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. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * SUPPORT OPEN SCIENCE!  If you use OpenMD or its source code in your
 * research, please cite the appropriate papers when you publish your
 * work.  Good starting points are:
 *                                                                      
 * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).             
 * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).          
 * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).          
 * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010).
 * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
 */
 
#include <iostream>
#include <iterator>
#include <sstream>
#include "utils/StringTokenizer.hpp"

namespace OpenMD {


  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()));
  }

  RealType 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;    
  }

 std::vector<std::string>  StringTokenizer::getAllTokens() {
    std::vector<std::string> tokens;
    while (hasMoreTokens()) {
        tokens.push_back(nextToken());
    }
    return tokens;
 }
  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 OpenMD

Revision:	1782
Committed:	Wed Aug 22 02:28:28 2012 UTC (12 years, 8 months ago) by gezelter
File size:	6562 byte(s)
Log Message:	MERGE OpenMD development branch 1465:1781 into trunk
#	User	Rev	Content
1	gezelter	507	/*
2	gezelter	246	* 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	gezelter	1390	* 1. Redistributions of source code must retain the above copyright
10	gezelter	246	* notice, this list of conditions and the following disclaimer.
11			*
12	gezelter	1390	* 2. Redistributions in binary form must reproduce the above copyright
13	gezelter	246	* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the
15			* distribution.
16			*
17			* This software is provided "AS IS," without a warranty of any
18			* kind. All express or implied conditions, representations and
19			* warranties, including any implied warranty of merchantability,
20			* fitness for a particular purpose or non-infringement, are hereby
21			* excluded. The University of Notre Dame and its licensors shall not
22			* be liable for any damages suffered by licensee as a result of
23			* using, modifying or distributing the software or its
24			* derivatives. In no event will the University of Notre Dame or its
25			* licensors be liable for any lost revenue, profit or data, or for
26			* direct, indirect, special, consequential, incidental or punitive
27			* damages, however caused and regardless of the theory of liability,
28			* arising out of the use of or inability to use software, even if the
29			* University of Notre Dame has been advised of the possibility of
30			* such damages.
31	gezelter	1390	*
32			* SUPPORT OPEN SCIENCE! If you use OpenMD or its source code in your
33			* research, please cite the appropriate papers when you publish your
34			* work. Good starting points are:
35			*
36			* [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).
37			* [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).
38			* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).
39	gezelter	1782	* [4] Kuang & Gezelter, J. Chem. Phys. 133, 164101 (2010).
40			* [5] Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
41	gezelter	246	*/
42
43			#include <iostream>
44			#include <iterator>
45			#include <sstream>
46			#include "utils/StringTokenizer.hpp"
47
48	gezelter	1390	namespace OpenMD {
49	gezelter	246
50
51	gezelter	507	StringTokenizer::StringTokenizer(const std::string & str, const std::string & delim)
52			: tokenString_(str), delim_(delim), returnTokens_(false),
53			currentPos_(tokenString_.begin()), end_(tokenString_.end()){
54	gezelter	246
55	gezelter	507	}
56	gezelter	246
57	gezelter	507	StringTokenizer::StringTokenizer(std::string::const_iterator& first, std::string::const_iterator& last,
58			const std::string & delim)
59			: tokenString_(first, last) , delim_(delim), returnTokens_(false),
60			currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
61	gezelter	246
62	gezelter	507	}
63	gezelter	246
64	gezelter	507	StringTokenizer::StringTokenizer(const std::string&str, const std::string&delim,
65			bool returnTokens)
66			: tokenString_(str), delim_(delim), returnTokens_(returnTokens),
67			currentPos_(tokenString_.begin()), end_(tokenString_.end()) {
68	gezelter	246
69	gezelter	507	}
70	gezelter	246
71	gezelter	507	bool StringTokenizer::isDelimiter(const char c) {
72	gezelter	246	return delim_.find(c) == std::string::npos ? false : true;
73	gezelter	507	}
74	gezelter	246
75	gezelter	507	int StringTokenizer::countTokens() {
76	gezelter	246
77			std::string::const_iterator tmpIter = currentPos_;
78			int numToken = 0;
79
80			while (true) {
81
82	gezelter	507	//skip delimiter first
83			while( tmpIter != end_ && isDelimiter(*tmpIter)) {
84			++tmpIter;
85	gezelter	246
86	gezelter	507	if (returnTokens_) {
87			//if delimiter is consider as token
88			++numToken;
89			}
90			}
91	gezelter	246
92	gezelter	507	if (tmpIter == end_) {
93			break;
94			}
95	gezelter	246
96	gezelter	507	//encount a token here
97			while ( tmpIter != end_ && !isDelimiter(*tmpIter) ) {
98			++tmpIter;
99			}
100	gezelter	246
101	gezelter	507	++numToken;
102	gezelter	246
103			}
104
105			return numToken;
106	gezelter	507	}
107	gezelter	246
108	gezelter	507	bool StringTokenizer::hasMoreTokens() {
109	gezelter	246
110			if (currentPos_ == end_) {
111	gezelter	507	return false;
112	gezelter	246	} else if (returnTokens_) {
113	gezelter	507	return true;
114	gezelter	246	} else {
115	gezelter	507	std::string::const_iterator i = currentPos_;
116	gezelter	246
117	gezelter	507	//walk through the remaining string to check whether it contains non-delimeter or not
118			while(i != end_ && isDelimiter(*i)) {
119			++i;
120			}
121	gezelter	246
122	gezelter	507	return i != end_ ? true : false;
123	gezelter	246	}
124	gezelter	507	}
125	gezelter	246
126	gezelter	507	std::string StringTokenizer::nextToken() {
127	gezelter	246	std::string result;
128
129			if(currentPos_ != end_) {
130	gezelter	507	std::insert_iterator<std::string> insertIter(result, result.begin());
131	gezelter	246
132	gezelter	507	while( currentPos_ != end_ && isDelimiter(*currentPos_)) {
133	gezelter	246
134	gezelter	507	if (returnTokens_) {
135			insertIter++ = currentPos_++;
136			return result;
137			}
138	gezelter	246
139	gezelter	507	++currentPos_;
140			}
141	gezelter	246
142	gezelter	507	while (currentPos_ != end_ && !isDelimiter(*currentPos_)) {
143			insertIter++ = currentPos_++;
144			}
145	gezelter	246
146			}
147
148			return result;
149	gezelter	507	}
150	gezelter	246
151	gezelter	507	bool StringTokenizer::nextTokenAsBool() {
152	gezelter	246	std::string token = nextToken();
153			std::istringstream iss(token);
154			bool result;
155
156			if (iss >> result) {
157	gezelter	507	return result;
158	gezelter	246	} else {
159	gezelter	507	std::cerr << "unable to convert " << token << " to a bool" << std::endl;
160			return false;
161	gezelter	246	}
162	gezelter	507	}
163	tim	261
164	gezelter	507	//Since libstdc++(GCC 3.2) has an i/ostream::operator>>/<<(streambuf*) bug (Bug 9318)
165			//Instead of using iostream facility, we use C library
166			int StringTokenizer::nextTokenAsInt() {
167	gezelter	246	std::string token = nextToken();
168	tim	261
169			return atoi(token.c_str());
170	gezelter	507	}
171	gezelter	246
172	gezelter	507	float StringTokenizer::nextTokenAsFloat() {
173	gezelter	246	std::string token = nextToken();
174	tim	261	convertFortranNumber(token);
175			return (float) (atof(token.c_str()));
176	gezelter	507	}
177	gezelter	246
178	tim	963	RealType StringTokenizer::nextTokenAsDouble() {
179	gezelter	246	std::string token = nextToken();
180	tim	261	convertFortranNumber(token);
181			return atof(token.c_str());
182	gezelter	507	}
183	gezelter	246
184	gezelter	507	std::string StringTokenizer::peekNextToken() {
185	gezelter	246	std::string result;
186			std::string::const_iterator tmpIter = currentPos_;
187
188			if(tmpIter != end_) {
189	gezelter	507	std::insert_iterator<std::string> insertIter(result, result.begin());
190	gezelter	246
191	gezelter	507	while(tmpIter != end_ && isDelimiter(*tmpIter)) {
192	gezelter	246
193	gezelter	507	if (returnTokens_) {
194			insertIter++ = tmpIter++;
195			return result;
196			}
197	gezelter	246
198	gezelter	507	++tmpIter;
199			}
200	gezelter	246
201	gezelter	507	while (tmpIter != end_ && !isDelimiter(*tmpIter)) {
202			insertIter++ = tmpIter++;
203			}
204	gezelter	246	}
205
206			return result;
207	gezelter	507	}
208	gezelter	246
209	tim	770	std::vector<std::string> StringTokenizer::getAllTokens() {
210			std::vector<std::string> tokens;
211			while (hasMoreTokens()) {
212			tokens.push_back(nextToken());
213			}
214			return tokens;
215			}
216	gezelter	507	void StringTokenizer::convertFortranNumber(std::string& fortranNumber) {
217	tim	261	std::string::iterator i;
218			for(i = fortranNumber.begin(); i != fortranNumber.end(); ++i) {
219	gezelter	507	if (i == 'd' \|\| i == 'D') {
220			*i = 'E';
221			}
222	tim	261	}
223	gezelter	507	}
224	tim	261
225	gezelter	1390	}//end namespace OpenMD
226	gezelter	246