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Viewing changes to tests/freetype/src/gxvalid/gxvmort0.c

  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru
  • Date: 2013-05-02 13:11:51 UTC
  • Revision ID: package-import@ubuntu.com-20130502131151-q8dvteqr1ef2x7xz
Tags: upstream-1.4.1~20130504~adb56cb
Import upstream version 1.4.1~20130504~adb56cb

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