Diff: FATFileSystem/Interface/FATFileHandle.cpp

Revision:

0:afb2650fb49a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Interface/FATFileHandle.cpp	Mon Feb 13 02:11:20 2012 +0000
@@ -0,0 +1,89 @@
+/* mbed Microcontroller Library - FATFileHandle
+   Copyright (c) 2008, sford */
+
+//Modified by Thomas Hamilton, Copyright 2010
+
+#include "FATFileHandle.h"
+
+FATFileHandle::FATFileHandle(FAT_FIL InputFilStr)
+{
+    FileObject = InputFilStr;
+}
+
+ssize_t FATFileHandle::write(const void* buffer, size_t length)
+{
+    UINT ByteWritten;
+    if (f_write(&FileObject, buffer, (UINT)length, &ByteWritten))
+    { 
+        return -1;
+    }
+    else
+    {
+        return (ssize_t)ByteWritten;
+    }
+}
+
+int FATFileHandle::close()
+{
+    if (f_close(&FileObject))
+    {
+        return -1;
+    }
+    else
+    {
+        delete this;
+        return 0;
+    }
+}
+
+ssize_t FATFileHandle::read(void* buffer, size_t length)
+{
+    UINT ByteRead;
+    if (f_read(&FileObject, buffer, (UINT)length, &ByteRead))
+    {
+        return -1;
+    }
+    else
+    {
+        return (ssize_t)ByteRead;
+    }
+}
+
+int FATFileHandle::isatty()
+{
+    return 0;
+}
+
+off_t FATFileHandle::lseek(off_t offset, int whence)
+{
+    switch (whence)
+    {
+        case SEEK_CUR: offset += FileObject.fptr; break;
+        case SEEK_END: offset += FileObject.fsize; break;
+    }
+    if (f_lseek(&FileObject, (DWORD)offset))
+    {
+        return -1;
+    }
+    else
+    {
+        return (off_t)FileObject.fptr;
+    }
+}
+
+int FATFileHandle::fsync()
+{
+    if (f_sync(&FileObject))
+    {
+        return -1;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
+off_t FATFileHandle::flen()
+{
+    return (off_t)FileObject.fsize;
+}
\ No newline at end of file