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 #include <regex.h>
  26
  27 class PathScanner
  28
  29 {
  30   public:
  31         std::vector<std::string *> *operator() (const std::string &dirpath,
  32                                                 bool (*filter)(const std::string &, void *arg),
  33                                                 void *arg,
  34                                                 bool match_fullpath = true,
  35                                                 bool return_fullpath = true,
  36                                                 long limit = -1,
  37                                                 bool recurse = false) {
  38                 return run_scan (dirpath,
  39                                  (bool (PathScanner::*)(const std::string &)) 0,
  40                                  filter,
  41                                  arg,
  42                                  match_fullpath,
  43                                  return_fullpath,
  44                                  limit, recurse);
  45         }
  46
  47         std::vector<std::string *> *operator() (const std::string &dirpath,
  48                                                 const std::string &regexp,
  49                                                 bool match_fullpath = true,
  50                                                 bool return_fullpath = true,
  51                                                 long limit = -1,
  52                                                 bool recurse = false);
  53
  54         std::string *find_first (const std::string &dirpath,
  55                                  const std::string &regexp,
  56                                  bool match_fullpath = true,
  57                                  bool return_fullpath = true);
  58
  59         std::string *find_first (const std::string &dirpath,
  60                                  bool (*filter)(const std::string &, void *),
  61                                  void *arg,
  62                                  bool match_fullpath = true,
  63                                  bool return_fullpath = true);
  64
  65   private:
  66         regex_t compiled_pattern;
  67
  68         bool regexp_filter (const std::string &str) {
  69                 return regexec (&compiled_pattern, str.c_str(), 0, 0, 0) == 0;
  70         }
  71
  72         std::vector<std::string *> *run_scan (const std::string &dirpath,
  73                                               bool (PathScanner::*mfilter) (const std::string &),
  74                                               bool (*filter)(const std::string &, void *),
  75                                               void *arg,
  76                                               bool match_fullpath,
  77                                               bool return_fullpath,
  78                                               long limit,
  79                                               bool recurse = false);
  80
  81         std::vector<std::string *> *run_scan_internal (std::vector<std::string*>*,
  82                                                        const std::string &dirpath,
  83                                                        bool (PathScanner::*mfilter) (const std::string &),
  84                                                        bool (*filter)(const std::string &, void *),
  85                                                        void *arg,
  86                                                        bool match_fullpath,
  87                                                        bool return_fullpath,
  88                                                        long limit,
  89                                                        bool recurse = false);
  90 };
  91
  92 #endif // __libmisc_pathscanner_h__