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<?php
/**
* This file is part of phpMorphy library
*
* Copyright c 2007-2008 Kamaev Vladimir <heromantor@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
interface phpMorphy_GramInfo_Interace {
/**
* Returns langugage for graminfo file
* @return string
*/
function getLocale();
/**
* Return encoding for graminfo file
* @return string
*/
function getEncoding();
/**
* Return size of character (cp1251 - 1, utf8 - 1, utf16 - 2, utf32 - 4 etc)
* @return int
*/
function getCharSize();
/**
* Return end of string value (usually string with \0 value of char_size + 1 length)
* @return string
*/
function getEnds();
/**
* Reads graminfo header
*
* @param int $offset
* @return array
*/
function readGramInfoHeader($offset);
/**
* Returns size of header struct
*/
function getGramInfoHeaderSize();
/**
* Read ancodes section for header retrieved with readGramInfoHeader
*
* @param array $info
* @return array
*/
function readAncodes($info);
/**
* Read flexias section for header retrieved with readGramInfoHeader
*
* @param array $info
* @return array
*/
function readFlexiaData($info);
/**
* Read all graminfo headers offsets, which can be used latter for readGramInfoHeader method
* @return array
*/
function readAllGramInfoOffsets();
function getHeader();
function readAllPartOfSpeech();
function readAllGrammems();
function readAllAncodes();
}
abstract class phpMorphy_GramInfo implements phpMorphy_GramInfo_Interace {
const HEADER_SIZE = 128;
protected
$resource,
$header,
$ends,
$ends_size;
protected function phpMorphy_GramInfo($resource, $header) {
$this->resource = $resource;
$this->header = $header;
$this->ends = str_repeat("\0", $header['char_size'] + 1);
$this->ends_size = $GLOBALS['__phpmorphy_strlen']($this->ends);
}
static function create(phpMorphy_Storage $storage, $lazy) {
if($lazy) {
return new phpMorphy_GramInfo_Proxy($storage);
}
$header = phpMorphy_GramInfo::readHeader(
$storage->read(0, self::HEADER_SIZE)
);
if(!phpMorphy_GramInfo::validateHeader($header)) {
throw new phpMorphy_Exception('Invalid graminfo format');
}
$storage_type = $storage->getTypeAsString();
$file_path = dirname(__FILE__) . "/access/graminfo_{$storage_type}.php";
$clazz = 'phpMorphy_GramInfo_' . ucfirst($storage_type);
require_once($file_path);
return new $clazz($storage->getResource(), $header);
}
function getLocale() {
return $this->header['lang'];
}
function getEncoding() {
return $this->header['encoding'];
}
function getCharSize() {
return $this->header['char_size'];
}
function getEnds() {
return $this->ends;
}
function getHeader() {
return $this->header;
}
static protected function readHeader($headerRaw) {
$header = unpack(
'Vver/Vis_be/Vflex_count_old/' .
'Vflex_offset/Vflex_size/Vflex_count/Vflex_index_offset/Vflex_index_size/' .
'Vposes_offset/Vposes_size/Vposes_count/Vposes_index_offset/Vposes_index_size/' .
'Vgrammems_offset/Vgrammems_size/Vgrammems_count/Vgrammems_index_offset/Vgrammems_index_size/' .
'Vancodes_offset/Vancodes_size/Vancodes_count/Vancodes_index_offset/Vancodes_index_size/' .
'Vchar_size/',
$headerRaw
);
$offset = 24 * 4;
$len = ord($GLOBALS['__phpmorphy_substr']($headerRaw, $offset++, 1));
$header['lang'] = rtrim($GLOBALS['__phpmorphy_substr']($headerRaw, $offset, $len));
$offset += $len;
$len = ord($GLOBALS['__phpmorphy_substr']($headerRaw, $offset++, 1));
$header['encoding'] = rtrim($GLOBALS['__phpmorphy_substr']($headerRaw, $offset, $len));
return $header;
}
static protected function validateHeader($header) {
if(
3 != $header['ver'] ||
1 == $header['is_be']
) {
return false;
}
return true;
}
protected function cleanupCString($string) {
if(false !== ($pos = $GLOBALS['__phpmorphy_strpos']($string, $this->ends))) {
$string = $GLOBALS['__phpmorphy_substr']($string, 0, $pos);
}
return $string;
}
abstract protected function readSectionIndex($offset, $count);
protected function readSectionIndexAsSize($offset, $count, $total_size) {
if(!$count) {
return array();
}
$index = $this->readSectionIndex($offset, $count);
$index[$count] = $index[0] + $total_size;
for($i = 0; $i < $count; $i++) {
$index[$i] = $index[$i + 1] - $index[$i];
}
unset($index[$count]);
return $index;
}
};
class phpMorphy_GramInfo_Decorator implements phpMorphy_GramInfo_Interace {
protected $info;
function phpMorphy_GramInfo_Decorator(phpMorphy_GramInfo_Interace $info) {
$this->info = $info;
}
function readGramInfoHeader($offset) { return $this->info->readGramInfoHeader($offset); }
function getGramInfoHeaderSize() { return $this->info->getGramInfoHeaderSize($offset); }
function readAncodes($info) { return $this->info->readAncodes($info); }
function readFlexiaData($info) { return $this->info->readFlexiaData($info); }
function readAllGramInfoOffsets() { return $this->info->readAllGramInfoOffsets(); }
function readAllPartOfSpeech() { return $this->info->readAllPartOfSpeech(); }
function readAllGrammems() { return $this->info->readAllGrammems(); }
function readAllAncodes() { return $this->info->readAllAncodes(); }
function getLocale() { return $this->info->getLocale(); }
function getEncoding() { return $this->info->getEncoding(); }
function getCharSize() { return $this->info->getCharSize(); }
function getEnds() { return $this->info->getEnds(); }
function getHeader() { return $this->info->getHeader(); }
}
class phpMorphy_GramInfo_Proxy extends phpMorphy_GramInfo_Decorator {
protected $storage;
function __construct(phpMorphy_Storage $storage) {
$this->storage = $storage;
unset($this->info);
}
function __get($propName) {
if($propName == 'info') {
$this->info = phpMorphy_GramInfo::create($this->storage, false);
unset($this->storage);
return $this->info;
}
throw new phpMorphy_Exception("Unknown prop name '$propName'");
}
}
class phpMorphy_GramInfo_Proxy_WithHeader extends phpMorphy_GramInfo_Proxy {
protected
$cache,
$ends;
function __construct(phpMorphy_Storage $storage, $cacheFile) {
parent::__construct($storage);
$this->cache = $this->readCache($cacheFile);
$this->ends = str_repeat("\0", $this->getCharSize() + 1);
}
protected function readCache($fileName) {
if(!is_array($result = include($fileName))) {
throw new phpMorphy_Exception("Can`t get header cache from '$fileName' file'");
}
return $result;
}
function getLocale() {
return $this->cache['lang'];
}
function getEncoding() {
return $this->cache['encoding'];
}
function getCharSize() {
return $this->cache['char_size'];
}
function getEnds() {
return $this->ends;
}
function getHeader() {
return $this->cache;
}
}
class phpMorphy_GramInfo_RuntimeCaching extends phpMorphy_GramInfo_Decorator {
protected
$flexia = array(),
$ancodes = array();
function readFlexiaData($info) {
$offset = $info['offset'];
if(!isset($this->flexia_all[$offset])) {
$this->flexia_all[$offset] = $this->info->readFlexiaData($info);
}
return $this->flexia_all[$offset];
}
}
class phpMorphy_GramInfo_AncodeCache extends phpMorphy_GramInfo_Decorator {
public
$hits = 0,
$miss = 0;
protected
$cache;
function __construct(phpMorphy_GramInfo_Interace $inner, $resource) {
parent::__construct($inner);
if(false === ($this->cache = unserialize($resource->read(0, $resource->getFileSize())))) {
throw new phpMorphy_Exception("Can`t read ancodes cache");
}
}
function readAncodes($info) {
$offset = $info['offset'];
if(isset($this->cache[$offset])) {
$this->hits++;
return $this->cache[$offset];
} else {
// in theory misses never occur
$this->miss++;
return parent::readAncodes($info);
}
}
}