1 files changed, 139 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz/src/harfbuzz-gsub.h b/src/3rdparty/harfbuzz/src/harfbuzz-gsub.h
new file mode 100644
index 0000000000..6e452bdb35
--- /dev/null
+++ b/src/3rdparty/harfbuzz/src/harfbuzz-gsub.h
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 1998-2004  David Turner and Werner Lemberg
+ * Copyright (C) 2006  Behdad Esfahbod
+ *
+ * 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.
+ */
+
+#ifndef HARFBUZZ_GSUB_H
+#define HARFBUZZ_GSUB_H
+
+#include "harfbuzz-gdef.h"
+#include "harfbuzz-buffer.h"
+
+HB_BEGIN_HEADER
+
+/* Lookup types for glyph substitution */
+
+#define HB_GSUB_LOOKUP_SINGLE        1
+#define HB_GSUB_LOOKUP_MULTIPLE      2
+#define HB_GSUB_LOOKUP_ALTERNATE     3
+#define HB_GSUB_LOOKUP_LIGATURE      4
+#define HB_GSUB_LOOKUP_CONTEXT       5
+#define HB_GSUB_LOOKUP_CHAIN         6
+#define HB_GSUB_LOOKUP_EXTENSION     7
+#define HB_GSUB_LOOKUP_REVERSE_CHAIN 8
+
+
+/* A pointer to a function which selects the alternate glyph.  `pos' is
+   the position of the glyph with index `glyphID', `num_alternates'
+   gives the number of alternates in the `alternates' array.  `data'
+   points to the user-defined structure specified during a call to
+   HB_GSUB_Register_Alternate_Function().  The function must return an
+   index into the `alternates' array.                                   */
+
+typedef HB_UShort  (*HB_AltFunction)(HB_UInt    pos,
+				      HB_UShort   glyphID,
+				      HB_UShort   num_alternates,
+				      HB_UShort*  alternates,
+				      void*       data );
+
+
+struct  HB_GSUBHeader_
+{
+  HB_GDEFHeader*  gdef;
+
+  /* the next two fields are used for an alternate substitution callback
+     function to select the proper alternate glyph.                      */
+
+  void*            data;
+  HB_AltFunction  altfunc;
+
+  HB_UInt         offset;
+
+  HB_16Dot16         Version;
+
+  HB_ScriptList   ScriptList;
+  HB_FeatureList  FeatureList;
+  HB_LookupList   LookupList;
+};
+
+typedef struct HB_GSUBHeader_   HB_GSUBHeader;
+typedef HB_GSUBHeader*  HB_GSUB;
+
+
+HB_Error  HB_Load_GSUB_Table( HB_Stream       stream,
+			      HB_GSUBHeader** gsub,
+			      HB_GDEFHeader*  gdef,
+                              HB_Stream       gdefStream );
+
+
+HB_Error  HB_Done_GSUB_Table( HB_GSUBHeader*  gsub );
+
+
+HB_Error  HB_GSUB_Select_Script( HB_GSUBHeader*  gsub,
+				 HB_UInt         script_tag,
+				 HB_UShort*       script_index );
+
+HB_Error  HB_GSUB_Select_Language( HB_GSUBHeader*  gsub,
+				   HB_UInt         language_tag,
+				   HB_UShort        script_index,
+				   HB_UShort*       language_index,
+				   HB_UShort*       req_feature_index );
+
+HB_Error  HB_GSUB_Select_Feature( HB_GSUBHeader*  gsub,
+				  HB_UInt         feature_tag,
+				  HB_UShort        script_index,
+				  HB_UShort        language_index,
+				  HB_UShort*       feature_index );
+
+
+HB_Error  HB_GSUB_Query_Scripts( HB_GSUBHeader*  gsub,
+				 HB_UInt**       script_tag_list );
+
+HB_Error  HB_GSUB_Query_Languages( HB_GSUBHeader*  gsub,
+				   HB_UShort        script_index,
+				   HB_UInt**       language_tag_list );
+
+HB_Error  HB_GSUB_Query_Features( HB_GSUBHeader*  gsub,
+				  HB_UShort        script_index,
+				  HB_UShort        language_index,
+				  HB_UInt**       feature_tag_list );
+
+
+HB_Error  HB_GSUB_Add_Feature( HB_GSUBHeader*  gsub,
+			       HB_UShort        feature_index,
+			       HB_UInt          property );
+
+HB_Error  HB_GSUB_Clear_Features( HB_GSUBHeader*  gsub );
+
+
+HB_Error  HB_GSUB_Register_Alternate_Function( HB_GSUBHeader*  gsub,
+					       HB_AltFunction  altfunc,
+					       void*            data );
+
+
+HB_Error  HB_GSUB_Apply_String( HB_GSUBHeader*   gsub,
+				HB_Buffer        buffer );
+
+HB_END_HEADER
+
+#endif /* HARFBUZZ_GSUB_H */