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 "utils/StringTokenizer.hpp"

namespace oopse {

StringTokenizer::defaultDelim = " \t\n\r";

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()) {

}

int StringTokenizer::countTokens() {
    
    std::string::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;
            }
        }

        //encount a token here
        while ( tmpIter != end_ && !isDelimiter(*tmpIter) ) {
            ++tmpIter;
        }

         if (tmpIter != end_) {
            ++numToken;
        } else {
            break;
        }

    }

    return numToken;
}

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

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

std::string  StringTokenizer::peekNextToken() {
    string result;
    std::string::const_iterator tmpIter = currentPos_;
    
    if(tmpIter != end_) {
        std::insert_iterator<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;    
}

}

}
Revision:	1741
Committed:	Tue Nov 16 02:07:14 2004 UTC (19 years, 9 months ago) by tim
File size:	5433 byte(s)
Log Message:	adding DUFF class; adding checking statement to nextTokenAsInt and nextTokenAsFloat in StringTokenizer
#	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			#include "utils/StringTokenizer.hpp"
27
28			namespace oopse {
29
30			StringTokenizer::defaultDelim = " \t\n\r";
31
32			StringTokenizer::StringTokenizer(const std::string & str, const std::string & delim)
33			: tokenString_(str), delim_(delim), returnTokens_(false),
34			currentPos_(tokenString_.begin()), end_(tokenString_.end()){
35
36			}
37
38			StringTokenizer::StringTokenizer(std::string::const_iterator& first, std::string::const_iterator& last,
39			const std::string & delim)
40			: (tokenString_(first, last) , delim_(delim), returnTokens_(false),
41			currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
42
43			}
44
45			StringTokenizer::StringTokenizer(const std::string&str, const std::string&delim,
46			bool returnTokens)
47			: tokenString_(str), delim_(delim), returnTokens_(returnTokens),
48			currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
49
50			}
51
52			int StringTokenizer::countTokens() {
53
54			std::string::iterator tmpIter = currentPos_;
55			int numToken = 0;
56
57			while (true) {
58
59			//skip delimiter first
60			while( tmpIter != end_ && isDelimiter(*tmpIter)) {
61			++tmpIter;
62
63			if (returnTokens_) {
64			//if delimiter is consider as token
65			++numToken;
66			}
67			}
68
69			//encount a token here
70			while ( tmpIter != end_ && !isDelimiter(*tmpIter) ) {
71			++tmpIter;
72			}
73
74			if (tmpIter != end_) {
75			++numToken;
76			} else {
77			break;
78			}
79
80			}
81
82			return numToken;
83			}
84
85			bool StringTokenizer::hasMoreTokens() {
86	tim	1737
87			if (currentPos_ == end_) {
88			return false;
89			} else if (returnTokens_) {
90			return true;
91			} else {
92			std::string::iterator i = currentPos_;
93	tim	1736
94	tim	1737	//walk through the remaining string to check whether it contains non-delimeter or not
95			while(i != end_ && isDelimiter(*i)) {
96			++i;
97			}
98
99			return i != end_ ? true : false;
100			}
101	tim	1736	}
102
103			std::string StringTokenizer::nextToken() {
104	tim	1741	std::string result;
105	tim	1736
106			if(currentPos_ != end_) {
107			std::insert_iterator<string> insertIter(result, result.begin());
108
109			while( currentPos_ != end_ && isDelimiter(*currentPos_)) {
110
111			if (returnTokens_) {
112			insertIter++ = currentPos_++;
113			return result;
114			}
115
116			++currentPos_;
117			}
118
119			while (currentPos_ != end_ && !isDelimiter(*currentPos_)) {
120			insertIter++ = currentPos_++;
121			}
122
123			}
124
125			return result;
126			}
127
128			int StringTokenizer::nextTokenAsInt() {
129	tim	1741	std::string token = nextToken();
130			std::istringstream iss(token);
131			int result;
132
133			if (iss >> result) {
134			return result;
135			} else {
136			std::err << "unable to convert " << token << "to an integer" << std::endl;
137			return 0;
138			}
139	tim	1736	}
140
141			float StringTokenizer::nextTokenAsFloat() {
142	tim	1741	std::string token = nextToken();
143			std::istringstream iss(token);
144			float result;
145
146			if (iss >> result) {
147			return result;
148			} else {
149			std::err << "unable to convert " << token << "to a float" << std::endl;
150			return 0.0;
151			}
152	tim	1736	}
153
154	tim	1741	double StringTokenizer::nextTokenAsDouble() {
155			std::string token = nextToken();
156			std::istringstream iss(token);
157			double result;
158
159			if (iss >> result) {
160			return result;
161			} else {
162			std::err << "unable to convert " << token << "to a double" << std::endl;
163			return 0.0;
164			}
165			}
166
167	tim	1736	std::string StringTokenizer::peekNextToken() {
168			string result;
169			std::string::const_iterator tmpIter = currentPos_;
170
171			if(tmpIter != end_) {
172			std::insert_iterator<string> insertIter(result, result.begin());
173
174			while(tmpIter != end_ && isDelimiter(*tmpIter)) {
175
176			if (returnTokens_) {
177			insertIter++ = tmpIter++;
178			return result;
179			}
180
181			++tmpIter;
182			}
183
184			while (tmpIter != end_ && !isDelimiter(*tmpIter)) {
185			insertIter++ = tmpIter++;
186			}
187			}
188
189			return result;
190			}
191
192			}
193
194			}