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<div id="projectname">Gamedev Framework (gf)
 <span id="projectnumber">0.6.0</span>
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<div id="projectbrief">A C++11 framework for 2D games</div>
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<div class="title">InputStream.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Gamedev Framework (gf)</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (C) 2016-2017 Julien Bernard</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This software is provided 'as-is', without any express or implied</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * warranty. In no event will the authors be held liable for any damages</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * arising from the use of this software.</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * Permission is granted to anyone to use this software for any purpose,</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * including commercial applications, and to alter it and redistribute it</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * freely, subject to the following restrictions:</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * 1. The origin of this software must not be misrepresented; you must not</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * claim that you wrote the original software. If you use this software</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * in a product, an acknowledgment in the product documentation would be</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * appreciated but is not required.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * 2. Altered source versions must be plainly marked as such, and must not be</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * misrepresented as being the original software.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * 3. This notice may not be removed or altered from any source distribution.</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> *</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * Part of this file comes from SFML, with the same license:</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * Copyright (C) 2007-2015 Laurent Gomila ([email protected])</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#</span><span class="preprocessor">ifndef</span> <span class="preprocessor">GF_INPUT_STREAM_H</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#</span><span class="preprocessor">define</span> <span class="preprocessor">GF_INPUT_STREAM_H</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#</span><span class="preprocessor">include</span> <span class="preprocessor"><</span><span class="preprocessor">cstddef</span><span class="preprocessor">></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#</span><span class="preprocessor">include</span> <a class="code" href="_portability_8h.html">"Portability.h"</a></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">namespace</span> <a class="code" href="namespacegf.html">gf</a> {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#</span><span class="preprocessor">ifndef</span> <span class="preprocessor">DOXYGEN_SHOULD_SKIP_THIS</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">inline</span> <span class="keyword">namespace</span> v1 {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#</span><span class="preprocessor">endif</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="comment">/**</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * @ingroup core</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * @brief Abstract class for custom file input streams</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> *</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * This class allows users to define their own file input sources from</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * which Gamedev Framework can load resources.</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> *</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * Gamedev Framework resource classes like gf::Texture and gf::Shader</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * provide `loadFromFile()` and `loadFromMemory()` functions, which read</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * data from conventional sources. However, if you have data coming from</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * a different source (over a network, embedded, encrypted, compressed,</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * etc) you can derive your own class from gf::InputStream and load SFML</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * resources with their `loadFromStream()` function.</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> *</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> */</span></div><div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="classgf_1_1_input_stream.html"> 51</a></span>  <span class="keyword">class</span> <a class="code" href="_portability_8h.html#a0169111e0ff1d9fe0f23dee89e904d57">GF_API</a> <a class="code" href="classgf_1_1_input_stream.html">InputStream</a> {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">/**</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * @brief Default constructor</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> */</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classgf_1_1_input_stream.html#acd2fb7a2b818da4b5272af4d94798316">InputStream</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">/**</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * @brief Deleted copy constructor</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> */</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="classgf_1_1_input_stream.html#aab58620305c53a2806975e61bcba5101">InputStream</a>(<span class="keyword">const</span> <a class="code" href="classgf_1_1_input_stream.html">InputStream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">/**</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> * @brief Deleted copy assignment</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> */</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="classgf_1_1_input_stream.html">InputStream</a>& <a class="code" href="classgf_1_1_input_stream.html#afe446bb2a0fad563352fa25eb9c3eb21">operator</a>=(<span class="keyword">const</span> <a class="code" href="classgf_1_1_input_stream.html">InputStream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">/**</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * @brief Destructor</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> */</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">virtual</span> ~<a class="code" href="classgf_1_1_input_stream.html#a36008267c17d67733ddab113378c263a">InputStream</a>();</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">/**</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * @brief Read data from the stream</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> *</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> * After reading, the stream's reading position must be</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * advanced by the amount of bytes read.</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> *</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> * @param data Buffer where to copy the read data</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> * @param size Desired number of bytes to read</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> *</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * @return The number of bytes actually read</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> */</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">virtual</span> std::size_t <a class="code" href="classgf_1_1_input_stream.html#ac44463f69ba794fe40a78fdc6cfc2559">read</a>(<span class="keywordtype">void</span>* data, std::size_t size) = 0;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">/**</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> * @brief Change the current reading position</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> *</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> * @param position The position to seek to, from the beginning</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> *</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * @return The position actually sought to</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> */</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">virtual</span> <span class="keywordtype">long</span> <a class="code" href="classgf_1_1_input_stream.html#a919a3dd478126dceaab913b5ed596e6f">seek</a>(<span class="keywordtype">long</span> position) = 0;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">/**</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> * @brief Get the current reading position in the stream</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> *</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * @return The current position</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> */</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">virtual</span> <span class="keywordtype">long</span> <a class="code" href="classgf_1_1_input_stream.html#add7bc9c5eed9d0937b01715a2ca0de5b">tell</a>() = 0;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">/**</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> * @brief Return the size of the stream</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> *</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> * @return The total number of bytes available in the stream</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> */</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">virtual</span> std::size_t <a class="code" href="classgf_1_1_input_stream.html#a5778d908d8432613675de0b8bda4708a">getSize</a>() = 0;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  };</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#</span><span class="preprocessor">ifndef</span> <span class="preprocessor">DOXYGEN_SHOULD_SKIP_THIS</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#</span><span class="preprocessor">endif</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> }</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor">#</span><span class="preprocessor">endif</span> <span class="comment">// GF_INPUT_STREAM_H</span></div><div class="ttc" id="classgf_1_1_input_stream_html_add7bc9c5eed9d0937b01715a2ca0de5b"><div class="ttname"><a href="classgf_1_1_input_stream.html#add7bc9c5eed9d0937b01715a2ca0de5b">gf::InputStream::tell</a></div><div class="ttdeci">virtual long tell()=0</div><div class="ttdoc">Get the current reading position in the stream. </div></div>
<div class="ttc" id="classgf_1_1_input_stream_html_afe446bb2a0fad563352fa25eb9c3eb21"><div class="ttname"><a href="classgf_1_1_input_stream.html#afe446bb2a0fad563352fa25eb9c3eb21">gf::InputStream::operator=</a></div><div class="ttdeci">InputStream & operator=(const InputStream &)=delete</div><div class="ttdoc">Deleted copy assignment. </div></div>
<div class="ttc" id="classgf_1_1_input_stream_html_acd2fb7a2b818da4b5272af4d94798316"><div class="ttname"><a href="classgf_1_1_input_stream.html#acd2fb7a2b818da4b5272af4d94798316">gf::InputStream::InputStream</a></div><div class="ttdeci">InputStream()=default</div><div class="ttdoc">Default constructor. </div></div>
<div class="ttc" id="namespacegf_html"><div class="ttname"><a href="namespacegf.html">gf</a></div><div class="ttdoc">The namespace for gf classes. </div><div class="ttdef"><b>Definition:</b> Action.h:34</div></div>
<div class="ttc" id="classgf_1_1_input_stream_html"><div class="ttname"><a href="classgf_1_1_input_stream.html">gf::InputStream</a></div><div class="ttdoc">Abstract class for custom file input streams. </div><div class="ttdef"><b>Definition:</b> InputStream.h:51</div></div>
<div class="ttc" id="classgf_1_1_input_stream_html_ac44463f69ba794fe40a78fdc6cfc2559"><div class="ttname"><a href="classgf_1_1_input_stream.html#ac44463f69ba794fe40a78fdc6cfc2559">gf::InputStream::read</a></div><div class="ttdeci">virtual std::size_t read(void *data, std::size_t size)=0</div><div class="ttdoc">Read data from the stream. </div></div>
<div class="ttc" id="classgf_1_1_input_stream_html_a5778d908d8432613675de0b8bda4708a"><div class="ttname"><a href="classgf_1_1_input_stream.html#a5778d908d8432613675de0b8bda4708a">gf::InputStream::getSize</a></div><div class="ttdeci">virtual std::size_t getSize()=0</div><div class="ttdoc">Return the size of the stream. </div></div>
<div class="ttc" id="classgf_1_1_input_stream_html_a36008267c17d67733ddab113378c263a"><div class="ttname"><a href="classgf_1_1_input_stream.html#a36008267c17d67733ddab113378c263a">gf::InputStream::~InputStream</a></div><div class="ttdeci">virtual ~InputStream()</div><div class="ttdoc">Destructor. </div></div>
<div class="ttc" id="_portability_8h_html_a0169111e0ff1d9fe0f23dee89e904d57"><div class="ttname"><a href="_portability_8h.html#a0169111e0ff1d9fe0f23dee89e904d57">GF_API</a></div><div class="ttdeci">#define GF_API</div><div class="ttdef"><b>Definition:</b> Portability.h:35</div></div>
<div class="ttc" id="classgf_1_1_input_stream_html_aab58620305c53a2806975e61bcba5101"><div class="ttname"><a href="classgf_1_1_input_stream.html#aab58620305c53a2806975e61bcba5101">gf::InputStream::InputStream</a></div><div class="ttdeci">InputStream(const InputStream &)=delete</div><div class="ttdoc">Deleted copy constructor. </div></div>
<div class="ttc" id="classgf_1_1_input_stream_html_a919a3dd478126dceaab913b5ed596e6f"><div class="ttname"><a href="classgf_1_1_input_stream.html#a919a3dd478126dceaab913b5ed596e6f">gf::InputStream::seek</a></div><div class="ttdeci">virtual long seek(long position)=0</div><div class="ttdoc">Change the current reading position. </div></div>
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