Spaces:
Running
Running
File size: 1,530 Bytes
5cee033 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 |
//========================================================================
//
// InMemoryFile.h
//
// Represents a file in-memory with GNU's stdio wrappers.
// NOTE as of this writing, open() depends on the glibc 'fopencookie'
// extension and is not supported on other platforms. The
// HAVE_IN_MEMORY_FILE macro is intended to reflect whether this class is
// usable.
//
// This file is licensed under the GPLv2 or later
//
// Copyright (C) 2018, 2019 Greg Knight <[email protected]>
// Copyright (C) 2022 Albert Astals Cid <[email protected]>
//
//========================================================================
#ifndef IN_MEMORY_FILE_H
#define IN_MEMORY_FILE_H
#include <cstdio>
#include <string>
#include <vector>
#if defined(__USE_GNU) && !defined(__ANDROID_API__)
# define HAVE_IN_MEMORY_FILE (1)
# define HAVE_IN_MEMORY_FILE_FOPENCOOKIE (1) // used internally
#endif
class InMemoryFile
{
private:
#ifdef HAVE_IN_MEMORY_FILE_FOPENCOOKIE
size_t iohead = 0;
FILE *fptr = nullptr;
#endif
std::vector<char> data;
#ifdef HAVE_IN_MEMORY_FILE_FOPENCOOKIE
ssize_t _read(char *buf, size_t sz);
ssize_t _write(const char *buf, size_t sz);
int _seek(off64_t *offset, int whence);
#endif
public:
InMemoryFile();
public:
/* Returns a file handle for this file. This is scoped to this object
* and must be fclosed() by the caller before destruction. */
FILE *open(const char *mode);
const std::vector<char> &getBuffer() const { return data; }
};
#endif // IN_MEMORY_FILE_H
|