src/common/File.h

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2008 - 2012 Grigor Iliev, Benno Senoner                 *
 *                                                                         *
 *   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., 51 Franklin St, Fifth Floor, Boston,                *
 *   MA  02110-1301  USA                                                   *
 ***************************************************************************/

#ifndef LS_FILE_H
#define LS_FILE_H

#include <memory>
#include <string>
#include <vector>

#include "Mutex.h"
#include <sys/stat.h>

namespace LinuxSampler {

#if __cplusplus >= 201103L && !CONFIG_NO_CPP11STL
    typedef std::unique_ptr<std::vector<std::string>> FileListPtr;
#else
    typedef std::auto_ptr<std::vector<std::string> > FileListPtr;
#endif

    class File {
        public:
            class DirectoryWalker {
                public:
                    virtual void DirectoryEntry(std::string Path) = 0;
                    virtual void FileEntry(std::string Path) = 0;
            };
            
            File(std::string FileName);
            
            /**
             * Tests whether the file exists.
             */
            bool Exist();

            /**
             * Provides appropriate error message if failed to retrieve
             * information about the specified file, in which case Exist() returns false.
             */
            std::string GetErrorMsg();

            /**
             * Tests whether it's a regular file.
             */
            bool IsFile();

            /**
             * Tests whether it's a directory.
             */
            bool IsDirectory();
            
            /**
             * Returns the size of the file in bytes.
             */
            unsigned long GetSize();

            /**
             * Returns the names of the regular files in the specified directory.
             * @throws Exception If failed to list the directory content.
             */
            static FileListPtr GetFiles(std::string Dir);
            
            /**
             * Walks through the directory tree that is located under the
             * directory <b>Dir</b>, and calls <b>pWalker->DirectoryEntry()</b>
             * once for each directory in the tree and <b>pWalker->FileEntry()</b>
             * once for each file in the tree. Note that this method can be 
             * recursively invoked from within the callback functions
             * <b>pWalker->DirectoryEntry()</b> and <b>pWalker->FileEntry()</b>.
             * @throws Exception If the specified path is missing or is not a directory.
             * Exception is also thrown, and the directory tree walk is stopped,
             * if <b>pWalker->DirectoryEntry()</b> or <b>pWalker->FileEntry()</b>
             * throws Exception.
             */
            static void WalkDirectoryTree(std::string Dir, DirectoryWalker* pWalker);

            static const char DirSeparator;
            static const char PathSeparator;

        private:
            bool bExist;
            std::string ErrorMsg;
            static Mutex DirectoryWalkerMutex;
            static std::vector<DirectoryWalker*> DirectoryWalkers;
            static std::string DWErrorMsg;

            struct stat Status;
#ifdef WIN32
            static void WalkDirectoryTreeSub(std::string Dir, DirectoryWalker* pWalker);
#else
            static int FtwCallback(const char* fpath, const struct stat* sb, int typeflag);
#endif
    };
}

#endif
1	iliev	1717	/***************************************************************************
2			* *
3	persson	2313	* Copyright (C) 2008 - 2012 Grigor Iliev, Benno Senoner *
4	iliev	1717	* *
5			* This program is free software; you can redistribute it and/or modify *
6			* it under the terms of the GNU General Public License as published by *
7			* the Free Software Foundation; either version 2 of the License, or *
8			* (at your option) any later version. *
9			* *
10			* This program is distributed in the hope that it will be useful, *
11			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
12			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13			* GNU General Public License for more details. *
14			* *
15			* You should have received a copy of the GNU General Public License *
16			* along with this program; if not, write to the Free Software *
17			* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
18			* MA 02110-1301 USA *
19			***************************************************************************/
20
21			#ifndef LS_FILE_H
22			#define LS_FILE_H
23
24	persson	1726	#include <memory>
25	iliev	1717	#include <string>
26			#include <vector>
27
28			#include "Mutex.h"
29			#include <sys/stat.h>
30
31			namespace LinuxSampler {
32
33	schoenebeck	3056	#if __cplusplus >= 201103L && !CONFIG_NO_CPP11STL
34	persson	2840	typedef std::unique_ptr<std::vector<std::string>> FileListPtr;
35			#else
36	iliev	1717	typedef std::auto_ptr<std::vector<std::string> > FileListPtr;
37	persson	2840	#endif
38	iliev	1717
39			class File {
40			public:
41			class DirectoryWalker {
42			public:
43			virtual void DirectoryEntry(std::string Path) = 0;
44			virtual void FileEntry(std::string Path) = 0;
45			};
46
47			File(std::string FileName);
48
49			/**
50			* Tests whether the file exists.
51			*/
52			bool Exist();
53
54			/**
55			* Provides appropriate error message if failed to retrieve
56			* information about the specified file, in which case Exist() returns false.
57			*/
58			std::string GetErrorMsg();
59
60			/**
61			* Tests whether it's a regular file.
62			*/
63			bool IsFile();
64
65			/**
66			* Tests whether it's a directory.
67			*/
68			bool IsDirectory();
69
70			/**
71			* Returns the size of the file in bytes.
72			*/
73			unsigned long GetSize();
74
75			/**
76			* Returns the names of the regular files in the specified directory.
77			* @throws Exception If failed to list the directory content.
78			*/
79			static FileListPtr GetFiles(std::string Dir);
80
81			/**
82			* Walks through the directory tree that is located under the
83			* directory <b>Dir</b>, and calls <b>pWalker->DirectoryEntry()</b>
84			* once for each directory in the tree and <b>pWalker->FileEntry()</b>
85			* once for each file in the tree. Note that this method can be
86			* recursively invoked from within the callback functions
87			* <b>pWalker->DirectoryEntry()</b> and <b>pWalker->FileEntry()</b>.
88			* @throws Exception If the specified path is missing or is not a directory.
89			* Exception is also thrown, and the directory tree walk is stopped,
90			* if <b>pWalker->DirectoryEntry()</b> or <b>pWalker->FileEntry()</b>
91			* throws Exception.
92			*/
93			static void WalkDirectoryTree(std::string Dir, DirectoryWalker* pWalker);
94	iliev	1781
95	persson	2313	static const char DirSeparator;
96			static const char PathSeparator;
97	iliev	1717
98			private:
99			bool bExist;
100			std::string ErrorMsg;
101			static Mutex DirectoryWalkerMutex;
102			static std::vector<DirectoryWalker*> DirectoryWalkers;
103			static std::string DWErrorMsg;
104
105			struct stat Status;
106	persson	1943	#ifdef WIN32
107			static void WalkDirectoryTreeSub(std::string Dir, DirectoryWalker* pWalker);
108			#else
109	iliev	1717	static int FtwCallback(const char* fpath, const struct stat* sb, int typeflag);
110	persson	1943	#endif
111	iliev	1717	};
112			}
113
114			#endif