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<title>LCOV - lcov.info - ept/popcon/local.cc</title>
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<tr><td class="title">LTP GCOV extension - code coverage report</td></tr>
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<td class="headerItem" width="20%">Current view:</td>
<td class="headerValue" width="80%" colspan=4><a href="../../index.html">directory</a> - <a href="index.html">ept/popcon</a> - local.cc</td>
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<td class="headerItem" width="20%">Test:</td>
<td class="headerValue" width="80%" colspan=4>lcov.info</td>
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<td class="headerItem" width="20%">Date:</td>
<td class="headerValue" width="20%">2008-08-14</td>
<td width="20%"></td>
<td class="headerItem" width="20%">Instrumented lines:</td>
<td class="headerValue" width="20%">66</td>
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<td class="headerItem" width="20%">Code covered:</td>
<td class="headerValue" width="20%">62.1 %</td>
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<td class="headerItem" width="20%">Executed lines:</td>
<td class="headerValue" width="20%">41</td>
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<td><pre class="source">
<span class="lineNum"> 1 </span> : /** @file
<span class="lineNum"> 2 </span> : * @author Enrico Zini <enrico@enricozini.org>
<span class="lineNum"> 3 </span> : * Correlate popcon data with local popcon information
<span class="lineNum"> 4 </span> : */
<span class="lineNum"> 5 </span> :
<span class="lineNum"> 6 </span> : /*
<span class="lineNum"> 7 </span> : * Copyright (C) 2007 Enrico Zini <enrico@debian.org>
<span class="lineNum"> 8 </span> : *
<span class="lineNum"> 9 </span> : * This program is free software; you can redistribute it and/or modify
<span class="lineNum"> 10 </span> : * it under the terms of the GNU General Public License as published by
<span class="lineNum"> 11 </span> : * the Free Software Foundation; either version 2 of the License, or
<span class="lineNum"> 12 </span> : * (at your option) any later version.
<span class="lineNum"> 13 </span> : *
<span class="lineNum"> 14 </span> : * This program is distributed in the hope that it will be useful,
<span class="lineNum"> 15 </span> : * but WITHOUT ANY WARRANTY; without even the implied warranty of
<span class="lineNum"> 16 </span> : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<span class="lineNum"> 17 </span> : * GNU General Public License for more details.
<span class="lineNum"> 18 </span> : *
<span class="lineNum"> 19 </span> : * You should have received a copy of the GNU General Public License
<span class="lineNum"> 20 </span> : * along with this program; if not, write to the Free Software
<span class="lineNum"> 21 </span> : * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
<span class="lineNum"> 22 </span> : */
<span class="lineNum"> 23 </span> :
<span class="lineNum"> 24 </span> : #include <ept/popcon/local.h>
<span class="lineNum"> 25 </span> : #include <ept/popcon/popcon.h>
<span class="lineNum"> 26 </span> : #include <ept/popcon/maint/path.h>
<span class="lineNum"> 27 </span> :
<span class="lineNum"> 28 </span> : #include <wibble/exception.h>
<span class="lineNum"> 29 </span> :
<span class="lineNum"> 30 </span> : #include <algorithm>
<span class="lineNum"> 31 </span> : #include <fstream>
<span class="lineNum"> 32 </span> : #include <cmath>
<span class="lineNum"> 33 </span> :
<span class="lineNum"> 34 </span> : //#include <iostream>
<span class="lineNum"> 35 </span> :
<span class="lineNum"> 36 </span> : using namespace std;
<span class="lineNum"> 37 </span> :
<span class="lineNum"> 38 </span> : namespace ept {
<span class="lineNum"> 39 </span> : namespace popcon {
<span class="lineNum"> 40 </span> :
<span class="lineNum"> 41 </span> : // Split a string where there are separators
<span class="lineNum"> 42 </span><span class="lineCov"> 1903 : static vector<string> split(const std::string& str, char sep = ' ')</span>
<span class="lineNum"> 43 </span> : {
<span class="lineNum"> 44 </span><span class="lineCov"> 1903 : vector<string> res;</span>
<span class="lineNum"> 45 </span><span class="lineCov"> 1903 : size_t start = 0;</span>
<span class="lineNum"> 46 </span><span class="lineCov"> 10435 : while (start < str.size())</span>
<span class="lineNum"> 47 </span> : {
<span class="lineNum"> 48 </span><span class="lineCov"> 8531 : size_t end = str.find(sep, start);</span>
<span class="lineNum"> 49 </span><span class="lineCov"> 8531 : if (end == string::npos)</span>
<span class="lineNum"> 50 </span> : {
<span class="lineNum"> 51 </span><span class="lineCov"> 1902 : res.push_back(str.substr(start));</span>
<span class="lineNum"> 52 </span><span class="lineCov"> 1902 : break;</span>
<span class="lineNum"> 53 </span> : }
<span class="lineNum"> 54 </span> : else
<span class="lineNum"> 55 </span> : {
<span class="lineNum"> 56 </span><span class="lineCov"> 6629 : res.push_back(str.substr(start, end-start));</span>
<span class="lineNum"> 57 </span><span class="lineCov"> 6629 : start = end + 1;</span>
<span class="lineNum"> 58 </span> : }
<span class="lineNum"> 59 </span> : }
<span class="lineNum"> 60 </span><span class="lineNoCov"> 0 : return res;</span>
<span class="lineNum"> 61 </span> : }
<span class="lineNum"> 62 </span> :
<span class="lineNum"> 63 </span> : // Reverse sort pairs by comparing their second element
<span class="lineNum"> 64 </span> : struct secondsort
<span class="lineNum"> 65 </span> : {
<span class="lineNum"> 66 </span><span class="lineNoCov"> 0 : bool operator()(const pair<string, float>& a, const pair<string, float>& b) const</span>
<span class="lineNum"> 67 </span> : {
<span class="lineNum"> 68 </span><span class="lineNoCov"> 0 : if (a.second == b.second)</span>
<span class="lineNum"> 69 </span><span class="lineNoCov"> 0 : return a.first > b.first;</span>
<span class="lineNum"> 70 </span> : else
<span class="lineNum"> 71 </span><span class="lineNoCov"> 0 : return a.second > b.second;</span>
<span class="lineNum"> 72 </span> : }
<span class="lineNum"> 73 </span> : };
<span class="lineNum"> 74 </span> :
<span class="lineNum"> 75 </span><span class="lineCov"> 1 : Local::Local(const std::string& file)</span>
<span class="lineNum"> 76 </span> : {
<span class="lineNum"> 77 </span><span class="lineCov"> 1 : m_timestamp = Path::timestamp(file);</span>
<span class="lineNum"> 78 </span><span class="lineCov"> 1 : if (m_timestamp == 0)</span>
<span class="lineNum"> 79 </span><span class="lineNoCov"> 0 : return;</span>
<span class="lineNum"> 80 </span> :
<span class="lineNum"> 81 </span><span class="lineCov"> 1 : ifstream in;</span>
<span class="lineNum"> 82 </span><span class="lineCov"> 1 : in.open(file.c_str());</span>
<span class="lineNum"> 83 </span><span class="lineCov"> 1 : if (!in.good())</span>
<span class="lineNum"> 84 </span><span class="lineNoCov"> 0 : throw wibble::exception::File(file, "opening file for reading");</span>
<span class="lineNum"> 85 </span> :
<span class="lineNum"> 86 </span><span class="lineCov"> 1907 : while (!in.eof())</span>
<span class="lineNum"> 87 </span> : {
<span class="lineNum"> 88 </span><span class="lineCov"> 1905 : std::string line;</span>
<span class="lineNum"> 89 </span><span class="lineCov"> 1905 : getline(in, line);</span>
<span class="lineNum"> 90 </span><span class="lineCov"> 1905 : if (line.substr(0, 10) == "POPULARITY")</span>
<span class="lineNum"> 91 </span><span class="lineCov"> 3 : continue;</span>
<span class="lineNum"> 92 </span><span class="lineCov"> 1904 : if (line.substr(0, 14) == "END-POPULARITY")</span>
<span class="lineNum"> 93 </span> : continue;
<span class="lineNum"> 94 </span><span class="lineCov"> 1903 : vector<string> data = split(line);</span>
<span class="lineNum"> 95 </span><span class="lineCov"> 1903 : if (data.size() < 4)</span>
<span class="lineNum"> 96 </span> : continue;
<span class="lineNum"> 97 </span><span class="lineCov"> 1902 : if (data[3] == "<NOFILES>")</span>
<span class="lineNum"> 98 </span> : // This is an empty / virtual package
<span class="lineNum"> 99 </span><span class="lineCov"> 979 : m_scores.insert(make_pair(data[2], 0.1));</span>
<span class="lineNum"> 100 </span><span class="lineCov"> 923 : else if (data.size() == 4)</span>
<span class="lineNum"> 101 </span> : // Package normally in use
<span class="lineNum"> 102 </span><span class="lineNoCov"> 0 : m_scores.insert(make_pair(data[2], 1.0));</span>
<span class="lineNum"> 103 </span><span class="lineCov"> 923 : else if (data[4] == "<OLD>")</span>
<span class="lineNum"> 104 </span> : // Unused packages
<span class="lineNum"> 105 </span><span class="lineCov"> 745 : m_scores.insert(make_pair(data[2], 0.3));</span>
<span class="lineNum"> 106 </span><span class="lineCov"> 178 : else if (data[4] == "<RECENT-CTIME>")</span>
<span class="lineNum"> 107 </span> : // Recently installed packages
<span class="lineNum"> 108 </span><span class="lineCov"> 178 : m_scores.insert(make_pair(data[2], 0.5));</span>
<span class="lineNum"> 109 </span><span class="lineCov"> 1 : }</span>
<span class="lineNum"> 110 </span><span class="lineNoCov"> 0 : }</span>
<span class="lineNum"> 111 </span> :
<span class="lineNum"> 112 </span><span class="lineCov"> 2 : float Local::score(const std::string& pkg) const</span>
<span class="lineNum"> 113 </span> : {
<span class="lineNum"> 114 </span><span class="lineCov"> 2 : std::map<std::string, float>::const_iterator i = m_scores.find(pkg);</span>
<span class="lineNum"> 115 </span><span class="lineCov"> 2 : if (i == m_scores.end())</span>
<span class="lineNum"> 116 </span><span class="lineNoCov"> 0 : return 0;</span>
<span class="lineNum"> 117 </span> : else
<span class="lineNum"> 118 </span><span class="lineCov"> 2 : return i->second;</span>
<span class="lineNum"> 119 </span> : }
<span class="lineNum"> 120 </span> :
<span class="lineNum"> 121 </span> : /**
<span class="lineNum"> 122 </span> : * Return the TFIDF score of the package computed against the popcon
<span class="lineNum"> 123 </span> : * information.
<span class="lineNum"> 124 </span> : */
<span class="lineNum"> 125 </span><span class="lineCov"> 1 : float Local::tfidf(const Popcon& popcon, const std::string& pkg) const</span>
<span class="lineNum"> 126 </span> : {
<span class="lineNum"> 127 </span><span class="lineCov"> 1 : float popconScore = popcon.score(pkg);</span>
<span class="lineNum"> 128 </span> : //cerr << pkg << ": " << score(pkg) << " * log(" << (float)popcon.submissions() << " / " << popconScore << ") = " << score(pkg) * log((float)popcon.submissions() / popconScore) << endl;
<span class="lineNum"> 129 </span><span class="lineCov"> 1 : if (popconScore == 0)</span>
<span class="lineNum"> 130 </span><span class="lineNoCov"> 0 : return 0;</span>
<span class="lineNum"> 131 </span> : else
<span class="lineNum"> 132 </span><span class="lineCov"> 1 : return score(pkg) * log((float)popcon.submissions() / popconScore);</span>
<span class="lineNum"> 133 </span> :
<span class="lineNum"> 134 </span> : }
<span class="lineNum"> 135 </span> :
<span class="lineNum"> 136 </span><span class="lineNoCov"> 0 : std::vector< std::pair<std::string, float> > Local::scores() const</span>
<span class="lineNum"> 137 </span> : {
<span class="lineNum"> 138 </span><span class="lineNoCov"> 0 : vector< pair<string, float> > res;</span>
<span class="lineNum"> 139 </span> : // Copy the scores in res
<span class="lineNum"> 140 </span><span class="lineNoCov"> 0 : copy(m_scores.begin(), m_scores.end(), back_inserter(res));</span>
<span class="lineNum"> 141 </span> : // Sort res by score
<span class="lineNum"> 142 </span><span class="lineNoCov"> 0 : sort(res.begin(), res.end(), secondsort());</span>
<span class="lineNum"> 143 </span><span class="lineNoCov"> 0 : return res;</span>
<span class="lineNum"> 144 </span> : }
<span class="lineNum"> 145 </span> :
<span class="lineNum"> 146 </span><span class="lineNoCov"> 0 : std::vector< std::pair<std::string, float> > Local::tfidf(const Popcon& popcon) const</span>
<span class="lineNum"> 147 </span> : {
<span class="lineNum"> 148 </span><span class="lineNoCov"> 0 : vector< pair<string, float> > res;</span>
<span class="lineNum"> 149 </span> : // Compute the tfidf scores and store them into res
<span class="lineNum"> 150 </span><span class="lineNoCov"> 0 : for (std::map<std::string, float>::const_iterator i = m_scores.begin();</span>
<span class="lineNum"> 151 </span> : i != m_scores.end(); ++i)
<span class="lineNum"> 152 </span> : {
<span class="lineNum"> 153 </span><span class="lineNoCov"> 0 : float popconScore = popcon.score(i->first);</span>
<span class="lineNum"> 154 </span><span class="lineNoCov"> 0 : if (popconScore == 0)</span>
<span class="lineNum"> 155 </span><span class="lineNoCov"> 0 : res.push_back(make_pair(i->first, 0.0f));</span>
<span class="lineNum"> 156 </span> : else
<span class="lineNum"> 157 </span> : res.push_back(make_pair(i->first,
<span class="lineNum"> 158 </span><span class="lineNoCov"> 0 : i->second * log((float)popcon.submissions() / popconScore)));</span>
<span class="lineNum"> 159 </span> : }
<span class="lineNum"> 160 </span> : // Sort res by score
<span class="lineNum"> 161 </span><span class="lineNoCov"> 0 : sort(res.begin(), res.end(), secondsort());</span>
<span class="lineNum"> 162 </span><span class="lineNoCov"> 0 : return res;</span>
<span class="lineNum"> 163 </span> : }
<span class="lineNum"> 164 </span> :
<span class="lineNum"> 165 </span> : }
<span class="lineNum"> 166 </span><span class="lineCov"> 6 : }</span>
<span class="lineNum"> 167 </span> :
<span class="lineNum"> 168 </span> : // vim:set ts=4 sw=4:
</pre>
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<tr><td class="versionInfo">Generated by: <a href="http://ltp.sourceforge.net/coverage/lcov.php" target="_parent">LTP GCOV extension version 1.6</a></td></tr>
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