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annotate deps/Platinum/ThirdParty/Neptune/Source/Core/NptBufferedStreams.h @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Neptune - Buffered Byte Stream
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4 |
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5 | Copyright (c) 2002-2008, Axiomatic Systems, LLC.
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6 | All rights reserved.
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7 |
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8 | Redistribution and use in source and binary forms, with or without
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9 | modification, are permitted provided that the following conditions are met:
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10 | * Redistributions of source code must retain the above copyright
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11 | notice, this list of conditions and the following disclaimer.
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12 | * Redistributions in binary form must reproduce the above copyright
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13 | notice, this list of conditions and the following disclaimer in the
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14 | documentation and/or other materials provided with the distribution.
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15 | * Neither the name of Axiomatic Systems nor the
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16 | names of its contributors may be used to endorse or promote products
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17 | derived from this software without specific prior written permission.
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18 |
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19 | THIS SOFTWARE IS PROVIDED BY AXIOMATIC SYSTEMS ''AS IS'' AND ANY
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20 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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21 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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22 | DISCLAIMED. IN NO EVENT SHALL AXIOMATIC SYSTEMS BE LIABLE FOR ANY
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23 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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24 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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25 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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26 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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27 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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28 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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29 |
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30 ****************************************************************/
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31
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32 #ifndef _NPT_BUFFERED_STREAMS_H_
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33 #define _NPT_BUFFERED_STREAMS_H_
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34
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35 /*----------------------------------------------------------------------
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36 | includes
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37 +---------------------------------------------------------------------*/
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38 #include "NptStreams.h"
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39 #include "NptTypes.h"
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40 #include "NptConstants.h"
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41 #include "NptStrings.h"
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42 #include "NptDebug.h"
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43
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44 /*----------------------------------------------------------------------
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45 | NPT_BufferedStream
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46 +---------------------------------------------------------------------*/
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47 const NPT_Size NPT_BUFFERED_BYTE_STREAM_DEFAULT_SIZE = 4096;
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48
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49 /*----------------------------------------------------------------------
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50 | NPT_BufferedInputStream
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51 +---------------------------------------------------------------------*/
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52 class NPT_BufferedInputStream : public NPT_InputStream
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53 {
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54 public:
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55 // constructors and destructor
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56 NPT_BufferedInputStream(NPT_InputStreamReference& stream,
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57 NPT_Size buffer_size = NPT_BUFFERED_BYTE_STREAM_DEFAULT_SIZE);
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58 virtual ~NPT_BufferedInputStream();
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59
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60 // methods
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61 virtual NPT_Result ReadLine(NPT_String& line,
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62 NPT_Size max_chars = 4096,
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63 bool break_on_cr = false);
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64 virtual NPT_Result ReadLine(char* buffer,
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65 NPT_Size buffer_size,
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66 NPT_Size* chars_read = NULL,
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67 bool break_on_cr = false);
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68 virtual NPT_Result SetBufferSize(NPT_Size size);
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69
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70 // NPT_InputStream methods
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71 NPT_Result Read(void* buffer,
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72 NPT_Size bytes_to_read,
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73 NPT_Size* bytes_read = NULL);
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74 NPT_Result Seek(NPT_Position offset);
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75 NPT_Result Tell(NPT_Position& offset);
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76 NPT_Result GetSize(NPT_LargeSize& size);
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77 NPT_Result GetAvailable(NPT_LargeSize& available);
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78
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79 protected:
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80 // members
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81 NPT_InputStreamReference m_Source;
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82 bool m_SkipNewline;
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83 bool m_Eos;
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84 struct {
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85 NPT_Byte* data;
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86 NPT_Size offset;
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87 NPT_Size valid;
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88 NPT_Size size;
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89 } m_Buffer;
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90
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91 // methods
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92 virtual NPT_Result FillBuffer();
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93 virtual NPT_Result ReleaseBuffer();
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94 };
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95
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96 typedef NPT_Reference<NPT_BufferedInputStream> NPT_BufferedInputStreamReference;
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97
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98 #endif // _NPT_BUFFERED_STREAMS_H_