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Merge files.

Julio Montoya 10 年之前
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9c13c98876
共有 2 個文件被更改,包括 220 次插入455 次删除
  1. 220 5
      main/inc/lib/internationalization.lib.php
  2. 0 450
      main/inc/lib/internationalization_internal.lib.php

+ 220 - 5
main/inc/lib/internationalization.lib.php

@@ -1123,9 +1123,6 @@ function api_html_entity_decode($string, $quote_style = ENT_COMPAT, $encoding =
     if (empty($encoding)) {
         $encoding = _api_mb_internal_encoding();
     }
-    if (_api_html_entity_supports($encoding)) {
-        return html_entity_decode($string, $quote_style, $encoding);
-    }
     if (api_is_encoding_supported($encoding)) {
         if (!api_is_utf8($encoding)) {
             $string = api_utf8_encode($string, $encoding);
@@ -1858,7 +1855,225 @@ function get_plugin_lang($variable, $pluginName) {
 }
 
 /**
- * Functions for internal use behind this API
+ * Returns an array of translated week days and months, short and normal names.
+ * @param string $language (optional)	Language id. If it is ommited, the current interface language is assumed.
+ * @return array						Returns a multidimensional array with translated week days and months.
  */
+function &_api_get_day_month_names($language = null) {
+    static $date_parts = array();
+    if (empty($language)) {
+        $language = api_get_interface_language();
+    }
+    if (!isset($date_parts[$language])) {
+        $week_day = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
+        $month = array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');
+        for ($i = 0; $i < 7; $i++) {
+            $date_parts[$language]['days_short'][] = get_lang($week_day[$i].'Short', '', $language);
+            $date_parts[$language]['days_long'][] = get_lang($week_day[$i].'Long', '', $language);
+        }
+        for ($i = 0; $i < 12; $i++) {
+            $date_parts[$language]['months_short'][] = get_lang($month[$i].'Short', '', $language);
+            $date_parts[$language]['months_long'][] = get_lang($month[$i].'Long', '', $language);
+        }
+    }
+    return $date_parts[$language];
+}
+
+/**
+ * Returns returns person name convention for a given language.
+ * @param string $language	The input language.
+ * @param string $type		The type of the requested convention.
+ * It may be 'format' for name order convention or 'sort_by' for name sorting convention.
+ * @return mixed Depending of the requested type,
+ * the returned result may be string or boolean; null is returned on error;
+ */
+function _api_get_person_name_convention($language, $type)
+{
+    static $conventions;
+    $language = api_purify_language_id($language);
+    if (!isset($conventions)) {
+        $file = dirname(__FILE__).'/internationalization_database/name_order_conventions.php';
+        if (file_exists($file)) {
+            $conventions = include ($file);
+        } else {
+            $conventions = array(
+                'english' => array(
+                    'format' => 'title first_name last_name',
+                    'sort_by' => 'first_name'
+                )
+            );
+        }
+        // Overwrite classic conventions
+        $customConventions = api_get_configuration_value('name_order_conventions');
+
+        if (!empty($customConventions)) {
+            foreach ($customConventions as $key => $data) {
+                $conventions[$key] = $data;
+            }
+        }
+
+        $search1 = array('FIRST_NAME', 'LAST_NAME', 'TITLE');
+        $replacement1 = array('%F', '%L', '%T');
+        $search2 = array('first_name', 'last_name', 'title');
+        $replacement2 = array('%f', '%l', '%t');
+        foreach (array_keys($conventions) as $key) {
+            $conventions[$key]['format'] = str_replace($search1, $replacement1, $conventions[$key]['format']);
+            $conventions[$key]['format'] = _api_validate_person_name_format(_api_clean_person_name(str_replace('%', ' %', str_ireplace($search2, $replacement2, $conventions[$key]['format']))));
+            $conventions[$key]['sort_by'] = strtolower($conventions[$key]['sort_by']) != 'last_name' ? true : false;
+        }
+    }
+    switch ($type) {
+        case 'format':
+            return is_string($conventions[$language]['format']) ? $conventions[$language]['format'] : '%t %f %l';
+        case 'sort_by':
+            return is_bool($conventions[$language]['sort_by']) ? $conventions[$language]['sort_by'] : true;
+    }
+    return null;
+}
+
+/**
+ * Replaces non-valid formats for person names with the default (English) format.
+ * @param string $format	The input format to be verified.
+ * @return bool				Returns the same format if is is valid, otherwise returns a valid English format.
+ */
+function _api_validate_person_name_format($format) {
+    if (empty($format) || stripos($format, '%f') === false || stripos($format, '%l') === false) {
+        return '%t %f %l';
+    }
+    return $format;
+}
+
+/**
+ * Removes leading, trailing and duplicate whitespace and/or commas in a full person name.
+ * Cleaning is needed for the cases when not all parts of the name are available or when the name is constructed using a "dirty" pattern.
+ * @param string $person_name	The input person name.
+ * @return string				Returns cleaned person name.
+ */
+function _api_clean_person_name($person_name) {
+    return preg_replace(array('/\s+/', '/, ,/', '/,+/', '/^[ ,]/', '/[ ,]$/'), array(' ', ', ', ',', '', ''), $person_name);
+}
+
+/**
+ * Appendix to "Multibyte string conversion functions"
+ */
+
+/**
+ * This is a php-implementation of a function that is similar to mb_convert_encoding() from mbstring extension.
+ * The function converts a given string from one to another character encoding.
+ * @param string $string					The string being converted.
+ * @param string $to_encoding				The encoding that $string is being converted to.
+ * @param string $from_encoding				The encoding that $string is being converted from.
+ * @return string							Returns the converted string.
+ */
+function _api_convert_encoding(&$string, $to_encoding, $from_encoding)
+{
+    return mb_convert_encoding($string, $to_encoding, $from_encoding);
+}
+
+/**
+ * This function determines the name of corresponding to a given encoding conversion table.
+ * It is able to deal with some aliases of the encoding.
+ * @param string $encoding		The given encoding identificator, for example 'WINDOWS-1252'.
+ * @return string				Returns the name of the corresponding conversion table, for the same example - 'CP1252'.
+ */
+function _api_get_character_map_name($encoding) {
+    static $character_map_selector;
+    if (!isset($character_map_selector)) {
+        $file = dirname(__FILE__).'/internationalization_database/conversion/character_map_selector.php';
+        if (file_exists($file)) {
+            $character_map_selector = include ($file);
+        } else {
+            $character_map_selector = array();
+        }
+    }
+    return isset($character_map_selector[$encoding]) ? $character_map_selector[$encoding] : '';
+}
+
+/**
+ * Appendix to "String comparison"
+ */
+
+/**
+ * A reverse function from php-core function strnatcmp(), performs string comparison in reverse natural (alpha-numerical) order.
+ * @param string $string1		The first string.
+ * @param string $string2		The second string.
+ * @return int					Returns 0 if $string1 = $string2; >0 if $string1 < $string2; <0 if $string1 > $string2.
+ */
+function _api_strnatrcmp($string1, $string2) {
+    return strnatcmp($string2, $string1);
+}
+
+/**
+ * ICU locales (accessible through intl extension).
+ */
+
+/**
+ * Appendix to "Encoding management functions"
+ */
+
+/**
+ * Sets/Gets internal character encoding of the common string functions within the PHP mbstring extension.
+ * @param string $encoding (optional)	When this parameter is given, the function sets the internal encoding.
+ * @return string						When $encoding parameter is not given, the function returns the internal encoding.
+ * Note: This function is used in the global initialization script for setting the internal encoding to the platform's character set.
+ * @link http://php.net/manual/en/function.mb-internal-encoding
+ */
+function _api_mb_internal_encoding($encoding = null)
+{
+    return mb_internal_encoding($encoding);
+}
+
+/**
+ * Checks whether the specified encoding is supported by the PHP mbstring extension.
+ * @param string $encoding	The specified encoding.
+ * @return bool				Returns TRUE when the specified encoding is supported, FALSE othewise.
+ */
+function _api_mb_supports($encoding) {
+    static $supported = array();
+    if (!isset($supported[$encoding])) {
+        if (MBSTRING_INSTALLED) {
+            $supported[$encoding] = api_equal_encodings($encoding, mb_list_encodings(), true);
+        } else {
+            $supported[$encoding] = false;
+        }
+    }
+    return $supported[$encoding];
+}
+
+/**
+ * Checks whether the specified encoding is supported by the PHP iconv extension.
+ * @param string $encoding	The specified encoding.
+ * @return bool				Returns TRUE when the specified encoding is supported, FALSE othewise.
+ */
+function _api_iconv_supports($encoding) {
+    static $supported = array();
+    if (!isset($supported[$encoding])) {
+        if (ICONV_INSTALLED) {
+            $enc = api_refine_encoding_id($encoding);
+            if ($enc != 'HTML-ENTITIES') {
+                $test_string = '';
+                for ($i = 32; $i < 128; $i++) {
+                    $test_string .= chr($i);
+                }
+                $supported[$encoding] = (@iconv_strlen($test_string, $enc)) ? true : false;
+            } else {
+                $supported[$encoding] = false;
+            }
+        } else {
+            $supported[$encoding] = false;
+        }
+    }
+    return $supported[$encoding];
+}
+
+// This function checks whether the function _api_convert_encoding() (the php-
+// implementation) is able to convert from/to a given encoding.
+function _api_convert_encoding_supports($encoding) {
+    static $supports = array();
+    if (!isset($supports[$encoding])) {
+        $supports[$encoding] = _api_get_character_map_name(api_refine_encoding_id($encoding)) != '';
+    }
+    return $supports[$encoding];
+}
+
 
-require_once dirname(__FILE__).'/internationalization_internal.lib.php';

+ 0 - 450
main/inc/lib/internationalization_internal.lib.php

@@ -1,450 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-
-/**
- * File: internationalization_internal.lib.php
- * Main API extension library for Chamilo 1.8.7 LMS,
- * contains functions for internal use only.
- * License: GNU General Public License Version 3 (Free Software Foundation)
- * @author Ivan Tcholakov, <ivantcholakov@gmail.com>, 2009, 2010
- * @author More authors, mentioned in the correpsonding fragments of this source
- *
- * Note: All functions and data structures here are not to be used directly.
- * See the file internationalization.lib.php which contains the "public" API.
- * @package chamilo.library
- */
-/**
- * Global variables used by some callback functions
- */
-$_api_encoding = null;
-$_api_collator = null;
-
-/**
- * Appendix to "Language recognition"
- * Based on the publication:
- * W. B. Cavnar and J. M. Trenkle. N-gram-based text categorization.
- * Proceedings of SDAIR-94, 3rd Annual Symposium on Document Analysis
- * and Information Retrieval, 1994.
- * @link http://citeseer.ist.psu.edu/cache/papers/cs/810/http:zSzzSzwww.info.unicaen.frzSz~giguetzSzclassifzSzcavnar_trenkle_ngram.pdf/n-gram-based-text.pdf
- */
-/**
- * Appendix to "Date and time formats"
- */
-
-/**
- * Returns an array of translated week days and months, short and normal names.
- * @param string $language (optional)	Language indentificator. If it is omited, the current interface language is assumed.
- * @return array						Returns a multidimensional array with translated week days and months.
- */
-function &_api_get_day_month_names($language = null) {
-    static $date_parts = array();
-    if (empty($language)) {
-        $language = api_get_interface_language();
-    }
-    if (!isset($date_parts[$language])) {
-        $week_day = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
-        $month = array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');
-        for ($i = 0; $i < 7; $i++) {
-            $date_parts[$language]['days_short'][] = get_lang($week_day[$i].'Short', '', $language);
-            $date_parts[$language]['days_long'][] = get_lang($week_day[$i].'Long', '', $language);
-        }
-        for ($i = 0; $i < 12; $i++) {
-            $date_parts[$language]['months_short'][] = get_lang($month[$i].'Short', '', $language);
-            $date_parts[$language]['months_long'][] = get_lang($month[$i].'Long', '', $language);
-        }
-    }
-    return $date_parts[$language];
-}
-
-/**
- * Returns returns person name convention for a given language.
- * @param string $language	The input language.
- * @param string $type		The type of the requested convention.
- * It may be 'format' for name order convention or 'sort_by' for name sorting convention.
- * @return mixed Depending of the requested type,
- * the returned result may be string or boolean; null is returned on error;
- */
-function _api_get_person_name_convention($language, $type)
-{
-    static $conventions;
-    $language = api_purify_language_id($language);
-    if (!isset($conventions)) {
-        $file = dirname(__FILE__).'/internationalization_database/name_order_conventions.php';
-        if (file_exists($file)) {
-            $conventions = include ($file);
-        } else {
-            $conventions = array(
-                'english' => array(
-                    'format' => 'title first_name last_name',
-                    'sort_by' => 'first_name'
-                )
-            );
-        }
-        // Overwrite classic conventions
-        $customConventions = api_get_configuration_value('name_order_conventions');
-
-        if (!empty($customConventions)) {
-            foreach ($customConventions as $key => $data) {
-                $conventions[$key] = $data;
-            }
-        }
-
-        $search1 = array('FIRST_NAME', 'LAST_NAME', 'TITLE');
-        $replacement1 = array('%F', '%L', '%T');
-        $search2 = array('first_name', 'last_name', 'title');
-        $replacement2 = array('%f', '%l', '%t');
-        foreach (array_keys($conventions) as $key) {
-            $conventions[$key]['format'] = str_replace($search1, $replacement1, $conventions[$key]['format']);
-            $conventions[$key]['format'] = _api_validate_person_name_format(_api_clean_person_name(str_replace('%', ' %', str_ireplace($search2, $replacement2, $conventions[$key]['format']))));
-            $conventions[$key]['sort_by'] = strtolower($conventions[$key]['sort_by']) != 'last_name' ? true : false;
-        }
-    }
-    switch ($type) {
-        case 'format':
-            return is_string($conventions[$language]['format']) ? $conventions[$language]['format'] : '%t %f %l';
-        case 'sort_by':
-            return is_bool($conventions[$language]['sort_by']) ? $conventions[$language]['sort_by'] : true;
-    }
-    return null;
-}
-
-/**
- * Replaces non-valid formats for person names with the default (English) format.
- * @param string $format	The input format to be verified.
- * @return bool				Returns the same format if is is valid, otherwise returns a valid English format.
- */
-function _api_validate_person_name_format($format) {
-    if (empty($format) || stripos($format, '%f') === false || stripos($format, '%l') === false) {
-        return '%t %f %l';
-    }
-    return $format;
-}
-
-/**
- * Removes leading, trailing and duplicate whitespace and/or commas in a full person name.
- * Cleaning is needed for the cases when not all parts of the name are available or when the name is constructed using a "dirty" pattern.
- * @param string $person_name	The input person name.
- * @return string				Returns cleaned person name.
- */
-function _api_clean_person_name($person_name) {
-    return preg_replace(array('/\s+/', '/, ,/', '/,+/', '/^[ ,]/', '/[ ,]$/'), array(' ', ', ', ',', '', ''), $person_name);
-}
-
-/**
- * Appendix to "Multibyte string conversion functions"
- */
-
-/**
- * This is a php-implementation of a function that is similar to mb_convert_encoding() from mbstring extension.
- * The function converts a given string from one to another character encoding.
- * @param string $string					The string being converted.
- * @param string $to_encoding				The encoding that $string is being converted to.
- * @param string $from_encoding				The encoding that $string is being converted from.
- * @return string							Returns the converted string.
- */
-function _api_convert_encoding(&$string, $to_encoding, $from_encoding)
-{
-    return mb_convert_encoding($string, $to_encoding, $from_encoding);
-}
-
-/**
- * This function determines the name of corresponding to a given encoding conversion table.
- * It is able to deal with some aliases of the encoding.
- * @param string $encoding		The given encoding identificator, for example 'WINDOWS-1252'.
- * @return string				Returns the name of the corresponding conversion table, for the same example - 'CP1252'.
- */
-function _api_get_character_map_name($encoding) {
-    static $character_map_selector;
-    if (!isset($character_map_selector)) {
-        $file = dirname(__FILE__).'/internationalization_database/conversion/character_map_selector.php';
-        if (file_exists($file)) {
-            $character_map_selector = include ($file);
-        } else {
-            $character_map_selector = array();
-        }
-    }
-    return isset($character_map_selector[$encoding]) ? $character_map_selector[$encoding] : '';
-}
-
-/**
- * Takes an UTF-8 string and returns an array of integer values representing the Unicode characters.
- * Astral planes are supported ie. the ints in the output can be > 0xFFFF. Occurrances of the BOM are ignored.
- * Surrogates are not allowed.
- * @param string $string				The UTF-8 encoded string.
- * @return array						Returns an array of unicode code points.
- * @author Henri Sivonen, mailto:hsivonen@iki.fi
- * @link http://hsivonen.iki.fi/php-utf8/
- * @author Ivan Tcholakov, August 2009, adaptation for the Dokeos LMS.
- */
-function _api_utf8_to_unicode(&$string) {
-    $str = (string)$string;
-    $state = 0;			// cached expected number of octets after the current octet
-                        // until the beginning of the next UTF8 character sequence
-    $codepoint  = 0;	// cached Unicode character
-    $bytes = 1;			// cached expected number of octets in the current sequence
-    $result = array();
-    $len = api_byte_count($str);
-    for ($i = 0; $i < $len; $i++) {
-        $byte = ord($str[$i]);
-        if ($state == 0) {
-            // When state is zero we expect either a US-ASCII character or a multi-octet sequence.
-            if (0 == (0x80 & ($byte))) {
-                // US-ASCII, pass straight through.
-                $result[] = $byte;
-                $bytes = 1;
-            } else if (0xC0 == (0xE0 & ($byte))) {
-                // First octet of 2 octet sequence
-                $codepoint = ($byte);
-                $codepoint = ($codepoint & 0x1F) << 6;
-                $state = 1;
-                $bytes = 2;
-            } else if (0xE0 == (0xF0 & ($byte))) {
-                // First octet of 3 octet sequence
-                $codepoint = ($byte);
-                $codepoint = ($codepoint & 0x0F) << 12;
-                $state = 2;
-                $bytes = 3;
-            } else if (0xF0 == (0xF8 & ($byte))) {
-                // First octet of 4 octet sequence
-                $codepoint = ($byte);
-                $codepoint = ($codepoint & 0x07) << 18;
-                $state = 3;
-                $bytes = 4;
-            } else if (0xF8 == (0xFC & ($byte))) {
-                // First octet of 5 octet sequence.
-                // This is illegal because the encoded codepoint must be either
-                // (a) not the shortest form or
-                // (b) outside the Unicode range of 0-0x10FFFF.
-                // Rather than trying to resynchronize, we will carry on until the end
-                // of the sequence and let the later error handling code catch it.
-                $codepoint = ($byte);
-                $codepoint = ($codepoint & 0x03) << 24;
-                $state = 4;
-                $bytes = 5;
-            } else if (0xFC == (0xFE & ($byte))) {
-                // First octet of 6 octet sequence, see comments for 5 octet sequence.
-                $codepoint = ($byte);
-                $codepoint = ($codepoint & 1) << 30;
-                $state = 5;
-                $bytes = 6;
-            } else {
-                // Current octet is neither in the US-ASCII range nor a legal first octet of a multi-octet sequence.
-                $state = 0;
-                $codepoint = 0;
-                $bytes = 1;
-                $result[] = 0xFFFD; // U+FFFD REPLACEMENT CHARACTER is the general substitute character in the Unicode Standard.
-                continue ;
-            }
-        } else {
-            // When state is non-zero, we expect a continuation of the multi-octet sequence
-            if (0x80 == (0xC0 & ($byte))) {
-                // Legal continuation.
-                $shift = ($state - 1) * 6;
-                $tmp = $byte;
-                $tmp = ($tmp & 0x0000003F) << $shift;
-                $codepoint |= $tmp;
-                // End of the multi-octet sequence. $codepoint now contains the final Unicode codepoint to be output
-                if (0 == --$state) {
-                    // Check for illegal sequences and codepoints.
-                    // From Unicode 3.1, non-shortest form is illegal
-                    if (((2 == $bytes) && ($codepoint < 0x0080)) ||
-                        ((3 == $bytes) && ($codepoint < 0x0800)) ||
-                        ((4 == $bytes) && ($codepoint < 0x10000)) ||
-                        (4 < $bytes) ||
-                        // From Unicode 3.2, surrogate characters are illegal
-                        (($codepoint & 0xFFFFF800) == 0xD800) ||
-                        // Codepoints outside the Unicode range are illegal
-                        ($codepoint > 0x10FFFF)) {
-                        $state = 0;
-                        $codepoint = 0;
-                        $bytes = 1;
-                        $result[] = 0xFFFD;
-                        continue ;
-                    }
-                    if (0xFEFF != $codepoint) {
-                        // BOM is legal but we don't want to output it
-                        $result[] = $codepoint;
-                    }
-                    // Initialize UTF8 cache
-                    $state = 0;
-                    $codepoint = 0;
-                    $bytes = 1;
-                }
-            } else {
-                // ((0xC0 & (*in) != 0x80) && (state != 0))
-                // Incomplete multi-octet sequence.
-                $state = 0;
-                $codepoint = 0;
-                $bytes = 1;
-                $result[] = 0xFFFD;
-            }
-        }
-    }
-    return $result;
-}
-
-/**
- * Takes an array of Unicode codepoints and returns a UTF-8 string.
- * @param array $codepoints				An array of Unicode codepoints representing a string.
- * @return string						Returns a UTF-8 string constructed using the given codepoints.
- */
-function _api_utf8_from_unicode($codepoints) {
-    return implode(array_map('_api_utf8_chr', $codepoints));
-}
-
-/**
- * Takes a codepoint and returns its correspondent UTF-8 encoded character.
- * Astral planes are supported, ie the intger input can be > 0xFFFF. Occurrances of the BOM are ignored.
- * Surrogates are not allowed.
- * @param int $codepoint				The Unicode codepoint.
- * @return string						Returns the corresponding UTF-8 character.
- * @author Henri Sivonen, mailto:hsivonen@iki.fi
- * @link http://hsivonen.iki.fi/php-utf8/
- * @author Ivan Tcholakov, 2009, modifications for the Dokeos LMS.
- * @see _api_utf8_from_unicode()
- * This is a UTF-8 aware version of the function chr().
- * @link http://php.net/manual/en/function.chr.php
- */
-function _api_utf8_chr($codepoint) {
-    // ASCII range (including control chars)
-    if ( ($codepoint >= 0) && ($codepoint <= 0x007f) ) {
-        $result = chr($codepoint);
-    // 2 byte sequence
-    } else if ($codepoint <= 0x07ff) {
-        $result = chr(0xc0 | ($codepoint >> 6)) . chr(0x80 | ($codepoint & 0x003f));
-    // Byte order mark (skip)
-    } else if($codepoint == 0xFEFF) {
-        // nop -- zap the BOM
-        $result = '';
-    // Test for illegal surrogates
-    } else if ($codepoint >= 0xD800 && $codepoint <= 0xDFFF) {
-        // found a surrogate
-        $result = _api_utf8_chr(0xFFFD); // U+FFFD REPLACEMENT CHARACTER is the general substitute character in the Unicode Standard.
-    // 3 byte sequence
-    } else if ($codepoint <= 0xffff) {
-        $result = chr(0xe0 | ($codepoint >> 12)) . chr(0x80 | (($codepoint >> 6) & 0x003f)) . chr(0x80 | ($codepoint & 0x003f));
-    // 4 byte sequence
-    } else if ($codepoint <= 0x10ffff) {
-        $result = chr(0xf0 | ($codepoint >> 18)) . chr(0x80 | (($codepoint >> 12) & 0x3f)) . chr(0x80 | (($codepoint >> 6) & 0x3f)) . chr(0x80 | ($codepoint & 0x3f));
-    } else {
-         // out of range
-        $result = _api_utf8_chr(0xFFFD);
-    }
-    return $result;
-}
-
-
-/**
- * Appendix to "String comparison"
- */
-
-/**
- * A reverse function from php-core function strnatcmp(), performs string comparison in reverse natural (alpha-numerical) order.
- * @param string $string1		The first string.
- * @param string $string2		The second string.
- * @return int					Returns 0 if $string1 = $string2; >0 if $string1 < $string2; <0 if $string1 > $string2.
- */
-function _api_strnatrcmp($string1, $string2) {
-    return strnatcmp($string2, $string1);
-}
-
-/**
- * ICU locales (accessible through intl extension).
- */
-
-/**
- * Appendix to "Encoding management functions"
- */
-
-/**
- * Sets/Gets internal character encoding of the common string functions within the PHP mbstring extension.
- * @param string $encoding (optional)	When this parameter is given, the function sets the internal encoding.
- * @return string						When $encoding parameter is not given, the function returns the internal encoding.
- * Note: This function is used in the global initialization script for setting the internal encoding to the platform's character set.
- * @link http://php.net/manual/en/function.mb-internal-encoding
- */
-function _api_mb_internal_encoding($encoding = null)
-{
-    return mb_internal_encoding($encoding);
-}
-
-/**
- * Checks whether the specified encoding is supported by the PHP mbstring extension.
- * @param string $encoding	The specified encoding.
- * @return bool				Returns TRUE when the specified encoding is supported, FALSE othewise.
- */
-function _api_mb_supports($encoding) {
-    static $supported = array();
-    if (!isset($supported[$encoding])) {
-        if (MBSTRING_INSTALLED) {
-            $supported[$encoding] = api_equal_encodings($encoding, mb_list_encodings(), true);
-        } else {
-            $supported[$encoding] = false;
-        }
-    }
-    return $supported[$encoding];
-}
-
-/**
- * Checks whether the specified encoding is supported by the PHP iconv extension.
- * @param string $encoding	The specified encoding.
- * @return bool				Returns TRUE when the specified encoding is supported, FALSE othewise.
- */
-function _api_iconv_supports($encoding) {
-    static $supported = array();
-    if (!isset($supported[$encoding])) {
-        if (ICONV_INSTALLED) {
-            $enc = api_refine_encoding_id($encoding);
-            if ($enc != 'HTML-ENTITIES') {
-                $test_string = '';
-                for ($i = 32; $i < 128; $i++) {
-                    $test_string .= chr($i);
-                }
-                $supported[$encoding] = (@iconv_strlen($test_string, $enc)) ? true : false;
-            } else {
-                $supported[$encoding] = false;
-            }
-        } else {
-            $supported[$encoding] = false;
-        }
-    }
-    return $supported[$encoding];
-}
-
-// This function checks whether the function _api_convert_encoding() (the php-
-// implementation) is able to convert from/to a given encoding.
-function _api_convert_encoding_supports($encoding) {
-    static $supports = array();
-    if (!isset($supports[$encoding])) {
-        $supports[$encoding] = _api_get_character_map_name(api_refine_encoding_id($encoding)) != '';
-    }
-    return $supports[$encoding];
-}
-
-/**
- * Checks whether the specified encoding is supported by the html-entitiy related functions.
- * @param string $encoding	The specified encoding.
- * @return bool				Returns TRUE when the specified encoding is supported, FALSE othewise.
- */
-function _api_html_entity_supports($encoding) {
-    static $supports = array();
-    if (!isset($supports[$encoding])) {
-        // See http://php.net/manual/en/function.htmlentities.php
-        $html_entity_encodings = array(
-            'ISO-8859-1',
-            'ISO-8859-15',
-            'UTF-8',
-            'CP866',
-            'CP1251',
-            'CP1252',
-            'KOI8-R',
-            'BIG5', '950',
-            'GB2312', '936',
-            'BIG5-HKSCS',
-            'Shift_JIS', 'SJIS', '932',
-            'EUC-JP', 'EUCJP'
-        );
-        $supports[$encoding] = api_equal_encodings($encoding, $html_entity_encodings);
-    }
-    return $supports[$encoding];
-}