1 files changed, 188 insertions, 0 deletions
diff --git a/cpukit/libfs/src/dosfs/msdos_conv_default.c b/cpukit/libfs/src/dosfs/msdos_conv_default.c
new file mode 100644
index 0000000000..baf83208f5
--- /dev/null
+++ b/cpukit/libfs/src/dosfs/msdos_conv_default.c
@@ -0,0 +1,188 @@
+/**
+ * @file
+ *
+ * @ingroup DOSFS
+ *
+ * @brief Default Converter
+ */
+
+/*
+ * Copyright (c) 2013 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <assert.h>
+#include <rtems/endian.h>
+#include <rtems/dosfs.h>
+#include "fat.h"
+#include "msdos.h"
+
+static int msdos_default_utf8_to_codepage(
+  rtems_dosfs_convert_control *super,
+  const uint8_t               *src,
+  const size_t                 src_size,
+  char                        *dst,
+  size_t                      *dst_size
+)
+{
+  int    eno = 0;
+  size_t bytes_to_copy = MIN( src_size, *dst_size );
+
+  (void) super;
+
+  *dst_size = bytes_to_copy;
+
+  memcpy( dst, src, bytes_to_copy );
+
+  return eno;
+}
+
+static int msdos_default_codepage_to_utf8(
+  rtems_dosfs_convert_control *super,
+  const char                  *src,
+  const size_t                 src_size,
+  uint8_t                     *dst,
+  size_t                      *dst_size
+)
+{
+  int    eno = 0;
+  size_t bytes_to_copy = MIN( src_size, *dst_size );
+
+  (void) super;
+
+  *dst_size = bytes_to_copy;
+
+  memcpy( dst, src, bytes_to_copy );
+
+  return eno;
+}
+
+static int msdos_default_utf8_to_utf16(
+  rtems_dosfs_convert_control *super,
+  const uint8_t               *src,
+  const size_t                 src_size,
+  uint16_t                    *dst,
+  size_t                      *dst_size
+)
+{
+  int    eno = 0;
+  size_t bytes_to_copy = MIN( src_size, *dst_size / 2);
+  size_t i;
+
+  (void) super;
+
+  *dst_size = 2 * bytes_to_copy;
+
+  for ( i = 0; eno == 0 && i < bytes_to_copy; ++i ) {
+    uint16_t utf16_native = src[i];
+
+    if ( utf16_native <= 127 ) {
+      dst[i] = CT_LE_W( utf16_native );
+    } else {
+      eno = EINVAL;
+    }
+  }
+
+  return eno;
+}
+
+static int msdos_default_utf16_to_utf8(
+  rtems_dosfs_convert_control *super,
+  const uint16_t              *src,
+  const size_t                 src_size,
+  uint8_t                     *dst,
+  size_t                      *dst_size
+)
+{
+  int    eno = 0;
+  size_t bytes_to_copy = MIN( src_size / 2, *dst_size );
+  size_t i;
+
+  (void) super;
+
+  *dst_size = bytes_to_copy;
+
+  for ( i = 0; eno == 0 && i < bytes_to_copy; ++i ) {
+    uint16_t utf16_le = src[i];
+    uint16_t utf16_native  = CF_LE_W( utf16_le );
+
+    if ( utf16_native <= 127 ) {
+      dst[i] = (uint8_t) utf16_native;
+    } else {
+      eno = EINVAL;
+    }
+  }
+
+  return eno;
+}
+
+static int msdos_default_normalize_and_fold(
+  rtems_dosfs_convert_control *super,
+  const uint8_t               *src,
+  const size_t                 src_size,
+  uint8_t                     *dst,
+  size_t                      *dst_size
+)
+{
+  int    eno = 0;
+  size_t bytes_to_copy = MIN( src_size, *dst_size );
+  size_t i;
+
+  (void) super;
+
+  *dst_size = bytes_to_copy;
+
+  for ( i = 0; i < bytes_to_copy; ++i ) {
+    dst[i] = tolower( src[i] );
+  }
+
+  return eno;
+}
+
+static void msdos_default_destroy(
+  rtems_dosfs_convert_control *super
+)
+{
+  free( super );
+}
+
+static const rtems_dosfs_convert_handler msdos_default_convert_handler = {
+  .utf8_to_codepage = msdos_default_utf8_to_codepage,
+  .codepage_to_utf8 = msdos_default_codepage_to_utf8,
+  .utf8_to_utf16 = msdos_default_utf8_to_utf16,
+  .utf16_to_utf8 = msdos_default_utf16_to_utf8,
+  .utf8_normalize_and_fold = msdos_default_normalize_and_fold,
+  .destroy = msdos_default_destroy
+};
+
+typedef struct {
+  rtems_dosfs_convert_control super;
+  uint8_t buffer[MSDOS_NAME_MAX_LFN_BYTES];
+} msdos_default_convert_control;
+
+rtems_dosfs_convert_control *rtems_dosfs_create_default_converter(void)
+{
+  msdos_default_convert_control *self = malloc( sizeof( *self ) );
+
+  if ( self != NULL ) {
+    rtems_dosfs_convert_control *super = &self->super;
+
+    super->handler = &msdos_default_convert_handler;
+    super->buffer.data = &self->buffer;
+    super->buffer.size = sizeof( self->buffer );
+  }
+
+  return &self->super;
+}