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phpmyadmin/libraries/mysql_charsets.lib.php
Michal Čihař 15dfc4879e Drop collation description cache. 
It really does not improve performance much and it just consumes memory.
Anyway on most pages this function is called just once for each
collation, so all it does is filling up the cache but never using it.
2010-07-26 13:29:29 +02:00

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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
*
* @package phpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
*
*/
if (! PMA_cacheExists('mysql_charsets_count', true)) {
$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);
PMA_cacheSet('mysql_charsets', $GLOBALS['mysql_charsets'], true);
PMA_cacheSet('mysql_charsets_descriptions', $GLOBALS['mysql_charsets_descriptions'], true);
PMA_cacheSet('mysql_charsets_count', $GLOBALS['mysql_charsets_count'], true);
PMA_cacheSet('mysql_charsets_available', $GLOBALS['mysql_charsets_available'], true);
PMA_cacheSet('mysql_collations', $GLOBALS['mysql_collations'], true);
PMA_cacheSet('mysql_default_collations', $GLOBALS['mysql_default_collations'], true);
PMA_cacheSet('mysql_collations_flat', $GLOBALS['mysql_collations_flat'], true);
PMA_cacheSet('mysql_collations_count', $GLOBALS['mysql_collations_count'], true);
PMA_cacheSet('mysql_collations_available', $GLOBALS['mysql_collations_available'], true);
} else {
$GLOBALS['mysql_charsets'] = PMA_cacheGet('mysql_charsets', true);
$GLOBALS['mysql_charsets_descriptions'] = PMA_cacheGet('mysql_charsets_descriptions', true);
$GLOBALS['mysql_charsets_count'] = PMA_cacheGet('mysql_charsets_count', true);
$GLOBALS['mysql_charsets_available'] = PMA_cacheGet('mysql_charsets_available', true);
$GLOBALS['mysql_collations'] = PMA_cacheGet('mysql_collations', true);
$GLOBALS['mysql_default_collations'] = PMA_cacheGet('mysql_default_collations', true);
$GLOBALS['mysql_collations_flat'] = PMA_cacheGet('mysql_collations_flat', true);
$GLOBALS['mysql_collations_count'] = PMA_cacheGet('mysql_collations_count', true);
$GLOBALS['mysql_collations_available'] = PMA_cacheGet('mysql_collations_available', true);
}
define('PMA_CSDROPDOWN_COLLATION', 0);
define('PMA_CSDROPDOWN_CHARSET', 1);
function PMA_generateCharsetDropdownBox($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';
}
}
$return_str = '<select xml:lang="en" dir="ltr" name="'
. htmlspecialchars($name) . '"'
. (empty($id) ? '' : ' id="' . htmlspecialchars($id) . '"')
. ($submitOnChange ? ' onchange="this.form.submit();"' : '') . '>' . "\n";
if ($label) {
$return_str .= '<option value="">'
. ($type == PMA_CSDROPDOWN_COLLATION ? __('Collation') : __('Charset'))
. '</option>' . "\n";
}
$return_str .= '<option value=""></option>' . "\n";
foreach ($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 .= '<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 .= '<option value="' . $current_collation
. '" title="' . PMA_getCollationDescr($current_collation) . '"'
. ($default == $current_collation ? ' selected="selected"' : '') . '>'
. $current_collation . '</option>' . "\n";
}
$return_str .= '</optgroup>' . "\n";
} else {
$return_str .= '<option value="' . $current_charset
. '" title="' . $current_cs_descr . '"'
. ($default == $current_charset ? ' selected="selected"' : '') . '>'
. $current_charset . '</option>' . "\n";
}
}
$return_str .= '</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_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 ($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 (! $GLOBALS['cfg']['Server']['DisableIS']) {
// this is slow with thousands of databases
return PMA_DBI_fetch_value('SELECT DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA WHERE SCHEMA_NAME = \'' . PMA_sqlAddSlashes($db) . '\' LIMIT 1;');
} else {
PMA_DBI_select_db($db);
$return = PMA_DBI_fetch_value('SHOW VARIABLES LIKE \'collation_database\'', 0, 1);
if ($db !== $GLOBALS['db']) {
PMA_DBI_select_db($GLOBALS['db']);
}
return $return;
}
}
/**
* 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()
*
* @param string $collation MySQL collation string
* @return string collation description
*/
function PMA_getCollationDescr($collation) {
if ($collation == 'binary') {
return __('Binary');
}
$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':
$descr = __('Bulgarian');
break;
case 'chinese':
if ($parts[0] == 'gb2312' || $parts[0] == 'gbk') {
$descr = __('Simplified Chinese');
} elseif ($parts[0] == 'big5') {
$descr = __('Traditional Chinese');
}
break;
case 'ci':
$descr = __('case-insensitive');
break;
case 'cs':
$descr = __('case-sensitive');
break;
case 'croatian':
$descr = __('Croatian');
break;
case 'czech':
$descr = __('Czech');
break;
case 'danish':
$descr = __('Danish');
break;
case 'english':
$descr = __('English');
break;
case 'esperanto':
$descr = __('Esperanto');
break;
case 'estonian':
$descr = __('Estonian');
break;
case 'german1':
$descr = __('German') . ' (' . __('dictionary') . ')';
break;
case 'german2':
$descr = __('German') . ' (' . __('phone book') . ')';
break;
case 'hungarian':
$descr = __('Hungarian');
break;
case 'icelandic':
$descr = __('Icelandic');
break;
case 'japanese':
$descr = __('Japanese');
break;
case 'latvian':
$descr = __('Latvian');
break;
case 'lithuanian':
$descr = __('Lithuanian');
break;
case 'korean':
$descr = __('Korean');
break;
case 'persian':
$descr = __('Persian');
break;
case 'polish':
$descr = __('Polish');
break;
case 'roman':
$descr = __('West European');
break;
case 'romanian':
$descr = __('Romanian');
break;
case 'slovak':
$descr = __('Slovak');
break;
case 'slovenian':
$descr = __('Slovenian');
break;
case 'spanish':
$descr = __('Spanish');
break;
case 'spanish2':
$descr = __('Traditional Spanish');
break;
case 'swedish':
$descr = __('Swedish');
break;
case 'thai':
$descr = __('Thai');
break;
case 'turkish':
$descr = __('Turkish');
break;
case 'ukrainian':
$descr = __('Ukrainian');
break;
case 'unicode':
$descr = __('Unicode') . ' (' . __('multilingual') . ')';
break;
case 'bin':
$is_bin = TRUE;
case 'general':
switch ($parts[0]) {
// Unicode charsets
case 'ucs2':
case 'utf8':
$descr = __('Unicode') . ' (' . __('multilingual') . ')';
break;
// West European charsets
case 'ascii':
case 'cp850':
case 'dec8':
case 'hp8':
case 'latin1':
case 'macroman':
$descr = __('West European') . ' (' . __('multilingual') . ')';
break;
// Central European charsets
case 'cp1250':
case 'cp852':
case 'latin2':
case 'macce':
$descr = __('Central European') . ' (' . __('multilingual') . ')';
break;
// Russian charsets
case 'cp866':
case 'koi8r':
$descr = __('Russian');
break;
// Simplified Chinese charsets
case 'gb2312':
case 'gbk':
$descr = __('Simplified Chinese');
break;
// Japanese charsets
case 'sjis':
case 'ujis':
case 'cp932':
case 'eucjpms':
$descr = __('Japanese');
break;
// Baltic charsets
case 'cp1257':
case 'latin7':
$descr = __('Baltic') . ' (' . __('multilingual') . ')';
break;
// Other
case 'armscii8':
case 'armscii':
$descr = __('Armenian');
break;
case 'big5':
$descr = __('Traditional Chinese');
break;
case 'cp1251':
$descr = __('Cyrillic') . ' (' . __('multilingual') . ')';
break;
case 'cp1256':
$descr = __('Arabic');
break;
case 'euckr':
$descr = __('Korean');
break;
case 'hebrew':
$descr = __('Hebrew');
break;
case 'geostd8':
$descr = __('Georgian');
break;
case 'greek':
$descr = __('Greek');
break;
case 'keybcs2':
$descr = __('Czech-Slovak');
break;
case 'koi8u':
$descr = __('Ukrainian');
break;
case 'latin5':
$descr = __('Turkish');
break;
case 'swe7':
$descr = __('Swedish');
break;
case 'tis620':
$descr = __('Thai');
break;
default:
$descr = __('unknown');
break;
}
if (!empty($is_bin)) {
$descr .= ', ' . __('Binary');
}
break;
default: $descr = __('unknown');
}
if (!empty($parts[2])) {
if ($parts[2] == 'ci') {
$descr .= ', ' . __('case-insensitive');
} elseif ($parts[2] == 'cs') {
$descr .= ', ' . __('case-sensitive');
}
}
$collation_cache[$collation] = $descr;
return $descr;
}
?>
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