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Edit File : ParameterizedHeader.php \| Size : 5.32 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\Mime\Header; use Symfony\Component\Mime\Encoder\Rfc2231Encoder; /* * @author Chris Corbyn / final class ParameterizedHeader extends UnstructuredHeader { /* * RFC 2231's definition of a token. * * @var string / public const TOKEN_REGEX = '(?:[\x21\x23-\x27\x2A\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7E]+)'; private $encoder; private $parameters = []; public function __construct(string $name, string $value, array $parameters = []) { parent::__construct($name, $value); foreach ($parameters as $k => $v) { $this->setParameter($k, $v); } if ('content-type' !== strtolower($name)) { $this->encoder = new Rfc2231Encoder(); } } public function setParameter(string $parameter, ?string $value) { $this->setParameters(array_merge($this->getParameters(), [$parameter => $value])); } public function getParameter(string $parameter): string { return $this->getParameters()[$parameter] ?? ''; } /* * @param string[] $parameters / public function setParameters(array $parameters) { $this->parameters = $parameters; } /* * @return string[] / public function getParameters(): array { return $this->parameters; } public function getBodyAsString(): string { $body = parent::getBodyAsString(); foreach ($this->parameters as $name => $value) { if (null !== $value) { $body .= '; '.$this->createParameter($name, $value); } } return $body; } /* * Generate a list of all tokens in the final header. * * This doesn't need to be overridden in theory, but it is for implementation * reasons to prevent potential breakage of attributes. / protected function toTokens(string $string = null): array { $tokens = parent::toTokens(parent::getBodyAsString()); // Try creating any parameters foreach ($this->parameters as $name => $value) { if (null !== $value) { // Add the semi-colon separator $tokens[\count($tokens) - 1] .= ';'; $tokens = array_merge($tokens, $this->generateTokenLines(' '.$this->createParameter($name, $value))); } } return $tokens; } /* * Render an RFC 2047 compliant header parameter from the $name and $value. / private function createParameter(string $name, string $value): string { $origValue = $value; $encoded = false; // Allow room for parameter name, indices, "=" and DQUOTEs $maxValueLength = $this->getMaxLineLength() - \strlen($name.'=N"";') - 1; $firstLineOffset = 0; // If it's not already a valid parameter value... if (!preg_match('/^'.self::TOKEN_REGEX.'$/D', $value)) { // TODO: text, or something else?? // ... and it's not ascii if (!preg_match('/^[\x00-\x08\x0B\x0C\x0E-\x7F]$/D', $value)) { $encoded = true; // Allow space for the indices, charset and language $maxValueLength = $this->getMaxLineLength() - \strlen($name.'N="";') - 1; $firstLineOffset = \strlen($this->getCharset()."'".$this->getLanguage()."'"); } } // Encode if we need to if ($encoded \|\| \strlen($value) > $maxValueLength) { if (null !== $this->encoder) { $value = $this->encoder->encodeString($origValue, $this->getCharset(), $firstLineOffset, $maxValueLength); } else { // We have to go against RFC 2183/2231 in some areas for interoperability $value = $this->getTokenAsEncodedWord($origValue); $encoded = false; } } $valueLines = $this->encoder ? explode("\r\n", $value) : [$value]; // Need to add indices if (\count($valueLines) > 1) { $paramLines = []; foreach ($valueLines as $i => $line) { $paramLines[] = $name.''.$i.$this->getEndOfParameterValue($line, true, 0 === $i); } return implode(";\r\n ", $paramLines); } else { return $name.$this->getEndOfParameterValue($valueLines[0], $encoded, true); } } /** * Returns the parameter value from the "=" and beyond. * * @param string $value to append / private function getEndOfParameterValue(string $value, bool $encoded = false, bool $firstLine = false): string { $forceHttpQuoting = 'content-disposition' === strtolower($this->getName()) && 'form-data' === $this->getValue(); if ($forceHttpQuoting \|\| !preg_match('/^'.self::TOKEN_REGEX.'$/D', $value)) { $value = '"'.$value.'"'; } $prepend = '='; if ($encoded) { $prepend = '='; if ($firstLine) { $prepend = '*='.$this->getCharset()."'".$this->getLanguage()."'"; } } return $prepend.$value; } } Back

Edit File : ParameterizedHeader.php | Size : 5.32 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\Mime\Header;

use Symfony\Component\Mime\Encoder\Rfc2231Encoder;

/**
 * @author Chris Corbyn
 */
final class ParameterizedHeader extends UnstructuredHeader
{
    /**
     * RFC 2231's definition of a token.
     *
     * @var string
     */
    public const TOKEN_REGEX = '(?:[\x21\x23-\x27\x2A\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7E]+)';

private $encoder;
    private $parameters = [];

public function __construct(string $name, string $value, array $parameters = [])
    {
        parent::__construct($name, $value);

foreach ($parameters as $k => $v) {
            $this->setParameter($k, $v);
        }

if ('content-type' !== strtolower($name)) {
            $this->encoder = new Rfc2231Encoder();
        }
    }

public function setParameter(string $parameter, ?string $value)
    {
        $this->setParameters(array_merge($this->getParameters(), [$parameter => $value]));
    }

public function getParameter(string $parameter): string
    {
        return $this->getParameters()[$parameter] ?? '';
    }

/**
     * @param string[] $parameters
     */
    public function setParameters(array $parameters)
    {
        $this->parameters = $parameters;
    }

/**
     * @return string[]
     */
    public function getParameters(): array
    {
        return $this->parameters;
    }

public function getBodyAsString(): string
    {
        $body = parent::getBodyAsString();
        foreach ($this->parameters as $name => $value) {
            if (null !== $value) {
                $body .= '; '.$this->createParameter($name, $value);
            }
        }

return $body;
    }

/**
     * Generate a list of all tokens in the final header.
     *
     * This doesn't need to be overridden in theory, but it is for implementation
     * reasons to prevent potential breakage of attributes.
     */
    protected function toTokens(string $string = null): array
    {
        $tokens = parent::toTokens(parent::getBodyAsString());

// Try creating any parameters
        foreach ($this->parameters as $name => $value) {
            if (null !== $value) {
                // Add the semi-colon separator
                $tokens[\count($tokens) - 1] .= ';';
                $tokens = array_merge($tokens, $this->generateTokenLines(' '.$this->createParameter($name, $value)));
            }
        }

return $tokens;
    }

/**
     * Render an RFC 2047 compliant header parameter from the $name and $value.
     */
    private function createParameter(string $name, string $value): string
    {
        $origValue = $value;

$encoded = false;
        // Allow room for parameter name, indices, "=" and DQUOTEs
        $maxValueLength = $this->getMaxLineLength() - \strlen($name.'=*N"";') - 1;
        $firstLineOffset = 0;

// If it's not already a valid parameter value...
        if (!preg_match('/^'.self::TOKEN_REGEX.'$/D', $value)) {
            // TODO: text, or something else??
            // ... and it's not ascii
            if (!preg_match('/^[\x00-\x08\x0B\x0C\x0E-\x7F]*$/D', $value)) {
                $encoded = true;
                // Allow space for the indices, charset and language
                $maxValueLength = $this->getMaxLineLength() - \strlen($name.'*N*="";') - 1;
                $firstLineOffset = \strlen($this->getCharset()."'".$this->getLanguage()."'");
            }
        }

// Encode if we need to
        if ($encoded || \strlen($value) > $maxValueLength) {
            if (null !== $this->encoder) {
                $value = $this->encoder->encodeString($origValue, $this->getCharset(), $firstLineOffset, $maxValueLength);
            } else {
                // We have to go against RFC 2183/2231 in some areas for interoperability
                $value = $this->getTokenAsEncodedWord($origValue);
                $encoded = false;
            }
        }

$valueLines = $this->encoder ? explode("\r\n", $value) : [$value];

// Need to add indices
        if (\count($valueLines) > 1) {
            $paramLines = [];
            foreach ($valueLines as $i => $line) {
                $paramLines[] = $name.'*'.$i.$this->getEndOfParameterValue($line, true, 0 === $i);
            }

return implode(";\r\n ", $paramLines);
        } else {
            return $name.$this->getEndOfParameterValue($valueLines[0], $encoded, true);
        }
    }

/**
     * Returns the parameter value from the "=" and beyond.
     *
     * @param string $value to append
     */
    private function getEndOfParameterValue(string $value, bool $encoded = false, bool $firstLine = false): string
    {
        $forceHttpQuoting = 'content-disposition' === strtolower($this->getName()) && 'form-data' === $this->getValue();
        if ($forceHttpQuoting || !preg_match('/^'.self::TOKEN_REGEX.'$/D', $value)) {
            $value = '"'.$value.'"';
        }
        $prepend = '=';
        if ($encoded) {
            $prepend = '*=';
            if ($firstLine) {
                $prepend = '*='.$this->getCharset()."'".$this->getLanguage()."'";
            }
        }

return $prepend.$value;
    }
}

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