LCOV - lcov.info - ept/debtags/maint/pkgid.h

LTP GCOV extension - code coverage report
Current view: | directory - ept/debtags/maint - pkgid.h
Test: | lcov.info
Date: | 2008-08-14 |  | Instrumented lines: | 6
Code covered: | 83.3 % |  | Executed lines: | 5

           1                 : // -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
           2                 : #ifndef EPT_DEBTAGS_PKGID_H
           3                 : #define EPT_DEBTAGS_PKGID_H
           4                 :
           5                 : /** @file
           6                 :  * @author Enrico Zini <enrico@enricozini.org>
           7                 :  * Quick map from package IDs to package names
           8                 :  */
           9                 :
          10                 : /*
          11                 :  * Copyright (C) 2003-2007  Enrico Zini <enrico@debian.org>
          12                 :  *
          13                 :  * This program is free software; you can redistribute it and/or modify
          14                 :  * it under the terms of the GNU General Public License as published by
          15                 :  * the Free Software Foundation; either version 2 of the License, or
          16                 :  * (at your option) any later version.
          17                 :  *
          18                 :  * This program is distributed in the hope that it will be useful,
          19                 :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
          20                 :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
          21                 :  * GNU General Public License for more details.
          22                 :  *
          23                 :  * You should have received a copy of the GNU General Public License
          24                 :  * along with this program; if not, write to the Free Software
          25                 :  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
          26                 :  */
          27                 :
          28                 : #include <tagcoll/diskindex/mmap.h>
          29                 : #include <string>
          30                 :
          31                 : namespace ept {
          32                 : namespace debtags {
          33                 :
          34                 : /**
          35                 :  * Maps Packages to IDs and vice-versa.
          36                 :  *
          37                 :  * This is used in building the Debtags fast index, which works representing
          38                 :  * tags and packages as int IDs
          39                 :  */
          40                 : class PkgId : public tagcoll::diskindex::MMap
          41              11 : {
          42                 :         tagcoll::diskindex::MasterMMap mastermmap;
          43                 :         time_t m_timestamp;
          44                 :
          45                 : public:
          46                 :         PkgId();
          47                 :         PkgId(const tagcoll::diskindex::MasterMMap& master, size_t idx);
          48                 :         PkgId(const char* buf, int size);
          49                 :
          50                 :         /// Get the timestamp of when the index was last updated
          51                 :         time_t timestamp() const { return m_timestamp; }
          52                 :
          53                 :         /// Get the number of packages in the index
          54           63445 :         size_t size() const { return m_buf ? *(int*)m_buf / sizeof(int) : 0; }
          55                 :
          56                 :         /**
          57                 :          * Get the ID of a package given its name.
          58                 :          *
          59                 :          * If not found, returns -1.
          60                 :          */
          61                 :         int byName(const std::string& name) const;
          62                 :
          63                 :         /**
          64                 :          * Get a package name given its ID.
          65                 :          *
          66                 :          * If not found, returns the empty string.
          67                 :          */
          68         1128365 :         std::string byID(int id) const
          69                 :         {
          70         1128365 :                 if (id >= 0 || static_cast<unsigned>(id) < size())
          71         1128365 :                         return std::string(m_buf + ((int*)m_buf)[id]);
          72               0 :                 return std::string();
          73                 :         }
          74                 :
          75                 :         /// Get the number of packages in the index
          76                 :         int size(int id) const
          77                 :         {
          78                 :                 if (id < 0 || (unsigned)id >= size())
          79                 :                         return 0;
          80                 :                 if ((unsigned)id == size() - 1)
          81                 :                         return m_size - ((int*)m_buf)[id] - 1;
          82                 :                 else
          83                 :                         return ((int*)m_buf)[id + 1] - ((int*)m_buf)[id] - 1;
          84                 :         }
          85                 : };
          86                 :
          87                 : }
          88                 : }
          89                 :
          90                 : // vim:set ts=4 sw=4:
          91                 : #endif

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