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/*
* This file is part of din.
*
* din is copyright (c) 2006 - 2012 S Jagannathan <jag@dinisnoise.org>
* For more information, please visit http://dinisnoise.org
*
* din is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* din is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with din. If not, see <http://www.gnu.org/licenses/>.
*
*/
// string tokenizer
// based on initial code by Song Ho Ahn (song.ahn@gmail.com)
#include "tokenizer.h"
#include <cstdlib>
#include <iostream>
using namespace std;
tokenizer::tokenizer() {
str ("");
del (DEFAULT_DELIMITER);
}
tokenizer::tokenizer(const std::string& s, const std::string& d) {
str (s);
del (d);
}
tokenizer::tokenizer (const std::vector<std::string>& t) {
vec (t);
}
void tokenizer::set (const std::string& s, const std::string& d) {
str (s);
del (d);
}
void tokenizer::str (const std::string& s) {
buffer = s;
blen = buffer.length ();
init_cur ();
tokens_available = 0;
}
void tokenizer::del (const std::string& d) {
delimiter = d;
dlen = delimiter.length ();
}
void tokenizer::vec (const std::vector<std::string>& t) {
tokens = t;
tokens_available = 1;
tokid = 0;
}
void tokenizer::init_cur () {
if (blen) cur = 0; else cur = -1;
}
tokenizer& tokenizer::operator>> (std::string& s) {
if (tokens_available) {
if (tokid < tokens.size()) s = tokens[tokid++]; else {
s = "";
cur = blen;
}
} else {
token = "";
if (blen < 1) {
s = token;
} else {
skip_ws ();
while ((cur < blen) && !isdelim (buffer[cur])) {
token += buffer[cur];
++cur;
}
s = token;
}
}
return *this;
}
tokenizer& tokenizer::operator>> (float& f) {
string s; *this >> s;
f = atof (s.c_str());
return *this;
}
tokenizer& tokenizer::operator>> (int& i) {
string s; *this >> s;
i = atoi (s.c_str());
return *this;
}
tokenizer& tokenizer::operator>> (char& c) {
string s; *this >> s;
if (s.length()) c = s[0];
return *this;
}
void tokenizer::skip_ws () {
while (cur < blen) if (!isdelim (buffer[cur])) break; else ++cur;
}
bool tokenizer::isdelim (char c) {
for (int i = 0; i < dlen; ++i) {
if (delimiter[i] == c) return true;
}
return false;
}
string tokenizer::cur2end () {
if (tokens_available) {
string result;
static const char spc = ' ';
for (int i = tokid, j = tokens.size(); i < j; ++i) result = result + tokens[i] + spc;
return result;
} else {
if (cur > -1) {
return buffer.substr (cur, blen - 1);
} else return "";
}
}
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