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xsplit.cpp
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xsplit.cpp
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2007 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: SZG |
+----------------------------------------------------------------------+
*/
/* $Id: header,v 1.16.2.1.2.1 2007/01/01 19:32:09 iliaa Exp $ */
extern "C" {
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_xsplit.h"
#include <fcntl.h>
#ifdef PHP_WIN32
# include <windows.h>
# include <io.h>
#else
#include <sys/mman.h>
#endif
}
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
#include <math.h>
#include "darts-clone.ex.h"
#include "lookup3.h"
using namespace std;
unsigned char UTF8CharLenTable[] =
{
/*
1-4: a leading byte of UTF-8 sequence, and the value is of its length
8: a content byte(Not a leading byte)
16: illegal byte, it never apperas in a UTF-8 sequence
*/
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //0-15
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //16-31
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //32-47
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //48-63
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //64-79
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //80-95
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //96-111
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, //112-127
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, //192-207
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, //208-223
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, //224-239
4, 4, 4, 4, 4, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16 //240-255
};
Darts::DoubleArray da;
#define SIZE_OF_RESULT_PAIR 256
/* If you declare any globals in php_xsplit.h uncomment this: */
ZEND_DECLARE_MODULE_GLOBALS(xsplit)
#define SAFE_STRING(s) ((s)?(s):"")
#define CHECK_DICT(dict_id) { if (dict_id==-1) { php_error(E_ERROR,"The dict can not be opened"); RETURN_FALSE; } }
typedef struct _dict {
void *mmapped_addr;
size_t size;
};
/* True global resources - no need for thread safety here */
static int le_xsplit_dict, le_xsplit_pdict;
/* {{{ xsplit_functions[]
*
* Every user visible function must have an entry in xsplit_functions[].
*/
zend_function_entry xsplit_functions[] = {
PHP_FE(xs_open, NULL)
PHP_FE(xs_build, NULL)
PHP_FE(xs_split, NULL)
PHP_FE(xs_search, NULL)
PHP_FE(xs_simhash, NULL)
PHP_FE(xs_simhash_wide, NULL)
PHP_FE(xs_hdist, NULL)
{NULL, NULL, NULL} /* Must be the last line in xsplit_functions[] */
};
/* }}} */
/* {{{ xsplit_module_entry
*/
zend_module_entry xsplit_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
STANDARD_MODULE_HEADER,
#endif
"xsplit",
xsplit_functions,
PHP_MINIT(xsplit),
PHP_MSHUTDOWN(xsplit),
PHP_RINIT(xsplit), /* Replace with NULL if there's nothing to do at request start */
PHP_RSHUTDOWN(xsplit), /* Replace with NULL if there's nothing to do at request end */
PHP_MINFO(xsplit),
#if ZEND_MODULE_API_NO >= 20010901
"0.1", /* Replace with version number for your extension */
#endif
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_XSPLIT
ZEND_GET_MODULE(xsplit)
#endif
/* {{{ set default dictionary so that it can be called if dicitonary is not specified
*/
static void _set_default_dict(int id TSRMLS_DC)
{
if (XSPLIT_G(default_dict) != -1) {
zend_list_delete(XSPLIT_G(default_dict));
}
XSPLIT_G(default_dict) = id;
zend_list_addref(id);
}
/* }}} */
/* {{{ close non-persistent dictionary, also used as a destructor
*/
static void _close_xsplit_dict(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
_dict *dict = (_dict *)rsrc->ptr;
/* ummap the mmapped memory */
#ifdef PHP_WIN32
UnmapViewOfFile (dict->mmapped_addr);
#else
munmap(dict->mmapped_addr,dict->size);
#endif
XSPLIT_G(num_dicts)--;
}
/* }}} */
/* {{{ close persistent dictionary, also used as a destructor
*/
static void _close_xsplit_pdict(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
_dict *dict = (_dict *)rsrc->ptr;
/* ummap the mmapped memory */
#ifdef PHP_WIN32
UnmapViewOfFile (dict->mmapped_addr);
#else
munmap(dict->mmapped_addr,dict->size);
#endif
XSPLIT_G(num_persistent)--;
XSPLIT_G(num_dicts)--;
}
/* }}} */
/* {{{ open dictionary
*/
static void _open_xsplit_dict(INTERNAL_FUNCTION_PARAMETERS, char *dict_file, size_t dict_file_len, zend_bool persistent) {
int fd;
size_t file_size;
void *mmapped_dict;
_dict *dict_ptr;
char *hashed_details=NULL;
int hashed_details_length;
hashed_details_length = spprintf(&hashed_details, 0, "xsplit_%s", SAFE_STRING(dict_file));
if (!XSPLIT_G(allow_persistent)) {
persistent=0;
}
if (persistent) {
zend_rsrc_list_entry *le;
/* try to find if we already have this dict in our persistent list */
if (zend_hash_find(&EG(persistent_list), hashed_details, hashed_details_length+1, (void **) &le)==FAILURE) { /* we don't */
zend_rsrc_list_entry new_le;
if (XSPLIT_G(max_dicts)!=-1 && XSPLIT_G(num_dicts)>=XSPLIT_G(max_dicts)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Too many opened dicts (%ld)", XSPLIT_G(num_dicts));
efree(hashed_details);
RETURN_FALSE;
}
if (XSPLIT_G(max_persistent)!=-1 && XSPLIT_G(num_persistent)>=XSPLIT_G(max_persistent)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Too many opened persistent dicts (%ld)", XSPLIT_G(num_persistent));
efree(hashed_details);
RETURN_FALSE;
}
/*creating new mmapped dict*/
#ifdef PHP_WIN32
struct _stat sb;
if (_stat (dict_file, &sb) == -1)
#else
struct stat sb;
if (stat (dict_file, &sb) == -1)
#endif
return;
#ifdef PHP_WIN32
HANDLE mmf =
CreateFile (dict_file, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (mmf == INVALID_HANDLE_VALUE)
return;
HANDLE mmfv =
CreateFileMapping (mmf, NULL, PAGE_READONLY, 0, 0, NULL);
if (mmfv == INVALID_HANDLE_VALUE) {
CloseHandle (mmf);
return;
}
mmapped_dict =
MapViewOfFile (mmfv, FILE_MAP_READ, 0, 0, sb.st_size);
// The handles can be safely closed
CloseHandle (mmf);
CloseHandle (mmfv);
#else
if((fd = open(dict_file, O_RDONLY)) == -1) {
php_error(E_ERROR, "Can not open dictionary file");
RETURN_FALSE;
}
file_size = lseek(fd, 0, SEEK_END);
if(!(mmapped_dict = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0))) {
php_error(E_ERROR, "Can not map the dictionary into memory");
RETURN_FALSE;
}
#endif
dict_ptr = (_dict *) malloc(sizeof(_dict));
dict_ptr->mmapped_addr=mmapped_dict;
dict_ptr->size=sb.st_size;
/* hash it up */
Z_TYPE(new_le) = le_xsplit_pdict;
new_le.ptr = dict_ptr;
if (zend_hash_update(&EG(persistent_list), hashed_details, hashed_details_length+1, (void *) &new_le, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
RETURN_FALSE;
}
XSPLIT_G(num_persistent)++;
XSPLIT_G(num_dicts)++;
} else { /* The dict is in our list of persistent connections */
if (Z_TYPE_P(le) != le_xsplit_pdict) {
RETURN_FALSE;
}
dict_ptr=(_dict *)le->ptr;
}
ZEND_REGISTER_RESOURCE(return_value, dict_ptr, le_xsplit_pdict);
} else {/* non persistent */
zend_rsrc_list_entry *index_ptr, new_index_ptr;
if (zend_hash_find(&EG(regular_list), hashed_details, hashed_details_length+1,(void **) &index_ptr)==SUCCESS) {
int type;
long dict;
void *ptr;
if (Z_TYPE_P(index_ptr) != le_index_ptr) {
RETURN_FALSE;
}
dict = (long) index_ptr->ptr;
ptr = zend_list_find(dict,&type); /* check if the link is still there */
if (ptr && (type==le_xsplit_dict || type==le_xsplit_pdict)) {
zend_list_addref(dict);
Z_LVAL_P(return_value) = dict;
_set_default_dict(dict TSRMLS_CC);
Z_TYPE_P(return_value) = IS_RESOURCE;
efree(hashed_details);
return;
} else {
zend_hash_del(&EG(regular_list), hashed_details, hashed_details_length+1);
}
}
/* check if over the max opend dictionaries */
if (XSPLIT_G(max_dicts)!=-1 && XSPLIT_G(num_dicts)>=XSPLIT_G(max_dicts)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Too many opened dicts (%ld)", XSPLIT_G(num_dicts));
efree(hashed_details);
//MYSQL_DO_CONNECT_RETURN_FALSE();
RETURN_FALSE;
}
/*creating new mmapped dict*/
#ifdef PHP_WIN32
struct _stat sb;
if (_stat (dict_file, &sb) == -1)
#else
struct stat sb;
if (stat (dict_file, &sb) == -1)
#endif
return;
#ifdef PHP_WIN32
HANDLE mmf =
CreateFile (dict_file, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (mmf == INVALID_HANDLE_VALUE)
return;
HANDLE mmfv =
CreateFileMapping (mmf, NULL, PAGE_READONLY, 0, 0, NULL);
if (mmfv == INVALID_HANDLE_VALUE) {
CloseHandle (mmf);
return;
}
mmapped_dict =
MapViewOfFile (mmfv, FILE_MAP_READ, 0, 0, sb.st_size);
// The handles can be safely closed
CloseHandle (mmf);
CloseHandle (mmfv);
#else
if((fd = open(dict_file, O_RDONLY)) == -1) {
php_error(E_ERROR, "Can not open dictionary file");
RETURN_FALSE;
}
file_size = lseek(fd, 0, SEEK_END);
if(!(mmapped_dict = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, fd, 0))) {
php_error(E_ERROR, "Can not map the dictionary into memory");
RETURN_FALSE;
}
#endif
dict_ptr = (_dict *) malloc(sizeof(_dict));
dict_ptr->mmapped_addr=mmapped_dict;
dict_ptr->size=sb.st_size;
/* add it to the list */
ZEND_REGISTER_RESOURCE(return_value, dict_ptr, le_xsplit_dict);
/* add it to the hash */
new_index_ptr.ptr = (void *) Z_LVAL_P(return_value);
Z_TYPE(new_index_ptr) = le_index_ptr;
if (zend_hash_update(&EG(regular_list), hashed_details, hashed_details_length+1,(void *) &new_index_ptr, sizeof(zend_rsrc_list_entry), NULL)==FAILURE) {
efree(hashed_details);
RETURN_FALSE;
}
XSPLIT_G(num_dicts)++;
}
efree(hashed_details);
_set_default_dict(Z_LVAL_P(return_value) TSRMLS_CC);
}
/* }}} */
/* {{{ get default dictionary
*/
static long _get_default_dict(INTERNAL_FUNCTION_PARAMETERS)
{
if (XSPLIT_G(default_dict) == -1) { /*no dictionary opened yet, implicitly open one */
/* get default dictionary path specified in php.ini */
char *dict_file=INI_STR("xsplit.default_dict_file");
_open_xsplit_dict(INTERNAL_FUNCTION_PARAM_PASSTHRU, dict_file, strlen(dict_file), 1);
}
return XSPLIT_G(default_dict);
}
/* }}} */
/* {{{ compare function, used in hash sorting
*/
int getBestWordLength(Darts::DoubleArray::key_type *pText, size_t iTextLength) {
Darts::DoubleArray::result_pair_type dResultPair_A[64];
Darts::DoubleArray::result_pair_type dResultPair_B[64];
Darts::DoubleArray::result_pair_type dResultPair_C[64];
size_t iNum_A, iNum_B, iNum_C; //A B C stand for the first, sencod, third word in a chunk
register size_t iCur_A, iCur_B, iCur_C;
Darts::DoubleArray::key_type *pText_A, *pText_B, *pText_C;
size_t iTextLength_A, iTextLength_B, iTextLength_C;
//we use a float 10-element-array to store a chunk
//0-word count
//1-3 byte length of each word
//4-6 frequence of each word
//7-9 character count of each word
float dChunks[64][10]={{0}};
size_t iChunkCur=0;
size_t iChunkCount;
float dChunk_A[10]={0};
float dChunk_B[10]={0};
size_t iByteCount;
register size_t iByteCur;
size_t iChunkSize=sizeof(float)*10;
size_t dClip[64];//temporary cursor data when filtering
size_t dBest[64];//the best result. There may be more than 1 chunk at last, so we use array
register size_t iClipCur=0;
size_t iClipSize=0;
register size_t iBestCur=0;
size_t iResultSize = sizeof(int)*64;
float dLengths[64]={0}; //chunks' lengths
float dWordCounts[64]={0}; //for chunks' average lengths, but we use word count when filtering with this rule
float dVariances[64]={0}; //chunks' variances
float dSDMFs[64]={0}; //chunks' sum of degree of morphemic freedom of one-character words
float iMaxChunkLength=0;
float fMinWordCount;//used to filtering with max average length, which also means having the minimal word count;
float fMinVariance;
float fAvgLength;
int iTemp; //mostly for filtering with min variance
float fTemp; ////mostly for filtering with min variance
float fMaxSDMF=0;
pText_A=pText;
iTextLength_A=iTextLength;
//get all the chunks
iNum_A = da.commonPrefixSearch(pText_A, dResultPair_A, 64, iTextLength_A);
for(iCur_A=0;iCur_A<iNum_A;iCur_A++) {
dChunk_A[0] = 1;
dChunk_A[1] = dResultPair_A[iCur_A].length;
dChunk_A[4] = dResultPair_A[iCur_A].value;
//character count
iByteCount=0;
for(iByteCur=0;iByteCur<dChunk_A[1];iByteCur++) {
if(UTF8CharLenTable[(unsigned char)(*(pText_A+iByteCur))]<0x08) {
iByteCount++;
}
}
dChunk_A[7] = iByteCount;
pText_B = pText_A + dResultPair_A[iCur_A].length;
iTextLength_B = iTextLength_A - dResultPair_A[iCur_A].length;
iNum_B = da.commonPrefixSearch(pText_B, dResultPair_B, 64, iTextLength_B);
if(iNum_B) {
for(iCur_B=0;iCur_B<iNum_B;iCur_B++) {
memcpy(dChunk_B, dChunk_A, iChunkSize);//initialize chunk B
dChunk_B[0] = 2;
dChunk_B[2] = dResultPair_B[iCur_B].length;
dChunk_B[5] = dResultPair_B[iCur_B].value;
///character count
iByteCount=0;
for(iByteCur=0;iByteCur<dChunk_B[2];iByteCur++) {
if(UTF8CharLenTable[(unsigned char)(*(pText_B+iByteCur))]<0x08) {
iByteCount++;
}
}
dChunk_B[8] = iByteCount;
pText_C = pText_B + dResultPair_B[iCur_B].length;
iTextLength_C = iTextLength_B - dResultPair_B[iCur_B].length;
iNum_C = da.commonPrefixSearch(pText_C , dResultPair_C, 64, iTextLength_C);
if(iNum_C) {
for(iCur_C=0;iCur_C<iNum_C;iCur_C++) {
memcpy(dChunks[iChunkCur], dChunk_B, iChunkSize);
dChunks[iChunkCur][0] = 3;
dChunks[iChunkCur][3] = dResultPair_C[iCur_C].length;
dChunks[iChunkCur][6] = dResultPair_C[iCur_C].value;
//character count
iByteCount=0;
for(iByteCur=0;iByteCur<dChunks[iChunkCur][3];iByteCur++) {
if(UTF8CharLenTable[(unsigned char)(*(pText_C+iByteCur))]<0x08) {
iByteCount++;
}
}
dChunks[iChunkCur][9] = iByteCount;
iChunkCur++;
}
} else {
memcpy(dChunks[iChunkCur], dChunk_B, iChunkSize);
iChunkCur++;
}//if(iNum_C)
}
} else {
memcpy(dChunks[iChunkCur], dChunk_A, iChunkSize);
iChunkCur++;
}//if(iNum_B)
}//the main loop of obtaining chunks
iChunkCount=iChunkCur;//just remember the chunks count
//filter with max length;
for(iChunkCur=0;iChunkCur<iChunkCount;iChunkCur++) {
dLengths[iChunkCur] = dChunks[iChunkCur][7] + dChunks[iChunkCur][8] + dChunks[iChunkCur][9];
iMaxChunkLength = iMaxChunkLength > dLengths[iChunkCur] ? iMaxChunkLength : dLengths[iChunkCur];
}
for(iChunkCur=0;iChunkCur<iChunkCount;iChunkCur++) {
if(iMaxChunkLength == dLengths[iChunkCur]) {
dBest[iBestCur++]=iChunkCur;
}
}
if(iBestCur<2) {
return (int)dChunks[dBest[0]][1];
}
//filter with average word legnth
memcpy(dClip, dBest, iResultSize);
iClipSize=iBestCur;
//initialize the first one
dWordCounts[dClip[0]] = dChunks[dClip[0]][0];
fMinWordCount=dChunks[dClip[0]][0];
for(iClipCur=1;iClipCur<iClipSize;iClipCur++) {//notice that iClipCur starts from 1 (not 0)
dWordCounts[dClip[iClipCur]] = dChunks[dClip[iClipCur]][0];
fMinWordCount = fMinWordCount < dWordCounts[dClip[iClipCur]] ? fMinWordCount : dWordCounts[dClip[iClipCur]];
}
iBestCur=0;
for(iClipCur=0;iClipCur<iClipSize;iClipCur++) {
if(fMinWordCount == dWordCounts[dClip[iClipCur]]) {
dBest[iBestCur++]=dClip[iClipCur];
}
}
if(iBestCur<2) {
return (int)dChunks[dBest[0]][1];
}
//filter with min variance
memcpy(dClip, dBest, iResultSize);
iClipSize=iBestCur;
//initialize the first one
fAvgLength = (dChunks[dClip[0]][7]+dChunks[dClip[0]][8]+dChunks[dClip[0]][9])/dChunks[dClip[0]][0];
for(iTemp=0;iTemp<dChunks[dClip[0]][0];iTemp++) {
fTemp= fAvgLength - dChunks[dClip[0]][iTemp+7];
dVariances[dClip[0]] += fTemp*fTemp;
}
dVariances[dClip[0]] = sqrt(dVariances[dClip[0]]/dChunks[dClip[0]][0]);
fMinVariance = dVariances[dClip[0]];
for(iClipCur=1;iClipCur<iClipSize;iClipCur++) {//notice that iClipCur starts from 1, not 0
fAvgLength = (dChunks[dClip[iClipCur]][7]+dChunks[dClip[iClipCur]][8]+dChunks[dClip[iClipCur]][9])/dChunks[dClip[iClipCur]][0];
for(iTemp=0;iTemp<dChunks[dClip[iClipCur]][0];iTemp++) {
fTemp = fAvgLength - dChunks[dClip[iClipCur]][iTemp+7];
dVariances[dClip[iClipCur]] += fTemp*fTemp;
}
dVariances[dClip[iClipCur]] = sqrt(dVariances[dClip[iClipCur]]/dChunks[dClip[iClipCur]][0]);
fMinVariance = fMinVariance < dVariances[dClip[iClipCur]] ? fMinVariance : dVariances[dClip[iClipCur]];
}
iBestCur=0;
for(iClipCur=0;iClipCur<iClipSize;iClipCur++) {
if(fMinVariance == dVariances[dClip[iClipCur]]) {
dBest[iBestCur++]=dClip[iClipCur];
}
}
if(iBestCur<2) {
return (int)dChunks[dBest[0]][1];
}
//filter with max SDMF(sum of degree of morphemic freedom of one-character words)
memcpy(dClip, dBest, iResultSize);
iClipSize=iBestCur;
for(iClipCur=0;iClipCur<iClipSize;iClipCur++) {
for(iTemp=0;iTemp<dChunks[dClip[iClipCur]][0];iTemp++) {
if(dChunks[dClip[iClipCur]][iTemp+7]==1) {
dSDMFs[dClip[iClipCur]]+=log(dChunks[dClip[iClipCur]][iTemp+4]);
}
}
fMaxSDMF = fMaxSDMF > dSDMFs[dClip[iClipCur]] ? fMaxSDMF : dSDMFs[dClip[iClipCur]];
}
iBestCur=0;
for(iClipCur=0;iClipCur<iClipSize;iClipCur++) {
if(fMaxSDMF == dSDMFs[dClip[iClipCur]]) {
dBest[iBestCur++]=dClip[iClipCur];
}
}
//if(iBestCur<2) {
return (int)dChunks[dBest[0]][1];
//}
}
/* }}} */
/* {{{ compare function, used in hash sorting
*/
static int array_key_compare(const void *a, const void *b TSRMLS_DC) /* {{{ */
{
Bucket *f;
Bucket *s;
zval result;
zval first;
zval second;
f = *((Bucket **) a);
s = *((Bucket **) b);
if (f->nKeyLength == 0) {
Z_TYPE(first) = IS_LONG;
Z_LVAL(first) = f->h;
} else {
Z_TYPE(first) = IS_STRING;
Z_STRVAL(first) = f->arKey;
Z_STRLEN(first) = f->nKeyLength-1;
}
if (s->nKeyLength == 0) {
Z_TYPE(second) = IS_LONG;
Z_LVAL(second) = s->h;
} else {
Z_TYPE(second) = IS_STRING;
Z_STRVAL(second) = s->arKey;
Z_STRLEN(second) = s->nKeyLength-1;
}
if (compare_function(&result, &first, &second TSRMLS_CC) == FAILURE) {
//if (XSPLIT_G(compare_func)(&result, &first, &second TSRMLS_CC) == FAILURE) {
return 0;
}
if (Z_TYPE(result) == IS_DOUBLE) {
if (Z_DVAL(result) < 0) {
return -1;
} else if (Z_DVAL(result) > 0) {
return 1;
} else {
return 0;
}
}
convert_to_long(&result);
if (Z_LVAL(result) < 0) {
return -1;
} else if (Z_LVAL(result) > 0) {
return 1;
}
return 0;
}
/* }}} */
/* {{{ hash function for simhash
*/
/** Hashes the given token.
*/
static uint64_t
get_hashed_token( const char *token_start, size_t token_length)
{
uint32_t h1 = 0xac867c1d; /* Dummy init values */
uint32_t h2 = 0x5434e4c4;
hashlittle2( token_start, token_length, &h1, &h2);
return ((uint64_t)h1 << 32) +h2;
}
/* }}} */
/** Updates histogram with weight==1.
* Tricky implementation, optimized for speed.
*/
static inline void
update_hist( int hist[], uint64_t token)
{
#define HIST *hist++ += t & 1; t >>= 1;
uint32_t t = token;
HIST HIST HIST HIST HIST HIST HIST HIST
HIST HIST HIST HIST HIST HIST HIST HIST
HIST HIST HIST HIST HIST HIST HIST HIST
HIST HIST HIST HIST HIST HIST HIST
*hist++ += t & 1;
t = token>>32;
HIST HIST HIST HIST HIST HIST HIST HIST
HIST HIST HIST HIST HIST HIST HIST HIST
HIST HIST HIST HIST HIST HIST HIST HIST
HIST HIST HIST HIST HIST HIST HIST
*hist += t & 1;
}
/* {{{ PHP_INI
*/
PHP_INI_BEGIN()
STD_PHP_INI_BOOLEAN("xsplit.allow_persistent", "1", PHP_INI_SYSTEM, OnUpdateLong, allow_persistent, zend_xsplit_globals, xsplit_globals)
STD_PHP_INI_ENTRY("xsplit.max_persistent", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_persistent, zend_xsplit_globals, xsplit_globals)
STD_PHP_INI_ENTRY("xsplit.max_dicts", "-1", PHP_INI_SYSTEM, OnUpdateLong, max_dicts, zend_xsplit_globals, xsplit_globals)
PHP_INI_ENTRY("xsplit.default_dict_file", "xdcit", PHP_INI_ALL, NULL)
PHP_INI_END()
/* }}} */
/* {{{ php_xsplit_init_globals
*/
/* Uncomment this function if you have INI entries
static void php_xsplit_init_globals(zend_xsplit_globals *xsplit_globals)
{
xsplit_globals->global_value = 0;
xsplit_globals->global_string = NULL;
}
*/
/* }}} */
/* {{{ PHP_MINIT_FUNCTION
*/
PHP_MINIT_FUNCTION(xsplit)
{
REGISTER_INI_ENTRIES();
/* register resources */
le_xsplit_dict = zend_register_list_destructors_ex(_close_xsplit_dict, NULL, "xsplit dict", module_number);
le_xsplit_pdict = zend_register_list_destructors_ex(NULL, _close_xsplit_pdict, "xsplit dict persistent", module_number);
REGISTER_LONG_CONSTANT("XS_SPLIT_MMSEG", 1, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("XS_SPLIT_MMFWD", 2, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("XS_SEARCH_CP", 1, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("XS_SEARCH_EM", 2, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("XS_SEARCH_ALL_SIMPLE", 3, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("XS_SEARCH_ALL_DETAIL", 4, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("XS_SEARCH_ALL_INDICT", 5, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("XS_SEARCH_PREDICTIVE", 6, CONST_CS | CONST_PERSISTENT);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION
*/
PHP_MSHUTDOWN_FUNCTION(xsplit)
{
UNREGISTER_INI_ENTRIES();
return SUCCESS;
}
/* }}} */
/* Remove if there's nothing to do at request start */
/* {{{ PHP_RINIT_FUNCTION
*/
PHP_RINIT_FUNCTION(xsplit)
{
/* initialize default_dict */
XSPLIT_G(default_dict)=-1;
/* initialize the number of opend persistent dictionary */
XSPLIT_G(num_dicts) = XSPLIT_G(num_persistent);
return SUCCESS;
}
/* }}} */
/* Remove if there's nothing to do at request end */
/* {{{ PHP_RSHUTDOWN_FUNCTION
*/
PHP_RSHUTDOWN_FUNCTION(xsplit)
{
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(xsplit)
{
php_info_print_table_start();
php_info_print_table_row(2, "XSplit Support", "enabled");
php_info_print_table_row(2, "Version", "0.0.8 Beta");
php_info_print_table_row(2, "Build", "20101102SZG");
php_info_print_table_end();
php_info_print_table_start();
php_info_print_table_row(2, "Warning", "This release is still in BETA phase and you are using it at your own risk!");
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
/* }}} */
/* {{{
*/
PHP_FUNCTION(xs_open)
{
char *dict_file;
size_t dict_file_len;
zend_bool persistent=1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b",
&dict_file, &dict_file_len, &persistent) == FAILURE) {
RETURN_FALSE;
}
_open_xsplit_dict(INTERNAL_FUNCTION_PARAM_PASSTHRU, dict_file, dict_file_len, persistent);
}
/* }}} */
/* {{{
*/
PHP_FUNCTION(xs_build)
{
zval *array;
char *dict;
int dict_len;
HashTable *arrht;
char *key;
uint keylen;
ulong idx;
int type;
zval **ppzval;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a/s", &array, &dict, &dict_len) == FAILURE) {
RETURN_FALSE;
}
arrht = HASH_OF(array);
if (zend_hash_sort(arrht, zend_qsort, array_key_compare, 0 TSRMLS_CC) == FAILURE) {
RETURN_FALSE;
}
std::vector<const char *> dkey;
std::vector<Darts::DoubleArray::value_type > dvalue;
//Darts::DoubleArray::value_type tdvalue;
for(zend_hash_internal_pointer_reset(arrht); zend_hash_has_more_elements(arrht) == SUCCESS; zend_hash_move_forward(arrht)) {
type = zend_hash_get_current_key_ex(arrht, &key, &keylen, &idx, 0, NULL);
if (zend_hash_get_current_data(arrht, (void**)&ppzval) == FAILURE) {
/* Should never actually fail
* since the key is known to exist. */
continue;
}
convert_to_string_ex(ppzval);
/* Output */
if (type == HASH_KEY_IS_STRING) {
/* String Key / Associative */
char *tmp = new char[keylen+1];
strcpy(tmp, key);
dkey.push_back(tmp);
//dkey.push_back(key);
dvalue.push_back(atoi(Z_STRVAL_PP(ppzval)));
} else {
/* Numeric Key */
}
}
if (da.build(dkey.size(), &dkey[0], 0, &dvalue[0]) != 0
|| da.save(dict) != 0) {
da.clear();
RETURN_FALSE;
}
for (unsigned int i = 0; i < dkey.size(); i++)
delete [] dkey[i];
da.clear();
RETURN_TRUE;
}
/* }}} */
/* {{{
*/
PHP_FUNCTION(xs_split)
{
Darts::DoubleArray::key_type *text;
Darts::DoubleArray::result_pair_type result_pair[SIZE_OF_RESULT_PAIR];
int split_method=1;
int i,ii;
int text_len;
int num;
zval *dict_rsrc;
_dict *dict_ptr;
long dict_id=-1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|lr",
&text, &text_len, &split_method, &dict_rsrc) == FAILURE) {
RETURN_FALSE;
}
if(ZEND_NUM_ARGS()==3) {
ZEND_FETCH_RESOURCE2(dict_ptr, _dict *, &dict_rsrc, -1, "XSplit-Dict", le_xsplit_dict, le_xsplit_pdict);
} else {
dict_id = _get_default_dict(INTERNAL_FUNCTION_PARAM_PASSTHRU);
CHECK_DICT(dict_id);
ZEND_FETCH_RESOURCE2(dict_ptr, _dict *, NULL, dict_id, "XSplit-Dict", le_xsplit_dict, le_xsplit_pdict);
}
da.set_array((void *)dict_ptr->mmapped_addr);
array_init(return_value);
i=0;
switch(split_method) {
case 2:
while(i<text_len){
num = da.commonPrefixSearch((text+i), result_pair, SIZE_OF_RESULT_PAIR, text_len-i);
if( num == 0) {
add_next_index_stringl(return_value, (text+i) , UTF8CharLenTable[(unsigned char)(*(text+i))], 1);
i+=UTF8CharLenTable[(unsigned char)(*(text+i))];
} else {
add_next_index_stringl(return_value, (text+i) , result_pair[num-1].length, 1);
i+=result_pair[num-1].length;
}
}
break;
default:
while(i<text_len){
num = da.commonPrefixSearch((text+i), result_pair, SIZE_OF_RESULT_PAIR, text_len-i);
if( num == 0) {
ii=UTF8CharLenTable[(unsigned char)(*(text+i))];
if(ii==1&& ( (*(text+i)>='a'&&*(text+i)<='z') ||(*(text+i)>='A'&&*(text+i)<='Z') || (*(text+i)>='0'&&*(text+i)<='9') || *(text+i)=='_' ) ) {
while(0==da.commonPrefixSearch((text+i+ii), result_pair, SIZE_OF_RESULT_PAIR, text_len-i-ii) && (1==UTF8CharLenTable[(unsigned char)(*(text+i+ii))]) && ( (*(text+i+ii)>='a'&&*(text+i+ii)<='z') ||(*(text+i+ii)>='A'&&*(text+i+ii)<='Z') || (*(text+i+ii)>='0'&&*(text+i+ii)<='9') || *(text+i+ii)=='_' ) && (i+ii)<text_len ) {
++ii;
}
}
add_next_index_stringl(return_value, (text+i) , ii, 1);
i+=ii;
} else if(num==1) {
add_next_index_stringl(return_value, (text+i) , result_pair[num-1].length, 1);
i+=result_pair[num-1].length;
} else if(num > 1) {
int temp=getBestWordLength((text+i), (text_len-i));
add_next_index_stringl(return_value, (text+i) , temp, 1);
i+=temp;
}
}
break;
}
}
/* }}} */
/* {{{
*/
PHP_FUNCTION(xs_search)
{
Darts::DoubleArray::key_type *text;
Darts::DoubleArray::result_pair_type result_pair[SIZE_OF_RESULT_PAIR];
Darts::DoubleArray::result_pair_type single_result_pair;
int search_method=1;
int i,ii;
int text_len;
int num=0,founds=0;
zval *result_item;
zval *dict_rsrc;
_dict *dict_ptr;
long dict_id=-1;
HashTable *arrht;
ulong hashval;
zval **origval;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|lr",
&text, &text_len, &search_method, &dict_rsrc) == FAILURE) {
RETURN_FALSE;
}
if(ZEND_NUM_ARGS()==3) {
//we use passed dict_rarc
ZEND_FETCH_RESOURCE2(dict_ptr, _dict *, &dict_rsrc, -1, "XSplit-Dict", le_xsplit_dict, le_xsplit_pdict);
} else {
//we use default dict id
dict_id = _get_default_dict(INTERNAL_FUNCTION_PARAM_PASSTHRU);
CHECK_DICT(dict_id);
ZEND_FETCH_RESOURCE2(dict_ptr, _dict *, NULL, dict_id, "XSplit-Dict", le_xsplit_dict, le_xsplit_pdict);
}
da.set_array((void *)dict_ptr->mmapped_addr);
i=0;
switch(search_method) {
case 2:
da.exactMatchSearch(text, single_result_pair);
if(single_result_pair.length==0 && single_result_pair.value==-1) {
/* not found*/
RETVAL_FALSE;
} else {
array_init(return_value);
add_next_index_long(return_value, single_result_pair.value);
add_next_index_long(return_value, single_result_pair.length);
}
break;
case 3: