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