1 files changed, 114 insertions, 0 deletions
diff --git a/third_party/harfbuzz/src/harfbuzz-stream.c b/third_party/harfbuzz/src/harfbuzz-stream.c
new file mode 100644
index 0000000..3dcee82
--- /dev/null
+++ b/third_party/harfbuzz/src/harfbuzz-stream.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2005  David Turner
+ * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
+ * Copyright (C) 2007  Red Hat, Inc.
+ *
+ * This is part of HarfBuzz, an OpenType Layout engine library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ */
+
+#include "harfbuzz-impl.h"
+#include "harfbuzz-stream-private.h"
+#include <stdlib.h>
+
+#if 0
+#include <stdio.h>
+#define  LOG(x)  _hb_log x
+
+static void
+_hb_log( const char*   format, ... )
+{
+  va_list  ap;
+ 
+  va_start( ap, format );
+  vfprintf( stderr, format, ap );
+  va_end( ap );
+}
+
+#else
+#define  LOG(x)  do {} while (0)
+#endif
+
+HB_INTERNAL void
+_hb_close_stream( HB_Stream stream )
+{
+  if (!stream)
+      return;
+  free(stream->base);
+  free(stream);
+}
+
+
+HB_INTERNAL HB_Int
+_hb_stream_pos( HB_Stream stream )
+{
+  LOG(( "_hb_stream_pos() -> %ld\n", stream->pos ));
+  return stream->pos;
+}
+
+
+HB_INTERNAL HB_Error
+_hb_stream_seek( HB_Stream stream,
+		 HB_UInt pos )
+{
+  HB_Error  error = 0;
+
+  stream->pos = pos;
+  if (pos > stream->size)
+      error = ERR(HB_Err_Read_Error);
+
+  LOG(( "_hb_stream_seek(%ld) -> 0x%04X\n", pos, error ));
+  return error;
+}
+
+
+HB_INTERNAL HB_Error
+_hb_stream_frame_enter( HB_Stream stream,
+			HB_UInt count )
+{
+  HB_Error  error = HB_Err_Ok;
+
+  /* check new position, watch for overflow */
+  if (HB_UNLIKELY (stream->pos + count > stream->size ||
+		   stream->pos + count < stream->pos))
+  {
+    error = ERR(HB_Err_Read_Error);
+    goto Exit;
+  }
+
+  /* set cursor */
+  stream->cursor = stream->base + stream->pos;
+  stream->pos   += count;
+
+Exit:
+  LOG(( "_hb_stream_frame_enter(%ld) -> 0x%04X\n", count, error ));
+  return error;
+}
+
+
+HB_INTERNAL void
+_hb_stream_frame_exit( HB_Stream stream )
+{
+  stream->cursor = NULL;
+
+  LOG(( "_hb_stream_frame_exit()\n" ));
+}