src/utils/StringTokenizer.cpp

/*
 * Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
 *
 * The University of Notre Dame grants you ("Licensee") a
 * non-exclusive, royalty free, license to use, modify and
 * redistribute this software in source and binary code form, provided
 * that the following conditions are met:
 *
 * 1. Acknowledgement of the program authors must be made in any
 *    publication of scientific results based in part on use of the
 *    program.  An acceptable form of acknowledgement is citation of
 *    the article in which the program was described (Matthew
 *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
 *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
 *    Parallel Simulation Engine for Molecular Dynamics,"
 *    J. Comput. Chem. 26, pp. 252-271 (2005))
 *
 * 2. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 3. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. All express or implied conditions, representations and
 * warranties, including any implied warranty of merchantability,
 * fitness for a particular purpose or non-infringement, are hereby
 * excluded.  The University of Notre Dame and its licensors shall not
 * be liable for any damages suffered by licensee as a result of
 * using, modifying or distributing the software or its
 * derivatives. In no event will the University of Notre Dame or its
 * licensors be liable for any lost revenue, profit or data, or for
 * direct, indirect, special, consequential, incidental or punitive
 * damages, however caused and regardless of the theory of liability,
 * arising out of the use of or inability to use software, even if the
 * University of Notre Dame has been advised of the possibility of
 * such damages.
 */
 
#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;
    }
  }
 
  //Since libstdc++(GCC 3.2) has an i/ostream::operator>>/<<(streambuf*) bug (Bug 9318)
  //Instead of using iostream facility, we use C library
  int StringTokenizer::nextTokenAsInt() {
    std::string token = nextToken();
   
    return atoi(token.c_str());
  }

  float StringTokenizer::nextTokenAsFloat() {
    std::string token = nextToken();
    convertFortranNumber(token);
    return (float) (atof(token.c_str()));
  }

  double StringTokenizer::nextTokenAsDouble() {
    std::string token = nextToken();
    convertFortranNumber(token);
    return atof(token.c_str());
  }

  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;    
  }

  void StringTokenizer::convertFortranNumber(std::string& fortranNumber) {
    std::string::iterator i;
    for(i = fortranNumber.begin(); i != fortranNumber.end(); ++i) {
      if (*i == 'd' || *i == 'D') {
        *i = 'E';
      }
    }
  }

}//end namespace oopse

Revision:	2204
Committed:	Fri Apr 15 22:04:00 2005 UTC (19 years, 2 months ago) by gezelter
File size:	6256 byte(s)
Log Message:	xemacs has been drafted to perform our indentation services
#	Content
1	/*
2	* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
3	*
4	* The University of Notre Dame grants you ("Licensee") a
5	* non-exclusive, royalty free, license to use, modify and
6	* redistribute this software in source and binary code form, provided
7	* that the following conditions are met:
8	*
9	* 1. Acknowledgement of the program authors must be made in any
10	* publication of scientific results based in part on use of the
11	* program. An acceptable form of acknowledgement is citation of
12	* the article in which the program was described (Matthew
13	* A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
14	* J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
15	* Parallel Simulation Engine for Molecular Dynamics,"
16	* J. Comput. Chem. 26, pp. 252-271 (2005))
17	*
18	* 2. Redistributions of source code must retain the above copyright
19	* notice, this list of conditions and the following disclaimer.
20	*
21	* 3. Redistributions in binary form must reproduce the above copyright
22	* notice, this list of conditions and the following disclaimer in the
23	* documentation and/or other materials provided with the
24	* distribution.
25	*
26	* This software is provided "AS IS," without a warranty of any
27	* kind. All express or implied conditions, representations and
28	* warranties, including any implied warranty of merchantability,
29	* fitness for a particular purpose or non-infringement, are hereby
30	* excluded. The University of Notre Dame and its licensors shall not
31	* be liable for any damages suffered by licensee as a result of
32	* using, modifying or distributing the software or its
33	* derivatives. In no event will the University of Notre Dame or its
34	* licensors be liable for any lost revenue, profit or data, or for
35	* direct, indirect, special, consequential, incidental or punitive
36	* damages, however caused and regardless of the theory of liability,
37	* arising out of the use of or inability to use software, even if the
38	* University of Notre Dame has been advised of the possibility of
39	* such damages.
40	*/
41
42	#include <iostream>
43	#include <iterator>
44	#include <sstream>
45	#include "utils/StringTokenizer.hpp"
46
47	namespace oopse {
48
49
50	StringTokenizer::StringTokenizer(const std::string & str, const std::string & delim)
51	: tokenString_(str), delim_(delim), returnTokens_(false),
52	currentPos_(tokenString_.begin()), end_(tokenString_.end()){
53
54	}
55
56	StringTokenizer::StringTokenizer(std::string::const_iterator& first, std::string::const_iterator& last,
57	const std::string & delim)
58	: tokenString_(first, last) , delim_(delim), returnTokens_(false),
59	currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
60
61	}
62
63	StringTokenizer::StringTokenizer(const std::string&str, const std::string&delim,
64	bool returnTokens)
65	: tokenString_(str), delim_(delim), returnTokens_(returnTokens),
66	currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
67
68	}
69
70	bool StringTokenizer::isDelimiter(const char c) {
71	return delim_.find(c) == std::string::npos ? false : true;
72	}
73
74	int StringTokenizer::countTokens() {
75
76	std::string::const_iterator tmpIter = currentPos_;
77	int numToken = 0;
78
79	while (true) {
80
81	//skip delimiter first
82	while( tmpIter != end_ && isDelimiter(*tmpIter)) {
83	++tmpIter;
84
85	if (returnTokens_) {
86	//if delimiter is consider as token
87	++numToken;
88	}
89	}
90
91	if (tmpIter == end_) {
92	break;
93	}
94
95	//encount a token here
96	while ( tmpIter != end_ && !isDelimiter(*tmpIter) ) {
97	++tmpIter;
98	}
99
100	++numToken;
101
102	}
103
104	return numToken;
105	}
106
107	bool StringTokenizer::hasMoreTokens() {
108
109	if (currentPos_ == end_) {
110	return false;
111	} else if (returnTokens_) {
112	return true;
113	} else {
114	std::string::const_iterator i = currentPos_;
115
116	//walk through the remaining string to check whether it contains non-delimeter or not
117	while(i != end_ && isDelimiter(*i)) {
118	++i;
119	}
120
121	return i != end_ ? true : false;
122	}
123	}
124
125	std::string StringTokenizer::nextToken() {
126	std::string result;
127
128	if(currentPos_ != end_) {
129	std::insert_iterator<std::string> insertIter(result, result.begin());
130
131	while( currentPos_ != end_ && isDelimiter(*currentPos_)) {
132
133	if (returnTokens_) {
134	insertIter++ = currentPos_++;
135	return result;
136	}
137
138	++currentPos_;
139	}
140
141	while (currentPos_ != end_ && !isDelimiter(*currentPos_)) {
142	insertIter++ = currentPos_++;
143	}
144
145	}
146
147	return result;
148	}
149
150	bool StringTokenizer::nextTokenAsBool() {
151	std::string token = nextToken();
152	std::istringstream iss(token);
153	bool result;
154
155	if (iss >> result) {
156	return result;
157	} else {
158	std::cerr << "unable to convert " << token << " to a bool" << std::endl;
159	return false;
160	}
161	}
162
163	//Since libstdc++(GCC 3.2) has an i/ostream::operator>>/<<(streambuf*) bug (Bug 9318)
164	//Instead of using iostream facility, we use C library
165	int StringTokenizer::nextTokenAsInt() {
166	std::string token = nextToken();
167
168	return atoi(token.c_str());
169	}
170
171	float StringTokenizer::nextTokenAsFloat() {
172	std::string token = nextToken();
173	convertFortranNumber(token);
174	return (float) (atof(token.c_str()));
175	}
176
177	double StringTokenizer::nextTokenAsDouble() {
178	std::string token = nextToken();
179	convertFortranNumber(token);
180	return atof(token.c_str());
181	}
182
183	std::string StringTokenizer::peekNextToken() {
184	std::string result;
185	std::string::const_iterator tmpIter = currentPos_;
186
187	if(tmpIter != end_) {
188	std::insert_iterator<std::string> insertIter(result, result.begin());
189
190	while(tmpIter != end_ && isDelimiter(*tmpIter)) {
191
192	if (returnTokens_) {
193	insertIter++ = tmpIter++;
194	return result;
195	}
196
197	++tmpIter;
198	}
199
200	while (tmpIter != end_ && !isDelimiter(*tmpIter)) {
201	insertIter++ = tmpIter++;
202	}
203	}
204
205	return result;
206	}
207
208	void StringTokenizer::convertFortranNumber(std::string& fortranNumber) {
209	std::string::iterator i;
210	for(i = fortranNumber.begin(); i != fortranNumber.end(); ++i) {
211	if (i == 'd' \|\| i == 'D') {
212	*i = 'E';
213	}
214	}
215	}
216
217	}//end namespace oopse
218