misc/libfreetype/src/gxvalid/gxvfeat.c
changeset 9372 915436ff64ab
parent 9371 f3840de881bd
child 9373 b769a8e38cbd
--- a/misc/libfreetype/src/gxvalid/gxvfeat.c	Thu Jul 25 23:16:06 2013 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,344 +0,0 @@
-/***************************************************************************/
-/*                                                                         */
-/*  gxvfeat.c                                                              */
-/*                                                                         */
-/*    TrueTypeGX/AAT feat table validation (body).                         */
-/*                                                                         */
-/*  Copyright 2004, 2005, 2008 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 "gxvalid.h"
-#include "gxvcommn.h"
-#include "gxvfeat.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_gxvfeat
-
-
-  /*************************************************************************/
-  /*************************************************************************/
-  /*****                                                               *****/
-  /*****                      Data and Types                           *****/
-  /*****                                                               *****/
-  /*************************************************************************/
-  /*************************************************************************/
-
-  typedef struct  GXV_feat_DataRec_
-  {
-    FT_UInt    reserved_size;
-    FT_UShort  feature;
-    FT_UShort  setting;
-
-  } GXV_feat_DataRec, *GXV_feat_Data;
-
-
-#define GXV_FEAT_DATA( field )  GXV_TABLE_DATA( feat, field )
-
-
-  typedef enum  GXV_FeatureFlagsMask_
-  {
-    GXV_FEAT_MASK_EXCLUSIVE_SETTINGS = 0x8000U,
-    GXV_FEAT_MASK_DYNAMIC_DEFAULT    = 0x4000,
-    GXV_FEAT_MASK_UNUSED             = 0x3F00,
-    GXV_FEAT_MASK_DEFAULT_SETTING    = 0x00FF
-
-  } GXV_FeatureFlagsMask;
-
-
-  /*************************************************************************/
-  /*************************************************************************/
-  /*****                                                               *****/
-  /*****                      UTILITY FUNCTIONS                        *****/
-  /*****                                                               *****/
-  /*************************************************************************/
-  /*************************************************************************/
-
-  static void
-  gxv_feat_registry_validate( FT_UShort      feature,
-                              FT_UShort      nSettings,
-                              FT_Bool        exclusive,
-                              GXV_Validator  valid )
-  {
-    GXV_NAME_ENTER( "feature in registry" );
-
-    GXV_TRACE(( " (feature = %u)\n", feature ));
-
-    if ( feature >= gxv_feat_registry_length )
-    {
-      GXV_TRACE(( "feature number %d is out of range %d\n",
-                  feature, gxv_feat_registry_length ));
-      if ( valid->root->level == FT_VALIDATE_PARANOID )
-        FT_INVALID_DATA;
-      goto Exit;
-    }
-
-    if ( gxv_feat_registry[feature].existence == 0 )
-    {
-      GXV_TRACE(( "feature number %d is in defined range but doesn't exist\n",
-                  feature ));
-      if ( valid->root->level == FT_VALIDATE_PARANOID )
-        FT_INVALID_DATA;
-      goto Exit;
-    }
-
-    if ( gxv_feat_registry[feature].apple_reserved )
-    {
-      /* Don't use here. Apple is reserved. */
-      GXV_TRACE(( "feature number %d is reserved by Apple\n", feature ));
-      if ( valid->root->level >= FT_VALIDATE_TIGHT )
-        FT_INVALID_DATA;
-    }
-
-    if ( nSettings != gxv_feat_registry[feature].nSettings )
-    {
-      GXV_TRACE(( "feature %d: nSettings %d != defined nSettings %d\n",
-                  feature, nSettings,
-                  gxv_feat_registry[feature].nSettings ));
-      if ( valid->root->level >= FT_VALIDATE_TIGHT )
-        FT_INVALID_DATA;
-    }
-
-    if ( exclusive != gxv_feat_registry[feature].exclusive )
-    {
-      GXV_TRACE(( "exclusive flag %d differs from predefined value\n",
-                  exclusive ));
-      if ( valid->root->level >= FT_VALIDATE_TIGHT )
-        FT_INVALID_DATA;
-    }
-
-  Exit:
-    GXV_EXIT;
-  }
-
-
-  static void
-  gxv_feat_name_index_validate( FT_Bytes       table,
-                                FT_Bytes       limit,
-                                GXV_Validator  valid )
-  {
-    FT_Bytes  p = table;
-
-    FT_Short  nameIndex;
-
-
-    GXV_NAME_ENTER( "nameIndex" );
-
-    GXV_LIMIT_CHECK( 2 );
-    nameIndex = FT_NEXT_SHORT ( p );
-    GXV_TRACE(( " (nameIndex = %d)\n", nameIndex ));
-
-    gxv_sfntName_validate( (FT_UShort)nameIndex,
-                           255,
-                           32768U,
-                           valid );
-
-    GXV_EXIT;
-  }
-
-
-  static void
-  gxv_feat_setting_validate( FT_Bytes       table,
-                             FT_Bytes       limit,
-                             FT_Bool        exclusive,
-                             GXV_Validator  valid )
-  {
-    FT_Bytes   p = table;
-    FT_UShort  setting;
-
-
-    GXV_NAME_ENTER( "setting" );
-
-    GXV_LIMIT_CHECK( 2 );
-
-    setting = FT_NEXT_USHORT( p );
-
-    /* If we have exclusive setting, the setting should be odd. */
-    if ( exclusive && ( setting % 2 ) == 0 )
-      FT_INVALID_DATA;
-
-    gxv_feat_name_index_validate( p, limit, valid );
-
-    GXV_FEAT_DATA( setting ) = setting;
-
-    GXV_EXIT;
-  }
-
-
-  static void
-  gxv_feat_name_validate( FT_Bytes       table,
-                          FT_Bytes       limit,
-                          GXV_Validator  valid )
-  {
-    FT_Bytes   p             = table;
-    FT_UInt    reserved_size = GXV_FEAT_DATA( reserved_size );
-
-    FT_UShort  feature;
-    FT_UShort  nSettings;
-    FT_ULong   settingTable;
-    FT_UShort  featureFlags;
-
-    FT_Bool    exclusive;
-    FT_Int     last_setting;
-    FT_UInt    i;
-
-
-    GXV_NAME_ENTER( "name" );
-
-    /* feature + nSettings + settingTable + featureFlags */
-    GXV_LIMIT_CHECK( 2 + 2 + 4 + 2 );
-
-    feature = FT_NEXT_USHORT( p );
-    GXV_FEAT_DATA( feature ) = feature;
-
-    nSettings    = FT_NEXT_USHORT( p );
-    settingTable = FT_NEXT_ULONG ( p );
-    featureFlags = FT_NEXT_USHORT( p );
-
-    if ( settingTable < reserved_size )
-      FT_INVALID_OFFSET;
-
-    if ( valid->root->level == FT_VALIDATE_PARANOID   &&
-         ( featureFlags & GXV_FEAT_MASK_UNUSED ) == 0 )
-      FT_INVALID_DATA;
-
-    exclusive = FT_BOOL( featureFlags & GXV_FEAT_MASK_EXCLUSIVE_SETTINGS );
-    if ( exclusive )
-    {
-      FT_Byte  dynamic_default;
-
-
-      if ( featureFlags & GXV_FEAT_MASK_DYNAMIC_DEFAULT )
-        dynamic_default = (FT_Byte)( featureFlags &
-                                     GXV_FEAT_MASK_DEFAULT_SETTING );
-      else
-        dynamic_default = 0;
-
-      /* If exclusive, check whether default setting is in the range. */
-      if ( !( dynamic_default < nSettings ) )
-        FT_INVALID_FORMAT;
-    }
-
-    gxv_feat_registry_validate( feature, nSettings, exclusive, valid );
-
-    gxv_feat_name_index_validate( p, limit, valid );
-
-    p = valid->root->base + settingTable;
-    for ( last_setting = -1, i = 0; i < nSettings; i++ )
-    {
-      gxv_feat_setting_validate( p, limit, exclusive, valid );
-
-      if ( valid->root->level == FT_VALIDATE_PARANOID       &&
-           (FT_Int)GXV_FEAT_DATA( setting ) <= last_setting )
-        FT_INVALID_FORMAT;
-
-      last_setting = (FT_Int)GXV_FEAT_DATA( setting );
-      /* setting + nameIndex */
-      p += ( 2 + 2 );
-    }
-
-    GXV_EXIT;
-  }
-
-
-  /*************************************************************************/
-  /*************************************************************************/
-  /*****                                                               *****/
-  /*****                         feat TABLE                            *****/
-  /*****                                                               *****/
-  /*************************************************************************/
-  /*************************************************************************/
-
-  FT_LOCAL_DEF( void )
-  gxv_feat_validate( FT_Bytes      table,
-                     FT_Face       face,
-                     FT_Validator  ftvalid )
-  {
-    GXV_ValidatorRec  validrec;
-    GXV_Validator     valid = &validrec;
-
-    GXV_feat_DataRec  featrec;
-    GXV_feat_Data     feat = &featrec;
-
-    FT_Bytes          p     = table;
-    FT_Bytes          limit = 0;
-
-    FT_UInt           featureNameCount;
-
-    FT_UInt           i;
-    FT_Int            last_feature;
-
-
-    valid->root       = ftvalid;
-    valid->table_data = feat;
-    valid->face       = face;
-
-    FT_TRACE3(( "validating `feat' table\n" ));
-    GXV_INIT;
-
-    feat->reserved_size = 0;
-
-    /* version + featureNameCount + none_0 + none_1  */
-    GXV_LIMIT_CHECK( 4 + 2 + 2 + 4 );
-    feat->reserved_size += 4 + 2 + 2 + 4;
-
-    if ( FT_NEXT_ULONG( p ) != 0x00010000UL ) /* Version */
-      FT_INVALID_FORMAT;
-
-    featureNameCount = FT_NEXT_USHORT( p );
-    GXV_TRACE(( " (featureNameCount = %d)\n", featureNameCount ));
-
-    if ( valid->root->level != FT_VALIDATE_PARANOID )
-      p += 6;                   /* skip (none) and (none) */
-    else
-    {
-      if ( FT_NEXT_USHORT( p ) != 0 )
-        FT_INVALID_DATA;
-
-      if ( FT_NEXT_ULONG( p )  != 0 )
-        FT_INVALID_DATA;
-    }
-
-    feat->reserved_size += featureNameCount * ( 2 + 2 + 4 + 2 + 2 );
-
-    for ( last_feature = -1, i = 0; i < featureNameCount; i++ )
-    {
-      gxv_feat_name_validate( p, limit, valid );
-
-      if ( valid->root->level == FT_VALIDATE_PARANOID       &&
-           (FT_Int)GXV_FEAT_DATA( feature ) <= last_feature )
-        FT_INVALID_FORMAT;
-
-      last_feature = GXV_FEAT_DATA( feature );
-      p += 2 + 2 + 4 + 2 + 2;
-    }
-
-    FT_TRACE4(( "\n" ));
-  }
-
-
-/* END */