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<div class="title">Filesystem.cpp</div> </div>
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<a href="_filesystem_8cpp.html">Go to the documentation of this file.</a><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">// Copyright © 2020,2023 Arm Ltd and Contributors. All rights reserved.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// SPDX-License-Identifier: MIT</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="preprocessor">#if !defined(ARMNN_DISABLE_FILESYSTEM)</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>  </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <<a class="code" href="_exceptions_8hpp.html">armnn/Exceptions.hpp</a>></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <<a class="code" href="_filesystem_8hpp.html">armnnUtils/Filesystem.hpp</a>></span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">namespace </span><a class="code" href="namespacearmnn_utils.html">armnnUtils</a></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> {</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="keyword">namespace </span>Filesystem</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> {</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"></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> <span class="comment"> * @brief Construct a temporary file name.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Given a specified file name construct a path to that file in the</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * system temporary directory. If the file already exists it is deleted. This</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * could throw filesystem_error exceptions.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * @param fileName the file name required in the temporary directory.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * @return path consisting of system temporary directory and file name.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="namespacearmnn_utils_1_1_filesystem.html#a606d65835d72a332109c3c9f96a01b8a"> 25</a></span> fs::path <a class="code" href="namespacearmnn_utils_1_1_filesystem.html#a606d65835d72a332109c3c9f96a01b8a">NamedTempFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* fileName)</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  fs::path tmpDir = fs::temp_directory_path();</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  fs::path namedTempFile{tmpDir / fileName};</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordflow">if</span> (fs::exists(namedTempFile))</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  {</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  fs::remove(namedTempFile);</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  }</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">return</span> namedTempFile;</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="comment"></span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * @brief Construct a temporary directory</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * Given a specified directory name construct a path in the</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * system temporary directory. If the directory already exists, it is deleted,</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * otherwise create it. This could throw filesystem_error exceptions.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * @param path is the path required in the temporary directory.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * @return path consisting of system temporary directory.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * @throws RuntimeException if the directory cannot be created or exists but cannot be removed.</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="namespacearmnn_utils_1_1_filesystem.html#a0477efb2c6f5b41fbfe937fef6db312d"> 47</a></span> std::string <a class="code" href="namespacearmnn_utils_1_1_filesystem.html#a0477efb2c6f5b41fbfe937fef6db312d">CreateDirectory</a>(std::string path)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// This line is very unlikely to throw an exception.</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  fs::path tmpDir = fs::temp_directory_path();</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  std::string full_path = tmpDir.generic_string() + path;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// This could throw a file permission exception.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="namespacearmnn_utils_1_1_filesystem.html#aa994467360962e6efc1c4e0d8f293e8c">RemoveDirectoryAndContents</a>(full_path);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor">#if defined(_WIN32)</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  result = _mkdir(full_path.c_str()); <span class="comment">// can be used on Windows</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  armnn::ConditionalThrow<armnn::RuntimeException>((result == 0), <span class="stringliteral">"Was unable to create temporary directory"</span>);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">try</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>  <span class="keywordflow">if</span>(!fs::create_directory(full_path))</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_runtime_exception.html">armnn::RuntimeException</a>(<span class="stringliteral">"Unable to create directory: "</span> + full_path);</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="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">catch</span> (<span class="keyword">const</span> std::system_error& e)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  std::string <a class="code" href="namespacearmnn.html#a4dc0adc6737b5944e7671bee71788407acb5e100e5a9a3e7f6d1fd97512215282">error</a> = <span class="stringliteral">"Unable to create directory. Reason: "</span>;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <a class="code" href="namespacearmnn.html#a4dc0adc6737b5944e7671bee71788407acb5e100e5a9a3e7f6d1fd97512215282">error</a>.append(e.what());</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_runtime_exception.html">armnn::RuntimeException</a>(<a class="code" href="namespacearmnn.html#a4dc0adc6737b5944e7671bee71788407acb5e100e5a9a3e7f6d1fd97512215282">error</a>);</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> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span> full_path + <span class="stringliteral">"/"</span>;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> }</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * @brief Remove a directory and its contents.</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> * Given a directory path delete it's contents and the directory. If the specified directory doesn't exist this</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> * does nothing. If any item cannot be removed this will throw a RuntimeException.</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * @param full_path</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="namespacearmnn_utils_1_1_filesystem.html#aa994467360962e6efc1c4e0d8f293e8c"> 84</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacearmnn_utils_1_1_filesystem.html#aa994467360962e6efc1c4e0d8f293e8c">RemoveDirectoryAndContents</a>(<span class="keyword">const</span> std::string& path)</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="keywordflow">if</span> (fs::exists(path))</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>  <span class="keywordflow">try</span></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="comment">// This could throw an exception on a multi-user system.</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  fs::remove_all(path);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  }</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">catch</span> (<span class="keyword">const</span> std::system_error& e)</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>  std::string <a class="code" href="namespacearmnn.html#a4dc0adc6737b5944e7671bee71788407acb5e100e5a9a3e7f6d1fd97512215282">error</a> = <span class="stringliteral">"Directory exists and cannot be removed. Reason: "</span>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="namespacearmnn.html#a4dc0adc6737b5944e7671bee71788407acb5e100e5a9a3e7f6d1fd97512215282">error</a>.append(e.what());</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_runtime_exception.html">armnn::RuntimeException</a>(<a class="code" href="namespacearmnn.html#a4dc0adc6737b5944e7671bee71788407acb5e100e5a9a3e7f6d1fd97512215282">error</a>);</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>  }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  </div>
<div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="namespacearmnn_utils_1_1_filesystem.html#a32ff1b057109ad1128fd1ac82ed7e9a7"> 102</a></span> <a class="code" href="namespacearmnn_utils_1_1_filesystem.html#ac43ab637ed192811c3b20c71990fd871">FileContents</a> <a class="code" href="namespacearmnn_utils_1_1_filesystem.html#a32ff1b057109ad1128fd1ac82ed7e9a7">ReadFileContentsIntoString</a>(<span class="keyword">const</span> std::string& path) {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (!fs::exists(path))</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>  <span class="keywordflow">throw</span> <a class="code" href="classarmnn_1_1_runtime_exception.html">armnn::RuntimeException</a>(<span class="stringliteral">"Path does not exist: "</span> + path);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  std::ifstream input_file(path);</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  armnn::ConditionalThrow<armnn::RuntimeException>((input_file.is_open()), <span class="stringliteral">"Could not read file contents"</span>);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">return</span> <a class="code" href="namespacearmnn_utils_1_1_filesystem.html#ac43ab637ed192811c3b20c71990fd871">FileContents</a>((std::istreambuf_iterator<char>(input_file)), std::istreambuf_iterator<char>());</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>  </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> } <span class="comment">// namespace armnnUtils</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> } <span class="comment">// namespace Filesystem</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#endif // !defined(ARMNN_DISABLE_FILESYSTEM)</span></div>
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