99 lines
3.9 KiB
C++
99 lines
3.9 KiB
C++
/*! \file piiobytearray.h
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* \ingroup IO
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* \~\brief
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* \~english PIIODevice wrapper around PIByteArray
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* \~russian Обертка PIIODevice вокруг PIByteArray
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*/
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/*
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PIP - Platform Independent Primitives
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PIIODevice wrapper around PIByteArray
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Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PIIOBYTEARRAY_H
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#define PIIOBYTEARRAY_H
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#include "piiodevice.h"
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//! \ingroup IO
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//! \~\brief
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//! \~english PIIODevice wrapper around PIByteArray
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//! \~russian Обёртка PIIODevice вокруг PIByteArray
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class PIP_EXPORT PIIOByteArray: public PIIODevice
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{
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PIIODEVICE(PIIOByteArray, "");
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public:
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//! \~english Contructs %PIIOByteArray with "buffer" content and "mode" open mode
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//! \~russian Создает %PIIOByteArray с содержимым "buffer" и режимом открытия "mode"
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explicit PIIOByteArray(PIByteArray * buffer = 0, PIIODevice::DeviceMode mode = PIIODevice::ReadWrite);
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//! \~english Contructs %PIIOByteArray with "buffer" content only for read
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//! \~russian Создает %PIIOByteArray с содержимым "buffer" только для чтения
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explicit PIIOByteArray(const PIByteArray & buffer);
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//! \~english Returns content
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//! \~russian Возвращает содержимое
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PIByteArray * byteArray() const {return data_;}
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//! \~english Clear content buffer
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//! \~russian Очищает содержимое буфера
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void clear() {if (data_) data_->clear(); pos = 0;}
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//! \~english Open "buffer" content with "mode" open mode
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//! \~russian Открывает содержимое "buffer" с режимом открытия "mode"
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bool open(PIByteArray * buffer, PIIODevice::DeviceMode mode = PIIODevice::ReadWrite);
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//! \~english Open "buffer" content only for read
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//! \~russian Открывает содержимое "buffer" только для чтения
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bool open(const PIByteArray & buffer);
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//! \~english Returns if position is at the end of content
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//! \~russian Возвращает в конце содержимого ли позиция
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bool isEnd() const {if (!data_) return true; return pos >= data_->size_s();}
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//! \~english Move read/write position to "position"
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//! \~russian Перемещает позицию чтения/записи на "position"
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void seek(llong position) {pos = position;}
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//! \~english Move read/write position to the beginning of the buffer
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//! \~russian Перемещает позицию чтения/записи на начало буфера
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void seekToBegin() {if (data_) pos = 0;}
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//! \~english Move read/write position to the end of the buffer
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//! \~russian Перемещает позицию чтения/записи на конец буфера
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void seekToEnd() {if (data_) pos = data_->size_s();}
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//! \~english Insert data "ba" into content at current position
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//! \~russian Вставляет данные "ba" в содержимое буфера в текущую позицию
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int writeByteArray(const PIByteArray & ba);
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protected:
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bool openDevice();
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int readDevice(void * read_to, int size);
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int writeDevice(const void * data_, int size);
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DeviceInfoFlags deviceInfoFlags() const {return PIIODevice::Sequential | PIIODevice::Reliable;}
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ssize_t pos;
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PIByteArray * data_;
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};
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#endif // PIIOBYTEARRAY_H
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