libs/pbd/pbd/pathscanner.h

   1 /*
   2     Copyright (C) 2000-2007 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef __libmisc_pathscanner_h__
  21 #define __libmisc_pathscanner_h__
  22
  23 #include <vector>
  24 #include <string>
  25 #ifdef COMPILER_MSVC
  26 #include <ardourext/misc.h>
  27 #else
  28 #include <regex.h>
  29 #endif
  30
  31 #include "pbd/libpbd_visibility.h"
  32
  33 class LIBPBD_API PathScanner
  34
  35 {
  36   public:
  37         std::vector<std::string> operator() (const std::string &dirpath,
  38                                              bool (*filter)(const std::string &, void *arg),
  39                                              void *arg,
  40                                              bool match_fullpath = true,
  41                                              bool return_fullpath = true,
  42                                              long limit = -1,
  43                                              bool recurse = false) {
  44                 return run_scan (dirpath,
  45                                  (bool (PathScanner::*)(const std::string &)) 0,
  46                                  filter,
  47                                  arg,
  48                                  match_fullpath,
  49                                  return_fullpath,
  50                                  limit, recurse);
  51         }
  52
  53         std::vector<std::string> operator() (const std::string &dirpath,
  54                                              const std::string &regexp,
  55                                              bool match_fullpath = true,
  56                                              bool return_fullpath = true,
  57                                              long limit = -1,
  58                                              bool recurse = false);
  59
  60         std::string find_first (const std::string &dirpath,
  61                                 const std::string &regexp,
  62                                 bool match_fullpath = true,
  63                                 bool return_fullpath = true);
  64
  65         std::string find_first (const std::string &dirpath,
  66                                 bool (*filter)(const std::string &, void *),
  67                                 void *arg,
  68                                 bool match_fullpath = true,
  69                                 bool return_fullpath = true);
  70
  71   private:
  72         regex_t compiled_pattern;
  73
  74         bool regexp_filter (const std::string &str) {
  75                 return regexec (&compiled_pattern, str.c_str(), 0, 0, 0) == 0;
  76         }
  77
  78         std::vector<std::string> run_scan (const std::string &dirpath,
  79                                            bool (PathScanner::*mfilter) (const std::string &),
  80                                            bool (*filter)(const std::string &, void *),
  81                                            void *arg,
  82                                            bool match_fullpath,
  83                                            bool return_fullpath,
  84                                            long limit,
  85                                            bool recurse = false);
  86
  87         void run_scan_internal (std::vector<std::string>&,
  88                                 const std::string &dirpath,
  89                                 bool (PathScanner::*mfilter) (const std::string &),
  90                                 bool (*filter)(const std::string &, void *),
  91                                 void *arg,
  92                                 bool match_fullpath,
  93                                 bool return_fullpath,
  94                                 long limit,
  95                                 bool recurse = false);
  96 };
  97
  98 #endif // __libmisc_pathscanner_h__