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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* This file is included by src/gfile/gfile.c
*/
/********************************************************
* The native file-system
********************************************************/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
//#include <unistd.h>
static GFILE NativeStdIn;
static GFILE NativeStdOut;
static GFILE NativeStdErr;
static bool_t NativeDel(const char *fname);
static bool_t NativeExists(const char *fname);
static long int NativeFilesize(const char *fname);
static bool_t NativeRen(const char *oldname, const char *newname);
static bool_t NativeOpen(GFILE *f, const char *fname);
static void NativeClose(GFILE *f);
static int NativeRead(GFILE *f, void *buf, int size);
static int NativeWrite(GFILE *f, const void *buf, int size);
static bool_t NativeSetpos(GFILE *f, long int pos);
static long int NativeGetsize(GFILE *f);
static bool_t NativeEof(GFILE *f);
static const GFILEVMT FsNativeVMT = {
GFILE_CHAINHEAD, // next
#if defined(WIN32) || GFX_USE_OS_WIN32
GFSFLG_TEXTMODES|
#else
GFSFLG_CASESENSITIVE|
#endif
GFSFLG_WRITEABLE|GFSFLG_SEEKABLE|GFSFLG_FAST, // flags
'N', // prefix
NativeDel, NativeExists, NativeFilesize, NativeRen,
NativeOpen, NativeClose, NativeRead, NativeWrite,
NativeSetpos, NativeGetsize, NativeEof,
};
#undef GFILE_CHAINHEAD
#define GFILE_CHAINHEAD &FsNativeVMT
static void flags2mode(char *buf, uint16_t flags) {
if (flags & GFILEFLG_MUSTEXIST)
*buf = 'r';
else if (flags & GFILEFLG_APPEND)
*buf = 'a';
else
*buf = 'w';
buf++;
if ((flags & (GFILEFLG_READ|GFILEFLG_WRITE)) == (GFILEFLG_READ|GFILEFLG_WRITE))
*buf++ = '+';
if (flags & GFILEFLG_BINARY)
*buf++ = 'b';
if (flags & GFILEFLG_MUSTNOTEXIST)
*buf++ = 'x';
*buf++ = 0;
}
static bool_t NativeDel(const char *fname) { return remove(fname) ? FALSE : TRUE; }
static void NativeClose(GFILE *f) { fclose((FILE *)f->obj); }
static int NativeRead(GFILE *f, void *buf, int size) { return fread(buf, 1, size, (FILE *)f->obj); }
static int NativeWrite(GFILE *f, const void *buf, int size) { return fwrite(buf, 1, size, (FILE *)f->obj); }
static bool_t NativeSetpos(GFILE *f, long int pos) { return fseek((FILE *)f->obj, pos, SEEK_SET) ? FALSE : TRUE; }
static bool_t NativeEof(GFILE *f) { return feof((FILE *)f->obj) ? TRUE : FALSE; }
static bool_t NativeRen(const char *oldname, const char *newname) { return rename(oldname, newname) ? FALSE : TRUE; }
static bool_t NativeExists(const char *fname) {
// We define access this way so we don't have to include <unistd.h> which may
// (and does under windows) contain conflicting definitions for types such as uint16_t.
extern int access(const char *pathname, int mode);
return access(fname, 0) ? FALSE : TRUE;
}
static long int NativeFilesize(const char *fname) {
struct stat st;
if (stat(fname, &st)) return -1;
return st.st_size;
}
static bool_t NativeOpen(GFILE *f, const char *fname) {
FILE *fd;
char mode[5];
flags2mode(mode, f->flags);
if (!(fd = fopen(fname, mode)))
return FALSE;
f->obj = (void *)fd;
return TRUE;
}
static long int NativeGetsize(GFILE *f) {
struct stat st;
if (fstat(fileno((FILE *)f->obj), &st)) return -1;
return st.st_size;
}
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