ibrcommon/ibrcommon/data/File.h

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/*
 * File.h
 *
 *  Created on: 20.11.2009
 *      Author: morgenro
 */

#ifndef IBRCOMMON_FILE_H_
#define IBRCOMMON_FILE_H_

//#define USE_FILE_LOCKING 1

#include <iostream>
#include <map>
#include <vector>
#include <list>
#include <dirent.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "ibrcommon/Exceptions.h"

#ifdef USE_FILE_LOCKING
#include <ext/stdio_filebuf.h>
#else
#include <fstream>
#endif

using namespace std;

namespace ibrcommon
{
        class File
        {
        public:
                File();

                File(const string path);

                virtual ~File();

                unsigned char getType() const;

                int getFiles(list<File> &files);

                bool isSystem() const;

                bool isDirectory() const;

                std::string getPath() const;

                int remove(bool recursive = false);

                File get(string filename) const;

                File getParent() const;

                bool exists() const;

                void update();

                size_t size() const;

                static void createDirectory(File &path);

        private:
                File(const string path, const unsigned char t);
                void resolveAbsolutePath();
                void removeSlash();
                string _path;
                unsigned char _type;
        };

        class FileNotExistsException : public ibrcommon::IOException
        {
        public:
                FileNotExistsException(ibrcommon::File f) throw() : IOException("The file " + f.getPath() + " does not exists.")
                {
                };
        };

        class TemporaryFile : public File
        {
        public:
                TemporaryFile(const File &path, const std::string prefix = "file");
                virtual ~TemporaryFile();

        private:
                static std::string tmpname(const File &path, const std::string prefix);
        };

        class locked_ifstream
        {
        public:
                locked_ifstream(File &file, ios_base::openmode mode = ios_base::in);
                ~locked_ifstream();

                void open(File &file, ios_base::openmode mode = ios_base::in);
                bool is_open();
                void close();

                std::istream& operator*();

        private:
#ifdef USE_FILE_LOCKING
                __gnu_cxx::stdio_filebuf<char> *_buf;
                std::istream *_stream;
                int _fd;
#else
                std::ifstream _stream;
#endif
        };

        class locked_ofstream
        {
        public:
                locked_ofstream(File &file, ios_base::openmode mode = ios_base::out);
                ~locked_ofstream();

                void open(File &file, ios_base::openmode mode = ios_base::out);
                bool is_open();
                void close();

                std::ostream& operator*();

        private:
#ifdef USE_FILE_LOCKING
                __gnu_cxx::stdio_filebuf<char> *_buf;
                std::ostream *_stream;
                int _fd;
#else
                std::ofstream _stream;
#endif
        };

        class locked_fstream
        {
        public:
                locked_fstream();
                locked_fstream(File &file, ios_base::openmode mode = ios_base::in | ios_base::out);
                ~locked_fstream();

                void open(File &file, ios_base::openmode mode = ios_base::in | ios_base::out);
                bool is_open();
                void close();

                std::iostream& operator*();

#ifdef USE_FILE_LOCKING
                static unsigned int getopts(ios_base::openmode mode);
#endif

        private:
#ifdef USE_FILE_LOCKING
                __gnu_cxx::stdio_filebuf<char> *_buf;
                std::iostream *_stream;
                int _fd;
#else
                std::fstream _stream;
#endif
        };
}

#endif /* FILE_H_ */