106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file pandaFileStreamBuf.h
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* @author drose
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* @date 2008-09-08
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*/
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#ifndef PANDAFILESTREAMBUF_H
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#define PANDAFILESTREAMBUF_H
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#include "dtoolbase.h"
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#ifdef USE_PANDAFILESTREAM
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#if defined(_WIN32)
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN 1
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#endif
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#include <windows.h>
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#endif
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/**
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* The streambuf object that implements pifstream and pofstream.
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*/
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class EXPCL_DTOOL_DTOOLUTIL PandaFileStreamBuf : public std::streambuf {
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public:
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PandaFileStreamBuf();
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virtual ~PandaFileStreamBuf();
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void open(const char *filename, std::ios::openmode mode);
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#ifdef _WIN32
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void attach(const char *filename, HANDLE handle, std::ios::openmode mode);
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#else
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void attach(const char *filename, int fd, std::ios::openmode mode);
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#endif
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bool is_open() const;
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void close();
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enum NewlineMode {
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NM_native,
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NM_binary,
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NM_msdos,
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NM_unix,
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NM_mac,
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};
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static NewlineMode _newline_mode;
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protected:
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virtual std::streampos seekoff(std::streamoff off, ios_seekdir dir, ios_openmode which);
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virtual std::streampos seekpos(std::streampos pos, ios_openmode which);
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virtual int overflow(int c);
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virtual int sync();
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virtual int underflow();
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private:
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size_t read_chars(char *start, size_t length);
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size_t write_chars(const char *start, size_t length);
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size_t read_chars_raw(char *start, size_t length);
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size_t write_chars_raw(const char *start, size_t length);
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size_t decode_newlines(char *dest, size_t dest_length,
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const char *source, size_t source_length);
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size_t encode_newlines_msdos(char *dest, size_t dest_length,
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const char *source, size_t source_length);
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size_t encode_newlines_unix(char *dest, size_t dest_length,
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const char *source, size_t source_length);
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size_t encode_newlines_mac(char *dest, size_t dest_length,
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const char *source, size_t source_length);
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private:
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std::string _filename;
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bool _is_open;
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std::ios::openmode _open_mode;
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char _last_read_nl;
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#ifdef _WIN32
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HANDLE _handle;
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#else
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int _fd; // Posix file descriptor
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#endif // _WIN32
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char *_buffer;
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std::streampos _ppos;
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std::streampos _gpos;
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};
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EXPCL_DTOOL_DTOOLUTIL std::ostream &
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operator << (std::ostream &out, PandaFileStreamBuf::NewlineMode newline_mode);
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EXPCL_DTOOL_DTOOLUTIL std::istream &
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operator >> (std::istream &in, PandaFileStreamBuf::NewlineMode &newline_mode);
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#endif // USE_PANDAFILESTREAM
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#endif
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