LCOV - lcov.info - ept/core/xapian.cpp

LTP GCOV extension - code coverage report
Current view: | directory - ept/core - xapian.cpp
Test: | lcov.info
Date: | 2008-08-14 |  | Instrumented lines: | 56
Code covered: | 21.4 % |  | Executed lines: | 12

           1                 : // -*- C++ -*- (c) 2007 Enrico Zini <enrico@enricozini.org>
           2                 : //                      Petr Rockai <me@mornfall.net>
           3                 :
           4                 : /*
           5                 :  * Copyright (C) 2007  Enrico Zini <enrico@debian.org>
           6                 :  *
           7                 :  * This program is free software; you can redistribute it and/or modify
           8                 :  * it under the terms of the GNU General Public License as published by
           9                 :  * the Free Software Foundation; either version 2 of the License, or
          10                 :  * (at your option) any later version.
          11                 :  *
          12                 :  * This program is distributed in the hope that it will be useful,
          13                 :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
          14                 :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
          15                 :  * GNU General Public License for more details.
          16                 :  *
          17                 :  * You should have received a copy of the GNU General Public License
          18                 :  * along with this program; if not, write to the Free Software
          19                 :  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
          20                 :  */
          21                 :
          22                 : #include <ept/core/xapian.h>
          23                 : #include <ept/core/apt.h>
          24                 : #include <ept/core/apt/record.h>
          25                 :
          26                 : #include <ept/textsearch/maint/path.h>
          27                 :
          28                 : #include <wibble/regexp.h>
          29                 : #include <cctype>
          30                 : #include <cmath>
          31                 :
          32                 : #include <xapian/queryparser.h>
          33                 : #include <xapian/base.h>
          34                 :
          35                 : #include <algorithm>
          36                 :
          37                 : #include <iostream>
          38                 :
          39                 : using namespace std;
          40                 : using namespace ept;
          41                 : // using namespace ept::debtags;
          42                 :
          43                 : namespace ept {
          44                 : namespace core {
          45                 : namespace xapian {
          46                 :
          47                 : size_t max_index = 0;
          48                 :
          49               4 : Source::Source()
          50               4 :     : m_stem("en"), m_opened( false )
          51                 : {
          52               4 : }
          53                 :
          54               9 : time_t Source::timestamp() const {
          55               9 :     return textsearch::Path::indexTimestamp();
          56                 : }
          57                 :
          58               9 : void Source::open() const {
          59               9 :     if (timestamp()) {
          60               9 :         std::string path = textsearch::Path::index();
          61               9 :         m_db = Xapian::Database( path );
          62               9 :         m_opened = true;
          63                 :     }
          64               9 : }
          65                 :
          66               0 : std::string Source::toLower(const std::string& str)
          67                 : {
          68               0 :     std::string res;
          69               0 :     res.reserve(str.size());
          70               0 :     for (std::string::const_iterator i = str.begin(); i != str.end(); ++i)
          71               0 :         res += tolower(*i);
          72               0 :     return res;
          73                 : }
          74                 :
          75                 : void Source::normalize_and_add(Xapian::Document& doc, const std::string& term,
          76               0 :                                int& /* pos */) const
          77                 : {
          78               0 :     string t = Source::toLower(term);
          79               0 :     string s = m_stem(t);
          80               0 :     doc.add_term(t);
          81               0 :     if (s != t)
          82               0 :         doc.add_term(s);
          83               0 : }
          84                 :
          85               0 : Xapian::docid Source::docidByName(const std::string& pkgname) const
          86                 : {
          87               0 :     Xapian::PostingIterator i = m_db.postlist_begin("pkg:"+pkgname);
          88               0 :     if (i == m_db.postlist_end("pkg:"+pkgname))
          89               0 :         return 0;
          90                 :     else
          91               0 :         return *i;
          92                 : }
          93                 :
          94               0 : Xapian::Query Source::makeRelatedQuery(const std::string& pkgname) const
          95                 : {
          96               0 :     Xapian::Enquire enquire(db());
          97                 :
          98                 :     // Retrieve the document for the given package
          99               0 :     enquire.set_query(Xapian::Query("pkg:"+pkgname));
         100               0 :     Xapian::MSet matches = enquire.get_mset(0, 1);
         101               0 :     Xapian::MSetIterator mi = matches.begin();
         102               0 :     if (mi == matches.end()) return Xapian::Query();
         103               0 :     Xapian::Document doc = mi.get_document();
         104                 :
         105                 :     // Return the query to get the list of similar documents
         106               0 :     return Xapian::Query(Xapian::Query::OP_OR, doc.termlist_begin(), doc.termlist_end());
         107                 : }
         108                 :
         109                 : double Source::getDoubleValue(const std::string& pkgname,
         110               0 :                               Xapian::valueno val_id) const
         111                 : {
         112               0 :     Xapian::docid id = docidByName(pkgname);
         113               0 :     if (id == 0)
         114               0 :         return 0.0;
         115               0 :     Xapian::Document doc = db().get_document(id);
         116               0 :     string val = doc.get_value(val_id);
         117               0 :     if (val.empty())
         118               0 :         return 0.0;
         119                 :     else
         120               0 :         return Xapian::sortable_unserialise(val);
         121                 : }
         122                 :
         123                 : int Source::getIntValue(const std::string& pkgname,
         124               0 :                         Xapian::valueno val_id) const
         125                 : {
         126               0 :     Xapian::docid id = docidByName(pkgname);
         127               0 :     if (id == 0)
         128               0 :         return 0;
         129               0 :     Xapian::Document doc = db().get_document(id);
         130               0 :     string val = doc.get_value(val_id);
         131               0 :     if (val.empty())
         132               0 :         return 0;
         133                 :     else
         134               0 :         return (int)nearbyint(Xapian::sortable_unserialise(val));
         135                 : }
         136                 :
         137                 : }
         138                 : }
         139               3 : }
         140                 :
         141                 : // vim:set ts=4 sw=4:

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