forked from xuos/xiuos
Add nuttx to the system framework, which is 10.1.0
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TangYiwen123
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/****************************************************************************
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* apps/include/graphics/nxwidgets/cstringiterator.hxx
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
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* me be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************
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*
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* Portions of this package derive from Woopsi (http://woopsi.org/) and
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* portions are original efforts. It is difficult to determine at this
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* point what parts are original efforts and which parts derive from Woopsi.
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* However, in any event, the work of Antony Dzeryn will be acknowledged
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* in most NxWidget files. Thanks Antony!
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*
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* Copyright (c) 2007-2011, Antony Dzeryn
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the names "Woopsi", "Simian Zombie" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CSTRINGITERATOR_HXX
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#define __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CSTRINGITERATOR_HXX
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Implementation Classes
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****************************************************************************/
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#if defined(__cplusplus)
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namespace NXWidgets
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{
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class CNxString;
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/**
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* Class used to efficiently iterate over the characters in a CNxString
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* object. The CNxString is a Unicode string that uses the fixed-width
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* 16-bit encoding to represent its characters.
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*/
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class CStringIterator
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{
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private:
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const CNxString *m_pString; /**< String being iterated over. */
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const nxwidget_char_t *m_pCurrentChar; /**< Pointer to the current position of the iterator. */
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int m_currentIndex; /**< Iterator's current index within the string. */
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public:
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/**
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* Constructor. Moves the iterator to the first character in the string.
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*
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* @param string Pointer to the string that will be iterated over.
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*/
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CStringIterator(FAR const CNxString* string);
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/**
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* Destructor.
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*/
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inline ~CStringIterator(void) { }
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/**
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* Moves the iterator to the first character in the string.
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*
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* @param Returns false if the string is empty
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*/
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bool moveToFirst(void);
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/**
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* Moves the iterator to the last character in the string.
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*
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* @param Returns false if the string is empty
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*/
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bool moveToLast(void);
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/**
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* Move the iterator to the next character in the string.
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*
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* @return True if the iterator moved; false if not (indicates end of string).
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*/
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bool moveToNext(void);
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/**
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* Move the iterator to the previous character in the string.
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*
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* @return True if the iterator moved; false if not (indicates start of string).
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*/
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bool moveToPrevious(void);
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/**
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* Move the iterator to the specified index.
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*
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* @param index The index to move to.
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* @return True if the iterator moved; false if not (indicates end of string).
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*/
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bool moveTo(int index);
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/**
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* Get the current position of the iterator within the string.
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*
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* @return The current character index of the iterator.
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*/
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inline int getIndex(void) const
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{
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return m_currentIndex;
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}
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/**
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* Get the letter in the string at the iterator's current point.
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*
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* @return The current character in the string.
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*/
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inline nxwidget_char_t getChar(void) const
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{
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return *m_pCurrentChar;
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}
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};
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}
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#endif // __cplusplus
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#endif // __APPS_INCLUDE_GRAPHICS_NXWIDGETS_CSTRINGITERATOR_HXX
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