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<div id="projectbrief">Additional custom or not Standard C++ covered algorithms</div>
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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_fca3c47b2ea228727bd6729832f89576.html">stdex</a></li> </ul>
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<div class="headertitle"><div class="title">zlib.hpp</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> SPDX-License-Identifier: MIT</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> Copyright © 2016-2024 Amebis</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">*/</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> </div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include "compat.hpp"</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include "stream.hpp"</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#if _MSC_VER</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include <CodeAnalysis/Warnings.h></span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#pragma warning(push)</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#pragma warning(disable: ALL_CODE_ANALYSIS_WARNINGS)</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <zlib.h></span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#if _MSC_VER</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#pragma warning(pop)</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <memory></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <stdexcept></span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="keyword">namespace </span>stdex</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span>{</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> throw_on_zlib_error(<span class="keywordtype">int</span> result)</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> {</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keywordflow">if</span> (result >= 0)</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="keywordflow">switch</span> (result) {</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="keywordflow">case</span> Z_ERRNO: <span class="keywordflow">throw</span> std::system_error(errno, std::system_category(), <span class="stringliteral">"zlib failed with errno"</span>);</div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keywordflow">case</span> Z_STREAM_ERROR: <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"zlib stream error"</span>);</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keywordflow">case</span> Z_DATA_ERROR: <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"zlib data error"</span>);</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="keywordflow">case</span> Z_MEM_ERROR: <span class="keywordflow">throw</span> std::bad_alloc();</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keywordflow">case</span> Z_BUF_ERROR: <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"zlib buffer error"</span>);</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordflow">case</span> Z_VERSION_ERROR: <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"zlib version error"</span>);</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordflow">default</span>: <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"zlib unknown error"</span>);</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> }</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> }</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="foldopen" id="foldopen00044" data-start="{" data-end="};">
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||
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"><a class="line" href="classstdex_1_1zlib__writer.html"> 44</a></span> <span class="keyword">class </span><a class="code hl_class" href="classstdex_1_1zlib__writer.html">zlib_writer</a> : <span class="keyword">public</span> <a class="code hl_class" href="classstdex_1_1stream_1_1converter.html">stdex::stream::converter</a></div>
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||
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> {</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_class" href="classstdex_1_1zlib__writer.html">zlib_writer</a>(_Inout_ <a class="code hl_class" href="classstdex_1_1stream_1_1basic.html">stdex::stream::basic</a>& source, _In_ <span class="keywordtype">int</span> compression_level = Z_BEST_COMPRESSION, _In_ uInt block_size = 0x10000) :</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_class" href="classstdex_1_1stream_1_1converter.html">stdex::stream::converter</a>(source),</div>
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||
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> m_block_size(block_size),</div>
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||
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> m_block(<span class="keyword">new</span> Byte[block_size])</div>
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||
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> {</div>
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||
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> memset(&m_zlib, 0, <span class="keyword">sizeof</span>(m_zlib));</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> throw_on_zlib_error(deflateInit(&m_zlib, compression_level));</div>
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||
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> }</div>
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||
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
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||
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">virtual</span> <a class="code hl_class" href="classstdex_1_1zlib__writer.html">~zlib_writer</a>()</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> {</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> m_zlib.avail_in = 0;</div>
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||
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> m_zlib.next_in = NULL;</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordflow">do</span> {</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> m_zlib.avail_out = m_block_size;</div>
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||
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> m_zlib.next_out = m_block.get();</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> throw_on_zlib_error(deflate(&m_zlib, Z_FINISH));</div>
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||
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> m_source-><a class="code hl_function" href="classstdex_1_1stream_1_1basic.html#ad8af0444273509eb36ad81046ac92081">write</a>(m_block.get(), m_block_size - m_zlib.avail_out);</div>
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||
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keywordflow">if</span> (!m_source-><a class="code hl_function" href="classstdex_1_1stream_1_1basic.html#a0295e4efe18eef2a8962680274957ac1">ok</a>()) _Unlikely_</div>
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||
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">throw</span> std::system_error(sys_error(), std::system_category(), <span class="stringliteral">"failed to flush compressed stream"</span>); <span class="comment">// Data loss occured</span></div>
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||
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> } <span class="keywordflow">while</span> (m_zlib.avail_out == 0);</div>
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||
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// m_zlib.avail_out = m_block_size;</span></div>
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||
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// m_zlib.next_out = m_block.get();</span></div>
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||
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// deflateReset(&m_zlib);</span></div>
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||
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> deflateEnd(&m_zlib);</div>
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||
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> }</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
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||
<div class="foldopen" id="foldopen00074" data-start="{" data-end="}">
|
||
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"><a class="line" href="classstdex_1_1zlib__writer.html#a4adcd2265f851bf880ea404ff35026f3"> 74</a></span> <span class="keyword">virtual</span> _Success_(<span class="keywordflow">return</span> != 0) size_t <a class="code hl_function" href="classstdex_1_1zlib__writer.html#a4adcd2265f851bf880ea404ff35026f3">write</a>(</div>
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||
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> _In_reads_bytes_opt_(length) const <span class="keywordtype">void</span>* data, _In_ <span class="keywordtype">size_t</span> length)</div>
|
||
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> {</div>
|
||
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> _Assume_(data || !length);</div>
|
||
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordtype">size_t</span> num_written = 0;</div>
|
||
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keywordflow">while</span> (length) {</div>
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||
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> uInt num_inflated = <span class="keyword">static_cast<</span>uInt<span class="keyword">></span>(std::min<size_t>(length, UINT_MAX));</div>
|
||
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> m_zlib.avail_in = num_inflated;</div>
|
||
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> m_zlib.next_in = <span class="keyword">const_cast<</span>Bytef*<span class="keyword">></span>(<span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>Bytef*<span class="keyword">></span>(data));</div>
|
||
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">do</span> {</div>
|
||
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> m_zlib.avail_out = m_block_size;</div>
|
||
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> m_zlib.next_out = m_block.get();</div>
|
||
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> throw_on_zlib_error(deflate(&m_zlib, Z_NO_FLUSH));</div>
|
||
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordtype">size_t</span> num_deflated = m_block_size - m_zlib.avail_out;</div>
|
||
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordflow">if</span> (num_deflated) {</div>
|
||
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> m_source-><a class="code hl_function" href="classstdex_1_1stream_1_1basic.html#ad8af0444273509eb36ad81046ac92081">write</a>(m_block.get(), num_deflated);</div>
|
||
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keywordflow">if</span> (!m_source-><a class="code hl_function" href="classstdex_1_1stream_1_1basic.html#a0295e4efe18eef2a8962680274957ac1">ok</a>()) {</div>
|
||
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> m_state = m_source-><a class="code hl_function" href="classstdex_1_1stream_1_1basic.html#a2aa36b007017c2052a0118c1df4910d0">state</a>();</div>
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||
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">return</span> num_written;</div>
|
||
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> }</div>
|
||
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> }</div>
|
||
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> } <span class="keywordflow">while</span> (m_zlib.avail_out == 0);</div>
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||
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> num_written += num_inflated;</div>
|
||
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>Bytef*&<span class="keyword">></span>(data) += num_inflated;</div>
|
||
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> length -= num_inflated;</div>
|
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> }</div>
|
||
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> m_state = stdex::stream::state_t::ok;</div>
|
||
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">return</span> num_written;</div>
|
||
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> }</div>
|
||
</div>
|
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">protected</span>:</div>
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||
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> z_stream m_zlib;</div>
|
||
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> uInt m_block_size;</div>
|
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> std::unique_ptr<Byte[]> m_block;</div>
|
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> };</div>
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||
</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
|
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<div class="foldopen" id="foldopen00113" data-start="{" data-end="};">
|
||
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"><a class="line" href="classstdex_1_1zlib__reader.html"> 113</a></span> <span class="keyword">class </span><a class="code hl_class" href="classstdex_1_1zlib__reader.html">zlib_reader</a> : <span class="keyword">public</span> <a class="code hl_class" href="classstdex_1_1stream_1_1converter.html">stdex::stream::converter</a></div>
|
||
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> {</div>
|
||
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">public</span>:</div>
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||
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <a class="code hl_class" href="classstdex_1_1zlib__reader.html">zlib_reader</a>(_Inout_ <a class="code hl_class" href="classstdex_1_1stream_1_1basic.html">stdex::stream::basic</a>& source, _In_ uInt block_size = 0x10000) :</div>
|
||
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <a class="code hl_class" href="classstdex_1_1stream_1_1converter.html">stdex::stream::converter</a>(source),</div>
|
||
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> m_block_size(block_size),</div>
|
||
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> m_block(<span class="keyword">new</span> Byte[block_size])</div>
|
||
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> {</div>
|
||
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> memset(&m_zlib, 0, <span class="keyword">sizeof</span>(m_zlib));</div>
|
||
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> throw_on_zlib_error(inflateInit(&m_zlib));</div>
|
||
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> }</div>
|
||
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
|
||
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">virtual</span> <a class="code hl_class" href="classstdex_1_1zlib__reader.html">~zlib_reader</a>()</div>
|
||
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> {</div>
|
||
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> inflateEnd(&m_zlib);</div>
|
||
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> }</div>
|
||
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div>
|
||
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span><span class="preprocessor">#pragma warning(suppress: 6101) </span><span class="comment">// See [1] below</span></div>
|
||
<div class="foldopen" id="foldopen00131" data-start="{" data-end="}">
|
||
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"><a class="line" href="classstdex_1_1zlib__reader.html#a39f8e0728d79a4e1c92f07bb386fef86"> 131</a></span> <span class="keyword">virtual</span> _Success_(<span class="keywordflow">return</span> != 0 || length == 0) size_t <a class="code hl_function" href="classstdex_1_1zlib__reader.html#a39f8e0728d79a4e1c92f07bb386fef86">read</a>(</div>
|
||
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> _Out_writes_bytes_to_opt_(length, return) <span class="keywordtype">void</span>* data, _In_ <span class="keywordtype">size_t</span> length)</div>
|
||
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> {</div>
|
||
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> _Assume_(data || !length);</div>
|
||
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordtype">size_t</span> num_read = 0;</div>
|
||
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordflow">while</span> (length) {</div>
|
||
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> uInt num_deflated = <span class="keyword">static_cast<</span>uInt<span class="keyword">></span>(std::min<size_t>(length, UINT_MAX));</div>
|
||
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> m_zlib.avail_out = num_deflated;</div>
|
||
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> m_zlib.next_out = <span class="keyword">reinterpret_cast<</span>Bytef*<span class="keyword">></span>(data);</div>
|
||
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keywordflow">do</span> {</div>
|
||
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">if</span> (m_zlib.avail_in == 0) {</div>
|
||
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> m_zlib.next_in = m_block.get();</div>
|
||
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> m_zlib.avail_in = <span class="keyword">static_cast<</span>uInt<span class="keyword">></span>(m_source-><a class="code hl_function" href="classstdex_1_1stream_1_1basic.html#aa5d4693fd583cd7ef0ffa9b846136a5a">read</a>(m_block.get(), m_block_size));</div>
|
||
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keywordflow">if</span> (!m_zlib.avail_in) {</div>
|
||
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> num_read += num_deflated - m_zlib.avail_out; <span class="comment">// [1] Code analysis misses `num_deflated - m_zlib.avail_out` bytes were written to data in previous loop iterations.</span></div>
|
||
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordflow">if</span> (num_read) {</div>
|
||
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> m_state = stdex::stream::state_t::ok;</div>
|
||
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keywordflow">return</span> num_read;</div>
|
||
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> }</div>
|
||
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> m_state = m_source-><a class="code hl_function" href="classstdex_1_1stream_1_1basic.html#a2aa36b007017c2052a0118c1df4910d0">state</a>();</div>
|
||
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="keywordflow">return</span> 0;</div>
|
||
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> }</div>
|
||
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> }</div>
|
||
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> throw_on_zlib_error(inflate(&m_zlib, Z_NO_FLUSH));</div>
|
||
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> } <span class="keywordflow">while</span> (m_zlib.avail_out);</div>
|
||
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> num_read += num_deflated;</div>
|
||
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keyword">reinterpret_cast<</span>Bytef*&<span class="keyword">></span>(data) += num_deflated;</div>
|
||
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> length -= num_deflated;</div>
|
||
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> }</div>
|
||
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> m_state = stdex::stream::state_t::ok;</div>
|
||
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="keywordflow">return</span> num_read;</div>
|
||
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> }</div>
|
||
</div>
|
||
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
|
||
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">protected</span>:</div>
|
||
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> z_stream m_zlib;</div>
|
||
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> uInt m_block_size;</div>
|
||
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> std::unique_ptr<Byte[]> m_block;</div>
|
||
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> };</div>
|
||
</div>
|
||
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span>}</div>
|
||
<div class="ttc" id="aclassstdex_1_1stream_1_1basic_html"><div class="ttname"><a href="classstdex_1_1stream_1_1basic.html">stdex::stream::basic</a></div><div class="ttdoc">UTF-8 byte-order-mark</div><div class="ttdef"><b>Definition</b> stream.hpp:79</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1stream_1_1basic_html_a0295e4efe18eef2a8962680274957ac1"><div class="ttname"><a href="classstdex_1_1stream_1_1basic.html#a0295e4efe18eef2a8962680274957ac1">stdex::stream::basic::ok</a></div><div class="ttdeci">bool ok() const</div><div class="ttdoc">Returns true if the stream state is clean i.e. previous operation was succesful.</div><div class="ttdef"><b>Definition</b> stream.hpp:175</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1stream_1_1basic_html_a2aa36b007017c2052a0118c1df4910d0"><div class="ttname"><a href="classstdex_1_1stream_1_1basic.html#a2aa36b007017c2052a0118c1df4910d0">stdex::stream::basic::state</a></div><div class="ttdeci">state_t state() const</div><div class="ttdoc">Returns stream state after last operation.</div><div class="ttdef"><b>Definition</b> stream.hpp:170</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1stream_1_1basic_html_aa5d4693fd583cd7ef0ffa9b846136a5a"><div class="ttname"><a href="classstdex_1_1stream_1_1basic.html#aa5d4693fd583cd7ef0ffa9b846136a5a">stdex::stream::basic::read</a></div><div class="ttdeci">virtual size_t read(_Out_writes_bytes_to_opt_(length, return) void *data, size_t length)</div><div class="ttdoc">Reads block of data from the stream.</div><div class="ttdef"><b>Definition</b> stream.hpp:96</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1stream_1_1basic_html_ad8af0444273509eb36ad81046ac92081"><div class="ttname"><a href="classstdex_1_1stream_1_1basic.html#ad8af0444273509eb36ad81046ac92081">stdex::stream::basic::write</a></div><div class="ttdeci">virtual size_t write(_In_reads_bytes_opt_(length) const void *data, size_t length)</div><div class="ttdoc">Writes block of data to the stream.</div><div class="ttdef"><b>Definition</b> stream.hpp:114</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1stream_1_1converter_html"><div class="ttname"><a href="classstdex_1_1stream_1_1converter.html">stdex::stream::converter</a></div><div class="ttdoc">Modifies data on the fly when reading from/writing to a source stream. Could also be used to modify r...</div><div class="ttdef"><b>Definition</b> stream.hpp:1012</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1zlib__reader_html"><div class="ttname"><a href="classstdex_1_1zlib__reader.html">stdex::zlib_reader</a></div><div class="ttdoc">Decompresses data when reading from a stream.</div><div class="ttdef"><b>Definition</b> zlib.hpp:114</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1zlib__reader_html_a39f8e0728d79a4e1c92f07bb386fef86"><div class="ttname"><a href="classstdex_1_1zlib__reader.html#a39f8e0728d79a4e1c92f07bb386fef86">stdex::zlib_reader::read</a></div><div class="ttdeci">virtual size_t read(_Out_writes_bytes_to_opt_(length, return) void *data, size_t length)</div><div class="ttdoc">Reads block of data from the stream.</div><div class="ttdef"><b>Definition</b> zlib.hpp:131</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1zlib__writer_html"><div class="ttname"><a href="classstdex_1_1zlib__writer.html">stdex::zlib_writer</a></div><div class="ttdoc">Compresses data when writing to a stream.</div><div class="ttdef"><b>Definition</b> zlib.hpp:45</div></div>
|
||
<div class="ttc" id="aclassstdex_1_1zlib__writer_html_a4adcd2265f851bf880ea404ff35026f3"><div class="ttname"><a href="classstdex_1_1zlib__writer.html#a4adcd2265f851bf880ea404ff35026f3">stdex::zlib_writer::write</a></div><div class="ttdeci">virtual size_t write(_In_reads_bytes_opt_(length) const void *data, size_t length)</div><div class="ttdoc">Writes block of data to the stream.</div><div class="ttdef"><b>Definition</b> zlib.hpp:74</div></div>
|
||
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