/phpmorphy/src-bak/graminfo/graminfo.php

<?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);

        }

    }

}