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lucene_bindings.cpp
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lucene_bindings.cpp
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#include <iostream>
#include <v8.h>
#include <node.h>
//Thanks bnoordhuis and jerrysv from #node.js
#include <sstream>
#include <CLucene.h>
#include "Misc.h"
#include "repl_tchar.h"
#include "StringBuffer.h"
using namespace node;
using namespace v8;
using namespace std;
using namespace lucene::index;
using namespace lucene::analysis;
using namespace lucene::util;
using namespace lucene::store;
using namespace lucene::document;
using namespace lucene::search;
using namespace lucene::queryParser;
const static int CL_MAX_DIR = 220;
void SearchFilesC(const char* index, const char* fobizzle){
standard::StandardAnalyzer analyzer;
char line[80];
TCHAR tline[80];
TCHAR* buf;
IndexReader* reader = IndexReader::open(index);
//printf("Enter query string: ");
strncpy(line,fobizzle,80);
//line[strlen(line)-1]=0;
IndexReader* newreader = reader->reopen();
if ( newreader != reader ){
_CLLDELETE(reader);
reader = newreader;
}
IndexSearcher s(reader);
STRCPY_AtoT(tline,line,80);
Query* q = QueryParser::parse(tline,_T("contents"),&analyzer);
buf = q->toString(_T("contents"));
_tprintf(_T("Searching for: %S\n\n"), buf);
_CLDELETE_LCARRAY(buf);
uint64_t str = Misc::currentTimeMillis();
Hits* h = s.search(q);
uint32_t srch = (int32_t)(Misc::currentTimeMillis() - str);
str = Misc::currentTimeMillis();
//SearchData search[h->length()];
for ( size_t i=0; i < h->length(); i++ ){
Document* doc = &h->doc(i);
//const TCHAR* buf = doc.get(_T("contents"));
_tprintf(_T("%d. %S - %f\n"), i, doc->get(_T("path")), h->score(i));
//search[i].set_path(doc->get(_T("path")));
}
printf("\n\nSearch took: %d ms.\n", srch);
printf("Screen dump took: %d ms.\n\n", (int32_t)(Misc::currentTimeMillis() - str));
_CLLDELETE(h);
_CLLDELETE(q);
s.close();
reader->close();
_CLLDELETE(reader);
};
void FileDocument(const char* f, Document* doc){
TCHAR tf[CL_MAX_DIR];
STRCPY_AtoT(tf,f,CL_MAX_DIR);
doc->add( *_CLNEW Field(_T("path"), tf, Field::STORE_YES | Field::INDEX_UNTOKENIZED ) );
FILE* fh = fopen(f,"r");
if ( fh != NULL ){
StringBuffer str;
char abuf[1024];
TCHAR tbuf[1024];
size_t r;
do{
r = fread(abuf,1,1023,fh);
abuf[r]=0;
STRCPY_AtoT(tbuf,abuf,r);
tbuf[r]=0;
str.append(tbuf);
}while(r>0);
fclose(fh);
doc->add( *_CLNEW Field(_T("contents"), str.getBuffer(), Field::STORE_YES | Field::INDEX_TOKENIZED) );
}
}
void indexDocs(IndexWriter* writer, const char* directory) {
vector<string> files;
std::sort(files.begin(),files.end());
Misc::listFiles(directory,files,true);
vector<string>::iterator itr = files.begin();
// Re-use the document object
Document doc;
int i=0;
while ( itr != files.end() ){
const char* path = itr->c_str();
printf( "adding file %d: %s\n", ++i, path );
doc.clear();
FileDocument( path, &doc );
writer->addDocument( &doc );
++itr;
}
};
class Lucene : public ObjectWrap
{
static Persistent<FunctionTemplate> s_ct;
private:
vector<String> strings;
int m_count;
public:
static void Init(Handle<Object> target)
{
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(New);
s_ct = Persistent<FunctionTemplate>::New(t);
s_ct->InstanceTemplate()->SetInternalFieldCount(1);
s_ct->SetClassName(String::NewSymbol("Lucene"));
NODE_SET_PROTOTYPE_METHOD(s_ct, "hello", Hello);
NODE_SET_PROTOTYPE_METHOD(s_ct, "index", IndexFiles);
NODE_SET_PROTOTYPE_METHOD(s_ct, "search", SearchFiles);
target->Set(String::NewSymbol("Lucene"),
s_ct->GetFunction());
}
Lucene() :
m_count(0)
{
}
~Lucene()
{
}
static Handle<Value> New(const Arguments& args)
{
HandleScope scope;
Lucene* hw = new Lucene();
hw->Wrap(args.This());
return args.This();
}
static Handle<Value> Hello(const Arguments& args)
{
HandleScope scope;
Lucene* hw = ObjectWrap::Unwrap<Lucene>(args.This());
hw->m_count++;
Local<String> result = String::New("Hello World");
return scope.Close(result);
}
static Handle<Value> IndexFiles(const Arguments& args)
{
HandleScope scope;
IndexWriter* writer = NULL;
lucene::analysis::WhitespaceAnalyzer an;
if (IndexReader::indexExists(*String::Utf8Value(args[1])) ){
if ( IndexReader::isLocked(*String::Utf8Value(args[1])) ){
printf("Index was locked... unlocking it.\n");
IndexReader::unlock(*String::Utf8Value(args[1]));
}
writer = _CLNEW IndexWriter( *String::Utf8Value(args[1]), &an, false);
}else{
writer = _CLNEW IndexWriter( *String::Utf8Value(args[1]) ,&an, true);
}
//writer->setInfoStream(&std::cout);
// We can tell the writer to flush at certain occasions
//writer->setRAMBufferSizeMB(0.5);
//writer->setMaxBufferedDocs(3);
// To bypass a possible exception (we have no idea what we will be indexing...)
writer->setMaxFieldLength(0x7FFFFFFFL); // LUCENE_INT32_MAX_SHOULDBE
// Turn this off to make indexing faster; we'll turn it on later before optimizing
writer->setUseCompoundFile(false);
uint64_t str = Misc::currentTimeMillis();
indexDocs(writer, *String::Utf8Value(args[0]));
// Make the index use as little files as possible, and optimize it
writer->setUseCompoundFile(true);
writer->optimize();
// Close and clean up
writer->close();
_CLLDELETE(writer);
printf("Indexing took: %d ms.\n\n", (int32_t)(Misc::currentTimeMillis() - str));IndexWriter(*String::Utf8Value(args[1]), &an, false);
Lucene* hw = ObjectWrap::Unwrap<Lucene>(args.This());
return scope.Close(String::New("foo"));
}
static Handle<Value> SearchFiles(const Arguments& args)
{
HandleScope scope;
Lucene* lucene = ObjectWrap::Unwrap<Lucene>(args.This());
lucene->strings.insert("foo");
SearchFilesC(*String::Utf8Value(args[0]), *String::Utf8Value(args[1]));
return Undefined();
}
};
Persistent<FunctionTemplate> Lucene::s_ct;
extern "C" {
static void init (Handle<Object> target)
{
Lucene::Init(target);
}
NODE_MODULE(lucene_bindings, init);
}