src/utils/StringTokenizer.cpp

/*
 * Copyright (C) 2000-2004  Object Oriented Parallel Simulation Engine (OOPSE) project
 * 
 * Contact: oopse@oopse.org
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 * All we ask is that proper credit is given for our work, which includes
 * - but is not limited to - adding the above copyright notice to the beginning
 * of your source code files, and to any copyright notice that you may distribute
 * with programs based on this work.
 * 
 * This program 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#include <iostream>
#include <iterator>
#include <sstream>
#include "utils/StringTokenizer.hpp"

namespace oopse {


StringTokenizer::StringTokenizer(const std::string & str, const std::string & delim) 
                        : tokenString_(str), delim_(delim), returnTokens_(false),
                          currentPos_(tokenString_.begin()), end_(tokenString_.end()){

}

StringTokenizer::StringTokenizer(std::string::const_iterator& first, std::string::const_iterator& last,
                                                               const std::string & delim)  
                        : tokenString_(first, last) , delim_(delim), returnTokens_(false),
                           currentPos_(tokenString_.begin()), end_(tokenString_.end()) {

}

StringTokenizer::StringTokenizer(const std::string&str, const std::string&delim,
                                                                bool returnTokens)
                        : tokenString_(str), delim_(delim), returnTokens_(returnTokens),
                          currentPos_(tokenString_.begin()), end_(tokenString_.end()) {

}

bool StringTokenizer::isDelimiter(const char c) {
    return delim_.find(c) == std::string::npos ? false : true;
}

int StringTokenizer::countTokens() {
    
    std::string::const_iterator tmpIter = currentPos_;    
    int numToken = 0;

    while (true) {

        //skip delimiter first
        while( tmpIter != end_ && isDelimiter(*tmpIter)) {
            ++tmpIter;

            if (returnTokens_) {
                //if delimiter is consider as token
                ++numToken;
            }
        }
        
        if (tmpIter == end_) {
            break;
        }
        
        //encount a token here
        while ( tmpIter != end_ && !isDelimiter(*tmpIter) ) {
            ++tmpIter;
        }

        ++numToken;

    }

    return numToken;
}

bool StringTokenizer::hasMoreTokens() {
    
    if (currentPos_ == end_) {
        return false;
    } else if (returnTokens_) {
        return true;
    } else {
        std::string::const_iterator i = currentPos_;

        //walk through the remaining string to check whether it contains non-delimeter or not
        while(i != end_ && isDelimiter(*i)) {
            ++i;
        }

         return i != end_ ? true : false;
    }
}

std::string StringTokenizer::nextToken() {
    std::string result;
    
    if(currentPos_ != end_) {
        std::insert_iterator<std::string> insertIter(result, result.begin());

        while( currentPos_ != end_ && isDelimiter(*currentPos_)) {

            if (returnTokens_) {
                *insertIter++ = *currentPos_++;
                return result;
            }
            
            ++currentPos_;
        }

        while (currentPos_ != end_ && !isDelimiter(*currentPos_)) {
            *insertIter++ = *currentPos_++;
        }
        
    }
    
    return result;
}

bool StringTokenizer::nextTokenAsBool() {
    std::string token = nextToken();
    std::istringstream iss(token);
    bool result;
    
    if (iss >> result) {
        return result;
    } else {
        std::cerr << "unable to convert " << token << "to a bool" << std::endl;
        return false;
    }
}

int StringTokenizer::nextTokenAsInt() {
    std::string token = nextToken();
    std::istringstream iss(token);
    int result;
    
    if (iss >> result) {
        return result;
    } else {
        std::cerr << "unable to convert " << token << "to an integer" << std::endl;
        return 0;
    }
}

float StringTokenizer::nextTokenAsFloat() {
    std::string token = nextToken();
    std::istringstream iss(token);
    float result;
    
    if (iss >> result) {
        return result;
    } else {
        std::cerr << "unable to convert " << token << "to a float" << std::endl;
        return 0.0;
    }
}

double StringTokenizer::nextTokenAsDouble() {
    std::string token = nextToken();
    std::istringstream iss(token);
    double result;
    
    if (iss >> result) {
        return result;
    } else {
        std::cerr << "unable to convert " << token << "to a double" << std::endl;
        return 0.0;
    }
}

std::string  StringTokenizer::peekNextToken() {
    std::string result;
    std::string::const_iterator tmpIter = currentPos_;
    
    if(tmpIter != end_) {
        std::insert_iterator<std::string> insertIter(result, result.begin());

        while(tmpIter != end_ && isDelimiter(*tmpIter)) {

            if (returnTokens_) {
                *insertIter++ = *tmpIter++;
                return result;
            }
            
            ++tmpIter;
        }

        while (tmpIter != end_ && !isDelimiter(*tmpIter)) {
            *insertIter++ = *tmpIter++;
        }
    }
    
    return result;    
}

}//end namespace oopse

Revision:	1854
Committed:	Sun Dec 5 22:02:42 2004 UTC (20 years, 10 months ago) by tim
File size:	5916 byte(s)
Log Message:	fix a bug in filling MolMembership
#	User	Rev	Content
1	tim	1736	/*
2			* Copyright (C) 2000-2004 Object Oriented Parallel Simulation Engine (OOPSE) project
3			*
4			* Contact: oopse@oopse.org
5			*
6			* This program is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public License
8			* as published by the Free Software Foundation; either version 2.1
9			* of the License, or (at your option) any later version.
10			* All we ask is that proper credit is given for our work, which includes
11			* - but is not limited to - adding the above copyright notice to the beginning
12			* of your source code files, and to any copyright notice that you may distribute
13			* with programs based on this work.
14			*
15			* This program is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			* GNU Lesser General Public License for more details.
19			*
20			* You should have received a copy of the GNU Lesser General Public License
21			* along with this program; if not, write to the Free Software
22			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23			*
24			*/
25
26	tim	1780	#include <iostream>
27	tim	1854	#include <iterator>
28	tim	1780	#include <sstream>
29	tim	1736	#include "utils/StringTokenizer.hpp"
30
31			namespace oopse {
32
33
34			StringTokenizer::StringTokenizer(const std::string & str, const std::string & delim)
35			: tokenString_(str), delim_(delim), returnTokens_(false),
36			currentPos_(tokenString_.begin()), end_(tokenString_.end()){
37
38			}
39
40			StringTokenizer::StringTokenizer(std::string::const_iterator& first, std::string::const_iterator& last,
41			const std::string & delim)
42	tim	1780	: tokenString_(first, last) , delim_(delim), returnTokens_(false),
43	tim	1736	currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
44
45			}
46
47			StringTokenizer::StringTokenizer(const std::string&str, const std::string&delim,
48			bool returnTokens)
49			: tokenString_(str), delim_(delim), returnTokens_(returnTokens),
50			currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
51
52			}
53
54	tim	1780	bool StringTokenizer::isDelimiter(const char c) {
55			return delim_.find(c) == std::string::npos ? false : true;
56			}
57
58	tim	1736	int StringTokenizer::countTokens() {
59
60	tim	1780	std::string::const_iterator tmpIter = currentPos_;
61	tim	1736	int numToken = 0;
62
63			while (true) {
64
65			//skip delimiter first
66			while( tmpIter != end_ && isDelimiter(*tmpIter)) {
67			++tmpIter;
68
69			if (returnTokens_) {
70			//if delimiter is consider as token
71			++numToken;
72			}
73			}
74	tim	1840
75			if (tmpIter == end_) {
76			break;
77			}
78
79	tim	1736	//encount a token here
80			while ( tmpIter != end_ && !isDelimiter(*tmpIter) ) {
81			++tmpIter;
82			}
83
84	tim	1840	++numToken;
85	tim	1736
86			}
87
88			return numToken;
89			}
90
91			bool StringTokenizer::hasMoreTokens() {
92	tim	1737
93			if (currentPos_ == end_) {
94			return false;
95			} else if (returnTokens_) {
96			return true;
97			} else {
98	tim	1780	std::string::const_iterator i = currentPos_;
99	tim	1736
100	tim	1737	//walk through the remaining string to check whether it contains non-delimeter or not
101			while(i != end_ && isDelimiter(*i)) {
102			++i;
103			}
104
105			return i != end_ ? true : false;
106			}
107	tim	1736	}
108
109			std::string StringTokenizer::nextToken() {
110	tim	1741	std::string result;
111	tim	1736
112			if(currentPos_ != end_) {
113	tim	1780	std::insert_iterator<std::string> insertIter(result, result.begin());
114	tim	1736
115			while( currentPos_ != end_ && isDelimiter(*currentPos_)) {
116
117			if (returnTokens_) {
118			insertIter++ = currentPos_++;
119			return result;
120			}
121
122			++currentPos_;
123			}
124
125			while (currentPos_ != end_ && !isDelimiter(*currentPos_)) {
126			insertIter++ = currentPos_++;
127			}
128
129			}
130
131			return result;
132			}
133
134	tim	1758	bool StringTokenizer::nextTokenAsBool() {
135			std::string token = nextToken();
136			std::istringstream iss(token);
137			bool result;
138
139			if (iss >> result) {
140			return result;
141			} else {
142	tim	1780	std::cerr << "unable to convert " << token << "to a bool" << std::endl;
143	tim	1758	return false;
144			}
145			}
146
147	tim	1736	int StringTokenizer::nextTokenAsInt() {
148	tim	1741	std::string token = nextToken();
149			std::istringstream iss(token);
150			int result;
151
152			if (iss >> result) {
153			return result;
154			} else {
155	tim	1780	std::cerr << "unable to convert " << token << "to an integer" << std::endl;
156	tim	1741	return 0;
157			}
158	tim	1736	}
159
160			float StringTokenizer::nextTokenAsFloat() {
161	tim	1741	std::string token = nextToken();
162			std::istringstream iss(token);
163			float result;
164
165			if (iss >> result) {
166			return result;
167			} else {
168	tim	1780	std::cerr << "unable to convert " << token << "to a float" << std::endl;
169	tim	1741	return 0.0;
170			}
171	tim	1736	}
172
173	tim	1741	double StringTokenizer::nextTokenAsDouble() {
174			std::string token = nextToken();
175			std::istringstream iss(token);
176			double result;
177
178			if (iss >> result) {
179			return result;
180			} else {
181	tim	1780	std::cerr << "unable to convert " << token << "to a double" << std::endl;
182	tim	1741	return 0.0;
183			}
184			}
185
186	tim	1736	std::string StringTokenizer::peekNextToken() {
187	tim	1780	std::string result;
188	tim	1736	std::string::const_iterator tmpIter = currentPos_;
189
190			if(tmpIter != end_) {
191	tim	1780	std::insert_iterator<std::string> insertIter(result, result.begin());
192	tim	1736
193			while(tmpIter != end_ && isDelimiter(*tmpIter)) {
194
195			if (returnTokens_) {
196			insertIter++ = tmpIter++;
197			return result;
198			}
199
200			++tmpIter;
201			}
202
203			while (tmpIter != end_ && !isDelimiter(*tmpIter)) {
204			insertIter++ = tmpIter++;
205			}
206			}
207
208			return result;
209			}
210
211	tim	1780	}//end namespace oopse
212	tim	1736