SentIdSet lookup_phrase(const std::string & phrase, C_SuffixArraySearchApplicationBase & my_sa)
{
SentIdSet occur_set;
vector<S_SimplePhraseLocationElement> locations;
locations = my_sa.locateExactPhraseInCorpus(phrase.c_str());
if(locations.size()==0) {
cerr<<"No occurrences found!!\n";
}
for (vector<S_SimplePhraseLocationElement>::iterator i=locations.begin(); i != locations.end(); ++i) {
occur_set.push_back(i->sentIdInCorpus);
}
std::sort(occur_set.begin(), occur_set.end());
SentIdSet::iterator it = std::unique(occur_set.begin(), occur_set.end());
occur_set.resize(it - occur_set.begin());
return occur_set;
}
/**
* \ingroup search
*
* Locate an n-gram in the indexed corpus, return its locations as <sentId, offsetInSent> pairs
* SentID and offset are all 1-based
*
* Note:
* The offset of the n-gram in a sentence is represented as "char" in the returned structure S_SimplePhraseLocationElement
* To output it as a number, one needs to cast it to integer type for proper display
*
*
* Revision $Rev: 3794 $
* Last Modified $LastChangedDate: 2007-06-29 02:17:32 -0400 (Fri, 29 Jun 2007) $
**/
int main(int argc, char * argv[]){
//-----------------------------------------------------------------------------
//check parameter
if(argc<2){
fprintf(stderr,"\nOutput all the locations of an n-gram in an indexed corpus\n");
fprintf(stderr,"\nUsage:\n");
fprintf(stderr,"\n%s corpusFileNameStem < list of n-grams\n\n",argv[0]);
exit(-1);
}
//-----------------------------------------------------------------------------
C_SuffixArraySearchApplicationBase saObj;
//load the indexed corpus with vocabulary(noVoc=false) and with offset(noOffset=false)
saObj.loadData_forSearch(argv[1], false, false);
cerr<<"Input N-grams:\n";
char tmpString[10000];
while(!cin.eof()){
cin.getline(tmpString,10000,'\n');
if(strlen(tmpString)>0){
vector<S_SimplePhraseLocationElement> locations;
locations = saObj.locateExactPhraseInCorpus(tmpString);
if(locations.size()==0){
cout<<"No occurrences found.\n";
}
else{
for(int i=0;i<locations.size(); i++){
cout<<"SentId="<<locations[i].sentIdInCorpus<<" Pos="<<(int)locations[i].posInSentInCorpus<<endl;
}
}
cout<<endl;
}
}
return 0;
}