1 /* 2 * ByteArrayBinaryInputPort.h - 3 * 4 * Copyright (c) 2008 Higepon(Taro Minowa) <higepon@users.sourceforge.jp> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 25 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $Id: ByteArrayBinaryInputPort.h 261 2008-07-25 06:16:44Z higepon $ 30 */ 31 32 #ifndef SCHEME_BYTE_ARRAY_BINARY_INPUT_PORT_ 33 #define SCHEME_BYTE_ARRAY_BINARY_INPUT_PORT_ 34 35 #include <stdio.h> // EOF 36 #include "BinaryInputPort.h" 37 38 namespace scheme { 39 40 class ByteArrayBinaryInputPort : public BinaryInputPort 41 { 42 public: 43 ByteArrayBinaryInputPort(const uint8_t* buf, int64_t size); 44 ~ByteArrayBinaryInputPort(); 45 46 // profiler tells that this should be inlined getU8()47 inline int getU8() 48 { 49 if (index_ >= size_) return EOF; 50 return buf_[index_++]; 51 } 52 lookaheadU8()53 inline int lookaheadU8() 54 { 55 if (index_ >= size_) return EOF; 56 return buf_[index_]; 57 } 58 59 ucs4string toString(); 60 int64_t readBytes(uint8_t* buf, int64_t reqSize, bool& isErrorOccured); 61 int64_t readSome(uint8_t** buf, bool& isErrorOccured); 62 int64_t readAll(uint8_t** buf, bool& isErrorOccured); 63 int open(); 64 int close(); 65 bool isClosed() const; 66 int pseudoClose(); hasPosition()67 bool hasPosition() const { return true; } hasSetPosition()68 bool hasSetPosition() const { return true; } 69 Object position() const; 70 File* getFile(); setPosition(int64_t position)71 bool setPosition(int64_t position) 72 { 73 if (size_ == 0 && position == 0) { 74 return true; 75 } else if (position > size_) { 76 return false; 77 } else { 78 index_ = position; 79 return true; 80 } 81 } getLastErrorMessage()82 ucs4string getLastErrorMessage() 83 { 84 return UC(""); 85 } 86 87 88 private: 89 const uint8_t* const buf_; 90 const int64_t size_; 91 int64_t index_; 92 bool isClosed_; 93 bool isPseudoClosed_; 94 }; 95 96 } // namespace scheme 97 98 #endif // SCHEME_BYTE_ARRAY_BINARY_INPUT_PORT_ 99