1 /*
2  * CustomBinaryInputPort.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: CustomBinaryInputPort.h 261 2008-07-25 06:16:44Z higepon $
30  */
31 
32 #ifndef SCHEME_CUSTOM_BINARY_INPUT_PORT_
33 #define SCHEME_CUSTOM_BINARY_INPUT_PORT_
34 
35 #include "BinaryInputPort.h"
36 
37 namespace scheme {
38 
39 class CustomBinaryInputPort : public BinaryInputPort
40 {
41 public:
42     CustomBinaryInputPort(VM* theVM, const ucs4string& id, Object readProc, Object getPositionProc, Object setPositionProc, Object closeProc);
43     virtual ~CustomBinaryInputPort();
44 
45     int getU8();
46     int lookaheadU8();
47     int64_t readBytes(uint8_t* buf, int64_t reqSize, bool& isErrorOccured);
48     int64_t readSome(uint8_t** buf, bool& isErrorOccured);
49     int64_t readAll(uint8_t** buf, bool& isErrorOccured);
50     ucs4string toString();
51     int open();
52     int close();
53     int pseudoClose();
54     bool isClosed() const;
55     bool hasPosition() const;
56     bool hasSetPosition() const;
57     Object position() const;
58     bool setPosition(int64_t position);
getFile()59     File* getFile() { return NULL; }
getLastErrorMessage()60     ucs4string getLastErrorMessage()
61     {
62         return UC("");
63     }
64 
65 private:
66     bool hasAheadU8() const;
67 
68     VM* theVM_;
69     const ucs4string id_;
70     const Object readProc_;
71     const Object getPositionProc_;
72     const Object setPositionProc_;
73     const Object closeProc_;
74 
75     bool isClosed_;
76     bool isPseudoClosed_;
77     int aheadU8_;
78 };
79 
80 } // namespace scheme
81 
82 #endif // SCHEME_CUSTOM_BINARY_INPUT_PORT_
83