src/common/File.cpp

/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2008 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                                                   *
 ***************************************************************************/

#include "File.h"

#include <errno.h>
#include <sstream>

#include "Exception.h"
#include "global_private.h"

#if WIN32

#else
#include <dirent.h>
#include <ftw.h>
#endif

namespace LinuxSampler {

#if WIN32
    char File::DirSeparator = '\\';
#else
    char File::DirSeparator = '/';
#endif

    Mutex File::DirectoryWalkerMutex = Mutex();
    std::vector<File::DirectoryWalker*> File::DirectoryWalkers;
    std::string File::DWErrorMsg;

    File::File(std::string Path) {
        #if WIN32
        
        #else
            bExist = !stat(Path.c_str(), &Status);
            if(!bExist) ErrorMsg = strerror(errno);
        #endif
    }
    
    bool File::Exist() {
        return bExist;
    }
    
    std::string File::GetErrorMsg() {
        return ErrorMsg;
    }
    
    bool File::IsFile() {
        if(!Exist()) return false;
        
        #if WIN32
        
        #else
            return S_ISREG(Status.st_mode);
        #endif
    }
    
    bool File::IsDirectory() {
        if(!Exist()) return false;
        
        #if WIN32
        
        #else
            return S_ISDIR(Status.st_mode);
        #endif
    }
    
    unsigned long File::GetSize() {
        if(!Exist()) return 0;
        
        #if WIN32
        
        #else
            return Status.st_size;
        #endif       
    }
    
    FileListPtr File::GetFiles(std::string Dir) {
        #if WIN32
        
        #else
            DIR* pDir = opendir(Dir.c_str());
            if (pDir == NULL) {
                std::stringstream ss;
                ss << "Failed to list the directory content of `";
                ss << Dir << "`: " << strerror(errno);
                throw Exception(ss.str());
            }
            
            FileListPtr fileList(new std::vector<std::string>);
            
            struct dirent* pEnt = readdir(pDir);
            while (pEnt != NULL) {
                if (pEnt->d_type != DT_REG) {
                    pEnt = readdir(pDir);
                    continue;
                }

                fileList->push_back(std::string(pEnt->d_name));
                pEnt = readdir(pDir);
            }
            
            if (closedir(pDir)) {
                std::stringstream ss;
                ss << "Failed to close directory `" << Dir << "`: ";
                ss << strerror(errno);
                throw Exception(ss.str());
            }
            
            return fileList;
        #endif
    }
    
    void File::WalkDirectoryTree(std::string Dir, DirectoryWalker* pWalker) {
        dmsg(2,("File: WalkDirectoryTree(Dir=%s)\n", Dir.c_str()));
        File f = File(Dir);
        if(!f.Exist()) throw Exception("Fail to stat `" + Dir + "`: " + f.GetErrorMsg());
        if(!f.IsDirectory()) throw Exception("The specified path is not a directory: " + Dir);
        
        DirectoryWalkerMutex.Lock();
        DirectoryWalkers.push_back(pWalker);
        DWErrorMsg = "Failed to process directory tree: " + Dir;
        
        #if WIN32
        
        #else
            if (ftw(Dir.c_str(), FtwCallback, 10)) {
                DirectoryWalkers.pop_back();
                if (DirectoryWalkers.size() == 0) DirectoryWalkerMutex.Unlock();
                throw Exception(DWErrorMsg);
            }
        #endif
        DirectoryWalkers.pop_back();
        if (DirectoryWalkers.size() == 0) DirectoryWalkerMutex.Unlock();
    }

#if WIN32

#else
    int File::FtwCallback(const char* fpath, const struct stat* sb, int typeflag) {
        dmsg(2,("File: FtwCallback(fpath=%s)\n", fpath));
        try {
            if (typeflag == FTW_D) DirectoryWalkers.back()->DirectoryEntry(std::string(fpath));
            else if (typeflag == FTW_F) DirectoryWalkers.back()->FileEntry(std::string(fpath));
        } catch(Exception e) {
            e.PrintMessage();
            DWErrorMsg = e.Message();
            return -1;
        }
        
        return 0;
    };
#endif
}
1	iliev	1717	/***************************************************************************
2			* *
3			* Copyright (C) 2008 Grigor Iliev, Benno Senoner *
4			* *
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			#include "File.h"
22
23			#include <errno.h>
24			#include <sstream>
25
26			#include "Exception.h"
27			#include "global_private.h"
28
29			#if WIN32
30
31			#else
32			#include <dirent.h>
33			#include <ftw.h>
34			#endif
35
36			namespace LinuxSampler {
37
38			#if WIN32
39			char File::DirSeparator = '\\';
40			#else
41			char File::DirSeparator = '/';
42			#endif
43
44			Mutex File::DirectoryWalkerMutex = Mutex();
45			std::vector<File::DirectoryWalker*> File::DirectoryWalkers;
46			std::string File::DWErrorMsg;
47
48			File::File(std::string Path) {
49			#if WIN32
50
51			#else
52			bExist = !stat(Path.c_str(), &Status);
53			if(!bExist) ErrorMsg = strerror(errno);
54			#endif
55			}
56
57			bool File::Exist() {
58			return bExist;
59			}
60
61			std::string File::GetErrorMsg() {
62			return ErrorMsg;
63			}
64
65			bool File::IsFile() {
66			if(!Exist()) return false;
67
68			#if WIN32
69
70			#else
71			return S_ISREG(Status.st_mode);
72			#endif
73			}
74
75			bool File::IsDirectory() {
76			if(!Exist()) return false;
77
78			#if WIN32
79
80			#else
81			return S_ISDIR(Status.st_mode);
82			#endif
83			}
84
85			unsigned long File::GetSize() {
86			if(!Exist()) return 0;
87
88			#if WIN32
89
90			#else
91			return Status.st_size;
92			#endif
93			}
94
95			FileListPtr File::GetFiles(std::string Dir) {
96			#if WIN32
97
98			#else
99			DIR* pDir = opendir(Dir.c_str());
100			if (pDir == NULL) {
101			std::stringstream ss;
102			ss << "Failed to list the directory content of `";
103			ss << Dir << "`: " << strerror(errno);
104			throw Exception(ss.str());
105			}
106
107			FileListPtr fileList(new std::vector<std::string>);
108
109			struct dirent* pEnt = readdir(pDir);
110			while (pEnt != NULL) {
111			if (pEnt->d_type != DT_REG) {
112			pEnt = readdir(pDir);
113			continue;
114			}
115
116			fileList->push_back(std::string(pEnt->d_name));
117			pEnt = readdir(pDir);
118			}
119
120			if (closedir(pDir)) {
121			std::stringstream ss;
122			ss << "Failed to close directory `" << Dir << "`: ";
123			ss << strerror(errno);
124			throw Exception(ss.str());
125			}
126
127			return fileList;
128			#endif
129			}
130
131			void File::WalkDirectoryTree(std::string Dir, DirectoryWalker* pWalker) {
132			dmsg(2,("File: WalkDirectoryTree(Dir=%s)\n", Dir.c_str()));
133			File f = File(Dir);
134			if(!f.Exist()) throw Exception("Fail to stat `" + Dir + "`: " + f.GetErrorMsg());
135			if(!f.IsDirectory()) throw Exception("The specified path is not a directory: " + Dir);
136
137			DirectoryWalkerMutex.Lock();
138			DirectoryWalkers.push_back(pWalker);
139			DWErrorMsg = "Failed to process directory tree: " + Dir;
140
141			#if WIN32
142
143			#else
144			if (ftw(Dir.c_str(), FtwCallback, 10)) {
145			DirectoryWalkers.pop_back();
146			if (DirectoryWalkers.size() == 0) DirectoryWalkerMutex.Unlock();
147			throw Exception(DWErrorMsg);
148			}
149			#endif
150			DirectoryWalkers.pop_back();
151			if (DirectoryWalkers.size() == 0) DirectoryWalkerMutex.Unlock();
152			}
153
154			#if WIN32
155
156			#else
157			int File::FtwCallback(const char* fpath, const struct stat* sb, int typeflag) {
158			dmsg(2,("File: FtwCallback(fpath=%s)\n", fpath));
159			try {
160			if (typeflag == FTW_D) DirectoryWalkers.back()->DirectoryEntry(std::string(fpath));
161			else if (typeflag == FTW_F) DirectoryWalkers.back()->FileEntry(std::string(fpath));
162			} catch(Exception e) {
163			e.PrintMessage();
164			DWErrorMsg = e.Message();
165			return -1;
166			}
167
168			return 0;
169			};
170			#endif
171			}