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Edit File : Escaper.php \| Size : 3.74 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\Yaml; /* * Escaper encapsulates escaping rules for single and double-quoted * YAML strings. * * @author Matthew Lewinski <matthew@lewinski.org> * * @internal / class Escaper { // Characters that would cause a dumped string to require double quoting. public const REGEX_CHARACTER_TO_ESCAPE = "[\\x00-\\x1f]\|\x7f\|\xc2\x85\|\xc2\xa0\|\xe2\x80\xa8\|\xe2\x80\xa9"; // Mapping arrays for escaping a double quoted string. The backslash is // first to ensure proper escaping because str_replace operates iteratively // on the input arrays. This ordering of the characters avoids the use of strtr, // which performs more slowly. private const ESCAPEES = ['\\', '\\\\', '\\"', '"', "\x00", "\x01", "\x02", "\x03", "\x04", "\x05", "\x06", "\x07", "\x08", "\x09", "\x0a", "\x0b", "\x0c", "\x0d", "\x0e", "\x0f", "\x10", "\x11", "\x12", "\x13", "\x14", "\x15", "\x16", "\x17", "\x18", "\x19", "\x1a", "\x1b", "\x1c", "\x1d", "\x1e", "\x1f", "\x7f", "\xc2\x85", "\xc2\xa0", "\xe2\x80\xa8", "\xe2\x80\xa9", ]; private const ESCAPED = ['\\\\', '\\"', '\\\\', '\\"', '\\0', '\\x01', '\\x02', '\\x03', '\\x04', '\\x05', '\\x06', '\\a', '\\b', '\\t', '\\n', '\\v', '\\f', '\\r', '\\x0e', '\\x0f', '\\x10', '\\x11', '\\x12', '\\x13', '\\x14', '\\x15', '\\x16', '\\x17', '\\x18', '\\x19', '\\x1a', '\\e', '\\x1c', '\\x1d', '\\x1e', '\\x1f', '\\x7f', '\\N', '\\_', '\\L', '\\P', ]; /* * Determines if a PHP value would require double quoting in YAML. * * @param string $value A PHP value / public static function requiresDoubleQuoting(string $value): bool { return 0 < preg_match('/'.self::REGEX_CHARACTER_TO_ESCAPE.'/u', $value); } /* * Escapes and surrounds a PHP value with double quotes. * * @param string $value A PHP value / public static function escapeWithDoubleQuotes(string $value): string { return sprintf('"%s"', str_replace(self::ESCAPEES, self::ESCAPED, $value)); } /* * Determines if a PHP value would require single quoting in YAML. * * @param string $value A PHP value / public static function requiresSingleQuoting(string $value): bool { // Determines if a PHP value is entirely composed of a value that would // require single quoting in YAML. if (\in_array(strtolower($value), ['null', '~', 'true', 'false', 'y', 'n', 'yes', 'no', 'on', 'off'])) { return true; } // Determines if the PHP value contains any single characters that would // cause it to require single quoting in YAML. return 0 < preg_match('/[ \s \' " \: \{ \} \[ \] , & \ \# \?] \| \A[ \- ? \| < > = ! % @ ` \p{Zs}]/xu', $value); } /** * Escapes and surrounds a PHP value with single quotes. * * @param string $value A PHP value */ public static function escapeWithSingleQuotes(string $value): string { return sprintf("'%s'", str_replace('\'', '\'\'', $value)); } } Back

Edit File : Escaper.php | Size : 3.74 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\Yaml;

/**
 * Escaper encapsulates escaping rules for single and double-quoted
 * YAML strings.
 *
 * @author Matthew Lewinski <matthew@lewinski.org>
 *
 * @internal
 */
class Escaper
{
    // Characters that would cause a dumped string to require double quoting.
    public const REGEX_CHARACTER_TO_ESCAPE = "[\\x00-\\x1f]|\x7f|\xc2\x85|\xc2\xa0|\xe2\x80\xa8|\xe2\x80\xa9";

// Mapping arrays for escaping a double quoted string. The backslash is
    // first to ensure proper escaping because str_replace operates iteratively
    // on the input arrays. This ordering of the characters avoids the use of strtr,
    // which performs more slowly.
    private const ESCAPEES = ['\\', '\\\\', '\\"', '"',
                                     "\x00",  "\x01",  "\x02",  "\x03",  "\x04",  "\x05",  "\x06",  "\x07",
                                     "\x08",  "\x09",  "\x0a",  "\x0b",  "\x0c",  "\x0d",  "\x0e",  "\x0f",
                                     "\x10",  "\x11",  "\x12",  "\x13",  "\x14",  "\x15",  "\x16",  "\x17",
                                     "\x18",  "\x19",  "\x1a",  "\x1b",  "\x1c",  "\x1d",  "\x1e",  "\x1f",
                                     "\x7f",
                                     "\xc2\x85", "\xc2\xa0", "\xe2\x80\xa8", "\xe2\x80\xa9",
                               ];
    private const ESCAPED = ['\\\\', '\\"', '\\\\', '\\"',
                                     '\\0',   '\\x01', '\\x02', '\\x03', '\\x04', '\\x05', '\\x06', '\\a',
                                     '\\b',   '\\t',   '\\n',   '\\v',   '\\f',   '\\r',   '\\x0e', '\\x0f',
                                     '\\x10', '\\x11', '\\x12', '\\x13', '\\x14', '\\x15', '\\x16', '\\x17',
                                     '\\x18', '\\x19', '\\x1a', '\\e',   '\\x1c', '\\x1d', '\\x1e', '\\x1f',
                                     '\\x7f',
                                     '\\N', '\\_', '\\L', '\\P',
                              ];

/**
     * Determines if a PHP value would require double quoting in YAML.
     *
     * @param string $value A PHP value
     */
    public static function requiresDoubleQuoting(string $value): bool
    {
        return 0 < preg_match('/'.self::REGEX_CHARACTER_TO_ESCAPE.'/u', $value);
    }

/**
     * Escapes and surrounds a PHP value with double quotes.
     *
     * @param string $value A PHP value
     */
    public static function escapeWithDoubleQuotes(string $value): string
    {
        return sprintf('"%s"', str_replace(self::ESCAPEES, self::ESCAPED, $value));
    }

/**
     * Determines if a PHP value would require single quoting in YAML.
     *
     * @param string $value A PHP value
     */
    public static function requiresSingleQuoting(string $value): bool
    {
        // Determines if a PHP value is entirely composed of a value that would
        // require single quoting in YAML.
        if (\in_array(strtolower($value), ['null', '~', 'true', 'false', 'y', 'n', 'yes', 'no', 'on', 'off'])) {
            return true;
        }

// Determines if the PHP value contains any single characters that would
        // cause it to require single quoting in YAML.
        return 0 < preg_match('/[ \s \' " \: \{ \} \[ \] , & \* \# \?] | \A[ \- ? | < > = ! % @ ` \p{Zs}]/xu', $value);
    }

/**
     * Escapes and surrounds a PHP value with single quotes.
     *
     * @param string $value A PHP value
     */
    public static function escapeWithSingleQuotes(string $value): string
    {
        return sprintf("'%s'", str_replace('\'', '\'\'', $value));
    }
}

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