101 lines
2.0 KiB
PHP
Executable File
101 lines
2.0 KiB
PHP
Executable File
<?php
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define('FP_SORTING', SORT_DESC);
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class cache_filelister extends fs_filelister {
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var $_cachefile = null;
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var $_offset = 0;
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var $_nodesize = 30;
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var $_keysize = 12;
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// sub-classes will fill the above variables on constructing
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function cache_filelister() {
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if (!$this->_cachefile)
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trigger_error('CACHE: no cache file specified', E_USER_ERROR);
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$varname = $this->_varname;
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if (!file_exists($this->_cachefile.'.dat')) {
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trigger_error ("Can't find index '{$this->_cachefile}'", E_USER_ERROR);
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}
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$this->_tree = new caching_SBPT(
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fopen($this->_cachefile.'.dat', 'rb'),
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fopen(INDEX_DIR.'index.strings.dat', 'rb'),
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256,
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$this->_offset,
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$this->_chunksize,
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$this->_keysize
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);
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$this->_tree->open();
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#return $this->_list;
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}
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function walker() {
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return $this->_tree->walker();
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}
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function length() {
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return $this->_tree->length();
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}
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function save() {
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trigger_error('Cannot save() a cache', E_USER_ERROR);
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/*
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krsort($this->_list);
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$succ = io_write_file($this->_cachefile, serialize($this->_list));
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if (!$succ){
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trigger_error("Error while saving data in {$this->_cachefile}",
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E_USER_WARNING);
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return false;
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} else return $this->_list;
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*/
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}
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function getList() {
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trigger_error('Cannot getlist from cache', E_USER_WARNING);
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#return $this->_list;
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}
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function get($id) {
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return $this->_tree->getitem($id);
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#return isset($this->_list[$id])? $this->_list[$id] : false;
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}
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function add($id, $val) {
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trigger_error('Cannot add to a cache', E_USER_ERROR) ;
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$this->_list[$id]=$val;
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return $this->save();
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}
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function delete($entryid) {
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trigger_error('Cannot delete from a cache', E_USER_ERROR) ;
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$cache =& $this->_list;
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unset($cache[$entryid]); // if id found, it is deleted
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return $this->save();
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}
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function purge() {
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trigger_error('cannot purge', E_USER_ERROR);
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return fs_delete($this->_cachefile);
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}
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}
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?>
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