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- <div class="title">Base64.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">/*</span></div>
- <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * DISTRHO Plugin Framework (DPF)</span></div>
- <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright (C) 2012-2015 Filipe Coelho <falktx@falktx.com></span></div>
- <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
- <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Permission to use, copy, modify, and/or distribute this software for any purpose with</span></div>
- <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * or without fee is hereby granted, provided that the above copyright notice and this</span></div>
- <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * permission notice appear in all copies.</span></div>
- <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
- <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD</span></div>
- <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN</span></div>
- <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL</span></div>
- <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER</span></div>
- <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN</span></div>
- <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
- <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> */</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="preprocessor">#ifndef DISTRHO_BASE64_HPP_INCLUDED</span></div>
- <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define DISTRHO_BASE64_HPP_INCLUDED</span></div>
- <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
- <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "../DistrhoUtils.hpp"</span></div>
- <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
- <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <cctype></span></div>
- <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <vector></span></div>
- <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
- <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// -----------------------------------------------------------------------</span></div>
- <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// base64 stuff, based on http://www.adp-gmbh.ch/cpp/common/base64.html</span></div>
- <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// Copyright (C) 2004-2008 RenĂ© Nyffenegger</span></div>
- <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
- <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// -----------------------------------------------------------------------</span></div>
- <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// Helpers</span></div>
- <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
- <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#ifndef DOXYGEN</span></div>
- <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">namespace </span>DistrhoBase64Helpers {</div>
- <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
- <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> kBase64Chars =</div>
- <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="stringliteral">"ABCDEFGHIJKLMNOPQRSTUVWXYZ"</span></div>
- <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="stringliteral">"abcdefghijklmnopqrstuvwxyz"</span></div>
- <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="stringliteral">"0123456789+/"</span>;</div>
- <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
- <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">static</span> <span class="keyword">inline</span></div>
- <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> uint8_t findBase64CharIndex(<span class="keyword">const</span> <span class="keywordtype">char</span> c)</div>
- <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div>
- <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">static</span> <span class="keyword">const</span> uint8_t kBase64CharsLen(static_cast<uint8_t>(std::strlen(kBase64Chars)));</div>
- <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
- <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">for</span> (uint8_t i=0; i<kBase64CharsLen; ++i)</div>
- <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  {</div>
- <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span> (kBase64Chars[i] == c)</div>
- <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">return</span> i;</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="l00051"></a><span class="lineno"> 51</span>  d_stderr2(<span class="stringliteral">"findBase64CharIndex('%c') - failed"</span>, c);</div>
- <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">return</span> 0;</div>
- <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> }</div>
- <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
- <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">static</span> <span class="keyword">inline</span></div>
- <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keywordtype">bool</span> isBase64Char(<span class="keyword">const</span> <span class="keywordtype">char</span> c)</div>
- <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> {</div>
- <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">return</span> (std::isalnum(c) || (c == <span class="charliteral">'+'</span>) || (c == <span class="charliteral">'/'</span>));</div>
- <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> }</div>
- <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
- <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> } <span class="comment">// namespace DistrhoBase64Helpers</span></div>
- <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor">#endif</span></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> <span class="comment">// -----------------------------------------------------------------------</span></div>
- <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
- <div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">static</span> <span class="keyword">inline</span></div>
- <div class="line"><a name="l00067"></a><span class="lineno"> 67</span> std::vector<uint8_t> d_getChunkFromBase64String(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> base64string)</div>
- <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> {</div>
- <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  DISTRHO_SAFE_ASSERT_RETURN(base64string != <span class="keyword">nullptr</span>, std::vector<uint8_t>());</div>
- <div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
- <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  uint i=0, j=0;</div>
- <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  uint charArray3[3], charArray4[4];</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>  std::vector<uint8_t> ret;</div>
- <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  ret.reserve(std::strlen(base64string)*3/4 + 4);</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>  <span class="keywordflow">for</span> (std::size_t l=0, len=std::strlen(base64string); l<len; ++l)</div>
- <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  {</div>
- <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> c = base64string[l];</div>
- <div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
- <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (c == <span class="charliteral">'\0'</span> || c == <span class="charliteral">'='</span>)</div>
- <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">break</span>;</div>
- <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span> (c == <span class="charliteral">' '</span> || c == <span class="charliteral">'\n'</span>)</div>
- <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">continue</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>  DISTRHO_SAFE_ASSERT_CONTINUE(CarlaBase64Helpers::isBase64Char(c));</div>
- <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
- <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  charArray4[i++] = <span class="keyword">static_cast<</span>uint<span class="keyword">></span>(c);</div>
- <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
- <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">if</span> (i == 4)</div>
- <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  {</div>
- <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">for</span> (i=0; i<4; ++i)</div>
- <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  charArray4[i] = DistrhoBase64Helpers::findBase64CharIndex(static_cast<char>(charArray4[i]));</div>
- <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
- <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  charArray3[0] = (charArray4[0] << 2) + ((charArray4[1] & 0x30) >> 4);</div>
- <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  charArray3[1] = ((charArray4[1] & 0xf) << 4) + ((charArray4[2] & 0x3c) >> 2);</div>
- <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  charArray3[2] = ((charArray4[2] & 0x3) << 6) + charArray4[3];</div>
- <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
- <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">for</span> (i=0; i<3; ++i)</div>
- <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  ret.push_back(static_cast<uint8_t>(charArray3[i]));</div>
- <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
- <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  i = 0;</div>
- <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  }</div>
- <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div>
- <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
- <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (i != 0)</div>
- <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  {</div>
- <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">for</span> (j=0; j<i && j<4; ++j)</div>
- <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  charArray4[j] = DistrhoBase64Helpers::findBase64CharIndex(static_cast<char>(charArray4[j]));</div>
- <div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
- <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">for</span> (j=i; j<4; ++j)</div>
- <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  charArray4[j] = 0;</div>
- <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
- <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  charArray3[0] = (charArray4[0] << 2) + ((charArray4[1] & 0x30) >> 4);</div>
- <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  charArray3[1] = ((charArray4[1] & 0xf) << 4) + ((charArray4[2] & 0x3c) >> 2);</div>
- <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  charArray3[2] = ((charArray4[2] & 0x3) << 6) + charArray4[3];</div>
- <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
- <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">for</span> (j=0; i>0 && j<i-1; j++)</div>
- <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  ret.push_back(static_cast<uint8_t>(charArray3[j]));</div>
- <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div>
- <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
- <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> ret;</div>
- <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> }</div>
- <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
- <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">// -----------------------------------------------------------------------</span></div>
- <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
- <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="preprocessor">#endif // DISTRHO_BASE64_HPP_INCLUDED</span></div>
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