src/utils/Trim.hpp

/*
 * 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.
 */
 
#ifndef UTILS_TRIM_HPP
#define UTILS_TRIM_HPP

#include <string>
#include <cctype>
#include "utils/Predicate.hpp"

/**
 * @file Trim.hpp
 * Defines trim algorithms. Trim algorithms are used to remove trailing and leading spaces from a string. 
 */
namespace oopse {

  /**
   * Remove all leading spaces in-place. The supplied predicate is used to determine which 
   * characters are considered spaces
   * @param str An input sequence
   * @param IsSpace An unary predicate identifying spaces 
   *
   * @code
   * std::string str = "  acb  trimLeftIf test case"
   * trimLeftIf(str, pred() || isFromRange('a', 'c')); 
   * std::cout << str << std::endl; //print "trimLeft test case"
   * 
   * @endcode
   */
  template<typename Predict>     
  void trimLeftIf(std::string& str, Predict pred) {
    std::string::iterator i = str.begin();

    for (; i != str.end(); ++i) {
      if (!pred(*i)) {
        break;
      }
    }
        
    str.erase(str.begin(), i);
  }

  /**
   * Remove all trailing spaces in-place. The supplied predicate is used to determine which 
   * characters are considered spaces
   * @param str An input sequence 
   */
  template<typename Predict>     
  void trimRightIf(std::string& str, Predict pred) {
    std::string::iterator i = str.end();

    for (; i != str.begin();) {
      if (!pred(*(--i))) {
        ++i;
        break;
      }
    }
        
    str.erase(i, str.end());
  }

  /**
   *Remove all leading and trailing spaces in-place. The supplied predicate is used to determine 
   * which characters are considered spaces
   * @param str An input sequence
   */
  template<typename Predict>     
  void trimIf(std::string& str, Predict pred) {
    trimLeftIf(str, pred);
    trimRightIf(str, pred);        
  }

  /**
   * Remove all leading spaces from the input. The supplied predicate is used to determine 
   * which characters are considered spaces
   * @return A trimmed copy of the input
   * @param input An input sequence 
   */
  template<typename Predict>
  std::string trimLeftCopyIf(const std::string& input, Predict pred) {
    std::string result(input);
    trimLeftIf(result, pred);
    return result;
  }

  /**
   * Remove all trailing spaces from the input. The supplied predicate is used to determine 
   * which characters are considered spaces
   * @return A trimmed copy of the input
   * @param input An input sequence
   */
  template<typename Predict>
  std::string trimRightCopyIf(const std::string& input, Predict pred) {
    std::string result(input);
    trimRightIf(result, pred);
    return result;
  }

  /**
   * Remove all leading and trailing spaces from the input. The supplied predicate is used to 
   * determine which characters are considered spaces
   * @return A trimmed copy of the input
   * @param input An input sequence
   */
  template<typename Predict>     
  std::string trimCopyIf(const std::string& input, Predict pred) {
    std::string result(input);
    trimIf(result, pred);
    return result;
  }

    
  /**
   * Remove all leading spaces in-place.
   * @param str An input sequence
   */
  void trimLeft(std::string& str);

  /**
   * Remove all trailing spaces in-place.
   * @param str An input sequence 
   */
  void trimRight(std::string& str);

  /**
   *Remove all leading and trailing spaces in-place
   * @param str An input sequence
   */
  void trim(std::string& str);

  /**
   * Remove all leading spaces from the input.
   * @return A trimmed copy of the input
   * @param input An input sequence 
   */
  std::string trimLeftCopy(const std::string& input);

  /**
   * Remove all trailing spaces from the input.
   * @return A trimmed copy of the input
   * @param input An input sequence
   */
  std::string trimRightCopy(const std::string& input);

  /**
   *Remove all leading and trailing spaces from the input.
   * @return A trimmed copy of the input
   * @param input An input sequence
   */
  std::string trimCopy(const std::string& input);

}//end namespace oopse
#endif //UTILS_TRIM_HPP    
Revision:	2212
Committed:	Fri Apr 22 21:52:51 2005 UTC (19 years, 2 months ago) by tim
File size:	6271 byte(s)
Log Message:	adding CharClassificationFunctor to fix the locale problem of c++
#	User	Rev	Content
1	tim	2212	/*
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			#ifndef UTILS_TRIM_HPP
43			#define UTILS_TRIM_HPP
44
45			#include <string>
46			#include <cctype>
47			#include "utils/Predicate.hpp"
48
49			/**
50			* @file Trim.hpp
51			* Defines trim algorithms. Trim algorithms are used to remove trailing and leading spaces from a string.
52			*/
53			namespace oopse {
54
55			/**
56			* Remove all leading spaces in-place. The supplied predicate is used to determine which
57			* characters are considered spaces
58			* @param str An input sequence
59			* @param IsSpace An unary predicate identifying spaces
60			*
61			* @code
62			* std::string str = " acb trimLeftIf test case"
63			* trimLeftIf(str, pred() \|\| isFromRange('a', 'c'));
64			* std::cout << str << std::endl; //print "trimLeft test case"
65			*
66			* @endcode
67			*/
68			template<typename Predict>
69			void trimLeftIf(std::string& str, Predict pred) {
70			std::string::iterator i = str.begin();
71
72			for (; i != str.end(); ++i) {
73			if (!pred(*i)) {
74			break;
75			}
76			}
77
78			str.erase(str.begin(), i);
79			}
80
81			/**
82			* Remove all trailing spaces in-place. The supplied predicate is used to determine which
83			* characters are considered spaces
84			* @param str An input sequence
85			*/
86			template<typename Predict>
87			void trimRightIf(std::string& str, Predict pred) {
88			std::string::iterator i = str.end();
89
90			for (; i != str.begin();) {
91			if (!pred(*(--i))) {
92			++i;
93			break;
94			}
95			}
96
97			str.erase(i, str.end());
98			}
99
100			/**
101			*Remove all leading and trailing spaces in-place. The supplied predicate is used to determine
102			* which characters are considered spaces
103			* @param str An input sequence
104			*/
105			template<typename Predict>
106			void trimIf(std::string& str, Predict pred) {
107			trimLeftIf(str, pred);
108			trimRightIf(str, pred);
109			}
110
111			/**
112			* Remove all leading spaces from the input. The supplied predicate is used to determine
113			* which characters are considered spaces
114			* @return A trimmed copy of the input
115			* @param input An input sequence
116			*/
117			template<typename Predict>
118			std::string trimLeftCopyIf(const std::string& input, Predict pred) {
119			std::string result(input);
120			trimLeftIf(result, pred);
121			return result;
122			}
123
124			/**
125			* Remove all trailing spaces from the input. The supplied predicate is used to determine
126			* which characters are considered spaces
127			* @return A trimmed copy of the input
128			* @param input An input sequence
129			*/
130			template<typename Predict>
131			std::string trimRightCopyIf(const std::string& input, Predict pred) {
132			std::string result(input);
133			trimRightIf(result, pred);
134			return result;
135			}
136
137			/**
138			* Remove all leading and trailing spaces from the input. The supplied predicate is used to
139			* determine which characters are considered spaces
140			* @return A trimmed copy of the input
141			* @param input An input sequence
142			*/
143			template<typename Predict>
144			std::string trimCopyIf(const std::string& input, Predict pred) {
145			std::string result(input);
146			trimIf(result, pred);
147			return result;
148			}
149
150
151			/**
152			* Remove all leading spaces in-place.
153			* @param str An input sequence
154			*/
155			void trimLeft(std::string& str);
156
157			/**
158			* Remove all trailing spaces in-place.
159			* @param str An input sequence
160			*/
161			void trimRight(std::string& str);
162
163			/**
164			*Remove all leading and trailing spaces in-place
165			* @param str An input sequence
166			*/
167			void trim(std::string& str);
168
169			/**
170			* Remove all leading spaces from the input.
171			* @return A trimmed copy of the input
172			* @param input An input sequence
173			*/
174			std::string trimLeftCopy(const std::string& input);
175
176			/**
177			* Remove all trailing spaces from the input.
178			* @return A trimmed copy of the input
179			* @param input An input sequence
180			*/
181			std::string trimRightCopy(const std::string& input);
182
183			/**
184			*Remove all leading and trailing spaces from the input.
185			* @return A trimmed copy of the input
186			* @param input An input sequence
187			*/
188			std::string trimCopy(const std::string& input);
189
190			}//end namespace oopse
191			#endif //UTILS_TRIM_HPP