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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