+++ /dev/null
-/***************************************************************************/
-/* */
-/* gxvmort0.c */
-/* */
-/* TrueTypeGX/AAT mort table validation */
-/* body for type0 (Indic Script Rearrangement) subtable. */
-/* */
-/* Copyright 2005-2017 by */
-/* suzuki toshiya, Masatake YAMATO, Red Hat K.K., */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-/***************************************************************************/
-/* */
-/* gxvalid is derived from both gxlayout module and otvalid module. */
-/* Development of gxlayout is supported by the Information-technology */
-/* Promotion Agency(IPA), Japan. */
-/* */
-/***************************************************************************/
-
-
-#include "gxvmort.h"
-
-
- /*************************************************************************/
- /* */
- /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
- /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
- /* messages during execution. */
- /* */
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_gxvmort
-
-
- static const char* GXV_Mort_IndicScript_Msg[] =
- {
- "no change",
- "Ax => xA",
- "xD => Dx",
- "AxD => DxA",
- "ABx => xAB",
- "ABx => xBA",
- "xCD => CDx",
- "xCD => DCx",
- "AxCD => CDxA",
- "AxCD => DCxA",
- "ABxD => DxAB",
- "ABxD => DxBA",
- "ABxCD => CDxAB",
- "ABxCD => CDxBA",
- "ABxCD => DCxAB",
- "ABxCD => DCxBA",
-
- };
-
-
- static void
- gxv_mort_subtable_type0_entry_validate(
- FT_Byte state,
- FT_UShort flags,
- GXV_StateTable_GlyphOffsetCPtr glyphOffset_p,
- FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator gxvalid )
- {
- FT_UShort markFirst;
- FT_UShort dontAdvance;
- FT_UShort markLast;
- FT_UShort reserved;
- FT_UShort verb = 0;
-
- FT_UNUSED( state );
- FT_UNUSED( table );
- FT_UNUSED( limit );
-
- FT_UNUSED( GXV_Mort_IndicScript_Msg[verb] ); /* for the non-debugging */
- FT_UNUSED( glyphOffset_p ); /* case */
-
-
- markFirst = (FT_UShort)( ( flags >> 15 ) & 1 );
- dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 );
- markLast = (FT_UShort)( ( flags >> 13 ) & 1 );
-
- reserved = (FT_UShort)( flags & 0x1FF0 );
- verb = (FT_UShort)( flags & 0x000F );
-
- GXV_TRACE(( " IndicScript MorphRule for glyphOffset 0x%04x",
- glyphOffset_p->u ));
- GXV_TRACE(( " markFirst=%01d", markFirst ));
- GXV_TRACE(( " dontAdvance=%01d", dontAdvance ));
- GXV_TRACE(( " markLast=%01d", markLast ));
- GXV_TRACE(( " %02d", verb ));
- GXV_TRACE(( " %s\n", GXV_Mort_IndicScript_Msg[verb] ));
-
- if ( markFirst > 0 && markLast > 0 )
- {
- GXV_TRACE(( " [odd] a glyph is marked as the first and last"
- " in Indic rearrangement\n" ));
- GXV_SET_ERR_IF_PARANOID( FT_INVALID_DATA );
- }
-
- if ( markFirst > 0 && dontAdvance > 0 )
- {
- GXV_TRACE(( " [odd] the first glyph is marked as dontAdvance"
- " in Indic rearrangement\n" ));
- GXV_SET_ERR_IF_PARANOID( FT_INVALID_DATA );
- }
-
- if ( 0 < reserved )
- {
- GXV_TRACE(( " non-zero bits found in reserved range\n" ));
- GXV_SET_ERR_IF_PARANOID( FT_INVALID_DATA );
- }
- else
- GXV_TRACE(( "\n" ));
- }
-
-
- FT_LOCAL_DEF( void )
- gxv_mort_subtable_type0_validate( FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator gxvalid )
- {
- FT_Bytes p = table;
-
-
- GXV_NAME_ENTER(
- "mort chain subtable type0 (Indic-Script Rearrangement)" );
-
- GXV_LIMIT_CHECK( GXV_STATETABLE_HEADER_SIZE );
-
- gxvalid->statetable.optdata = NULL;
- gxvalid->statetable.optdata_load_func = NULL;
- gxvalid->statetable.subtable_setup_func = NULL;
- gxvalid->statetable.entry_glyphoffset_fmt = GXV_GLYPHOFFSET_NONE;
- gxvalid->statetable.entry_validate_func =
- gxv_mort_subtable_type0_entry_validate;
-
- gxv_StateTable_validate( p, limit, gxvalid );
-
- GXV_EXIT;
- }
-
-
-/* END */
projects / reactos.git / blobdiff