315 lines
7.0 KiB
C
315 lines
7.0 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file src/gfile/gfile.c
|
|
* @brief GFILE code.
|
|
*
|
|
*/
|
|
|
|
#define GFILE_IMPLEMENTATION
|
|
#include "gfx.h"
|
|
|
|
#if GFX_USE_GFILE
|
|
|
|
// The chain of FileSystems
|
|
#define GFILE_CHAINHEAD 0
|
|
|
|
// The table of GFILE's
|
|
static GFILE gfileArr[GFILE_MAX_GFILES];
|
|
GFILE *gfileStdIn;
|
|
GFILE *gfileStdOut;
|
|
GFILE *gfileStdErr;
|
|
|
|
/**
|
|
* The order of the file-systems below determines the order
|
|
* that they are searched to find a file.
|
|
* The last defined is the first searched.
|
|
*/
|
|
|
|
/********************************************************
|
|
* The RAM file-system VMT
|
|
********************************************************/
|
|
#if GFILE_NEED_RAMFS
|
|
#include "../src/gfile/inc_ramfs.c"
|
|
#endif
|
|
|
|
/********************************************************
|
|
* The FAT file-system VMT
|
|
********************************************************/
|
|
#ifndef GFILE_NEED_FATFS
|
|
#include "../src/gfile/inc_fatfs.c"
|
|
#endif
|
|
|
|
/********************************************************
|
|
* The native file-system
|
|
********************************************************/
|
|
#if GFILE_NEED_NATIVEFS
|
|
#include "../src/gfile/inc_nativefs.c"
|
|
#endif
|
|
|
|
/********************************************************
|
|
* The ROM file-system VMT
|
|
********************************************************/
|
|
#if GFILE_NEED_ROMFS
|
|
#include "../src/gfile/inc_romfs.c"
|
|
#endif
|
|
|
|
/********************************************************
|
|
* IO routines
|
|
********************************************************/
|
|
|
|
/**
|
|
* The chain of file systems.
|
|
*/
|
|
static const GFILEVMT const * FsChain = GFILE_CHAINHEAD;
|
|
|
|
/**
|
|
* The init routine
|
|
*/
|
|
void _gfileInit(void) {
|
|
#if GFILE_NEED_NATIVEFS
|
|
NativeStdIn.flags = GFILEFLG_OPEN|GFILEFLG_READ;
|
|
NativeStdIn.vmt = &FsNativeVMT;
|
|
NativeStdIn.obj = (void *)stdin;
|
|
NativeStdIn.pos = 0;
|
|
gfileStdIn = &NativeStdIn;
|
|
NativeStdOut.flags = GFILEFLG_OPEN|GFILEFLG_WRITE|GFILEFLG_APPEND;
|
|
NativeStdOut.vmt = &FsNativeVMT;
|
|
NativeStdOut.obj = (void *)stdout;
|
|
NativeStdOut.pos = 0;
|
|
gfileStdOut = &NativeStdOut;
|
|
NativeStdErr.flags = GFILEFLG_OPEN|GFILEFLG_WRITE|GFILEFLG_APPEND;
|
|
NativeStdErr.vmt = &FsNativeVMT;
|
|
NativeStdErr.obj = (void *)stderr;
|
|
NativeStdErr.pos = 0;
|
|
gfileStdErr = &NativeStdErr;
|
|
#endif
|
|
}
|
|
|
|
bool_t gfileExists(const char *fname) {
|
|
const GFILEVMT *p;
|
|
|
|
if (fname[0] && fname[1] == '|') {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->prefix == fname[0])
|
|
return p->exists && p->exists(fname+2);
|
|
}
|
|
} else {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->exists && p->exists(fname))
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
bool_t gfileDelete(const char *fname) {
|
|
const GFILEVMT *p;
|
|
|
|
if (fname[0] && fname[1] == '|') {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->prefix == fname[0])
|
|
return p->del && p->del(fname+2);
|
|
}
|
|
} else {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->del && p->del(fname))
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
long int gfileGetFilesize(const char *fname) {
|
|
const GFILEVMT *p;
|
|
|
|
if (fname[0] && fname[1] == '|') {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->prefix == fname[0])
|
|
return p->filesize ? p->filesize(fname+2) : -1;
|
|
}
|
|
} else {
|
|
long int res;
|
|
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->filesize && (res = p->filesize(fname)) != -1)
|
|
return res;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
bool_t gfileRename(const char *oldname, const char *newname) {
|
|
const GFILEVMT *p;
|
|
|
|
if ((oldname[0] && oldname[1] == '|') || (newname[0] && newname[1] == '|')) {
|
|
char ch;
|
|
|
|
if (oldname[0] && oldname[1] == '|') {
|
|
ch = oldname[0];
|
|
oldname += 2;
|
|
if (newname[0] && newname[1] == '|') {
|
|
if (newname[0] != ch)
|
|
// Both oldname and newname are fs specific but different ones.
|
|
return FALSE;
|
|
newname += 2;
|
|
}
|
|
} else {
|
|
ch = newname[0];
|
|
newname += 2;
|
|
}
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->prefix == ch)
|
|
return p->ren && p->ren(oldname, newname);
|
|
}
|
|
} else {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->ren && p->ren(oldname,newname))
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static uint16_t mode2flags(const char *mode) {
|
|
uint16_t flags;
|
|
|
|
switch(mode[0]) {
|
|
case 'r':
|
|
flags = GFILEFLG_READ|GFILEFLG_MUSTEXIST;
|
|
while (*++mode) {
|
|
switch(mode[0]) {
|
|
case '+': flags |= GFILEFLG_WRITE; break;
|
|
case 'b': flags |= GFILEFLG_BINARY; break;
|
|
}
|
|
}
|
|
return flags;
|
|
case 'w':
|
|
flags = GFILEFLG_WRITE|GFILEFLG_TRUNC;
|
|
while (*++mode) {
|
|
switch(mode[0]) {
|
|
case '+': flags |= GFILEFLG_READ; break;
|
|
case 'b': flags |= GFILEFLG_BINARY; break;
|
|
case 'x': flags |= GFILEFLG_MUSTNOTEXIST; break;
|
|
}
|
|
}
|
|
return flags;
|
|
case 'a':
|
|
flags = GFILEFLG_WRITE|GFILEFLG_APPEND;
|
|
while (*++mode) {
|
|
switch(mode[0]) {
|
|
case '+': flags |= GFILEFLG_READ; break;
|
|
case 'b': flags |= GFILEFLG_BINARY; break;
|
|
case 'x': flags |= GFILEFLG_MUSTNOTEXIST; break;
|
|
}
|
|
}
|
|
return flags;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static bool_t testopen(const GFILEVMT *p, GFILE *f, const char *fname) {
|
|
// If we want write but the fs doesn't allow it then return
|
|
if ((f->flags & GFILEFLG_WRITE) && !(p->flags & GFSFLG_WRITEABLE))
|
|
return FALSE;
|
|
|
|
// Try to open
|
|
if (!p->open || !p->open(f, fname))
|
|
return FALSE;
|
|
|
|
// File is open - fill in all the details
|
|
f->vmt = p;
|
|
f->err = 0;
|
|
f->pos = 0;
|
|
f->flags |= GFILEFLG_OPEN;
|
|
if (p->flags & GFSFLG_SEEKABLE)
|
|
f->flags |= GFILEFLG_CANSEEK;
|
|
return TRUE;
|
|
}
|
|
|
|
GFILE *gfileOpen(const char *fname, const char *mode) {
|
|
GFILE *f;
|
|
const GFILEVMT *p;
|
|
|
|
// First find an available GFILE slot.
|
|
for (f = gfileArr; f < &gfileArr[GFILE_MAX_GFILES]; f++) {
|
|
if (!(f->flags & GFILEFLG_OPEN)) {
|
|
|
|
// Get the requested mode
|
|
if (!(f->flags = mode2flags(mode)))
|
|
return FALSE;
|
|
|
|
// Try to open the file
|
|
if (fname[0] && fname[1] == '|') {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (p->prefix == fname[0])
|
|
return testopen(p, f, fname+2);
|
|
}
|
|
} else {
|
|
for(p = FsChain; p; p = p->next) {
|
|
if (testopen(p, f, fname))
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
// File not found
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
// No available slot
|
|
return FALSE;
|
|
}
|
|
|
|
void gfileClose(GFILE *f) {
|
|
// Make sure it is one of the system GFILE's
|
|
if (f < gfileArr || f >= &gfileArr[GFILE_MAX_GFILES])
|
|
return;
|
|
}
|
|
|
|
size_t gfileRead(GFILE *f, char *buf, size_t len) {
|
|
|
|
}
|
|
|
|
size_t gfileWrite(GFILE *f, const char *buf, size_t len) {
|
|
|
|
}
|
|
|
|
long int gfileGetPos(GFILE *f) {
|
|
|
|
}
|
|
|
|
bool_t gfileSetPos(GFILE *f, long int pos) {
|
|
|
|
}
|
|
|
|
long int gfileGetSize(GFILE *f) {
|
|
|
|
}
|
|
|
|
/********************************************************
|
|
* printg routines
|
|
********************************************************/
|
|
#if GFILE_NEED_PRINTG
|
|
#endif
|
|
|
|
/********************************************************
|
|
* scang routines
|
|
********************************************************/
|
|
#if GFILE_NEED_SCANG
|
|
#endif
|
|
|
|
/********************************************************
|
|
* stdio emulation routines
|
|
********************************************************/
|
|
#ifndef GFILE_NEED_STDIO
|
|
#define GFILE_NEED_STDIO FALSE
|
|
#endif
|
|
|
|
#endif /* GFX_USE_GFILE */
|