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Direktori : /home2/selectio/public_html/ecommerce-website/website/vendor/psy/psysh/src/Readline/Hoa/ |
Current File : /home2/selectio/public_html/ecommerce-website/website/vendor/psy/psysh/src/Readline/Hoa/Ustring.php |
<?php /** * Hoa * * * @license * * New BSD License * * Copyright © 2007-2017, Hoa community. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of the Hoa nor the names of its contributors may be * used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ namespace Psy\Readline\Hoa; /** * This class represents a UTF-8 string. * Please, see: * * http://www.ietf.org/rfc/rfc3454.txt, * * http://unicode.org/reports/tr9/, * * http://www.unicode.org/Public/6.0.0/ucd/UnicodeData.txt. */ class Ustring { /** * Check if ext/mbstring is available. */ public static function checkMbString(): bool { return \function_exists('mb_substr'); } /** * Get the number of column positions of a wide-character. * * This is a PHP implementation of wcwidth() and wcswidth() (defined in IEEE * Std 1002.1-2001) for Unicode, by Markus Kuhn. Please, see * http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c. * * The wcwidth(wc) function shall either return 0 (if wc is a null * wide-character code), or return the number of column positions to be * occupied by the wide-character code wc, or return -1 (if wc does not * correspond to a printable wide-character code). */ public static function getCharWidth(string $char): int { $char = (string) $char; $c = static::toCode($char); // Test for 8-bit control characters. if (0x0 === $c) { return 0; } if (0x20 > $c || (0x7F <= $c && $c < 0xA0)) { return -1; } // Non-spacing characters. if (0xAD !== $c && 0 !== \preg_match('#^[\p{Mn}\p{Me}\p{Cf}\x{1160}-\x{11ff}\x{200b}]#u', $char)) { return 0; } // If we arrive here, $c is not a combining C0/C1 control character. return 1 + (0x1100 <= $c && (0x115F >= $c || // Hangul Jamo init. consonants 0x2329 === $c || 0x232A === $c || (0x2E80 <= $c && 0xA4CF >= $c && 0x303F !== $c) || // CJK…Yi (0xAC00 <= $c && 0xD7A3 >= $c) || // Hangul Syllables (0xF900 <= $c && 0xFAFF >= $c) || // CJK Compatibility Ideographs (0xFE10 <= $c && 0xFE19 >= $c) || // Vertical forms (0xFE30 <= $c && 0xFE6F >= $c) || // CJK Compatibility Forms (0xFF00 <= $c && 0xFF60 >= $c) || // Fullwidth Forms (0xFFE0 <= $c && 0xFFE6 >= $c) || (0x20000 <= $c && 0x2FFFD >= $c) || (0x30000 <= $c && 0x3FFFD >= $c))); } /** * Check whether the character is printable or not. */ public static function isCharPrintable(string $char): bool { return 1 <= static::getCharWidth($char); } /** * Get a decimal code representation of a specific character. */ public static function toCode(string $char): int { $char = (string) $char; $code = \ord($char[0]); $bytes = 1; if (!($code & 0x80)) { // 0xxxxxxx return $code; } if (($code & 0xE0) === 0xC0) { // 110xxxxx $bytes = 2; $code = $code & ~0xC0; } elseif (($code & 0xF0) === 0xE0) { // 1110xxxx $bytes = 3; $code = $code & ~0xE0; } elseif (($code & 0xF8) === 0xF0) { // 11110xxx $bytes = 4; $code = $code & ~0xF0; } for ($i = 2; $i <= $bytes; $i++) { // 10xxxxxx $code = ($code << 6) + (\ord($char[$i - 1]) & ~0x80); } return $code; } }