NXWidgets: cstringiterator.cxx Source File

NXWidgets 1.19

cstringiterator.cxx
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1 /****************************************************************************
2 * NxWidgets/libnxwidgets/src/cgraphicsport.cxx
3 *
4 * Copyright (C) 2012 Gregory Nutt. All rights reserved.
5 * Author: Gregory Nutt <gnutt@nuttx.org>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
18 * me be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
28 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 *
34 ****************************************************************************
35 *
36 * Portions of this package derive from Woopsi (http://woopsi.org/) and
37 * portions are original efforts. It is difficult to determine at this
38 * point what parts are original efforts and which parts derive from Woopsi.
39 * However, in any event, the work of Antony Dzeryn will be acknowledged
40 * in most NxWidget files. Thanks Antony!
41 *
42 * Copyright (c) 2007-2011, Antony Dzeryn
43 * All rights reserved.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions are met:
47 *
48 * * Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * * Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * * Neither the names "Woopsi", "Simian Zombie" nor the
54 * names of its contributors may be used to endorse or promote products
55 * derived from this software without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
58 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
59 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
60 * DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
61 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
62 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
63 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
64 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
66 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
67 *
68 ****************************************************************************/
69
70 /****************************************************************************
71 * Included Files
72 ****************************************************************************/
73
74 #include <nuttx/config.h>
75
76 #include <stdint.h>
77 #include <stdbool.h>
78
79 #include "cnxstring.hxx"
80 #include "cstringiterator.hxx"
81
82 /****************************************************************************
83 * Pre-Processor Definitions
84 ****************************************************************************/
85
86 /****************************************************************************
87 * Method Implementations
88 ****************************************************************************/
89
90 using namespace NXWidgets;
91
92 /**
93 * Constructor. Moves the iterator to the first character in the string.
94 *
95 * @param string Pointer to the string that will be iterated over.
96 */
97
98 CStringIterator::CStringIterator(FAR const CNxString* string)
99 {
100 m_pString = string;
101 m_pCurrentChar = m_pString->getCharArray();
102 m_currentIndex = 0;
103 }
104
105 /**
106 * Moves the iterator to the first character in the string.
107 *
108 * @param Returns false if the string is empty
109 */
110
111 bool CStringIterator::moveToFirst()
112 {
113 int length = m_pString->getLength();
114 if (length > 0)
115 {
116 m_pCurrentChar = m_pString->getCharArray();
117 m_currentIndex = 0;
118 return true;
119 }
120
121 return false;
122 }
123
124 /**
125 * Moves the iterator to the last character in the string.
126 *
127 * @param Returns false if the string is empty
128 */
129
130 bool CStringIterator::moveToLast(void)
131 {
132 int length = m_pString->getLength();
133 if (length > 0)
134 {
135 m_pCurrentChar = m_pString->getCharArray() + length - 1;
136 m_currentIndex = length - 1;
137 return true;
138 }
139
140 return false;
141 }
142
143 /**
144 * Move the iterator to the next character in the string.
145 *
146 * @return True if the iterator moved; false if not (indicates end of string).
147 */
148
149 bool CStringIterator::moveToNext(void)
150 {
151 if (m_currentIndex < m_pString->getLength() - 1)
152 {
153 m_pCurrentChar++;
154 m_currentIndex++;
155 return true;
156 }
157
158 return false;
159 }
160
161 /**
162 * Move the iterator to the previous character in the string.
163 *
164 * @return True if the iterator moved; false if not (indicates start of string).
165 */
166
167 bool CStringIterator::moveToPrevious(void)
168 {
169 if (m_currentIndex > 0)
170 {
171 m_pCurrentChar--;
172 m_currentIndex--;
173 return true;
174 }
175 return false;
176 }
177
178 /**
179 * Move the iterator to the specified index.
180 *
181 * @param index The index to move to.
182 * @return True if the iterator moved; false if not (indicates end of string).
183 */
184
185 bool CStringIterator::moveTo(int index)
186 {
187 // Abort if index exceeds the size of the string
188
189 if (index < m_pString->getLength())
190 {
191 // Move to the requested position
192
193 m_pCurrentChar = m_pString->getCharArray() + index;
194 m_currentIndex = index;
195 return true;
196 }
197 return false;
198 }
NXWidgets::CStringIterator::m_currentIndex
int m_currentIndex
Definition: cstringiterator.hxx:107
NXWidgets::CStringIterator::CStringIterator
CStringIterator(FAR const CNxString *string)
Definition: cstringiterator.cxx:98
NXWidgets::CStringIterator::moveToPrevious
bool moveToPrevious(void)
Definition: cstringiterator.cxx:167
NXWidgets::CStringIterator::m_pCurrentChar
const nxwidget_char_t * m_pCurrentChar
Definition: cstringiterator.hxx:106
cstringiterator.hxx
NXWidgets
Definition: cbgwindow.hxx:65
NXWidgets::CStringIterator::moveToFirst
bool moveToFirst(void)
Definition: cstringiterator.cxx:111
NXWidgets::CStringIterator::moveToNext
bool moveToNext(void)
Definition: cstringiterator.cxx:149
NXWidgets::CNxString::getCharArray
FAR const nxwidget_char_t * getCharArray(void) const
Definition: cnxstring.hxx:174
NXWidgets::CNxString::getLength
const unsigned int getLength(void) const
Definition: cnxstring.hxx:325
NXWidgets::CStringIterator::moveToLast
bool moveToLast(void)
Definition: cstringiterator.cxx:130
NXWidgets::CNxString
Definition: cnxstring.hxx:121
NXWidgets::CStringIterator::moveTo
bool moveTo(int index)
Definition: cstringiterator.cxx:185
NXWidgets::CStringIterator::m_pString
const CNxString * m_pString
Definition: cstringiterator.hxx:105
cnxstring.hxx