//========================================================================

//

// gfile.h

//

// Miscellaneous file and directory name manipulation.

//

// Copyright 1996-2003 Glyph & Cog, LLC

//

//========================================================================

//========================================================================

//

// Modified under the Poppler project - http://poppler.freedesktop.org

//

// All changes made under the Poppler project to this file are licensed

// under GPL version 2 or later

//

// Copyright (C) 2006 Kristian Høgsberg <krh@redhat.com>

// Copyright (C) 2009, 2011, 2012, 2017, 2018, 2021, 2022, 2025, 2026 Albert Astals Cid <aacid@kde.org>

// Copyright (C) 2009 Kovid Goyal <kovid@kovidgoyal.net>

// Copyright (C) 2013 Adam Reichold <adamreichold@myopera.com>

// Copyright (C) 2013, 2017 Adrian Johnson <ajohnson@redneon.com>

// Copyright (C) 2014 Bogdan Cristea <cristeab@gmail.com>

// Copyright (C) 2014 Peter Breitenlohner <peb@mppmu.mpg.de>

// Copyright (C) 2017 Christoph Cullmann <cullmann@kde.org>

// Copyright (C) 2017 Thomas Freitag <Thomas.Freitag@alfa.de>

// Copyright (C) 2018 Mojca Miklavec <mojca@macports.org>

// Copyright (C) 2019, 2021 Christian Persch <chpe@src.gnome.org>

// Copyright (C) 2026 g10 Code GmbH, Author: Sune Stolborg Vuorela <sune@vuorela.dk>

//

// To see a description of the changes please see the Changelog file that

// came with your tarball or type make ChangeLog if you are building from git

//

//========================================================================

#ifndef GFILE_H

#define GFILE_H

#include "poppler_private_export.h"

#include <cstdio>

#include <ctime>

#include <string>

extern "C" {

#ifdef _WIN32

#    include <sys/stat.h>

#    ifdef FPTEX

#        include <win32lib.h>

#    else

#        ifndef NOMINMAX

#            define NOMINMAX

#        endif

#        include <windows.h>

#    endif

#else

#    include <unistd.h>

#    include <sys/types.h>

#endif

}

#include <memory>

/* Integer type for all file offsets and file sizes */

using Goffset = long long;

//------------------------------------------------------------------------

// Open a file.  On Windows, this converts the path from UTF-8 to

// UCS-2 and calls _wfopen (if available).  On other OSes, this simply

// calls fopen.

extern FILE POPPLER_PRIVATE_EXPORT *openFile(const char *path, const char *mode);

// Just like fgets, but handles Unix, Mac, and/or DOS end-of-line

// conventions.

extern char POPPLER_PRIVATE_EXPORT *getLine(char *buf, int size, FILE *f);

// Like fseek/ftell but uses platform specific variants that support large files

extern int POPPLER_PRIVATE_EXPORT Gfseek(FILE *f, Goffset offset, int whence);

extern Goffset POPPLER_PRIVATE_EXPORT Gftell(FILE *f);

// Largest offset supported by Gfseek/Gftell

extern Goffset GoffsetMax();

//------------------------------------------------------------------------

// GooFile

//------------------------------------------------------------------------

class POPPLER_PRIVATE_EXPORT GooFile

{

public:

    GooFile(const GooFile &) = delete;

    GooFile &operator=(const GooFile &other) = delete;

    int read(char *buf, int n, Goffset offset) const;

    Goffset size() const;

    static std::unique_ptr<GooFile> open(const std::string &fileName);

#ifndef _WIN32

    static std::unique_ptr<GooFile> open(int fdA);

#endif

#ifdef _WIN32

    static std::unique_ptr<GooFile> open(const wchar_t *fileName);

    ~GooFile() { CloseHandle(handle); }

    // Asuming than on windows you can't change files that are already open

    bool modificationTimeChangedSinceOpen() const;

private:

    GooFile(HANDLE handleA);

    HANDLE handle;

    struct _FILETIME modifiedTimeOnOpen;

#else

    ~GooFile() { close(fd); }

    bool modificationTimeChangedSinceOpen() const;

private:

    explicit GooFile(int fdA);

    int fd;

    struct timespec modifiedTimeOnOpen;

#endif // _WIN32

};

#endif