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Edit File : HeaderBag.php \| Size : 8.20 KB
<?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\HttpFoundation; /* * HeaderBag is a container for HTTP headers. * * @author Fabien Potencier <fabien@symfony.com> / class HeaderBag implements \IteratorAggregate, \Countable { protected const UPPER = '_ABCDEFGHIJKLMNOPQRSTUVWXYZ'; protected const LOWER = '-abcdefghijklmnopqrstuvwxyz'; protected $headers = []; protected $cacheControl = []; public function __construct(array $headers = []) { foreach ($headers as $key => $values) { $this->set($key, $values); } } /* * Returns the headers as a string. * * @return string The headers / public function __toString() { if (!$headers = $this->all()) { return ''; } ksort($headers); $max = max(array_map('strlen', array_keys($headers))) + 1; $content = ''; foreach ($headers as $name => $values) { $name = ucwords($name, '-'); foreach ($values as $value) { $content .= sprintf("%-{$max}s %s\r\n", $name.':', $value); } } return $content; } /* * Returns the headers. * * @param string\|null $key The name of the headers to return or null to get them all * * @return array An array of headers / public function all(/string $key = null/) { if (1 <= \func_num_args() && null !== $key = func_get_arg(0)) { return $this->headers[strtr($key, self::UPPER, self::LOWER)] ?? []; } return $this->headers; } /* * Returns the parameter keys. * * @return array An array of parameter keys / public function keys() { return array_keys($this->all()); } /* * Replaces the current HTTP headers by a new set. / public function replace(array $headers = []) { $this->headers = []; $this->add($headers); } /* * Adds new headers the current HTTP headers set. / public function add(array $headers) { foreach ($headers as $key => $values) { $this->set($key, $values); } } /* * Returns a header value by name. * * @param string $key The header name * @param string\|null $default The default value * * @return string\|null The first header value or default value / public function get($key, $default = null) { $headers = $this->all((string) $key); if (2 < \func_num_args()) { @trigger_error(sprintf('Passing a third argument to "%s()" is deprecated since Symfony 4.4, use method "all()" instead', __METHOD__), E_USER_DEPRECATED); if (!func_get_arg(2)) { return $headers; } } if (!$headers) { return $default; } if (null === $headers[0]) { return null; } return (string) $headers[0]; } /* * Sets a header by name. * * @param string $key The key * @param string\|string[] $values The value or an array of values * @param bool $replace Whether to replace the actual value or not (true by default) / public function set($key, $values, $replace = true) { $key = strtr($key, self::UPPER, self::LOWER); if (\is_array($values)) { $values = array_values($values); if (true === $replace \|\| !isset($this->headers[$key])) { $this->headers[$key] = $values; } else { $this->headers[$key] = array_merge($this->headers[$key], $values); } } else { if (true === $replace \|\| !isset($this->headers[$key])) { $this->headers[$key] = [$values]; } else { $this->headers[$key][] = $values; } } if ('cache-control' === $key) { $this->cacheControl = $this->parseCacheControl(implode(', ', $this->headers[$key])); } } /* * Returns true if the HTTP header is defined. * * @param string $key The HTTP header * * @return bool true if the parameter exists, false otherwise / public function has($key) { return \array_key_exists(strtr($key, self::UPPER, self::LOWER), $this->all()); } /* * Returns true if the given HTTP header contains the given value. * * @param string $key The HTTP header name * @param string $value The HTTP value * * @return bool true if the value is contained in the header, false otherwise / public function contains($key, $value) { return \in_array($value, $this->all((string) $key)); } /* * Removes a header. * * @param string $key The HTTP header name / public function remove($key) { $key = strtr($key, self::UPPER, self::LOWER); unset($this->headers[$key]); if ('cache-control' === $key) { $this->cacheControl = []; } } /* * Returns the HTTP header value converted to a date. * * @param string $key The parameter key * * @return \DateTimeInterface\|null The parsed DateTime or the default value if the header does not exist * * @throws \RuntimeException When the HTTP header is not parseable / public function getDate($key, \DateTime $default = null) { if (null === $value = $this->get($key)) { return $default; } if (false === $date = \DateTime::createFromFormat(DATE_RFC2822, $value)) { throw new \RuntimeException(sprintf('The "%s" HTTP header is not parseable (%s).', $key, $value)); } return $date; } /* * Adds a custom Cache-Control directive. * * @param string $key The Cache-Control directive name * @param mixed $value The Cache-Control directive value / public function addCacheControlDirective($key, $value = true) { $this->cacheControl[$key] = $value; $this->set('Cache-Control', $this->getCacheControlHeader()); } /* * Returns true if the Cache-Control directive is defined. * * @param string $key The Cache-Control directive * * @return bool true if the directive exists, false otherwise / public function hasCacheControlDirective($key) { return \array_key_exists($key, $this->cacheControl); } /* * Returns a Cache-Control directive value by name. * * @param string $key The directive name * * @return mixed\|null The directive value if defined, null otherwise / public function getCacheControlDirective($key) { return \array_key_exists($key, $this->cacheControl) ? $this->cacheControl[$key] : null; } /* * Removes a Cache-Control directive. * * @param string $key The Cache-Control directive / public function removeCacheControlDirective($key) { unset($this->cacheControl[$key]); $this->set('Cache-Control', $this->getCacheControlHeader()); } /* * Returns an iterator for headers. * * @return \ArrayIterator An \ArrayIterator instance / public function getIterator() { return new \ArrayIterator($this->headers); } /* * Returns the number of headers. * * @return int The number of headers / public function count() { return \count($this->headers); } protected function getCacheControlHeader() { ksort($this->cacheControl); return HeaderUtils::toString($this->cacheControl, ','); } /* * Parses a Cache-Control HTTP header. * * @param string $header The value of the Cache-Control HTTP header * * @return array An array representing the attribute values */ protected function parseCacheControl($header) { $parts = HeaderUtils::split($header, ',='); return HeaderUtils::combine($parts); } } Back

Edit File : HeaderBag.php | Size : 8.20 KB

<?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\HttpFoundation;

/**
 * HeaderBag is a container for HTTP headers.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class HeaderBag implements \IteratorAggregate, \Countable
{
    protected const UPPER = '_ABCDEFGHIJKLMNOPQRSTUVWXYZ';
    protected const LOWER = '-abcdefghijklmnopqrstuvwxyz';

protected $headers = [];
    protected $cacheControl = [];

public function __construct(array $headers = [])
    {
        foreach ($headers as $key => $values) {
            $this->set($key, $values);
        }
    }

/**
     * Returns the headers as a string.
     *
     * @return string The headers
     */
    public function __toString()
    {
        if (!$headers = $this->all()) {
            return '';
        }

ksort($headers);
        $max = max(array_map('strlen', array_keys($headers))) + 1;
        $content = '';
        foreach ($headers as $name => $values) {
            $name = ucwords($name, '-');
            foreach ($values as $value) {
                $content .= sprintf("%-{$max}s %s\r\n", $name.':', $value);
            }
        }

return $content;
    }

/**
     * Returns the headers.
     *
     * @param string|null $key The name of the headers to return or null to get them all
     *
     * @return array An array of headers
     */
    public function all(/*string $key = null*/)
    {
        if (1 <= \func_num_args() && null !== $key = func_get_arg(0)) {
            return $this->headers[strtr($key, self::UPPER, self::LOWER)] ?? [];
        }

return $this->headers;
    }

/**
     * Returns the parameter keys.
     *
     * @return array An array of parameter keys
     */
    public function keys()
    {
        return array_keys($this->all());
    }

/**
     * Replaces the current HTTP headers by a new set.
     */
    public function replace(array $headers = [])
    {
        $this->headers = [];
        $this->add($headers);
    }

/**
     * Adds new headers the current HTTP headers set.
     */
    public function add(array $headers)
    {
        foreach ($headers as $key => $values) {
            $this->set($key, $values);
        }
    }

/**
     * Returns a header value by name.
     *
     * @param string      $key     The header name
     * @param string|null $default The default value
     *
     * @return string|null The first header value or default value
     */
    public function get($key, $default = null)
    {
        $headers = $this->all((string) $key);
        if (2 < \func_num_args()) {
            @trigger_error(sprintf('Passing a third argument to "%s()" is deprecated since Symfony 4.4, use method "all()" instead', __METHOD__), E_USER_DEPRECATED);

if (!func_get_arg(2)) {
                return $headers;
            }
        }

if (!$headers) {
            return $default;
        }

if (null === $headers[0]) {
            return null;
        }

return (string) $headers[0];
    }

/**
     * Sets a header by name.
     *
     * @param string          $key     The key
     * @param string|string[] $values  The value or an array of values
     * @param bool            $replace Whether to replace the actual value or not (true by default)
     */
    public function set($key, $values, $replace = true)
    {
        $key = strtr($key, self::UPPER, self::LOWER);

if (\is_array($values)) {
            $values = array_values($values);

if (true === $replace || !isset($this->headers[$key])) {
                $this->headers[$key] = $values;
            } else {
                $this->headers[$key] = array_merge($this->headers[$key], $values);
            }
        } else {
            if (true === $replace || !isset($this->headers[$key])) {
                $this->headers[$key] = [$values];
            } else {
                $this->headers[$key][] = $values;
            }
        }

if ('cache-control' === $key) {
            $this->cacheControl = $this->parseCacheControl(implode(', ', $this->headers[$key]));
        }
    }

/**
     * Returns true if the HTTP header is defined.
     *
     * @param string $key The HTTP header
     *
     * @return bool true if the parameter exists, false otherwise
     */
    public function has($key)
    {
        return \array_key_exists(strtr($key, self::UPPER, self::LOWER), $this->all());
    }

/**
     * Returns true if the given HTTP header contains the given value.
     *
     * @param string $key   The HTTP header name
     * @param string $value The HTTP value
     *
     * @return bool true if the value is contained in the header, false otherwise
     */
    public function contains($key, $value)
    {
        return \in_array($value, $this->all((string) $key));
    }

/**
     * Removes a header.
     *
     * @param string $key The HTTP header name
     */
    public function remove($key)
    {
        $key = strtr($key, self::UPPER, self::LOWER);

unset($this->headers[$key]);

if ('cache-control' === $key) {
            $this->cacheControl = [];
        }
    }

/**
     * Returns the HTTP header value converted to a date.
     *
     * @param string $key The parameter key
     *
     * @return \DateTimeInterface|null The parsed DateTime or the default value if the header does not exist
     *
     * @throws \RuntimeException When the HTTP header is not parseable
     */
    public function getDate($key, \DateTime $default = null)
    {
        if (null === $value = $this->get($key)) {
            return $default;
        }

if (false === $date = \DateTime::createFromFormat(DATE_RFC2822, $value)) {
            throw new \RuntimeException(sprintf('The "%s" HTTP header is not parseable (%s).', $key, $value));
        }

return $date;
    }

/**
     * Adds a custom Cache-Control directive.
     *
     * @param string $key   The Cache-Control directive name
     * @param mixed  $value The Cache-Control directive value
     */
    public function addCacheControlDirective($key, $value = true)
    {
        $this->cacheControl[$key] = $value;

$this->set('Cache-Control', $this->getCacheControlHeader());
    }

/**
     * Returns true if the Cache-Control directive is defined.
     *
     * @param string $key The Cache-Control directive
     *
     * @return bool true if the directive exists, false otherwise
     */
    public function hasCacheControlDirective($key)
    {
        return \array_key_exists($key, $this->cacheControl);
    }

/**
     * Returns a Cache-Control directive value by name.
     *
     * @param string $key The directive name
     *
     * @return mixed|null The directive value if defined, null otherwise
     */
    public function getCacheControlDirective($key)
    {
        return \array_key_exists($key, $this->cacheControl) ? $this->cacheControl[$key] : null;
    }

/**
     * Removes a Cache-Control directive.
     *
     * @param string $key The Cache-Control directive
     */
    public function removeCacheControlDirective($key)
    {
        unset($this->cacheControl[$key]);

$this->set('Cache-Control', $this->getCacheControlHeader());
    }

/**
     * Returns an iterator for headers.
     *
     * @return \ArrayIterator An \ArrayIterator instance
     */
    public function getIterator()
    {
        return new \ArrayIterator($this->headers);
    }

/**
     * Returns the number of headers.
     *
     * @return int The number of headers
     */
    public function count()
    {
        return \count($this->headers);
    }

protected function getCacheControlHeader()
    {
        ksort($this->cacheControl);

return HeaderUtils::toString($this->cacheControl, ',');
    }

/**
     * Parses a Cache-Control HTTP header.
     *
     * @param string $header The value of the Cache-Control HTTP header
     *
     * @return array An array representing the attribute values
     */
    protected function parseCacheControl($header)
    {
        $parts = HeaderUtils::split($header, ',=');

return HeaderUtils::combine($parts);
    }
}

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