git-svn-id: svn://db.shs.com.ru/pip@632 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5

src_main/io_devices/piiobytearray.cpp

@@ -0,0 +1,95 @@
+/*
+    PIP - Platform Independent Primitives
+    PIIODevice wrapper around PIByteArray
+    Copyright (C) 2018  Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "piiobytearray.h"
+
+
+/*! \class PIIOByteArray
+ * \brief PIIODevice wrapper around PIByteArray
+ * 
+ * \section  PIIOByteArray_sec0 Synopsis
+ * This class sllow you to use PIByteArray as PIIODevice and pass it to, e.g. PIConfig
+ */
+
+//REGISTER_DEVICE(PIIOByteArray);
+
+
+PIIOByteArray::PIIOByteArray(PIByteArray *buffer, PIIODevice::DeviceMode mode) {
+	open(buffer, mode);
+}
+
+
+PIIOByteArray::PIIOByteArray(const PIByteArray &buffer) {
+	open(buffer);
+}
+
+
+bool PIIOByteArray::open(PIByteArray *buffer, PIIODevice::DeviceMode mode) {
+	data_ = buffer;
+	mode_ = mode;
+	return PIIODevice::open(mode);
+}
+
+
+bool PIIOByteArray::open(const PIByteArray &buffer) {
+	data_ = const_cast<PIByteArray*>(&buffer);
+	mode_ = PIIODevice::ReadOnly;
+	return PIIODevice::open(PIIODevice::ReadOnly);
+}
+
+
+int PIIOByteArray::readDevice(void * read_to, int size) {
+//	piCout << "PIIOByteArray::read" << data_ << size << canRead();
+	if (!canRead() || !data_) return -1;
+	int ret = piMini(size, data_->size_s() - pos);
+	if (ret <= 0) return -1;
+	memcpy(read_to, data_->data(pos), ret);
+//	piCout << "readed" << ret;
+	pos += size;
+	if (pos > data_->size_s()) pos = data_->size_s();
+	return ret;
+}
+
+
+int PIIOByteArray::writeDevice(const void * data, int size) {
+//	piCout << "PIIOByteArray::write" << data << size << canWrite();
+	if (!canWrite() || !data) return -1;
+	//piCout << "write" << data;
+	if (pos > data_->size_s()) pos = data_->size_s();
+	PIByteArray rs = PIByteArray(data, size);
+//	piCoutObj << rs;
+	data_->insert(pos, rs);
+	pos += rs.size_s();
+	return rs.size_s();
+}
+
+
+int PIIOByteArray::writeByteArray(const PIByteArray &ba) {
+	if (!canWrite() || !data_) return -1;
+	if (pos > data_->size_s()) pos = data_->size_s();
+	data_->insert(pos, ba);
+	pos += ba.size_s();
+	return ba.size_s();
+}
+
+
+bool PIIOByteArray::openDevice() {
+	pos = 0;
+	return (data_ != 0);
+}