Start of GFILE module

1 files changed, 225 insertions, 0 deletions

diff --git a/src/gfile/gfile.c b/src/gfile/gfile.c
new file mode 100644
index 00000000..bf76e8bc
--- /dev/null
+++ b/src/gfile/gfile.c
@@ -0,0 +1,225 @@
+/*
+ * 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)
+					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;
+}
+
+GFILE *gfileOpen(const char *fname, const char *mode) {
+
+}
+
+void gfileClose(GFILE *f) {
+
+}
+
+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 */