src/DepTable.h

   1 // -*- C++ -*-
   2 /**
   3  * \file DepTable.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #ifndef DEP_TABLE_H
  14 #define DEP_TABLE_H
  15
  16 #include "support/FileName.h"
  17
  18 #include <map>
  19 #include <string>
  20
  21
  22 namespace lyx {
  23
  24 ///
  25 class DepTable {
  26 public:
  27         /** This one is a little bit harder since we need the absolute
  28           filename. Should we insert files with .sty .cls etc as
  29           extension? */
  30         void insert(support::FileName const & f, bool upd = false);
  31         ///
  32         void update();
  33
  34         ///
  35         void write(support::FileName const & f) const;
  36         /// returns true if dep file was read successfully
  37         bool read(support::FileName const & f);
  38         /// returns true if any of the files has changed
  39         bool sumchange() const;
  40         /// return true if fil has changed.
  41         bool haschanged(support::FileName const & fil) const;
  42         /// return true if a file with extension ext has changed.
  43         bool extchanged(std::string const & ext) const;
  44         ///
  45         bool exist(support::FileName const & fil) const;
  46         /// returns true if any files with ext exist
  47         bool ext_exist(std::string const & ext) const;
  48         ///
  49         void remove_files_with_extension(std::string const &);
  50         ///
  51         void remove_file(support::FileName const &);
  52 private:
  53         ///
  54         class dep_info {
  55         public:
  56                 /// Previously calculated CRC value
  57                 unsigned long crc_prev;
  58                 /// Current CRC value - only re-computed if mtime has changed.
  59                 unsigned long crc_cur;
  60                 /// mtime from last time current CRC was calculated.
  61                 long mtime_cur;
  62                 ///
  63                 bool changed() const;
  64         };
  65         ///
  66         typedef std::map<support::FileName, dep_info> DepList;
  67         ///
  68         DepList deplist;
  69 };
  70
  71
  72 } // namespace lyx
  73
  74 #endif