src/utils/StringTokenizer.hpp

/*
 * 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.
 *
 */

 /**
  * @file StringTokenizer.hpp
  * @author tlin
  * @date 09/20/2004
  * @time 11:30am
  * @version 1.0
  */
 
#ifndef UTIL_STRINGTOKENIZER_HPP
#define UTIL_STRINGTOKENIZER_HPP

#include <vector>

#include "util/NoSuchElementException.hpp"

namespace oopse{

    /**
     * @class StringTokenizer.hpp "util/StringTokenizer.hpp"
     *
     * @brief The string tokenizer class allows an application to break a string into tokens
     *
     * The set of delimiters (the characters that separate tokens) may be specified either 
     * at creation time or on a per-token basis. 
     * An instance of StringTokenizer behaves in one of two ways, depending on whether it was 
     * created with the returnTokens flag having the value true or false.
     */
    class StringTokenizer{
    
        public:
            
            /**
             * Constructs a string tokenizer for the specified string. The characters in the delim argument
             * are the delimiters for separating tokens. characters are skipped and only serve as 
             * separators between tokens.
             * @param str a string to be parsed.
             * @param delim the delimiters, default value is "\t\n\r".
             */
            StringTokenizer(const std::string& str, const std::string& delim = "\t\n\r");

            /**
             * Constructs a string tokenizer for the specified string. The characters in the delim argument
             * are the delimiters for separating tokens. 
             * If the returnTokens flag is true, then the delimiter characters are also returned as tokens. 
             * Each delimiter is returned as a string of length one. If the flag is false, the delimiter 
             * characters are skipped and only serve as separators between tokens.
             * @param str a string to be parsed. 
             * @param delim the delimiters. 
             * @param returnTokens flag indicating whether to return the delimiters as tokens.
             */
            StringTokenizer(const std::string& str, const std::string& delim, bool returnTokens);

            /**
             * Calculates the number of times that this tokenizer's nextToken method can be called 
             * before it generates an exception.
             *
             * @return the number of tokens remaining in the string using the current delimiter set.
             */
            int countTokens();

            /**
             * Tests if there are more tokens available from this tokenizer's string.
             *
             * @return true if there are more tokens available from this tokenizer's string, false otherwise
             */
            bool hasMoreTokens();

            /**
             * Returns the next token from this string tokenizer.
             *
             * @return the next token from this string tokenizer.
             *
             * @exception NoSuchElementException if there are no more tokens in this tokenizer's string
             */
            std::string nextToken();

            /**
             * Returns the next token in this string tokenizer's string. The new delimiter set remains the
             * default after this call.
             *
             * @param newDelim the new delimiters.
             *
             * @return the next token, after switching to the new delimiter set.
             *
             * @exception NoSuchElementException if there are no more tokens in this tokenizer's string.
             *
             */
            std::string nextToken(const std::string& newDelim); 

            /**
             * Returns the current delimiter set of this string tokenizer
             *
             * @return the current delimiter set
             */
            std::string getDelimiter();

        private:
            
            /**
             * Test if character is in current delimiter set.
             *
             * @param c character to be tested
             *
             * @return true if character is in current delimiter set, flase otherwise.
             */
            bool isDelimiter(char c);
            
            std::string delim_;  /**< current delimiter set of this string tokenizer */

            bool returnTokens_; /**< flag indicating whether to return the delimiters as tokens */
    };


} //namespace oopse
#endif //UTIL_STRINGTOKENIZER_HPP
Revision:	1594
Committed:	Mon Oct 18 23:13:23 2004 UTC (19 years, 8 months ago) by tim
File size:	5528 byte(s)
Log Message:	more tests on math library
#	Content
1	/*
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	/**
27	* @file StringTokenizer.hpp
28	* @author tlin
29	* @date 09/20/2004
30	* @time 11:30am
31	* @version 1.0
32	*/
33
34	#ifndef UTIL_STRINGTOKENIZER_HPP
35	#define UTIL_STRINGTOKENIZER_HPP
36
37	#include <vector>
38
39	#include "util/NoSuchElementException.hpp"
40
41	namespace oopse{
42
43	/**
44	* @class StringTokenizer.hpp "util/StringTokenizer.hpp"
45	*
46	* @brief The string tokenizer class allows an application to break a string into tokens
47	*
48	* The set of delimiters (the characters that separate tokens) may be specified either
49	* at creation time or on a per-token basis.
50	* An instance of StringTokenizer behaves in one of two ways, depending on whether it was
51	* created with the returnTokens flag having the value true or false.
52	*/
53	class StringTokenizer{
54
55	public:
56
57	/**
58	* Constructs a string tokenizer for the specified string. The characters in the delim argument
59	* are the delimiters for separating tokens. characters are skipped and only serve as
60	* separators between tokens.
61	* @param str a string to be parsed.
62	* @param delim the delimiters, default value is "\t\n\r".
63	*/
64	StringTokenizer(const std::string& str, const std::string& delim = "\t\n\r");
65
66	/**
67	* Constructs a string tokenizer for the specified string. The characters in the delim argument
68	* are the delimiters for separating tokens.
69	* If the returnTokens flag is true, then the delimiter characters are also returned as tokens.
70	* Each delimiter is returned as a string of length one. If the flag is false, the delimiter
71	* characters are skipped and only serve as separators between tokens.
72	* @param str a string to be parsed.
73	* @param delim the delimiters.
74	* @param returnTokens flag indicating whether to return the delimiters as tokens.
75	*/
76	StringTokenizer(const std::string& str, const std::string& delim, bool returnTokens);
77
78	/**
79	* Calculates the number of times that this tokenizer's nextToken method can be called
80	* before it generates an exception.
81	*
82	* @return the number of tokens remaining in the string using the current delimiter set.
83	*/
84	int countTokens();
85
86	/**
87	* Tests if there are more tokens available from this tokenizer's string.
88	*
89	* @return true if there are more tokens available from this tokenizer's string, false otherwise
90	*/
91	bool hasMoreTokens();
92
93	/**
94	* Returns the next token from this string tokenizer.
95	*
96	* @return the next token from this string tokenizer.
97	*
98	* @exception NoSuchElementException if there are no more tokens in this tokenizer's string
99	*/
100	std::string nextToken();
101
102	/**
103	* Returns the next token in this string tokenizer's string. The new delimiter set remains the
104	* default after this call.
105	*
106	* @param newDelim the new delimiters.
107	*
108	* @return the next token, after switching to the new delimiter set.
109	*
110	* @exception NoSuchElementException if there are no more tokens in this tokenizer's string.
111	*
112	*/
113	std::string nextToken(const std::string& newDelim);
114
115	/**
116	* Returns the current delimiter set of this string tokenizer
117	*
118	* @return the current delimiter set
119	*/
120	std::string getDelimiter();
121
122	private:
123
124	/**
125	* Test if character is in current delimiter set.
126	*
127	* @param c character to be tested
128	*
129	* @return true if character is in current delimiter set, flase otherwise.
130	*/
131	bool isDelimiter(char c);
132
133	std::string delim_; /*< current delimiter set of this string tokenizer /
134
135	bool returnTokens_; /*< flag indicating whether to return the delimiters as tokens /
136	};
137
138
139	} //namespace oopse
140	#endif //UTIL_STRINGTOKENIZER_HPP