[Utf8] Create the component

Author: nicolas-grekas

src/Symfony/Component/Utf8/.gitignore

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+composer.lock
+phpunit.xml
+vendor/

src/Symfony/Component/Utf8/CHANGELOG.md

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+CHANGELOG
+=========
+
+3.3.0
+-----
+
+ * added the component

src/Symfony/Component/Utf8/LICENSE

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+Copyright (c) 2016-2017 Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

src/Symfony/Component/Utf8/README.md

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+Symfony UTF-8 component
+=======================
+
+This component provides strings hanling via an object oriented interface
+and deals with bytes, UTF-8 code points and grapheme clusters.

src/Symfony/Component/Utf8/TurkishUtf8.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Utf8;
+
+/**
+ * Turkish locale specialized version of Patchwork\Utf8.
+ */
+class TurkishUtf8 extends Utf8
+{
+    public static function strtocasefold($s, $full = true)
+    {
+        if (false !== strpos($s, 'İ')) {
+            $s = str_replace('İ', 'i', $s);
+        }
+
+        return parent::strtocasefold($s, $full);
+    }
+
+    public static function stripos($s, $needle, $offset = 0)
+    {
+        if (false !== strpos($needle, 'I')) {
+            $needle = str_replace('I', 'ı', $needle);
+        }
+        if (false !== strpos($needle, 'İ')) {
+            $needle = str_replace('İ', 'i', $needle);
+        }
+        if (false !== strpos($s, 'I')) {
+            $s = str_replace('I', 'ı', $s);
+        }
+        if (false !== strpos($s, 'İ')) {
+            $s = str_replace('İ', 'i', $s);
+        }
+
+        return parent::stripos($s, $needle, $offset);
+    }
+
+    public static function strripos($s, $needle, $offset = 0)
+    {
+        if (false !== strpos($needle, 'I')) {
+            $needle = str_replace('I', 'ı', $needle);
+        }
+        if (false !== strpos($needle, 'İ')) {
+            $needle = str_replace('İ', 'i', $needle);
+        }
+        if (false !== strpos($s, 'I')) {
+            $s = str_replace('I', 'ı', $s);
+        }
+        if (false !== strpos($s, 'İ')) {
+            $s = str_replace('İ', 'i', $s);
+        }
+
+        return parent::strripos($s, $needle, $offset);
+    }
+
+    public static function stristr($s, $needle, $before_needle = false)
+    {
+        $needle = self::stripos($s, $needle);
+        if (false === $needle) {
+            return false;
+        }
+        if ($before_needle) {
+            return self::substr($s, 0, $needle);
+        }
+
+        return self::substr($s, $needle);
+    }
+
+    public static function strrichr($s, $needle, $before_needle = false)
+    {
+        $needle = self::strripos($s, $needle);
+        if (false === $needle) {
+            return false;
+        }
+        if ($before_needle) {
+            return self::substr($s, 0, $needle);
+        }
+
+        return self::substr($s, $needle);
+    }
+
+    public static function strtolower($s)
+    {
+        if (false !== strpos($s, 'İ')) {
+            $s = str_replace('İ', 'i', $s);
+        }
+        if (false !== strpos($s, 'I')) {
+            $s = str_replace('I', 'ı', $s);
+        }
+
+        return parent::strtolower($s);
+    }
+
+    public static function strtoupper($s)
+    {
+        if (false !== strpos($s, 'i')) {
+            $s = str_replace('i', 'İ', $s);
+        }
+
+        return parent::strtoupper($s);
+    }
+
+    public static function str_ireplace($search, $replace, $subject, &$count = null)
+    {
+        $search = (array) $search;
+
+        foreach ($search as $i => $s) {
+            if ('' === $s .= '') {
+                $s = '/^(?<=.)$/';
+            } else {
+                $s = preg_quote($s, '/');
+                $s = strtr($s, array(
+                    'i' => '(?-i:[iİ])',
+                    'İ' => '(?-i:[iİ])',
+                    'ı' => '(?-i:[ıI])',
+                    'I' => '(?-i:[ıI])',
+                ));
+                $s = "/{$s}/ui";
+            }
+
+            $search[$i] = $s;
+        }
+
+        $subject = preg_replace($search, $replace, $subject, -1, $replace);
+        $count = $replace;
+
+        return $subject;
+    }
+
+    public static function ucfirst($s)
+    {
+        if ('i' === substr($s, 0, 1)) {
+            return 'İ'.substr($s, 1);
+        } else {
+            return parent::ucfirst($s);
+        }
+    }
+
+    public static function ucwords($s)
+    {
+        if (false !== strpos($s, 'i')) {
+            $s = preg_replace('/\bi/u', 'İ', $s);
+        }
+
+        return parent::ucwords($s);
+    }
+}