diff options
Diffstat (limited to 'NxWidgets/libnxwidgets/src/cstringiterator.cxx')
-rw-r--r-- | NxWidgets/libnxwidgets/src/cstringiterator.cxx | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/NxWidgets/libnxwidgets/src/cstringiterator.cxx b/NxWidgets/libnxwidgets/src/cstringiterator.cxx new file mode 100644 index 000000000..2327af38f --- /dev/null +++ b/NxWidgets/libnxwidgets/src/cstringiterator.cxx @@ -0,0 +1,198 @@ +/**************************************************************************** + * NxWidgets/libnxwidgets/src/cgraphicsport.cxx + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted 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. + * 3. Neither the name NuttX, NxWidgets, nor the names of its contributors + * me be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + **************************************************************************** + * + * Portions of this package derive from Woopsi (http://woopsi.org/) and + * portions are original efforts. It is difficult to determine at this + * point what parts are original efforts and which parts derive from Woopsi. + * However, in any event, the work of Antony Dzeryn will be acknowledged + * in most NxWidget files. Thanks Antony! + * + * Copyright (c) 2007-2011, Antony Dzeryn + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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. + * * Neither the names "Woopsi", "Simian Zombie" nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <stdbool.h> + +#include "cnxstring.hxx" +#include "cstringiterator.hxx" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Method Implementations + ****************************************************************************/ + +using namespace NXWidgets; + +/** + * Constructor. Moves the iterator to the first character in the string. + * + * @param string Pointer to the string that will be iterated over. + */ + +CStringIterator::CStringIterator(FAR const CNxString* string) +{ + m_pString = string; + m_pCurrentChar = m_pString->getCharArray(); + m_currentIndex = 0; +} + +/** + * Moves the iterator to the first character in the string. + * + * @param Returns false if the string is empty + */ + +bool CStringIterator::moveToFirst() +{ + int length = m_pString->getLength(); + if (length > 0) + { + m_pCurrentChar = m_pString->getCharArray(); + m_currentIndex = 0; + return true; + } + + return false; +} + +/** + * Moves the iterator to the last character in the string. + * + * @param Returns false if the string is empty + */ + +bool CStringIterator::moveToLast(void) +{ + int length = m_pString->getLength(); + if (length > 0) + { + m_pCurrentChar = m_pString->getCharArray() + length - 1; + m_currentIndex = length - 1; + return true; + } + + return false; +} + +/** + * Move the iterator to the next character in the string. + * + * @return True if the iterator moved; false if not (indicates end of string). + */ + +bool CStringIterator::moveToNext(void) +{ + if (m_currentIndex < m_pString->getLength() - 1) + { + m_pCurrentChar++; + m_currentIndex++; + return true; + } + + return false; +} + +/** + * Move the iterator to the previous character in the string. + * + * @return True if the iterator moved; false if not (indicates start of string). + */ + +bool CStringIterator::moveToPrevious(void) +{ + if (m_currentIndex > 0) + { + m_pCurrentChar--; + m_currentIndex--; + return true; + } + return false; +} + +/** + * Move the iterator to the specified index. + * + * @param index The index to move to. + * @return True if the iterator moved; false if not (indicates end of string). + */ + +bool CStringIterator::moveTo(int index) +{ + // Abort if index exceeds the size of the string + + if (index < m_pString->getLength()) + { + // Move to the requested position + + m_pCurrentChar = m_pString->getCharArray() + index; + m_currentIndex = index; + return true; + } + return false; +} |