolower($requirements['_scheme'])) && $scheme !== $req) {
                $referenceType = self::ABSOLUTE_URL;
                $scheme = $req;
            }

if ($hostTokens) {
                $routeHost = '';
                foreach ($hostTokens as $token) {
                    if ('variable' === $token[0]) {
                        if (null !== $this->strictRequirements && !preg_match('#^'.$token[2].'$#', $mergedParams[$token[3]])) {
                            $message = sprintf('Parameter "%s" for route "%s" must match "%s" ("%s" given) to generate a corresponding URL.', $token[3], $name, $token[2], $mergedParams[$token[3]]);

if ($this->strictRequirements) {
                                throw new InvalidParameterException($message);
                            }

if ($this->logger) {
                                $this->logger->error($message);
                            }

return null;
                        }

$routeHost = $token[1].$mergedParams[$token[3]].$routeHost;
                    } else {
                        $routeHost = $token[1].$routeHost;
                    }
                }

if ($routeHost !== $host) {
                    $host = $routeHost;
                    if (self::ABSOLUTE_URL !== $referenceType) {
                        $referenceType = self::NETWORK_PATH;
                    }
                }
            }

if (self::ABSOLUTE_URL === $referenceType || self::NETWORK_PATH === $referenceType) {
                $port = '';
                if ('http' === $scheme && 80 != $this->context->getHttpPort()) {
                    $port = ':'.$this->context->getHttpPort();
                } elseif ('https' === $scheme && 443 != $this->context->getHttpsPort()) {
                    $port = ':'.$this->context->getHttpsPort();
                }

$schemeAuthority = self::NETWORK_PATH === $referenceType ? '//' : "$scheme://";
                $schemeAuthority .= $host.$port;
            }
        }

if (self::RELATIVE_PATH === $referenceType) {
            $url = self::getRelativePath($this->context->getPathInfo(), $url);
        } else {
            $url = $schemeAuthority.$this->context->getBaseUrl().$url;
        }

// add a query string if needed
        $extra = array_diff_key($parameters, $variables, $defaults);
        if ($extra && $query = http_build_query($extra, '', '&')) {
            $url .= '?'.$query;
        }

return $url;
    }

/**
     * Returns the target path as relative reference from the base path.
     *
     * Only the URIs path component (no schema, host etc.) is relevant and must be given, starting with a slash.
     * Both paths must be absolute and not contain relative parts.
     * Relative URLs from one resource to another are useful when generating self-contained downloadable document archives.
     * Furthermore, they can be used to reduce the link size in documents.
     *
     * Example target paths, given a base path of "/a/b/c/d":
     * - "/a/b/c/d"     -> ""
     * - "/a/b/c/"      -> "./"
     * - "/a/b/"        -> "../"
     * - "/a/b/c/other" -> "other"
     * - "/a/x/y"       -> "../../x/y"
     *
     * @param string $basePath   The base path
     * @param string $targetPath The target path
     *
     * @return string The relative target path
     */
    public static function getRelativePath($basePath, $targetPath)
    {
        if ($basePath === $targetPath) {
            return '';
        }

$sourceDirs = explode('/', isset($basePath[0]) && '/' === $basePath[0] ? substr($basePath, 1) : $basePath);
        $targetDirs = explode('/', isset($targetPath[0]) && '/' === $targetPath[0] ? substr($targetPath, 1) : $targetPath);
        array_pop($sourceDirs);
        $targetFile = array_pop($targetDirs);

foreach ($sourceDirs as $i => $dir) {
            if (isset($targetDirs[$i]) && $dir === $targetDirs[$i]) {
                unset($sourceDirs[$i], $targetDirs[$i]);
            } else {
                break;
            }
        }

$targetDirs[] = $targetFile;
        $path = str_repeat('../', count($sourceDirs)).implode('/', $targetDirs);

// A reference to the same base directory or an empty subdirectory must be prefixed with "./".
        // This also applies to a segment with a colon character (e.g., "file:colon") that cannot be used
        // as the first segment of a relative-path reference, as it would be mistaken for a scheme name
        // (see http://tools.ietf.org/html/rfc3986#section-4.2).
        return '' === $path || '/' === $path[0]
            || false !== ($colonPos = strpos($path, ':')) && ($colonPos < ($slashPos = strpos($path, '/')) || false === $slashPos)
            ? "./$path" : $path;
    }
}

${this.title}

Code Editor : UrlGenerator.php