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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/* $NoKeywords: $ */</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// Copyright (c) 1993-2012 Robert McNeel &amp; Associates. All rights reserved.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// McNeel &amp; Associates.</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">// THIS SOFTWARE IS PROVIDED &quot;AS IS&quot; WITHOUT EXPRESS OR IMPLIED WARRANTY.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// MERCHANTABILITY ARE HEREBY DISCLAIMED.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// </span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// For complete openNURBS copyright information see &lt;http://www.opennurbs.org&gt;.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">//</span><span class="comment"></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment">////////////////////////////////////////////////////////////////</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"></span>*/</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#if !defined(OPENNURBS_BASE64_INC_)</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#define OPENNURBS_BASE64_INC_</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment">//////////////////////////////////////////////////////////////////////////////////////////</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="../../d8/d05/class_o_n___base64_encode_stream.html"> 22</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;{</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <a class="code" href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a>();</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="keyword">virtual</span> ~<a class="code" href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a>();</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment"> ON_Base64EncodeStream delivers the base64 encoded stream by</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment"> calling a base64 encoded stream output handler function. </span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment"> There are two options for specifying the base64 encoded stream</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment"> output handler function.</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment"> 1. Overriding the virtual Out() function.</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment"> 2. Providing a callback function.</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment"> SetCallback() is used to specify a callback function to handle</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment"> the base64 encoded stream and to specify a context pointer to be </span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment"> passed to either option of the handler.</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="comment"> callback_function - [in]</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment"> Function to handle sections of the base64 encoded stream.</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment"> If callback_function is null, then the virtual Out() </span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment"> function will be called. When callback_function </span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment"> is specified, it must return true if the base64 encoding </span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="comment"> calculation should continue and false to cancel the </span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="comment"> base64 encoding calculation.</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="comment"> callback_context - [in]</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="comment"> This value is passed as the first argument when calling </span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="comment"> callback_function or the virutal Out() function.</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment"> True if successful.</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment"> Once base64 encoding has started, it would be unusual to</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment"> intentionally change the base64 encoded stream output handler,</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment"> but you can do this if you need to. </span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordtype">bool</span> SetCallback( </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; ON_StreamCallbackFunction callback_function,</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordtype">void</span>* callback_context</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; );</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment"> Current value of the callback function for handling</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment"> the base64 encoded stream. If the callback function is</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment"> null, the the virtual Out() function is used to</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment"> handle the output stream.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; ON_StreamCallbackFunction CallbackFunction() <span class="keyword">const</span>;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"> Current value of the context pointer passed as the first</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment"> argument to the base64 encoded stream output handler function.</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordtype">void</span>* CallbackContext() <span class="keyword">const</span>;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment"> Call Begin() one time to initialize the base64 encoding</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment"> calculation. Then call In() one or more times </span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment"> to submit the unencoded stream to the base64 encoding</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment"> calculation. When you reach the end of the unencoded</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="comment"> stream, call End().</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment"> true if successful, false if an error occured.</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordtype">bool</span> Begin();</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment"> Call In() one or more times to base64 encode a stream of bytes.</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment"> After the last call to In(), call End(). Calling In() will</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment"> result in at least in_buffer_size/57 and at most </span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment"> (in_buffer_size+56)/57 calls to to the output stream handler.</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment"> in_buffer_size - [in]</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment"> number of bytes in in_buffer</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment"> in_buffer - [in]</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="comment"> true if successful, false if an error occured.</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordtype">bool</span> In(</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; ON__UINT64 in_buffer_size,</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keyword">const</span> <span class="keywordtype">void</span>* in_buffer</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; );</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="comment"> If an explicit base 64 encoded stream output handler is not</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="comment"> specified ( CallbackFunction() returns null ), then the </span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="comment"> virtual Out() function is called to handle the base 64 encoded</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="comment"> output stream. As the input stream is encoded, one or more</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment"> calls to Out() will occur.</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="comment"> With a possible exception of the last call to Out(), when Out()</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="comment"> is called, 57 input bytes have been encoded into 76 output </span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="comment"> characters with ASCII codes A-Z, a-z, 0-9, +, /.</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="comment"> callback_context - [in]</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="comment"> context pointer set by calling SetCallback(). Typically</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="comment"> the context pointer is not used by a virtual override</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="comment"> because the context can be added as member variables</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment"> of the derived class, but it is available if needed.</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment"> out_buffer_size - [in]</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="comment"> number of non-null characters in out_buffer.</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="comment"> out_buffer - [in]</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment"> A null terminated ASCII string that is a base 64 encoding.</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="comment"> out_buffer[0...(out_buffer_size-1)] are ASCII characters with</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment"> values characters with ASCII codes A-Z, a-z, 0-9, +, /</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment"> and out_buffer[out_buffer_size] = 0. </span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment"> True to continue base 64 encodeing and false to cancel the</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="comment"> encoding calculation.</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">bool</span> Out( </div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keywordtype">void</span>* callback_context, </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; ON__UINT32 out_buffer_size, </div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keyword">const</span> <span class="keywordtype">char</span>* out_buffer </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; );</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="comment"> After the last call to In(), call End(). Calling End() may</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="comment"> generate one call to the output stream handler with the value</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="comment"> of out_buffer_size = 4 to 76.</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="comment"> true if successful, false if an error occured.</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keywordtype">bool</span> End();</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; </div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="comment"> Then the returned value is the total number bytes in the input</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="comment"> stream. The size is updated every time In() is called before </span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="comment"> any calls are made to the output stream handler. If the </span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="comment"> calculation is finished ( End() has been called ), then the</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="comment"> returned value is the total number of bytes in the entire </span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="comment"> input stream.</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; ON__UINT64 InSize() <span class="keyword">const</span>;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment"> Then the returned value is the total number characters in the</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment"> output stream. The size is incremented immediately after each</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="comment"> call to the output stream handler. If the base64 encoding</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="comment"> calculation is finished ( End() has been called ), then the</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="comment"> returned value is the total number of bytes in the entire </span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="comment"> output stream.</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; ON__UINT64 OutSize() <span class="keyword">const</span>;</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="comment"> Then the returned value is the 32-bit crc of the input stream.</span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="comment"> The crc is updated every time In() is called before any calls</span></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="comment"> are made to the output stream handler. If the base64 encoding </span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;<span class="comment"> calculation is finished ( End() has been called ), then the</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<span class="comment"> returned value is the 32-bit crc of the entire input stream.</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; ON__UINT32 InCRC() <span class="keyword">const</span>;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;<span class="comment"> Then the returned value is the 32bit crc of the output stream.</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="comment"> The crc is updated immediately after each call to the output</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160;<span class="comment"> stream handler. If the calculation is finished ( End() has </span></div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;<span class="comment"> been called ), then the returned value is the 32-bit crc of</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;<span class="comment"> the entire output stream.</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; ON__UINT32 OutCRC() <span class="keyword">const</span>;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; </div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; ON_StreamCallbackFunction m_out_callback_function;</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="keywordtype">void</span>* m_out_callback_context;</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; ON__UINT64 m_in_size;</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; ON__UINT64 m_out_size;</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; ON__UINT32 m_in_crc;</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; ON__UINT32 m_out_crc;</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keywordtype">void</span>* m_implementation;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keywordtype">void</span>* m_reserved;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; <span class="keywordtype">void</span> ErrorHandler();</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; </div><div class="line"><a name="l00207"></a><span class="lineno"><a class="line" href="../../d5/db3/class_o_n___decode_base64.html"> 207</a></span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="comment">// prohibit use - no implementation</span></div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <a class="code" href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a>(<span class="keyword">const</span> <a class="code" href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a>&amp;);</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <a class="code" href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a>&amp;);</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;};</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;<span class="comment">//////////////////////////////////////////////////////////////////////////////////////////</span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="../../d5/db3/class_o_n___decode_base64.html">ON_DecodeBase64</a></div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;{</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; <a class="code" href="../../d5/db3/class_o_n___decode_base64.html">ON_DecodeBase64</a>();</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keyword">virtual</span> ~<a class="code" href="../../d5/db3/class_o_n___decode_base64.html">ON_DecodeBase64</a>();</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordtype">void</span> Begin();</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="comment">// Decode will generate zero or more callbacks to the</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="comment">// virtual Output() function. If the base 64 encoded information</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; <span class="comment">// is in pieces, you can call Decode() for each piece. For example,</span></div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; <span class="comment">// if your encoded information is in a text file, you might call</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="comment">// Decode() for every line in the file. Decode() returns 0 if</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; <span class="comment">// there is nothing in base64str to decode or if it detects an</span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="comment">// error that prevents any further decoding. The function Error()</span></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <span class="comment">// can be used to determine if an error occured. Otherwise,</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; <span class="comment">// Decode() returns a pointer to the location in the string where</span></div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="comment">// it stopped decoding because it detected a character, like a null</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="comment">// terminator, an end of line character, or any other character</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; <span class="comment">// that could not be part of the base 64 encoded information.</span></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; <span class="keyword">const</span> <span class="keywordtype">char</span>* Decode(<span class="keyword">const</span> <span class="keywordtype">char</span>* base64str);</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keyword">const</span> <span class="keywordtype">char</span>* Decode(<span class="keyword">const</span> <span class="keywordtype">char</span>* base64str, <span class="keywordtype">size_t</span> base64str_count);</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* Decode(<span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* base64str);</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; <span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* Decode(<span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* base64str, <span class="keywordtype">size_t</span> base64str_count);</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; <span class="comment">// You must call End() when Decode() returns 0 or when you have</span></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="comment">// reached the end of your encoded information. End() may</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="comment">// callback to Output() zero or one time. If all the information</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="comment">// passed to Decode() was successfully decoded, then End()</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="comment">// returns true. If something was not decoded, then End()</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="comment">// returns false.</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="keywordtype">bool</span> End();</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160;</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <span class="comment">// Override the virtual Output() callback function to process the </span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="comment">// decoded output. Each time Output() is called there are m_output_count</span></div><div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="../../d5/db3/class_o_n___decode_base64.html#ac0fc71e4034240f5190e26a998ad2f0b"> 250</a></span>&#160; <span class="comment">// bytes in the m_output[] array.</span></div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="comment">// Every call to Decode() can result in zero, one, or many callbacks</span></div><div class="line"><a name="l00252"></a><span class="lineno"><a class="line" href="../../d5/db3/class_o_n___decode_base64.html#a7d524fe2fd44ec635ba538972e7efc5e"> 252</a></span>&#160; <span class="comment">// to Output(). Calling End() may result in zero or one callbacks</span></div><div class="line"><a name="l00253"></a><span class="lineno"><a class="line" href="../../d5/db3/class_o_n___decode_base64.html#a90ca346028a45ef87add7871b871a97e"> 253</a></span>&#160; <span class="comment">// to Output().</span></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">void</span> Output();</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160;</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; <span class="comment">// m_decode_count = total number of input base64 characters</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="comment">// that Decode() has decoded.</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> m_decode_count; </div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; <span class="keywordtype">int</span> m_output_count; <span class="comment">// 0 to 512</span></div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> m_output[512];</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; <span class="comment">// Call if your Output() function detects an error and</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; <span class="comment">// wants to stop further decoding.</span></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; <span class="keywordtype">void</span> SetError();</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <span class="comment">// Returns true if an error occured during decoding because</span></div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="comment">// invalid input was passed to Decode().</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="keyword">const</span> <span class="keywordtype">bool</span> Error() <span class="keyword">const</span>;</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160;</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordtype">int</span> m_status; <span class="comment">// 1: error - decoding stopped</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="comment">// 2: &#39;=&#39; encountered as 3rd char in Decode()</span></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; <span class="comment">// 3: successfully parsed &quot;**==&quot;</span></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="comment">// 4: successfully parsed &quot;***=&quot;</span></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; <span class="comment">// 5: End() successfully called.</span></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160;</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <span class="comment">// cached encoded input from previous call to Decode() </span></div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; <span class="keywordtype">int</span> m_cache_count;</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; <span class="keywordtype">int</span> m_cache[4];</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160;</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="keywordtype">void</span> DecodeHelper1(); <span class="comment">// decodes &quot;**==&quot; quartet into 1 byte</span></div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keywordtype">void</span> DecodeHelper2(); <span class="comment">// decodes &quot;***=&quot; quartet into 2 bytes</span></div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160;};</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160;</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160;<span class="comment">/////////////////////////////////////////////////////////////////////</span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;<span class="comment">class ON_CLASS ON_EncodeBase64</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160;<span class="comment">{</span></div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160;<span class="comment">public:</span></div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160;<span class="comment"> ON_EncodeBase64();</span></div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160;<span class="comment"> virtual ~ON_EncodeBase64();</span></div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160;<span class="comment"> void Begin();</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160;<span class="comment"> // Calling Encode will generate at least</span></div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160;<span class="comment"> // sizeof_buffer/57 and at most (sizeof_buffer+56)/57</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160;<span class="comment"> // calls to Output(). Every callback to Output() will</span></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160;<span class="comment"> // have m_output_count = 76.</span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160;<span class="comment"> void Encode(const void* buffer, size_t sizeof_buffer);</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160;<span class="comment"> // Calling End may generate a single call to Output()</span></div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160;<span class="comment"> // If it does generate a single call to Output(),</span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160;<span class="comment"> // then m_output_count will be between 1 and 76.</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160;<span class="comment"> void End(); // may generate a single call to Output().</span></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160;<span class="comment"> // With a single exception, when Output() is called,</span></div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160;<span class="comment"> // 57 input bytes have been encoded into 76 output</span></div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160;<span class="comment"> // characters with ASCII codes A-Z, a-z, 0-9, +, /.</span></div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160;<span class="comment"> // m_output_count will be 76</span></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;<span class="comment"> // m_output[0...(m_output_count-1)] will be the base 64</span></div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160;<span class="comment"> // encoding.</span></div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160;<span class="comment"> // m_output[m_output_count] = 0.</span></div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160;<span class="comment"> // The Output() function can modify the values of m_output[]</span></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160;<span class="comment"> // and m_output_count anyway it wants.</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160;<span class="comment"> virtual void Output();</span></div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160;<span class="comment"> // Total number of bytes passed to Encode().</span></div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160;<span class="comment"> int m_encode_count;</span></div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160;<span class="comment"> // When the virtual Output() is called, there are m_output_count (1 to 76)</span></div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;<span class="comment"> // characters of base64 encoded output in m_output[]. The remainder of </span></div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160;<span class="comment"> // the m_output[] array is zero. The Output function may modify the</span></div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160;<span class="comment"> // contents of m_output[] any way it sees fit.</span></div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160;<span class="comment"> int m_output_count;</span></div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160;<span class="comment"> char m_output[80];</span></div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160;<span class="comment"> </span></div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160;<span class="comment">private:</span></div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160;<span class="comment"> // input waiting to be encoded</span></div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160;<span class="comment"> // At most 56 bytes can be waiting to be processed in m_input[].</span></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160;<span class="comment"> unsigned int m_unused2; // Here for alignment purposes. Never used by opennurbs.</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160;<span class="comment"> unsigned int m_input_count;</span></div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160;<span class="comment"> unsigned char m_input[64];</span></div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160;<span class="comment"> void EncodeHelper1(const unsigned char*, char*);</span></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160;<span class="comment"> void EncodeHelper2(const unsigned char*, char*);</span></div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160;<span class="comment"> void EncodeHelper3(const unsigned char*, char*);</span></div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160;<span class="comment"> void EncodeHelper57(const unsigned char*);</span></div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160;<span class="comment">};</span></div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160;</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="class_o_n___base64_encode_stream_html"><div class="ttname"><a href="../../d8/d05/class_o_n___base64_encode_stream.html">ON_Base64EncodeStream</a></div><div class="ttdef"><b>Definition:</b> opennurbs_base64.h:22</div></div>
<div class="ttc" id="class_o_n___decode_base64_html"><div class="ttname"><a href="../../d5/db3/class_o_n___decode_base64.html">ON_DecodeBase64</a></div><div class="ttdef"><b>Definition:</b> opennurbs_base64.h:207</div></div>
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