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+<div class="title">convert.cpp</div> </div>
+</div><!--header-->
+<div class="contents">
+<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright (c) 2020 Egor Tensin &lt;Egor.Tensin@gmail.com&gt;</span></div>
+<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// This file is part of the &quot;winapi-utf8&quot; project.</span></div>
+<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// For details, see https://github.com/egor-tensin/winapi-utf8.</span></div>
+<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// Distributed under the MIT License.</span></div>
+<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160; </div>
+<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="utf8_8hpp.html">winapi/utf8.hpp</a>&gt;</span></div>
+<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160; </div>
+<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &lt;windows.h&gt;</span></div>
+<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160; </div>
+<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div>
+<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &lt;cstdint&gt;</span></div>
+<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &lt;sstream&gt;</span></div>
+<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &lt;stdexcept&gt;</span></div>
+<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
+<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</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="keyword">namespace </span>winapi {</div>
+<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">namespace </span>{</div>
+<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
+<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;std::runtime_error error(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">function</span>, DWORD code) {</div>
+<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; std::ostringstream oss;</div>
+<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; oss &lt;&lt; <span class="stringliteral">&quot;Function &quot;</span> &lt;&lt; <span class="keyword">function</span> &lt;&lt; <span class="stringliteral">&quot; failed with error code &quot;</span> &lt;&lt; code;</div>
+<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="keywordflow">return</span> std::runtime_error{oss.str()};</div>
+<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;}</div>
+<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; </div>
+<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keywordtype">bool</span> size_t_to_int(std::size_t src, int32_t&amp; dest) {</div>
+<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; <span class="keywordflow">if</span> (src &gt; <span class="keyword">static_cast&lt;</span>uint32_t<span class="keyword">&gt;</span>(INT32_MAX))</div>
+<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
+<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; dest = <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(src);</div>
+<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
+<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;}</div>
+<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
+<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keywordtype">bool</span> int_to_size_t(int32_t src, std::size_t&amp; dest) {</div>
+<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keywordflow">if</span> (src &lt; 0 || <span class="keyword">static_cast&lt;</span>uint32_t<span class="keyword">&gt;</span>(src) &gt; SIZE_MAX)</div>
+<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
+<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; dest = <span class="keyword">static_cast&lt;</span>std::size_t<span class="keyword">&gt;</span>(src);</div>
+<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
+<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;}</div>
+<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; </div>
+<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;int32_t convert_input_bytes_to_bytes(std::size_t nb) {</div>
+<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; int32_t real_nb = 0;</div>
+<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; </div>
+<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">if</span> (!size_t_to_int(nb, real_nb)) {</div>
+<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; std::ostringstream oss;</div>
+<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; oss &lt;&lt; <span class="stringliteral">&quot;Input buffer is too large at &quot;</span> &lt;&lt; nb &lt;&lt; <span class="stringliteral">&quot; bytes&quot;</span>;</div>
+<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">throw</span> std::runtime_error{oss.str()};</div>
+<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; }</div>
+<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; </div>
+<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span> real_nb;</div>
+<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;}</div>
+<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; </div>
+<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;int32_t convert_input_bytes_to_chars(std::size_t nb) {</div>
+<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">if</span> (nb % <span class="keyword">sizeof</span>(WCHAR) != 0) {</div>
+<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; std::ostringstream oss;</div>
+<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; oss &lt;&lt; <span class="stringliteral">&quot;Buffer size invalid at &quot;</span> &lt;&lt; nb &lt;&lt; <span class="stringliteral">&quot; bytes&quot;</span>;</div>
+<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordflow">throw</span> std::runtime_error{oss.str()};</div>
+<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; }</div>
+<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; </div>
+<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keyword">const</span> std::size_t nch = nb / <span class="keyword">sizeof</span>(WCHAR);</div>
+<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; int32_t real_nch = 0;</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="keywordflow">if</span> (!size_t_to_int(nch, real_nch)) {</div>
+<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; std::ostringstream oss;</div>
+<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; oss &lt;&lt; <span class="stringliteral">&quot;Input buffer is too large at &quot;</span> &lt;&lt; nch &lt;&lt; <span class="stringliteral">&quot; characters&quot;</span>;</div>
+<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">throw</span> std::runtime_error{oss.str()};</div>
+<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; }</div>
+<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; </div>
+<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">return</span> real_nch;</div>
+<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;}</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="keyword">template</span> &lt;<span class="keyword">typename</span> CharT&gt;</div>
+<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;std::vector&lt;CharT&gt; output_buffer(int32_t size) {</div>
+<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; std::size_t real_size = 0;</div>
+<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
+<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordflow">if</span> (!int_to_size_t(size, real_size)) {</div>
+<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; std::ostringstream oss;</div>
+<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; oss &lt;&lt; <span class="stringliteral">&quot;Buffer size invalid at &quot;</span> &lt;&lt; size &lt;&lt; <span class="stringliteral">&quot; bytes&quot;</span>;</div>
+<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">throw</span> std::runtime_error{oss.str()};</div>
+<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; }</div>
+<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; </div>
+<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; std::vector&lt;CharT&gt; buffer;</div>
+<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; buffer.resize(real_size);</div>
+<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keywordflow">return</span> buffer;</div>
+<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;}</div>
+<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; </div>
+<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> CharT&gt;</div>
+<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="keywordtype">void</span> verify_output(<span class="keyword">const</span> std::vector&lt;CharT&gt;&amp; expected, int32_t _actual_size) {</div>
+<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; std::size_t actual_size = 0;</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; <span class="keywordflow">if</span> (!int_to_size_t(_actual_size, actual_size) || expected.size() != actual_size) {</div>
+<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; std::ostringstream oss;</div>
+<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; oss &lt;&lt; <span class="stringliteral">&quot;Expected output length &quot;</span> &lt;&lt; expected.size() &lt;&lt; <span class="stringliteral">&quot;, got &quot;</span> &lt;&lt; _actual_size;</div>
+<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">throw</span> std::runtime_error{oss.str()};</div>
+<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; }</div>
+<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;}</div>
+<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; </div>
+<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;} <span class="comment">// namespace</span></div>
+<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; </div>
+<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="utf8_8hpp.html#a4b174d9e77015c16d3e3ab6ad95000b6"> 99</a></span>&#160;std::wstring <a class="code" href="utf8_8hpp.html#a4b174d9e77015c16d3e3ab6ad95000b6">widen</a>(<span class="keyword">const</span> std::string&amp; src) {</div>
+<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">return</span> <a class="code" href="utf8_8hpp.html#a4b174d9e77015c16d3e3ab6ad95000b6">widen</a>(src.c_str(), src.size());</div>
+<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;}</div>
+<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; </div>
+<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="utf8_8hpp.html#a4e76f5bf03006c3d073b189ac937c78f"> 103</a></span>&#160;std::wstring <a class="code" href="utf8_8hpp.html#a4b174d9e77015c16d3e3ab6ad95000b6">widen</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* src, std::size_t in_nb) {</div>
+<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keyword">const</span> DWORD flags = MB_ERR_INVALID_CHARS;</div>
+<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; </div>
+<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> in_data = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(src);</div>
+<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> real_in_nb = convert_input_bytes_to_bytes(in_nb);</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="keyword">auto</span> out_nch = ::MultiByteToWideChar(CP_UTF8, flags, in_data, real_in_nb, NULL, 0);</div>
+<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; </div>
+<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keywordflow">if</span> (out_nch == 0) {</div>
+<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">throw</span> error(<span class="stringliteral">&quot;MultiByteToWideChar&quot;</span>, GetLastError());</div>
+<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; }</div>
+<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; </div>
+<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; static_assert(<span class="keyword">sizeof</span>(<span class="keywordtype">wchar_t</span>) == <span class="keyword">sizeof</span>(WCHAR), <span class="stringliteral">&quot;wchar_t != WCHAR&quot;</span>);</div>
+<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keyword">auto</span> out = output_buffer&lt;wchar_t&gt;(out_nch);</div>
+<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; </div>
+<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; out_nch = ::MultiByteToWideChar(CP_UTF8, flags, in_data, real_in_nb, out.data(), out_nch);</div>
+<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; </div>
+<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keywordflow">if</span> (out_nch == 0) {</div>
+<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keywordflow">throw</span> error(<span class="stringliteral">&quot;MultiByteToWideChar&quot;</span>, GetLastError());</div>
+<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; }</div>
+<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; </div>
+<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; verify_output(out, out_nch);</div>
+<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordflow">return</span> {out.data(), out.size()};</div>
+<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;}</div>
+<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; </div>
+<div class="line"><a name="l00128"></a><span class="lineno"><a class="line" href="utf8_8hpp.html#ae643a038e8194c1f0d14bdf9edcafcb7"> 128</a></span>&#160;std::string <a class="code" href="utf8_8hpp.html#ae643a038e8194c1f0d14bdf9edcafcb7">narrow</a>(<span class="keyword">const</span> std::wstring&amp; src) {</div>
+<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; static_assert(<span class="keyword">sizeof</span>(<span class="keywordtype">wchar_t</span>) == <span class="keyword">sizeof</span>(WCHAR), <span class="stringliteral">&quot;wchar_t != WCHAR&quot;</span>);</div>
+<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keywordflow">return</span> <a class="code" href="utf8_8hpp.html#ae643a038e8194c1f0d14bdf9edcafcb7">narrow</a>(src.c_str(), src.size() * <span class="keyword">sizeof</span>(std::wstring::value_type));</div>
+<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;}</div>
+<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; </div>
+<div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="utf8_8hpp.html#a2795e1f7649c053417f39b90d3f3480f"> 133</a></span>&#160;std::string <a class="code" href="utf8_8hpp.html#ae643a038e8194c1f0d14bdf9edcafcb7">narrow</a>(<span class="keyword">const</span> std::u16string&amp; src) {</div>
+<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">return</span> <a class="code" href="utf8_8hpp.html#ae643a038e8194c1f0d14bdf9edcafcb7">narrow</a>(src.c_str(), src.size() * <span class="keyword">sizeof</span>(std::u16string::value_type));</div>
+<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;}</div>
+<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; </div>
+<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="utf8_8hpp.html#aeeef0f99233162d79ebedc551e87f0d0"> 137</a></span>&#160;std::string <a class="code" href="utf8_8hpp.html#ae643a038e8194c1f0d14bdf9edcafcb7">narrow</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* src, std::size_t in_nb) {</div>
+<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keyword">const</span> DWORD flags = WC_ERR_INVALID_CHARS;</div>
+<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; </div>
+<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> in_data = <span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span><span class="keywordtype">wchar_t</span>*<span class="keyword">&gt;</span>(src);</div>
+<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> in_nch = convert_input_bytes_to_chars(in_nb);</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="keyword">auto</span> out_nb = ::WideCharToMultiByte(CP_UTF8, flags, in_data, in_nch, NULL, 0, NULL, NULL);</div>
+<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; </div>
+<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordflow">if</span> (out_nb == 0) {</div>
+<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">throw</span> error(<span class="stringliteral">&quot;WideCharToMultiByte&quot;</span>, GetLastError());</div>
+<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; }</div>
+<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; </div>
+<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keyword">auto</span> out = output_buffer&lt;char&gt;(out_nb);</div>
+<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; </div>
+<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; out_nb = ::WideCharToMultiByte(CP_UTF8, flags, in_data, in_nch, out.data(), out_nb, NULL, NULL);</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="keywordflow">if</span> (out_nb == 0) {</div>
+<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordflow">throw</span> error(<span class="stringliteral">&quot;WideCharToMultiByte&quot;</span>, GetLastError());</div>
+<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; }</div>
+<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; </div>
+<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; verify_output(out, out_nb);</div>
+<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">return</span> {out.data(), out.size()};</div>
+<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;}</div>
+<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; </div>
+<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;} <span class="comment">// namespace winapi</span></div>
+<div class="ttc" id="autf8_8hpp_html"><div class="ttname"><a href="utf8_8hpp.html">utf8.hpp</a></div><div class="ttdoc">UTF-8 &lt;-&gt; UTF-16 conversion functions.</div></div>
+<div class="ttc" id="autf8_8hpp_html_a4b174d9e77015c16d3e3ab6ad95000b6"><div class="ttname"><a href="utf8_8hpp.html#a4b174d9e77015c16d3e3ab6ad95000b6">winapi::widen</a></div><div class="ttdeci">std::wstring widen(const std::string &amp;)</div><div class="ttdef"><b>Definition:</b> <a href="convert_8cpp_source.html#l00099">convert.cpp:99</a></div></div>
+<div class="ttc" id="autf8_8hpp_html_ae643a038e8194c1f0d14bdf9edcafcb7"><div class="ttname"><a href="utf8_8hpp.html#ae643a038e8194c1f0d14bdf9edcafcb7">winapi::narrow</a></div><div class="ttdeci">std::string narrow(const std::wstring &amp;)</div><div class="ttdef"><b>Definition:</b> <a href="convert_8cpp_source.html#l00128">convert.cpp:128</a></div></div>
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