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