66 lines
2.1 KiB
C
66 lines
2.1 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 ChibiOS BaseFileStream file-system VMT
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********************************************************/
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static void ChibiOSBFSClose(GFILE *f);
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static int ChibiOSBFSRead(GFILE *f, void *buf, int size);
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static int ChibiOSBFSWrite(GFILE *f, const void *buf, int size);
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static bool_t ChibiOSBFSSetpos(GFILE *f, long int pos);
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static long int ChibiOSBFSGetsize(GFILE *f);
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static bool_t ChibiOSBFSEof(GFILE *f);
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static const GFILEVMT FsCHIBIOSVMT = {
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0, // next
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GFSFLG_SEEKABLE|GFSFLG_WRITEABLE, // flags
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0, // prefix
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0, 0, 0, 0,
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0, ChibiOSBFSClose, ChibiOSBFSRead, ChibiOSBFSWrite,
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ChibiOSBFSSetpos, ChibiOSBFSGetsize, ChibiOSBFSEof,
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0, 0, 0,
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#if GFILE_NEED_FILELISTS
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0, 0, 0,
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#endif
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};
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static void ChibiOSBFSClose(GFILE *f) {
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chFileStreamClose(((BaseFileStream *)f->obj));
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}
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static int ChibiOSBFSRead(GFILE *f, void *buf, int size) {
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return chSequentialStreamRead(((BaseFileStream *)f->obj), (uint8_t *)buf, size);
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}
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static int ChibiOSBFSWrite(GFILE *f, const void *buf, int size) {
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return chSequentialStreamWrite(((BaseFileStream *)f->obj), (uint8_t *)buf, size);
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}
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static bool_t ChibiOSBFSSetpos(GFILE *f, long int pos) {
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chFileStreamSeek(((BaseFileStream *)f->obj), pos);
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return TRUE;
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}
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static long int ChibiOSBFSGetsize(GFILE *f) { return chFileStreamGetSize(((BaseFileStream *)f->obj)); }
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static bool_t ChibiOSBFSEof(GFILE *f) { return f->pos >= chFileStreamGetSize(((BaseFileStream *)f->obj)); }
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GFILE * gfileOpenBaseFileStream(void *BaseFileStreamPtr, const char *mode) {
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GFILE * f;
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// Get an empty file and set the flags
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if (!(f = findemptyfile(mode)))
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return 0;
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// File is open - fill in all the details
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f->vmt = &FsCHIBIOSVMT;
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f->obj = BaseFileStreamPtr;
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f->pos = 0;
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f->flags |= GFILEFLG_OPEN|GFILEFLG_CANSEEK;
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return f;
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}
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