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<div class="title">cenv.hpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright (c) 2012 Artyom Beilis (Tonkikh)</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Distributed under the Boost Software License, Version 1.0. (See</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// accompanying file LICENSE_1_0.txt or copy at</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.boost.org/LICENSE_1_0.txt)</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_NOWIDE_CENV_H_INCLUDED</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BOOST_NOWIDE_CENV_H_INCLUDED</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <string></span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <stdexcept></span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <stdlib.h></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <boost/config.hpp></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <boost/nowide/stackstring.hpp></span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <vector></span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifdef BOOST_WINDOWS</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <boost/nowide/windows.hpp></span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">namespace </span>boost {</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>nowide {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"> #if !defined(BOOST_WINDOWS) && !defined(BOOST_NOWIDE_DOXYGEN)</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  using ::getenv;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  using ::setenv;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  using ::unsetenv;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  using ::putenv;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"> #else</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">inline</span> <span class="keywordtype">char</span> *<a class="code" href="namespaceboost_1_1nowide.html#a6644397c539754076b11e95c535be192">getenv</a>(<span class="keywordtype">char</span> <span class="keyword">const</span> *key)</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  {</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">static</span> <a class="code" href="namespaceboost_1_1nowide.html#acd4c19d4e98ae3e50b08ef2ef5056a12">stackstring</a> value;</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="namespaceboost_1_1nowide.html#a8369c10c0df6e36cd10cb9f9beb3149d">wshort_stackstring</a> name;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">if</span>(!name.convert(key))</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> buf_size = 64;</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">wchar_t</span> buf[buf_size];</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  std::vector<wchar_t> tmp;</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">wchar_t</span> *ptr = buf;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">size_t</span> n = GetEnvironmentVariableW(name.c_str(),buf,buf_size);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span>(n == 0 && GetLastError() == 203) <span class="comment">// ERROR_ENVVAR_NOT_FOUND</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">if</span>(n >= buf_size) {</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  tmp.resize(n+1,L<span class="charliteral">'\0'</span>);</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  n = GetEnvironmentVariableW(name.c_str(),&tmp[0],<span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span><span class="keyword">></span>(tmp.size() - 1));</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// The size may have changed</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span>(n >= tmp.size() - 1)</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  ptr = &tmp[0];</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">if</span>(!value.convert(ptr))</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> value.c_str();</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
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<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="namespaceboost_1_1nowide.html#a19d4925ea2c77e0b2abd8f5d045a8af2"> 68</a></span>  <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="namespaceboost_1_1nowide.html#a19d4925ea2c77e0b2abd8f5d045a8af2">setenv</a>(<span class="keywordtype">char</span> <span class="keyword">const</span> *key,<span class="keywordtype">char</span> <span class="keyword">const</span> *value,<span class="keywordtype">int</span> <span class="keyword">override</span>)</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="classboost_1_1nowide_1_1basic__stackstring.html">wshort_stackstring</a> name;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">if</span>(!name.convert(key))</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span>(!<span class="keyword">override</span>) {</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">wchar_t</span> unused[2];</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span>(!(GetEnvironmentVariableW(name.c_str(),unused,2)==0 && GetLastError() == 203)) <span class="comment">// ERROR_ENVVAR_NOT_FOUND</span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="classboost_1_1nowide_1_1basic__stackstring.html">wstackstring</a> wval;</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span>(!wval.convert(value))</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span>(SetEnvironmentVariableW(name.c_str(),wval.c_str()))</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="namespaceboost_1_1nowide.html#a61c3e97d5b8fd9c9a1812e2004ef7db6"> 88</a></span>  <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="namespaceboost_1_1nowide.html#a61c3e97d5b8fd9c9a1812e2004ef7db6">unsetenv</a>(<span class="keywordtype">char</span> <span class="keyword">const</span> *key)</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  {</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="classboost_1_1nowide_1_1basic__stackstring.html">wshort_stackstring</a> name;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span>(!name.convert(key))</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span>(SetEnvironmentVariableW(name.c_str(),0))</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div>
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<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="namespaceboost_1_1nowide.html#ad42e1fc3dd7ac556a551fbac3fa553e3"> 100</a></span>  <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="namespaceboost_1_1nowide.html#ad42e1fc3dd7ac556a551fbac3fa553e3">putenv</a>(<span class="keywordtype">char</span> *<span class="keywordtype">string</span>)</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  {</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">char</span> <span class="keyword">const</span> *key = string;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">char</span> <span class="keyword">const</span> *key_end = string;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">while</span>(*key_end!=<span class="charliteral">'='</span> && key_end!=<span class="charliteral">'\0'</span>)</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  key_end++;</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span>(*key_end == <span class="charliteral">'\0'</span>)</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <a class="code" href="classboost_1_1nowide_1_1basic__stackstring.html">wshort_stackstring</a> wkey;</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span>(!wkey.convert(key,key_end))</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  </div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="classboost_1_1nowide_1_1basic__stackstring.html">wstackstring</a> wvalue;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span>(!wvalue.convert(key_end+1))</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span>(SetEnvironmentVariableW(wkey.c_str(),wvalue.c_str()))</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor"> #endif</span></div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> } <span class="comment">// nowide</span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> } <span class="comment">// namespace boost</span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#endif</span></div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4</span></div>
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<div class="ttc" id="namespaceboost_1_1nowide_html_a8369c10c0df6e36cd10cb9f9beb3149d"><div class="ttname"><a href="namespaceboost_1_1nowide.html#a8369c10c0df6e36cd10cb9f9beb3149d">boost::nowide::wshort_stackstring</a></div><div class="ttdeci">basic_stackstring< wchar_t, char, 16 > wshort_stackstring</div><div class="ttdef"><b>Definition:</b> stackstring.hpp:142</div></div>
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<div class="ttc" id="namespaceboost_1_1nowide_html_a19d4925ea2c77e0b2abd8f5d045a8af2"><div class="ttname"><a href="namespaceboost_1_1nowide.html#a19d4925ea2c77e0b2abd8f5d045a8af2">boost::nowide::setenv</a></div><div class="ttdeci">int setenv(char const *key, char const *value, int override)</div><div class="ttdoc">UTF-8 aware setenv, key - the variable name, value is a new UTF-8 value,. </div><div class="ttdef"><b>Definition:</b> cenv.hpp:68</div></div>
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<div class="ttc" id="namespaceboost_1_1nowide_html_ad42e1fc3dd7ac556a551fbac3fa553e3"><div class="ttname"><a href="namespaceboost_1_1nowide.html#ad42e1fc3dd7ac556a551fbac3fa553e3">boost::nowide::putenv</a></div><div class="ttdeci">int putenv(char *string)</div><div class="ttdoc">UTF-8 aware putenv implementation, expects string in format KEY=VALUE. </div><div class="ttdef"><b>Definition:</b> cenv.hpp:100</div></div>
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<div class="ttc" id="namespaceboost_1_1nowide_html_a61c3e97d5b8fd9c9a1812e2004ef7db6"><div class="ttname"><a href="namespaceboost_1_1nowide.html#a61c3e97d5b8fd9c9a1812e2004ef7db6">boost::nowide::unsetenv</a></div><div class="ttdeci">int unsetenv(char const *key)</div><div class="ttdoc">Remove enviroment variable key. </div><div class="ttdef"><b>Definition:</b> cenv.hpp:88</div></div>
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<div class="ttc" id="namespaceboost_1_1nowide_html_a6644397c539754076b11e95c535be192"><div class="ttname"><a href="namespaceboost_1_1nowide.html#a6644397c539754076b11e95c535be192">boost::nowide::getenv</a></div><div class="ttdeci">char * getenv(char const *key)</div><div class="ttdoc">UTF-8 aware getenv. Returns 0 if the variable is not set. </div><div class="ttdef"><b>Definition:</b> cenv.hpp:35</div></div>
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<div class="ttc" id="namespaceboost_1_1nowide_html_acd4c19d4e98ae3e50b08ef2ef5056a12"><div class="ttname"><a href="namespaceboost_1_1nowide.html#acd4c19d4e98ae3e50b08ef2ef5056a12">boost::nowide::stackstring</a></div><div class="ttdeci">basic_stackstring< char, wchar_t, 256 > stackstring</div><div class="ttdef"><b>Definition:</b> stackstring.hpp:138</div></div>
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<div class="ttc" id="classboost_1_1nowide_1_1basic__stackstring_html"><div class="ttname"><a href="classboost_1_1nowide_1_1basic__stackstring.html">boost::nowide::basic_stackstring</a></div><div class="ttdoc">A class that allows to create a temporary wide or narrow UTF strings from wide or narrow UTF source...</div><div class="ttdef"><b>Definition:</b> stackstring.hpp:25</div></div>
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