From ada3beb0a6c649bd9bfc6a87b2fe69ee8ae563f7 Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Sat, 1 Feb 2020 08:57:06 +0100
Subject: initial checkin

---
 include/utf8/mbstring/core.php | 144 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 include/utf8/mbstring/core.php

(limited to 'include/utf8/mbstring/core.php')

diff --git a/include/utf8/mbstring/core.php b/include/utf8/mbstring/core.php
new file mode 100644
index 0000000..bea1c32
--- /dev/null
+++ b/include/utf8/mbstring/core.php
@@ -0,0 +1,144 @@
+<?php
+
+/**
+* @version $Id: core.php,v 1.5 2006/02/28 22:12:25 harryf Exp $
+* @package utf8
+* @subpackage strings
+*/
+
+// Define UTF8_CORE as required
+if (!defined('UTF8_CORE'))
+	define('UTF8_CORE', true);
+
+/**
+* Wrapper round mb_strlen
+* Assumes you have mb_internal_encoding to UTF-8 already
+* Note: this function does not count bad bytes in the string - these
+* are simply ignored
+* @param string UTF-8 string
+* @return int number of UTF-8 characters in string
+* @package utf8
+* @subpackage strings
+*/
+function utf8_strlen($str)
+{
+	return mb_strlen($str);
+}
+
+/**
+* Assumes mbstring internal encoding is set to UTF-8
+* Wrapper around mb_strpos
+* Find position of first occurrence of a string
+* @param string haystack
+* @param string needle (you should validate this with utf8_is_valid)
+* @param integer offset in characters (from left)
+* @return mixed integer position or FALSE on failure
+* @package utf8
+* @subpackage strings
+*/
+function utf8_strpos($str, $search, $offset = false)
+{
+	// Strip unvalid characters
+	$str = utf8_bad_strip($str);
+
+	if ($offset === false)
+		return mb_strpos($str, $search);
+	else
+		return mb_strpos($str, $search, $offset);
+}
+
+/**
+* Assumes mbstring internal encoding is set to UTF-8
+* Wrapper around mb_strrpos
+* Find position of last occurrence of a char in a string
+* @param string haystack
+* @param string needle (you should validate this with utf8_is_valid)
+* @param integer (optional) offset (from left)
+* @return mixed integer position or FALSE on failure
+* @package utf8
+* @subpackage strings
+*/
+function utf8_strrpos($str, $search, $offset = false)
+{
+	// Strip unvalid characters
+	$str = utf8_bad_strip($str);
+
+	if (!$offset)
+	{
+		// Emulate behaviour of strrpos rather than raising warning
+		if (empty($str))
+			return false;
+
+		return mb_strrpos($str, $search);
+	}
+	else
+	{
+		if (!is_int($offset))
+		{
+			trigger_error('utf8_strrpos expects parameter 3 to be long', E_USER_WARNING);
+			return false;
+		}
+
+		$str = mb_substr($str, $offset);
+
+		if (($pos = mb_strrpos($str, $search)) !== false)
+			return $pos + $offset;
+
+		return false;
+	}
+}
+
+/**
+* Assumes mbstring internal encoding is set to UTF-8
+* Wrapper around mb_substr
+* Return part of a string given character offset (and optionally length)
+* @param string
+* @param integer number of UTF-8 characters offset (from left)
+* @param integer (optional) length in UTF-8 characters from offset
+* @return mixed string or FALSE if failure
+* @package utf8
+* @subpackage strings
+*/
+function utf8_substr($str, $offset, $length = false)
+{
+	if ($length === false)
+		return mb_substr($str, $offset);
+	else
+		return mb_substr($str, $offset, $length);
+}
+
+/**
+* Assumes mbstring internal encoding is set to UTF-8
+* Wrapper around mb_strtolower
+* Make a string lowercase
+* Note: The concept of a characters "case" only exists is some alphabets
+* such as Latin, Greek, Cyrillic, Armenian and archaic Georgian - it does
+* not exist in the Chinese alphabet, for example. See Unicode Standard
+* Annex #21: Case Mappings
+* @param string
+* @return mixed either string in lowercase or FALSE is UTF-8 invalid
+* @package utf8
+* @subpackage strings
+*/
+function utf8_strtolower($str)
+{
+	return mb_strtolower($str);
+}
+
+/**
+* Assumes mbstring internal encoding is set to UTF-8
+* Wrapper around mb_strtoupper
+* Make a string uppercase
+* Note: The concept of a characters "case" only exists is some alphabets
+* such as Latin, Greek, Cyrillic, Armenian and archaic Georgian - it does
+* not exist in the Chinese alphabet, for example. See Unicode Standard
+* Annex #21: Case Mappings
+* @param string
+* @return mixed either string in lowercase or FALSE is UTF-8 invalid
+* @package utf8
+* @subpackage strings
+*/
+function utf8_strtoupper($str)
+{
+	return mb_strtoupper($str);
+}
-- 
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