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"

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;

                std::string getBasename() const;

                int remove(bool recursive = false);

                File get(string filename) const;

                File getParent() const;

                bool exists() const;

                void update();

                size_t size() const;

                time_t lastaccess() const;

                time_t lastmodify() const;

                time_t laststatchange() const;

                static void createDirectory(File &path);

                bool operator==(const ibrcommon::File &other) const;

        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_fstreambuf : public std::basic_streambuf<char, std::char_traits<char> >
        {
        public:
                locked_fstreambuf();
                locked_fstreambuf(File &file, char mode[]);  // ios_base::openmode mode);
                ~locked_fstreambuf();

                void open(File &file, char mode[]); //ios_base::openmode mode);
                bool is_open();
                void close();

        protected:
                virtual int sync();
                virtual int overflow(int = std::char_traits<char>::eof());
                virtual int underflow();

                virtual traits_type::pos_type seekoff(traits_type::off_type sp, ios_base::seekdir sd, ios_base::openmode mode = ios_base::in | ios_base::out)
                {
                        std::cerr << "SEEK NOT IMPLEMENTED: " << sp << ", " << sd << ", " << mode << std::endl;
                        return 0;
                }

                virtual traits_type::pos_type seekpos(traits_type::pos_type sp, ios_base::openmode mode = ios_base::in | ios_base::out)
                {
                        pos_type ret = seekoff(sp, ios::beg, mode);
                        return ret;
                }

        private:
                // The size of the input and output buffers.
                static const size_t BUFF_SIZE = 1024;

                // Input buffer
                char *in_buf_;

                // Output buffer
                char *out_buf_;

                FILE *_fd;
        };

        class locked_ifstream : public std::istream
        {
        public:
                locked_ifstream();
                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();

        private:
                locked_fstreambuf _buffer;
        };

        class locked_ofstream : public std::ostream
        {
        public:
                locked_ofstream();
                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();

        private:
                locked_fstreambuf _buffer;
        };
}

#endif /* FILE_H_ */