function load($use_cache = true)
{
// temporarely hide the cache display problem
// http://ez.no/community/bugs/char_transform_cache_file_is_not_valid_php
//$use_cache = false;
$cache_dir = "var/cache/codepages/";
$cache_filename = md5($this->InputCharsetCode . $this->OutputCharsetCode);
$cache = $cache_dir . $cache_filename . ".php";
if (!eZCodePage::exists($this->InputCharsetCode)) {
$input_file = eZCodePage::fileName($this->InputCharsetCode);
eZDebug::writeWarning("Couldn't load input codepage file {$input_file}", "eZCodePageMapper");
return false;
}
if (!eZCodePage::exists($this->OutputCharsetCode)) {
$output_file = eZCodePage::fileName($this->OutputCharsetCode);
eZDebug::writeWarning("Couldn't load output codepage file {$output_file}", "eZCodePageMapper");
return false;
}
$this->Valid = false;
if (file_exists($cache) and $use_cache) {
$cache_m = filemtime($cache);
if (eZCodePage::fileModification($this->InputCharsetCode) <= $cache_m and eZCodePage::fileModification($this->OutputCharsetCode) <= $cache_m) {
unset($eZCodePageMapperCacheCodeDate);
$in_out_map =& $this->InputOutputMap;
$out_in_map =& $this->OutputInputMap;
eZDebug::writeDebug('loading cache from: ' . $cache, __METHOD__);
include $cache;
if (isset($eZCodePageMapperCacheCodeDate) or $eZCodePageMapperCacheCodeDate == self::CACHE_CODE_DATE) {
$this->Valid = true;
return;
}
}
}
$this->InputOutputMap = array();
$this->OutputInputMap = array();
$input_codepage = eZCodePage::instance($this->InputCharsetCode);
$output_codepage = eZCodePage::instance($this->OutputCharsetCode);
if (!$input_codepage->isValid()) {
eZDebug::writeError("Input codepage for " . $this->InputCharsetCode . " is not valid", "eZCodePageMapper");
return false;
}
if (!$output_codepage->isValid()) {
eZDebug::writeError("Output codepage for " . $this->OutputCharsetCode . " is not valid", "eZCodePageMapper");
return false;
}
$min = max($input_codepage->minCharValue(), $output_codepage->minCharValue());
$max = min($input_codepage->maxCharValue(), $output_codepage->maxCharValue());
for ($i = $min; $i <= $max; ++$i) {
$code = $i;
$unicode = $input_codepage->codeToUnicode($code);
if ($unicode !== null) {
$output_code = $output_codepage->unicodeToCode($unicode);
if ($output_code !== null) {
$this->InputOutputMap[$code] = $output_code;
$this->OutputInputMap[$output_code] = $code;
}
}
}
}
function fileModification($charset_code)
{
$file = eZCodePage::fileName($charset_code);
if (!file_exists($file)) {
return false;
}
return filemtime($file);
}
