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132
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1 /*******************************************************************************
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2
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3 copyright: Copyright (c) 2007 Kris Bell. All rights reserved
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4
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5 license: BSD style: $(LICENSE)
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6
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7 version: Jan 2007 : initial release
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8
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9 author: Kris
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10
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11 *******************************************************************************/
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12
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13 module tango.io.protocol.NativeProtocol;
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14
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15 private import tango.io.Buffer;
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16
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17 private import tango.io.protocol.model.IProtocol;
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18
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19 /*******************************************************************************
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20
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21 *******************************************************************************/
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22
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23 class NativeProtocol : IProtocol
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24 {
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25 protected bool prefix_;
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26 protected IBuffer buffer_;
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27
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28 /***********************************************************************
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29
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30 ***********************************************************************/
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31
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32 this (IConduit conduit, bool prefix=true)
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33 {
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34 this.prefix_ = prefix;
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35
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36 auto b = cast(Buffered) conduit;
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37 buffer_ = b ? b.buffer : new Buffer(conduit);
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38 }
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39
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40 /***********************************************************************
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41
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42 ***********************************************************************/
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43
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44 IBuffer buffer ()
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45 {
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46 return buffer_;
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47 }
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48
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49 /***********************************************************************
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50
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51 ***********************************************************************/
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52
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53 void[] read (void* dst, uint bytes, Type type)
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54 {
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55 return buffer_.readExact (dst, bytes);
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56 }
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57
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58 /***********************************************************************
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59
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60 ***********************************************************************/
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61
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62 void write (void* src, uint bytes, Type type)
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63 {
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64 buffer_.append (src, bytes);
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65 }
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66
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67 /***********************************************************************
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68
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69 ***********************************************************************/
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70
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71 void[] readArray (void* dst, uint bytes, Type type, Allocator alloc)
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72 {
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73 if (prefix_)
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74 {
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75 read (&bytes, bytes.sizeof, Type.UInt);
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76 return alloc (&read, bytes, type);
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77 }
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78
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79 return read (dst, bytes, type);
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80 }
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81
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82 /***********************************************************************
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83
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84 ***********************************************************************/
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85
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86 void writeArray (void* src, uint bytes, Type type)
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87 {
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88 if (prefix_)
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89 write (&bytes, bytes.sizeof, Type.UInt);
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90
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91 write (src, bytes, type);
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92 }
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93 }
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94
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95
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96
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97 /*******************************************************************************
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98
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99 *******************************************************************************/
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100
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101 debug (UnitTest)
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102 {
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103 import tango.io.Buffer;
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104 import tango.io.protocol.Writer;
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105 import tango.io.protocol.Reader;
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106 import tango.io.protocol.NativeProtocol;
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107
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108 unittest
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109 {
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110 auto protocol = new NativeProtocol (new Buffer(32));
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111 auto input = new Reader (protocol);
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112 auto output = new Writer (protocol);
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113
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114 char[] foo;
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115 output ("testing testing 123"c);
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116 input (foo);
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117 assert (foo == "testing testing 123");
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118 }
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119 }
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120
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121 |
