137 lines
2.7 KiB
PHP
137 lines
2.7 KiB
PHP
<?php
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/**
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* Client for querying zhdaemon
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*
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*/
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class ZhClient {
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var $mHost, $mPort, $mFP, $mConnected;
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/**
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* Constructor
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*
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* @access private
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*/
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function ZhClient($host, $port) {
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$this->mHost = $host;
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$this->mPort = $port;
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$this->mConnected = $this->connect();
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}
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/**
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* Check if connection to zhdaemon is successful
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*/
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function isconnected() {
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return $this->mConnected;
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}
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/**
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* Establish conncetion
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*
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* @access private
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*/
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function connect() {
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wfSuppressWarnings();
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$errno = $errstr = '';
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$this->mFP = fsockopen($this->mHost, $this->mPort, $errno, $errstr, 30);
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wfRestoreWarnings();
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if(!$this->mFP) {
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return false;
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}
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return true;
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}
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/**
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* Query the daemon and return the result
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*
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* @access private
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*/
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function query($request) {
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if(!$this->mConnected)
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return false;
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fwrite($this->mFP, $request);
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$result=fgets($this->mFP, 1024);
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list($status, $len) = explode(" ", $result);
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if($status == 'ERROR') {
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//$len is actually the error code...
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print "zhdaemon error $len<br />\n";
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return false;
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}
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$bytesread=0;
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$data='';
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while(!feof($this->mFP) && $bytesread<$len) {
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$str= fread($this->mFP, $len-$bytesread);
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$bytesread += strlen($str);
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$data .= $str;
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}
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//data should be of length $len. otherwise something is wrong
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if(strlen($data) != $len)
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return false;
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return $data;
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}
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/**
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* Convert the input to a different language variant
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*
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* @param $text string: input text
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* @param $tolang string: language variant
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* @return string the converted text
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*/
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function convert($text, $tolang) {
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$len = strlen($text);
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$q = "CONV $tolang $len\n$text";
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$result = $this->query($q);
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if(!$result)
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$result = $text;
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return $result;
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}
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/**
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* Convert the input to all possible variants
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*
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* @param $text string: input text
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* @return array langcode => converted_string
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*/
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function convertToAllVariants($text) {
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$len = strlen($text);
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$q = "CONV ALL $len\n$text";
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$result = $this->query($q);
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if(!$result)
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return false;
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list($infoline, $data) = explode('|', $result, 2);
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$info = explode(";", $infoline);
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$ret = array();
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$i=0;
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foreach($info as $variant) {
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list($code, $len) = explode(' ', $variant);
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$ret[strtolower($code)] = substr($data, $i, $len);
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$i+=$len;
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}
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return $ret;
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}
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/**
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* Perform word segmentation
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*
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* @param $text string: input text
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* @return string segmented text
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*/
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function segment($text) {
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$len = strlen($text);
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$q = "SEG $len\n$text";
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$result = $this->query($q);
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if(!$result) {// fallback to character based segmentation
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$result = ZhClientFake::segment($text);
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}
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return $result;
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}
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/**
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* Close the connection
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*/
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function close() {
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fclose($this->mFP);
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}
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}
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