| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "ByteArrayOutputStream.h" |
| |
| #include <decaf/lang/System.h> |
| |
| #include <algorithm> |
| |
| using namespace std; |
| using namespace decaf; |
| using namespace decaf::io; |
| using namespace decaf::lang; |
| using namespace decaf::lang::exceptions; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayOutputStream::ByteArrayOutputStream() : |
| OutputStream(), buffer(new unsigned char[32]), bufferSize(32), count(0) { |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayOutputStream::ByteArrayOutputStream(int bufferSize) : |
| OutputStream(), buffer(NULL), bufferSize(bufferSize), count(0) { |
| |
| if (bufferSize <= 0) { |
| throw IllegalArgumentException(__FILE__, __LINE__, "Buffer size given was invalid: %d", bufferSize); |
| } |
| |
| this->buffer = new unsigned char[bufferSize]; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayOutputStream::~ByteArrayOutputStream() { |
| try { |
| delete[] buffer; |
| } |
| DECAF_CATCHALL_NOTHROW() |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::pair<unsigned char*, int> ByteArrayOutputStream::toByteArray() const { |
| |
| unsigned char* temp = NULL; |
| |
| if (this->count == 0) { |
| return std::pair<unsigned char*, int>(temp, 0); |
| } |
| |
| temp = new unsigned char[this->count]; |
| System::arraycopy(this->buffer, 0, temp, 0, this->count); |
| |
| return std::make_pair(temp, this->count); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| long long ByteArrayOutputStream::size() const { |
| return this->count; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayOutputStream::reset() { |
| this->count = 0; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayOutputStream::doWriteByte(unsigned char c) { |
| |
| try { |
| |
| if (this->count == this->bufferSize) { |
| checkExpandSize(1); |
| } |
| |
| this->buffer[this->count++] = c; |
| } |
| DECAF_CATCH_RETHROW( IOException) |
| DECAF_CATCHALL_THROW( IOException) |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayOutputStream::doWriteArrayBounded(const unsigned char* buffer, int size, int offset, int length) { |
| |
| if (length == 0) { |
| return; |
| } |
| |
| if (buffer == NULL) { |
| throw NullPointerException(__FILE__, __LINE__, "passed buffer is null"); |
| } |
| |
| if (size < 0) { |
| throw IndexOutOfBoundsException(__FILE__, __LINE__, "size parameter out of Bounds: %d.", size); |
| } |
| |
| if (offset > size || offset < 0) { |
| throw IndexOutOfBoundsException(__FILE__, __LINE__, "offset parameter out of Bounds: %d.", offset); |
| } |
| |
| if (length < 0 || length > size - offset) { |
| throw IndexOutOfBoundsException(__FILE__, __LINE__, "length parameter out of Bounds: %d.", length); |
| } |
| |
| try { |
| |
| checkExpandSize(length); |
| |
| System::arraycopy(buffer, offset, this->buffer, this->count, length); |
| this->count += length; |
| } |
| DECAF_CATCH_RETHROW(IOException) |
| DECAF_CATCH_RETHROW(IndexOutOfBoundsException) |
| DECAF_CATCH_RETHROW(NullPointerException) |
| DECAF_CATCHALL_THROW(IOException) |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::string ByteArrayOutputStream::toString() const { |
| |
| if (this->count == 0) { |
| return ""; |
| } |
| |
| return string((const char*) this->buffer, this->count); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayOutputStream::writeTo(OutputStream* out) const { |
| |
| try { |
| |
| if (this->count == 0) { |
| return; |
| } |
| |
| if (out == NULL) { |
| throw NullPointerException(__FILE__, __LINE__, "Passed stream pointer is null"); |
| } |
| |
| out->write(this->buffer, this->count); |
| } |
| DECAF_CATCH_RETHROW(IOException) |
| DECAF_CATCH_RETHROW(NullPointerException) |
| DECAF_CATCHALL_THROW(IOException) |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayOutputStream::checkExpandSize(int needed) { |
| |
| try { |
| |
| if (this->count + needed <= this->bufferSize) { |
| return; |
| } |
| |
| int newSize = (this->count + needed) * 2; |
| unsigned char* temp = new unsigned char[newSize]; |
| System::arraycopy(this->buffer, 0, temp, 0, this->count); |
| |
| std::swap(temp, this->buffer); |
| |
| this->bufferSize = newSize; |
| |
| delete[] temp; |
| } |
| DECAF_CATCH_RETHROW(IOException) |
| DECAF_CATCH_EXCEPTION_CONVERT(Exception, IOException) |
| DECAF_CATCHALL_THROW(IOException) |
| } |