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<a href="csv__parser_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2015. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// modification, are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// * Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">// this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">// * Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">// this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment">// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment">// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment">// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment">// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment">// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment">// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment">// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment">// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment">// POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment">// Author: ryan.latture@gmail.com (Ryan Latture)</span></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="preprocessor">#ifndef CSV_PARSER_H</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#define CSV_PARSER_H</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &lt;boost/format.hpp&gt;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#include &lt;boost/tokenizer.hpp&gt;</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &lt;cstdlib&gt;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#include &lt;exception&gt;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="preprocessor">#include &lt;fstream&gt;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="preprocessor">#include &lt;iomanip&gt;</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="preprocessor">#include &lt;sstream&gt;</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></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;<span class="keyword">namespace </span><a class="code" href="namespacefea.html">fea</a> {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="namespacefea.html#a939c98c33c7d1076d1e9feed06b9b753"> 48</a></span>&#160; std::istream &amp;<a class="code" href="namespacefea.html#a939c98c33c7d1076d1e9feed06b9b753">operator&gt;&gt;</a>(std::istream &amp;ins, std::vector&lt;T&gt; &amp;record) {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="comment">// make sure that the returned record contains only the stuff we read now</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; record.clear();</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; <span class="comment">// read the entire line into a string (a CSV record is terminated by a newline)</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; std::string line;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; std::getline(ins, line);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; std::string empty;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; std::string separator_characters(<span class="stringliteral">&quot;, \t&quot;</span>);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; boost::escaped_list_separator&lt;char&gt; separators(empty, separator_characters, empty);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; boost::tokenizer&lt;boost::escaped_list_separator&lt;char&gt;&gt; tk(line, separators);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordflow">for</span> (boost::tokenizer&lt;boost::escaped_list_separator&lt;char&gt;&gt;::iterator i(tk.begin()); i != tk.end(); ++i) {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; T f = std::strtod(i-&gt;c_str(), 0);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; record.push_back(f);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; }</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">return</span> ins;</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="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="namespacefea.html#ac34163f744a2b10263263c4a4d4ba7d4"> 75</a></span>&#160; <span class="keyword">inline</span> std::istream &amp;<a class="code" href="namespacefea.html#a939c98c33c7d1076d1e9feed06b9b753">operator&gt;&gt;</a>(std::istream &amp;ins, std::vector&lt;std::vector&lt;T&gt; &gt; &amp;data) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="comment">// make sure that the returned data only contains the CSV data we read here</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; data.clear();</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="comment">// For every record we can read from the file, append it to our resulting data</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; std::vector&lt;T&gt; record;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">while</span> (ins &gt;&gt; record) {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; data.push_back(record);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; }</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; <span class="comment">// Again, return the argument stream as required for this kind of input stream overload.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keywordflow">return</span> ins;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;</div>
<div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classfea_1_1_c_s_v_parser.html"> 93</a></span>&#160; <span class="keyword">class </span><a class="code" href="classfea_1_1_c_s_v_parser.html">CSVParser</a> {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classfea_1_1_c_s_v_parser.html#a4c3a97a78d9ad2254eeb2682e8fa4070"> 103</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classfea_1_1_c_s_v_parser.html#a4c3a97a78d9ad2254eeb2682e8fa4070">parseToVector</a>(std::string filename, std::vector&lt;T&gt; &amp;data) {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; std::ifstream infile;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; infile.open(filename);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keywordflow">if</span> (infile.is_open()) {</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">try</span> {</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; infile &gt;&gt; data;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">catch</span> (std::exception &amp;e) {</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keywordflow">throw</span> std::runtime_error(</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; (boost::format(<span class="stringliteral">&quot;Error when parsing csv file %s.\nDetails from tokenizer:\n\t%s&quot;</span>) %</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; filename % e.what()).str()</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; );</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;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; infile.close();</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keywordflow">throw</span> std::runtime_error(</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; (boost::format(<span class="stringliteral">&quot;Error opening file %s&quot;</span>) % filename).str()</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; );</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; }</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="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="classfea_1_1_c_s_v_parser.html#a249d913f7e14f3946e376e2c7b346576"> 137</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classfea_1_1_c_s_v_parser.html#a249d913f7e14f3946e376e2c7b346576">write</a>(<span class="keyword">const</span> std::string &amp;filename,</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keyword">const</span> std::vector&lt;std::vector&lt;T&gt; &gt; &amp;data,</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> precision,</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keyword">const</span> std::string &amp;delimiter) {</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; std::ofstream output_file;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; output_file.open(filename);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="keywordtype">size_t</span> num_cols;</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> (!output_file.is_open()) {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">throw</span> std::runtime_error(</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; (boost::format(<span class="stringliteral">&quot;Error opening file %s&quot;</span>) % filename).str()</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; }</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; data.size(); ++i) {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; num_cols = data[i].size();</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> j = 0; j &lt; num_cols; ++j) {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; output_file &lt;&lt; std::fixed &lt;&lt; std::setprecision(precision) &lt;&lt; data[i][j];</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="keywordflow">if</span> (j &lt; num_cols - 1) {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; output_file &lt;&lt; delimiter;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; output_file &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</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; output_file.close();</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; };</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;} <span class="comment">// namespace fea</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="preprocessor">#endif //CSV_PARSER_H</span></div>
<div class="ttc" id="classfea_1_1_c_s_v_parser_html_a249d913f7e14f3946e376e2c7b346576"><div class="ttname"><a href="classfea_1_1_c_s_v_parser.html#a249d913f7e14f3946e376e2c7b346576">fea::CSVParser::write</a></div><div class="ttdeci">void write(const std::string &amp;filename, const std::vector&lt; std::vector&lt; T &gt; &gt; &amp;data, unsigned int precision, const std::string &amp;delimiter)</div><div class="ttdef"><b>Definition:</b> csv_parser.h:137</div></div>
<div class="ttc" id="classfea_1_1_c_s_v_parser_html_a4c3a97a78d9ad2254eeb2682e8fa4070"><div class="ttname"><a href="classfea_1_1_c_s_v_parser.html#a4c3a97a78d9ad2254eeb2682e8fa4070">fea::CSVParser::parseToVector</a></div><div class="ttdeci">void parseToVector(std::string filename, std::vector&lt; T &gt; &amp;data)</div><div class="ttdoc">parses the contents of file_name into data. </div><div class="ttdef"><b>Definition:</b> csv_parser.h:103</div></div>
<div class="ttc" id="namespacefea_html_a939c98c33c7d1076d1e9feed06b9b753"><div class="ttname"><a href="namespacefea.html#a939c98c33c7d1076d1e9feed06b9b753">fea::operator&gt;&gt;</a></div><div class="ttdeci">std::istream &amp; operator&gt;&gt;(std::istream &amp;ins, std::vector&lt; T &gt; &amp;record)</div><div class="ttdef"><b>Definition:</b> csv_parser.h:48</div></div>
<div class="ttc" id="classfea_1_1_c_s_v_parser_html"><div class="ttname"><a href="classfea_1_1_c_s_v_parser.html">fea::CSVParser</a></div><div class="ttdoc">Reads data from a csv file into an std::vector and writes the contents of an std::vector to a file...</div><div class="ttdef"><b>Definition:</b> csv_parser.h:93</div></div>
<div class="ttc" id="namespacefea_html"><div class="ttname"><a href="namespacefea.html">fea</a></div><div class="ttdef"><b>Definition:</b> containers.h:41</div></div>
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