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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_f1714771db42b7b5a0cd2ebe6e9736ed.html">winapi</a></li> </ul>
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<div class="title">buffer.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com></span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// This file is part of the "winapi-common" project.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// For details, see https://github.com/egor-tensin/winapi-common.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Distributed under the MIT License.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>  </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <cstddef></span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <cstring></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <initializer_list></span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <sstream></span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <stdexcept></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <string></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <utility></span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>winapi {</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html"> 24</a></span> <span class="keyword">class </span><a class="code" href="classwinapi_1_1Buffer.html">Buffer</a> : <span class="keyword">public</span> std::vector<unsigned char> {</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">typedef</span> std::vector<unsigned char> Parent;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <a class="code" href="classwinapi_1_1Buffer.html">Buffer</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#abb43686e0f2e5798bc7b2c0e47722458"> 31</a></span>  <a class="code" href="classwinapi_1_1Buffer.html#abb43686e0f2e5798bc7b2c0e47722458">Buffer</a>(std::initializer_list<unsigned char> lst) : Parent{lst} {}</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#a46241e1fd3443c383c3930329ca9e0dd"> 34</a></span>  <span class="keyword">explicit</span> <a class="code" href="classwinapi_1_1Buffer.html#a46241e1fd3443c383c3930329ca9e0dd">Buffer</a>(Parent&& src) : Parent{std::move(src)} {}</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> CharT></div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#aa3566a7ac7025a2f88abe116082b55a7"> 38</a></span>  <span class="keyword">explicit</span> <a class="code" href="classwinapi_1_1Buffer.html#aa3566a7ac7025a2f88abe116082b55a7">Buffer</a>(<span class="keyword">const</span> std::basic_string<CharT>& src) {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="classwinapi_1_1Buffer.html#a0b2fad438202fbcfd4946baf3f879f59">set</a>(src);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  }</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#ab3649ebbd0cbc4b20d02b660a52be89c"> 43</a></span>  <a class="code" href="classwinapi_1_1Buffer.html#ab3649ebbd0cbc4b20d02b660a52be89c">Buffer</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* src, std::size_t nb) { <a class="code" href="classwinapi_1_1Buffer.html#a0b2fad438202fbcfd4946baf3f879f59">set</a>(src, nb); }</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> CharT></div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#a0b2fad438202fbcfd4946baf3f879f59"> 47</a></span>  <span class="keywordtype">void</span> <a class="code" href="classwinapi_1_1Buffer.html#a0b2fad438202fbcfd4946baf3f879f59">set</a>(<span class="keyword">const</span> std::basic_string<CharT>& src) {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="classwinapi_1_1Buffer.html#a0b2fad438202fbcfd4946baf3f879f59">set</a>(src.c_str(), src.length() * <span class="keyword">sizeof</span>(std::basic_string<CharT>::char_type));</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#ab09aa9c5075579510da463b4148ee610"> 52</a></span>  <span class="keywordtype">void</span> <a class="code" href="classwinapi_1_1Buffer.html#ab09aa9c5075579510da463b4148ee610">set</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* src, std::size_t nb) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  resize(nb);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  std::memcpy(data(), src, nb);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#afd8abcecacbcc9fdb4e5825068ebf561"> 58</a></span>  std::string <a class="code" href="classwinapi_1_1Buffer.html#afd8abcecacbcc9fdb4e5825068ebf561">as_utf8</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">const</span> <span class="keyword">auto</span> c_str = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(data());</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">const</span> <span class="keyword">auto</span> nb = size();</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">const</span> <span class="keyword">auto</span> nch = nb;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span> {c_str, nch};</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#ac5ca93f1935f2259db0d68e1884897d5"> 66</a></span>  std::wstring <a class="code" href="classwinapi_1_1Buffer.html#ac5ca93f1935f2259db0d68e1884897d5">as_utf16</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">const</span> <span class="keyword">auto</span> c_str = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">wchar_t</span>*<span class="keyword">></span>(data());</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">const</span> <span class="keyword">auto</span> nb = size();</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (nb % 2 != 0) {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  std::ostringstream oss;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  oss << <span class="stringliteral">"Buffer size invalid at "</span> << nb << <span class="stringliteral">" bytes"</span>;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">throw</span> std::runtime_error{oss.str()};</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">const</span> <span class="keyword">auto</span> nch = nb / 2;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> {c_str, nch};</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classwinapi_1_1Buffer.html#a303645b281fb4f1a4d9e84f1d1370182"> 79</a></span>  <span class="keywordtype">void</span> <a class="code" href="classwinapi_1_1Buffer.html#a303645b281fb4f1a4d9e84f1d1370182">add</a>(<span class="keyword">const</span> <a class="code" href="classwinapi_1_1Buffer.html">Buffer</a>& src) {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">const</span> <span class="keyword">auto</span> nb = size();</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  resize(nb + src.size());</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  std::memcpy(data() + nb, src.data(), src.size());</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> };</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">// namespace winapi</span></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html"><div class="ttname"><a href="classwinapi_1_1Buffer.html">winapi::Buffer</a></div><div class="ttdoc">Binary data container.</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00024">buffer.hpp:24</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_a0b2fad438202fbcfd4946baf3f879f59"><div class="ttname"><a href="classwinapi_1_1Buffer.html#a0b2fad438202fbcfd4946baf3f879f59">winapi::Buffer::set</a></div><div class="ttdeci">void set(const std::basic_string< CharT > &src)</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00047">buffer.hpp:47</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_a303645b281fb4f1a4d9e84f1d1370182"><div class="ttname"><a href="classwinapi_1_1Buffer.html#a303645b281fb4f1a4d9e84f1d1370182">winapi::Buffer::add</a></div><div class="ttdeci">void add(const Buffer &src)</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00079">buffer.hpp:79</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_a46241e1fd3443c383c3930329ca9e0dd"><div class="ttname"><a href="classwinapi_1_1Buffer.html#a46241e1fd3443c383c3930329ca9e0dd">winapi::Buffer::Buffer</a></div><div class="ttdeci">Buffer(Parent &&src)</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00034">buffer.hpp:34</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_aa3566a7ac7025a2f88abe116082b55a7"><div class="ttname"><a href="classwinapi_1_1Buffer.html#aa3566a7ac7025a2f88abe116082b55a7">winapi::Buffer::Buffer</a></div><div class="ttdeci">Buffer(const std::basic_string< CharT > &src)</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00038">buffer.hpp:38</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_ab09aa9c5075579510da463b4148ee610"><div class="ttname"><a href="classwinapi_1_1Buffer.html#ab09aa9c5075579510da463b4148ee610">winapi::Buffer::set</a></div><div class="ttdeci">void set(const void *src, std::size_t nb)</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00052">buffer.hpp:52</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_ab3649ebbd0cbc4b20d02b660a52be89c"><div class="ttname"><a href="classwinapi_1_1Buffer.html#ab3649ebbd0cbc4b20d02b660a52be89c">winapi::Buffer::Buffer</a></div><div class="ttdeci">Buffer(const void *src, std::size_t nb)</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00043">buffer.hpp:43</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_abb43686e0f2e5798bc7b2c0e47722458"><div class="ttname"><a href="classwinapi_1_1Buffer.html#abb43686e0f2e5798bc7b2c0e47722458">winapi::Buffer::Buffer</a></div><div class="ttdeci">Buffer(std::initializer_list< unsigned char > lst)</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00031">buffer.hpp:31</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_ac5ca93f1935f2259db0d68e1884897d5"><div class="ttname"><a href="classwinapi_1_1Buffer.html#ac5ca93f1935f2259db0d68e1884897d5">winapi::Buffer::as_utf16</a></div><div class="ttdeci">std::wstring as_utf16() const</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00066">buffer.hpp:66</a></div></div>
<div class="ttc" id="aclasswinapi_1_1Buffer_html_afd8abcecacbcc9fdb4e5825068ebf561"><div class="ttname"><a href="classwinapi_1_1Buffer.html#afd8abcecacbcc9fdb4e5825068ebf561">winapi::Buffer::as_utf8</a></div><div class="ttdeci">std::string as_utf8() const</div><div class="ttdef"><b>Definition:</b> <a href="buffer_8hpp_source.html#l00058">buffer.hpp:58</a></div></div>
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