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/*
    Copyright (C) 2000-2007 Paul Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __libmisc_pathscanner_h__
#define __libmisc_pathscanner_h__

#include <vector>
#include <string>
#ifdef COMPILER_MSVC
#include <ardourext/misc.h>
#else
#include <regex.h>
#endif

#include "pbd/libpbd_visibility.h"

class LIBPBD_API PathScanner

{
  public:
	std::vector<std::string> operator() (const std::string &dirpath,
	                                     bool (*filter)(const std::string &, void *arg),
	                                     void *arg,
	                                     bool match_fullpath = true,
	                                     bool return_fullpath = true,
	                                     long limit = -1,
	                                     bool recurse = false) {
		return run_scan (dirpath,
				 (bool (PathScanner::*)(const std::string &)) 0, 
				 filter, 
				 arg,
				 match_fullpath,
				 return_fullpath, 
				 limit, recurse);
	}

	std::vector<std::string> operator() (const std::string &dirpath,
	                                     const std::string &regexp,
	                                     bool match_fullpath = true,
	                                     bool return_fullpath = true,
	                                     long limit = -1,
	                                     bool recurse = false);
	
	std::string find_first (const std::string &dirpath,
	                        const std::string &regexp,
	                        bool match_fullpath = true,
	                        bool return_fullpath = true);
	
	std::string find_first (const std::string &dirpath,
	                        bool (*filter)(const std::string &, void *),
	                        void *arg,
	                        bool match_fullpath = true,
	                        bool return_fullpath = true);
	
  private:
	regex_t compiled_pattern;
	
	bool regexp_filter (const std::string &str) {
		return regexec (&compiled_pattern, str.c_str(), 0, 0, 0) == 0;
	}
	
	std::vector<std::string> run_scan (const std::string &dirpath,
	                                   bool (PathScanner::*mfilter) (const std::string &),
	                                   bool (*filter)(const std::string &, void *),
	                                   void *arg,
	                                   bool match_fullpath,
	                                   bool return_fullpath,
	                                   long limit,
	                                   bool recurse = false);

	void run_scan_internal (std::vector<std::string>&,
	                        const std::string &dirpath,
	                        bool (PathScanner::*mfilter) (const std::string &),
	                        bool (*filter)(const std::string &, void *),
	                        void *arg,
	                        bool match_fullpath,
	                        bool return_fullpath,
	                        long limit,
	                        bool recurse = false);
};

#endif // __libmisc_pathscanner_h__