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enumSubstring.cpp
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140 lines (122 loc) · 2.95 KB
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#include <iostream>
#include <string>
#include <vector>
#include <map>
#include "cmdline.h"
#include "esa.hxx"
using namespace std;
int readFile(const char* fn, vector<int>& T){
FILE* fp = fopen(fn, "rb");
if (fp == NULL){
cerr << "cannot open " << fn << endl;
return -1;
}
if (fseek(fp, 0, SEEK_END) != 0){
cerr << "cannot fseek " << fn << endl;
fclose(fp);
return -1;
}
int n = ftell(fp);
rewind(fp);
if (n < 0){
cerr << "cannot ftell " << fn << endl;
fclose(fp);
return -1;
}
T.resize(n);
if (fread(&T[0], sizeof(unsigned char), (size_t)n, fp) != (size_t) n){
cerr << "fread error " << fn << endl;
fclose(fp);
return -1;
}
fclose(fp);
return 0;
}
int getID(const string& str, map<string, int>& word2id){
map<string, int>::const_iterator it = word2id.find(str);
if (it == word2id.end()){
int newID = (int)word2id.size();
word2id[str] = newID;
return newID;
} else {
return it->second;
}
}
void printSnipet(const vector<int>& T, const int beg, const int len, const vector<string>& id2word){
for (int i = 0; i < len; ++i){
int c = T[beg + i];
if (id2word.size() > 0){
cout << id2word[c] << " ";
} else {
cout << (isspace((char)c) ? '_' : (char)c);
}
}
}
int main(int argc, char* argv[]){
cmdline::parser p;
p.add("word", 'w', "word type");
if (!p.parse(argc, argv)){
cerr << p.error() << endl
<< p.usage() << endl;
return -1;
}
if (p.rest().size() > 0){
cerr << p.usage() << endl;
return -1;
}
vector<int> T;
bool isWord = p.exist("word");
map<string, int> word2id;
istreambuf_iterator<char> isit(cin);
istreambuf_iterator<char> end;
size_t origLen = 0;
if (isWord){
string word;
while (isit != end){
char c = *isit++;
if (!isspace(c)){
word += c;
} else if (word.size() > 0){
T.push_back(getID(word, word2id));
word = "";
}
++origLen;
}
if (word.size() > 0){
T.push_back(getID(word, word2id));
}
} else {
while (isit != end){
T.push_back((unsigned char)(*isit++));
}
origLen = T.size();
}
vector<string> id2word(word2id.size());
for (map<string, int>::const_iterator it = word2id.begin();
it != word2id.end(); ++it){
id2word[it->second] = it->first;
}
vector<int> SA(T.size());
vector<int> L (T.size());
vector<int> R (T.size());
vector<int> D (T.size());
int k = (isWord) ? (int)id2word.size() : 0x100;
if (isWord){
cerr << "origN:" << origLen << endl;
}
cerr << " n:" << T.size() << endl;
cerr << "alpha:" << k << endl;
int nodeNum = 0;
if (esaxx(T.begin(), SA.begin(),
L.begin(), R.begin(), D.begin(),
(int)T.size(), k, nodeNum) == -1){
return -1;
}
cerr << " node:" << nodeNum << endl;
for (int i = 0; i < nodeNum; ++i){
cout << i << "\t" << R[i] - L[i] << "\t" << D[i] << "\t";
printSnipet(T, SA[L[i]], D[i], id2word);
cout << endl;
}
return 0;
}