1 files changed, 65 insertions, 0 deletions
diff --git a/src/gfile/gfile_fs_mem.c b/src/gfile/gfile_fs_mem.c
new file mode 100644
index 00000000..150220b8
--- /dev/null
+++ b/src/gfile/gfile_fs_mem.c
@@ -0,0 +1,65 @@
+/*
+ * 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
+ */
+
+/********************************************************
+ * The virtual memory file-system
+ ********************************************************/
+
+#include "gfx.h"
+
+#if GFX_USE_GFILE && GFILE_NEED_MEMFS
+
+#include "gfile_fs.h"
+
+#include <string.h>
+
+static int MEMRead(GFILE *f, void *buf, int size);
+static int MEMWrite(GFILE *f, const void *buf, int size);
+static bool_t MEMSetpos(GFILE *f, long int pos);
+
+static const GFILEVMT FsMemVMT = {
+	GFSFLG_SEEKABLE|GFSFLG_WRITEABLE,					// flags
+	0,													// prefix
+	0, 0, 0, 0,
+	0, 0, MEMRead, MEMWrite,
+	MEMSetpos, 0, 0,
+	0, 0, 0,
+	#if GFILE_NEED_FILELISTS
+		0, 0, 0,
+	#endif
+};
+
+static int MEMRead(GFILE *f, void *buf, int size) {
+	memcpy(buf, ((char *)f->obj)+f->pos, size);
+	return size;
+}
+static int MEMWrite(GFILE *f, const void *buf, int size) {
+	memcpy(((char *)f->obj)+f->pos, buf, size);
+	return size;
+}
+static bool_t MEMSetpos(GFILE *f, long int pos) {
+	(void) f;
+	(void) pos;
+	return TRUE;
+}
+
+GFILE *	gfileOpenMemory(void *memptr, const char *mode) {
+	GFILE	*f;
+
+	// Get an empty file and set the flags
+	if (!(f = _gfileFindSlot(mode)))
+		return 0;
+
+	// File is open - fill in all the details
+	f->vmt = &FsMemVMT;
+	f->obj = memptr;
+	f->pos = 0;
+	f->flags |= GFILEFLG_OPEN|GFILEFLG_CANSEEK;
+	return f;
+}
+
+#endif //GFX_USE_GFILE && GFILE_NEED_MEMFS