<?php
/* $Id: mysql_charsets.lib.php,v 2.41 2005/11/17 12:42:38 cybot_tm Exp $ */
// vim: expandtab sw=4 ts=4 sts=4:

if (PMA_MYSQL_INT_VERSION >= 40100){

    $res = PMA_DBI_query('SHOW CHARACTER SET;');

    $mysql_charsets = array();
    while ($row = PMA_DBI_fetch_assoc($res)) {
        $mysql_charsets[] = $row['Charset'];
        // never used
        //$mysql_charsets_maxlen[$row['Charset']] = $row['Maxlen'];
        $mysql_charsets_descriptions[$row['Charset']] = $row['Description'];
    }
    @PMA_DBI_free_result( $res );

    $mysql_charsets_count = count($mysql_charsets);
    sort($mysql_charsets, SORT_STRING);

    $mysql_collations = array_flip($mysql_charsets);
    $mysql_default_collations = $mysql_collations_flat = $mysql_charsets_available = $mysql_collations_available = array();

    $res = PMA_DBI_query('SHOW COLLATION;');
    while ($row = PMA_DBI_fetch_assoc($res)) {
        if (!is_array($mysql_collations[$row['Charset']])) {
            $mysql_collations[$row['Charset']] = array($row['Collation']);
        } else {
            $mysql_collations[$row['Charset']][] = $row['Collation'];
        }
        $mysql_collations_flat[] = $row['Collation'];
        if ((isset($row['D']) && $row['D'] == 'Y') || (isset($row['Default']) && $row['Default'] == 'Yes')) {
            $mysql_default_collations[$row['Charset']] = $row['Collation'];
        }
        //$mysql_collations_available[$row['Collation']] = !isset($row['Compiled']) || $row['Compiled'] == 'Yes';
        $mysql_collations_available[$row['Collation']] = TRUE;
        $mysql_charsets_available[$row['Charset']] = !empty($mysql_charsets_available[$row['Charset']]) || !empty($mysql_collations_available[$row['Collation']]);
    }
    @PMA_DBI_free_result( $res );
    unset( $res, $row );

    $mysql_collations_count = count($mysql_collations_flat);
    sort($mysql_collations_flat, SORT_STRING);
    foreach ($mysql_collations AS $key => $value) {
        sort($mysql_collations[$key], SORT_STRING);
        reset($mysql_collations[$key]);
    }
    unset( $key, $value );

    define('PMA_CSDROPDOWN_COLLATION', 0);
    define('PMA_CSDROPDOWN_CHARSET',   1);

    function PMA_generateCharsetDropdownBox($type = PMA_CSDROPDOWN_COLLATION, $name = NULL, $id = NULL, $default = NULL, $label = TRUE, $indent = 0, $submitOnChange = FALSE, $displayUnavailable = FALSE) {
        global $mysql_charsets, $mysql_charsets_descriptions, $mysql_charsets_available, $mysql_collations, $mysql_collations_available;

        if (empty($name)) {
            if ($type == PMA_CSDROPDOWN_COLLATION) {
                $name = 'collation';
            } else {
                $name = 'character_set';
            }
        }

        $spacer = '';
        for ($i = 1; $i <= $indent; $i++) $spacer .= '    ';

        $return_str  = $spacer . '<select xml:lang="en" dir="ltr" name="' . htmlspecialchars($name) . '"' . (empty($id) ? '' : ' id="' . htmlspecialchars($id) . '"') . ($submitOnChange ? ' onchange="this.form.submit();"' : '') . '>' . "\n";
        if ($label) {
            $return_str .= $spacer . '    <option value="">' . ($type == PMA_CSDROPDOWN_COLLATION ? $GLOBALS['strCollation'] : $GLOBALS['strCharset']) . '</option>' . "\n";
        }
        $return_str .= $spacer . '    <option value=""></option>' . "\n";
        foreach ($mysql_charsets as $current_charset) {
            if (!$mysql_charsets_available[$current_charset]) {
                continue;
            }
            $current_cs_descr = empty($mysql_charsets_descriptions[$current_charset]) ? $current_charset : $mysql_charsets_descriptions[$current_charset];
            if ($type == PMA_CSDROPDOWN_COLLATION) {
                $return_str .= $spacer . '    <optgroup label="' . $current_charset . '" title="' . $current_cs_descr . '">' . "\n";
                foreach ($mysql_collations[$current_charset] as $current_collation) {
                    if (!$mysql_collations_available[$current_collation]) {
                        continue;
                    }
                    $return_str .= $spacer . '        <option value="' . $current_collation . '" title="' . PMA_getCollationDescr($current_collation) . '"' . ($default == $current_collation ? ' selected="selected"' : '') . '>' . $current_collation . '</option>' . "\n";
                }
                $return_str .= $spacer . '    </optgroup>' . "\n";
            } else {
                $return_str .= $spacer . '    <option value="' . $current_charset . '" title="' . $current_cs_descr . '"' . ($default == $current_charset ? ' selected="selected"' : '') . '>' . $current_charset . '</option>' . "\n";
            }
        }
        $return_str .= $spacer . '</select>' . "\n";

        return $return_str;
    }

    function PMA_generateCharsetQueryPart($collation) {
        list($charset) = explode('_', $collation);
        return ' CHARACTER SET ' . $charset . ($charset == $collation ? '' : ' COLLATE ' . $collation);
    }

    /**
     * returns collation of given db
     *
     * @uses    PMA_MYSQL_INT_VERSION
     * @uses    PMA_DBI_fetch_value()
     * @uses    PMA_DBI_select_db()
     * @uses    PMA_sqlAddSlashes()
     * @uses    $GLOBALS['db']
     * @param   string  $db     name of db
     * @return  string  collation of $db
     */
    function PMA_getDbCollation( $db ) {
        if ( PMA_MYSQL_INT_VERSION >= 50000 && $db == 'information_schema' ) {
            // We don't have to check the collation of the virtual
            // information_schema database: We know it!
            return 'utf8_general_ci';
        }
        if ( PMA_MYSQL_INT_VERSION >= 50006 ) {
            // Since MySQL 5.0.6, we don't have to parse SHOW CREATE DATABASE anymore.
            return PMA_DBI_fetch_value('SELECT DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA WHERE SCHEMA_NAME = \'' . PMA_sqlAddSlashes($db) . '\' LIMIT 1;');
        } elseif ( PMA_MYSQL_INT_VERSION >= 40101 ) {
            // MySQL 4.1.0 does not support seperate charset settings
            // for databases.
            PMA_DBI_select_db( $db );
            $return = PMA_DBI_fetch_value( 'SHOW VARIABLES LIKE "collation_database"', 0, 1 );
            if ( ! empty( $GLOBALS['db'] ) && $db !== $GLOBALS['db'] ) {
                PMA_DBI_select_db( $GLOBALS['db'] );
            }
            return $return;
        }
        return '';
    }

} else {
    function PMA_getDbCollation( $db ) { return PMA_getServerCollation(); }
}

/**
 * returns default server collation from show variables
 *
 * @uses    PMA_DBI_fetch_value()
 * @return  string  $server_collation
 */
function PMA_getServerCollation() {
    return PMA_DBI_fetch_value(
        'SHOW VARIABLES LIKE \'collation_server\'', 0, 1 );
}

/**
 * returns description for given collation
 *
 * @uses    is_array()
 * @uses    explode()
 * @uses    count()
 * @uses    $GLOBALS['str[Languages|Sorting]']
 *
 * @param   string  $collation  MySQL collation string
 * @return  string  collation description
 */
function PMA_getCollationDescr( $collation ) {
    static $collation_cache;

    if (!is_array($collation_cache)) {
        $collation_cache = array();
    } elseif (isset($collation_cache[$collation])) {
        return $collation_cache[$collation];
    }

    if ($collation == 'binary') {
        return $GLOBALS['strBinary'];
    }
    $parts = explode('_', $collation);
    if (count($parts) == 1) {
        $parts[1] = 'general';
    } elseif ($parts[1] == 'ci' || $parts[1] == 'cs') {
        $parts[2] = $parts[1];
        $parts[1] = 'general';
    }
    $descr = '';
    switch ($parts[1]) {
        case 'bulgarian':
            $descr = $GLOBALS['strBulgarian'];
            break;
        case 'chinese':
            if ($parts[0] == 'gb2312' || $parts[0] == 'gbk') {
                $descr = $GLOBALS['strSimplifiedChinese'];
            } elseif ($parts[0] == 'big5') {
                $descr = $GLOBALS['strTraditionalChinese'];
            }
            break;
        case 'ci':
            $descr = $GLOBALS['strCaseInsensitive'];
            break;
        case 'cs':
            $descr = $GLOBALS['strCaseSensitive'];
            break;
        case 'croatian':
            $descr = $GLOBALS['strCroatian'];
            break;
        case 'czech':
            $descr = $GLOBALS['strCzech'];
            break;
        case 'danish':
            $descr = $GLOBALS['strDanish'];
            break;
        case 'english':
            $descr = $GLOBALS['strEnglish'];
            break;
        case 'esperanto':
            $descr = $GLOBALS['strEsperanto'];
            break;
        case 'estonian':
            $descr = $GLOBALS['strEstonian'];
            break;
        case 'german1':
            $descr = $GLOBALS['strGerman'] . ' (' . $GLOBALS['strDictionary'] . ')';
            break;
        case 'german2':
            $descr = $GLOBALS['strGerman'] . ' (' . $GLOBALS['strPhoneBook'] . ')';
            break;
        case 'hungarian':
            $descr = $GLOBALS['strHungarian'];
            break;
        case 'icelandic':
            $descr = $GLOBALS['strIcelandic'];
            break;
        case 'japanese':
            $descr = $GLOBALS['strJapanese'];
            break;
        case 'latvian':
            $descr = $GLOBALS['strLatvian'];
            break;
        case 'lithuanian':
            $descr = $GLOBALS['strLithuanian'];
            break;
        case 'korean':
            $descr = $GLOBALS['strKorean'];
            break;
        case 'persian':
            $descr = $GLOBALS['strPersian'];
            break;
        case 'polish':
            $descr = $GLOBALS['strPolish'];
            break;
        case 'roman':
            $descr = $GLOBALS['strWestEuropean'];
            break;
        case 'romanian':
            $descr = $GLOBALS['strRomanian'];
            break;
        case 'slovak':
            $descr = $GLOBALS['strSlovak'];
            break;
        case 'slovenian':
            $descr = $GLOBALS['strSlovenian'];
            break;
        case 'spanish':
            $descr = $GLOBALS['strSpanish'];
            break;
        case 'spanish2':
            $descr = $GLOBALS['strTraditionalSpanish'];
            break;
        case 'swedish':
            $descr = $GLOBALS['strSwedish'];
            break;
        case 'thai':
            $descr = $GLOBALS['strThai'];
            break;
        case 'turkish':
            $descr = $GLOBALS['strTurkish'];
            break;
        case 'ukrainian':
            $descr = $GLOBALS['strUkrainian'];
            break;
        case 'unicode':
            $descr = $GLOBALS['strUnicode'] . ' (' . $GLOBALS['strMultilingual'] . ')';
            break;
        case 'bin':
            $is_bin = TRUE;
        case 'general':
            switch ($parts[0]) {
                // Unicode charsets
                case 'ucs2':
                case 'utf8':
                    $descr = $GLOBALS['strUnicode'] . ' (' . $GLOBALS['strMultilingual'] . ')';
                    break;
                // West European charsets
                case 'ascii':
                case 'cp850':
                case 'dec8':
                case 'hp8':
                case 'latin1':
                case 'macroman':
                    $descr = $GLOBALS['strWestEuropean'] . ' (' . $GLOBALS['strMultilingual'] . ')';
                    break;
                // Central European charsets
                case 'cp1250':
                case 'cp852':
                case 'latin2':
                case 'macce':
                    $descr = $GLOBALS['strCentralEuropean'] . ' (' . $GLOBALS['strMultilingual'] . ')';
                    break;
                // Russian charsets
                case 'cp866':
                case 'koi8r':
                    $descr = $GLOBALS['strRussian'];
                    break;
                // Simplified Chinese charsets
                case 'gb2312':
                case 'gbk':
                    $descr = $GLOBALS['strSimplifiedChinese'];
                    break;
                // Japanese charsets
                case 'sjis':
                case 'ujis':
                case 'cp932':
                case 'eucjpms':
                    $descr = $GLOBALS['strJapanese'];
                    break;
                // Baltic charsets
                case 'cp1257':
                case 'latin7':
                    $descr = $GLOBALS['strBaltic'] . ' (' . $GLOBALS['strMultilingual'] . ')';
                    break;
                // Other
                case 'armscii8':
                case 'armscii':
                    $descr = $GLOBALS['strArmenian'];
                    break;
                case 'big5':
                    $descr = $GLOBALS['strTraditionalChinese'];
                    break;
                case 'cp1251':
                    $descr = $GLOBALS['strCyrillic'] . ' (' . $GLOBALS['strMultilingual'] . ')';
                    break;
                case 'cp1256':
                    $descr = $GLOBALS['strArabic'];
                    break;
                case 'euckr':
                    $descr = $GLOBALS['strKorean'];
                    break;
                case 'hebrew':
                    $descr = $GLOBALS['strHebrew'];
                    break;
                case 'geostd8':
                    $descr = $GLOBALS['strGeorgian'];
                    break;
                case 'greek':
                    $descr = $GLOBALS['strGreek'];
                    break;
                case 'keybcs2':
                    $descr = $GLOBALS['strCzechSlovak'];
                    break;
                case 'koi8u':
                    $descr = $GLOBALS['strUkrainian'];
                    break;
                case 'latin5':
                    $descr = $GLOBALS['strTurkish'];
                    break;
                case 'swe7':
                    $descr = $GLOBALS['strSwedish'];
                    break;
                case 'tis620':
                    $descr = $GLOBALS['strThai'];
                    break;
                default:
                    $descr = $GLOBALS['strUnknown'];
                    break;
            }
            if (!empty($is_bin)) {
                $descr .= ', ' . $GLOBALS['strBinary'];
            }
            break;
        default: $descr = $GLOBALS['strUnknown'];
    }
    if (!empty($parts[2])) {
        if ($parts[2] == 'ci') {
            $descr .= ', ' . $GLOBALS['strCaseInsensitive'];
        } elseif ($parts[2] == 'cs') {
            $descr .= ', ' . $GLOBALS['strCaseSensitive'];
        }
    }

    $collation_cache[$collation] = $descr;
    return $descr;
}
?>
