| /* |
| * 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 "ByteArrayInputStream.h" |
| |
| #include <decaf/lang/System.h> |
| |
| using namespace std; |
| using namespace decaf; |
| using namespace decaf::io; |
| using namespace decaf::lang; |
| using namespace decaf::lang::exceptions; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayInputStream::ByteArrayInputStream() : |
| InputStream(), buffer(NULL), size(0), own(false), count(0), pos(0), markpos(0) { |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayInputStream::ByteArrayInputStream(const vector<unsigned char>& buffer) : |
| InputStream(), buffer(NULL), size(0), own(false), count(0), pos(0), markpos(0) { |
| |
| if (buffer.size() > 0) { |
| setByteArray(&buffer[0], (int) buffer.size(), 0, (int) buffer.size()); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayInputStream::ByteArrayInputStream(const unsigned char* buffer, int bufferSize, bool own) : |
| InputStream(), buffer(NULL), size(0), own(own), count(0), pos(0), markpos(0) { |
| |
| setByteArray(buffer, bufferSize, 0, bufferSize); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayInputStream::ByteArrayInputStream(const unsigned char* buffer, int bufferSize, int offset, int length, bool own) : |
| InputStream(), buffer(NULL), size(0), own(own), count(0), pos(0), markpos(0) { |
| |
| setByteArray(buffer, bufferSize, offset, length); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| ByteArrayInputStream::~ByteArrayInputStream() { |
| try { |
| if (this->own) { |
| delete[] this->buffer; |
| } |
| } |
| DECAF_CATCHALL_NOTHROW() |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayInputStream::setByteArray(const vector<unsigned char>& buffer) { |
| if (buffer.size() > 0) { |
| setByteArray(&buffer[0], (int) buffer.size(), 0, (int) buffer.size()); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayInputStream::setByteArray(const unsigned char* buffer, int bufferSize) { |
| setByteArray(buffer, bufferSize, 0, bufferSize); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayInputStream::setByteArray(const unsigned char* buffer, int bufferSize, int offset, int length) { |
| |
| if (buffer == NULL) { |
| throw NullPointerException(__FILE__, __LINE__, "Input Buffer cannot be NULL."); |
| } |
| |
| if (bufferSize < 0) { |
| throw IllegalArgumentException(__FILE__, __LINE__, "Size given for input buffer was negative."); |
| } |
| |
| if (offset < 0) { |
| throw IllegalArgumentException(__FILE__, __LINE__, "Offset given was negative: %d.", offset); |
| } |
| |
| if (length < 0) { |
| throw IllegalArgumentException(__FILE__, __LINE__, "Length given was negative: %d.", offset); |
| } |
| |
| // We're using the default buffer. |
| this->buffer = buffer; |
| this->size = bufferSize; |
| this->pos = offset; |
| this->markpos = offset; |
| this->count = offset + length > bufferSize ? bufferSize : offset + length; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| int ByteArrayInputStream::available() const { |
| return this->count - this->pos; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayInputStream::mark(int readLimit DECAF_UNUSED) { |
| |
| // the reset point is now the marked position until a new byte buffer |
| // is set on this stream. |
| this->markpos = this->pos; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void ByteArrayInputStream::reset() { |
| |
| try { |
| |
| // Begin at the Beginning if mark hasn't been called otherwise it |
| // starts at the marked pos. |
| this->pos = this->markpos; |
| } |
| DECAF_CATCH_RETHROW(IOException) |
| DECAF_CATCHALL_THROW(IOException) |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| int ByteArrayInputStream::doReadByte() { |
| |
| try { |
| return pos < count ? buffer[pos++] : -1; |
| } |
| DECAF_CATCH_RETHROW(IOException) |
| DECAF_CATCHALL_THROW(IOException) |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| int ByteArrayInputStream::doReadArrayBounded(unsigned char* buffer, int size, int offset, int length) { |
| |
| try { |
| |
| if (length == 0) { |
| return 0; |
| } |
| |
| if (buffer == NULL) { |
| throw NullPointerException(__FILE__, __LINE__, "ByteArrayInputStream::read - Buffer passed 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); |
| } |
| |
| if (this->pos >= this->count) { |
| return -1; |
| } |
| |
| int copylen = this->count - this->pos < length ? this->count - this->pos : length; |
| System::arraycopy(this->buffer, this->pos, buffer, offset, copylen); |
| this->pos += copylen; |
| return copylen; |
| } |
| DECAF_CATCH_RETHROW(IOException) |
| DECAF_CATCH_RETHROW(IndexOutOfBoundsException) |
| DECAF_CATCH_RETHROW(NullPointerException) |
| DECAF_CATCHALL_THROW(IOException) |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| long long ByteArrayInputStream::skip(long long num) { |
| |
| try { |
| |
| if (num <= 0) { |
| return 0; |
| } |
| |
| int temp = this->pos; |
| this->pos = this->count - this->pos < num ? this->count : (int) (this->pos + num); |
| return this->pos - temp; |
| } |
| DECAF_CATCH_RETHROW(IOException) |
| DECAF_CATCHALL_THROW(IOException) |
| } |