Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/otvalid/otvbase.c

Index: third_party/freetype2/src/src/otvalid/otvbase.c
diff --git a/third_party/freetype2/src/src/otvalid/otvbase.c b/third_party/freetype2/src/src/otvalid/otvbase.c
new file mode 100644
index 0000000000000000000000000000000000000000..24038c63b78cb4a073f7fa48ab2915214317dab4
--- /dev/null
+++ b/third_party/freetype2/src/src/otvalid/otvbase.c
@@ -0,0 +1,318 @@
+/***************************************************************************/
+/*                                                                         */
+/*  otvbase.c                                                              */
+/*                                                                         */
+/*    OpenType BASE table validation (body).                               */
+/*                                                                         */
+/*  Copyright 2004-2015 by                                                 */
+/*  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.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include "otvalid.h"
+#include "otvcommn.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_otvbase
+
+
+  static void
+  otv_BaseCoord_validate( FT_Bytes       table,
+                          OTV_Validator  otvalid )
+  {
+    FT_Bytes  p = table;
+    FT_UInt   BaseCoordFormat;
+
+
+    OTV_NAME_ENTER( "BaseCoord" );
+
+    OTV_LIMIT_CHECK( 4 );
+    BaseCoordFormat = FT_NEXT_USHORT( p );
+    p += 2;     /* skip Coordinate */
+
+    OTV_TRACE(( " (format %d)\n", BaseCoordFormat ));
+
+    switch ( BaseCoordFormat )
+    {
+    case 1:     /* BaseCoordFormat1 */
+      break;
+
+    case 2:     /* BaseCoordFormat2 */
+      OTV_LIMIT_CHECK( 4 );   /* ReferenceGlyph, BaseCoordPoint */
+      break;
+
+    case 3:     /* BaseCoordFormat3 */
+      OTV_LIMIT_CHECK( 2 );
+      /* DeviceTable */
+      otv_Device_validate( table + FT_NEXT_USHORT( p ), otvalid );
+      break;
+
+    default:
+      FT_INVALID_FORMAT;
+    }
+
+    OTV_EXIT;
+  }
+
+
+  static void
+  otv_BaseTagList_validate( FT_Bytes       table,
+                            OTV_Validator  otvalid )
+  {
+    FT_Bytes  p = table;
+    FT_UInt   BaseTagCount;
+
+
+    OTV_NAME_ENTER( "BaseTagList" );
+
+    OTV_LIMIT_CHECK( 2 );
+
+    BaseTagCount = FT_NEXT_USHORT( p );
+
+    OTV_TRACE(( " (BaseTagCount = %d)\n", BaseTagCount ));
+
+    OTV_LIMIT_CHECK( BaseTagCount * 4 );          /* BaselineTag */
+
+    OTV_EXIT;
+  }
+
+
+  static void
+  otv_BaseValues_validate( FT_Bytes       table,
+                           OTV_Validator  otvalid )
+  {
+    FT_Bytes  p = table;
+    FT_UInt   BaseCoordCount;
+
+
+    OTV_NAME_ENTER( "BaseValues" );
+
+    OTV_LIMIT_CHECK( 4 );
+
+    p             += 2;                     /* skip DefaultIndex */
+    BaseCoordCount = FT_NEXT_USHORT( p );
+
+    OTV_TRACE(( " (BaseCoordCount = %d)\n", BaseCoordCount ));
+
+    OTV_LIMIT_CHECK( BaseCoordCount * 2 );
+
+    /* BaseCoord */
+    for ( ; BaseCoordCount > 0; BaseCoordCount-- )
+      otv_BaseCoord_validate( table + FT_NEXT_USHORT( p ), otvalid );
+
+    OTV_EXIT;
+  }
+
+
+  static void
+  otv_MinMax_validate( FT_Bytes       table,
+                       OTV_Validator  otvalid )
+  {
+    FT_Bytes  p = table;
+    FT_UInt   table_size;
+    FT_UInt   FeatMinMaxCount;
+
+    OTV_OPTIONAL_TABLE( MinCoord );
+    OTV_OPTIONAL_TABLE( MaxCoord );
+
+
+    OTV_NAME_ENTER( "MinMax" );
+
+    OTV_LIMIT_CHECK( 6 );
+
+    OTV_OPTIONAL_OFFSET( MinCoord );
+    OTV_OPTIONAL_OFFSET( MaxCoord );
+    FeatMinMaxCount = FT_NEXT_USHORT( p );
+
+    OTV_TRACE(( " (FeatMinMaxCount = %d)\n", FeatMinMaxCount ));
+
+    table_size = FeatMinMaxCount * 8 + 6;
+
+    OTV_SIZE_CHECK( MinCoord );
+    if ( MinCoord )
+      otv_BaseCoord_validate( table + MinCoord, otvalid );
+
+    OTV_SIZE_CHECK( MaxCoord );
+    if ( MaxCoord )
+      otv_BaseCoord_validate( table + MaxCoord, otvalid );
+
+    OTV_LIMIT_CHECK( FeatMinMaxCount * 8 );
+
+    /* FeatMinMaxRecord */
+    for ( ; FeatMinMaxCount > 0; FeatMinMaxCount-- )
+    {
+      p += 4;                           /* skip FeatureTableTag */
+
+      OTV_OPTIONAL_OFFSET( MinCoord );
+      OTV_OPTIONAL_OFFSET( MaxCoord );
+
+      OTV_SIZE_CHECK( MinCoord );
+      if ( MinCoord )
+        otv_BaseCoord_validate( table + MinCoord, otvalid );
+
+      OTV_SIZE_CHECK( MaxCoord );
+      if ( MaxCoord )
+        otv_BaseCoord_validate( table + MaxCoord, otvalid );
+    }
+
+    OTV_EXIT;
+  }
+
+
+  static void
+  otv_BaseScript_validate( FT_Bytes       table,
+                           OTV_Validator  otvalid )
+  {
+    FT_Bytes  p = table;
+    FT_UInt   table_size;
+    FT_UInt   BaseLangSysCount;
+
+    OTV_OPTIONAL_TABLE( BaseValues    );
+    OTV_OPTIONAL_TABLE( DefaultMinMax );
+
+
+    OTV_NAME_ENTER( "BaseScript" );
+
+    OTV_LIMIT_CHECK( 6 );
+    OTV_OPTIONAL_OFFSET( BaseValues    );
+    OTV_OPTIONAL_OFFSET( DefaultMinMax );
+    BaseLangSysCount = FT_NEXT_USHORT( p );
+
+    OTV_TRACE(( " (BaseLangSysCount = %d)\n", BaseLangSysCount ));
+
+    table_size = BaseLangSysCount * 6 + 6;
+
+    OTV_SIZE_CHECK( BaseValues );
+    if ( BaseValues )
+      otv_BaseValues_validate( table + BaseValues, otvalid );
+
+    OTV_SIZE_CHECK( DefaultMinMax );
+    if ( DefaultMinMax )
+      otv_MinMax_validate( table + DefaultMinMax, otvalid );
+
+    OTV_LIMIT_CHECK( BaseLangSysCount * 6 );
+
+    /* BaseLangSysRecord */
+    for ( ; BaseLangSysCount > 0; BaseLangSysCount-- )
+    {
+      p += 4;       /* skip BaseLangSysTag */
+
+      otv_MinMax_validate( table + FT_NEXT_USHORT( p ), otvalid );
+    }
+
+    OTV_EXIT;
+  }
+
+
+  static void
+  otv_BaseScriptList_validate( FT_Bytes       table,
+                               OTV_Validator  otvalid )
+  {
+    FT_Bytes  p = table;
+    FT_UInt   BaseScriptCount;
+
+
+    OTV_NAME_ENTER( "BaseScriptList" );
+
+    OTV_LIMIT_CHECK( 2 );
+    BaseScriptCount = FT_NEXT_USHORT( p );
+
+    OTV_TRACE(( " (BaseScriptCount = %d)\n", BaseScriptCount ));
+
+    OTV_LIMIT_CHECK( BaseScriptCount * 6 );
+
+    /* BaseScriptRecord */
+    for ( ; BaseScriptCount > 0; BaseScriptCount-- )
+    {
+      p += 4;       /* skip BaseScriptTag */
+
+      /* BaseScript */
+      otv_BaseScript_validate( table + FT_NEXT_USHORT( p ), otvalid );
+    }
+
+    OTV_EXIT;
+  }
+
+
+  static void
+  otv_Axis_validate( FT_Bytes       table,
+                     OTV_Validator  otvalid )
+  {
+    FT_Bytes  p = table;
+    FT_UInt   table_size;
+
+    OTV_OPTIONAL_TABLE( BaseTagList );
+
+
+    OTV_NAME_ENTER( "Axis" );
+
+    OTV_LIMIT_CHECK( 4 );
+    OTV_OPTIONAL_OFFSET( BaseTagList );
+
+    table_size = 4;
+
+    OTV_SIZE_CHECK( BaseTagList );
+    if ( BaseTagList )
+      otv_BaseTagList_validate( table + BaseTagList, otvalid );
+
+    /* BaseScriptList */
+    otv_BaseScriptList_validate( table + FT_NEXT_USHORT( p ), otvalid );
+
+    OTV_EXIT;
+  }
+
+
+  FT_LOCAL_DEF( void )
+  otv_BASE_validate( FT_Bytes      table,
+                     FT_Validator  ftvalid )
+  {
+    OTV_ValidatorRec  otvalidrec;
+    OTV_Validator     otvalid = &otvalidrec;
+    FT_Bytes          p       = table;
+    FT_UInt           table_size;
+
+    OTV_OPTIONAL_TABLE( HorizAxis );
+    OTV_OPTIONAL_TABLE( VertAxis  );
+
+
+    otvalid->root = ftvalid;
+
+    FT_TRACE3(( "validating BASE table\n" ));
+    OTV_INIT;
+
+    OTV_LIMIT_CHECK( 6 );
+
+    if ( FT_NEXT_ULONG( p ) != 0x10000UL )      /* Version */
+      FT_INVALID_FORMAT;
+
+    table_size = 6;
+
+    OTV_OPTIONAL_OFFSET( HorizAxis );
+    OTV_SIZE_CHECK( HorizAxis );
+    if ( HorizAxis )
+      otv_Axis_validate( table + HorizAxis, otvalid );
+
+    OTV_OPTIONAL_OFFSET( VertAxis );
+    OTV_SIZE_CHECK( VertAxis );
+    if ( VertAxis )
+      otv_Axis_validate( table + VertAxis, otvalid );
+
+    FT_TRACE4(( "\n" ));
+  }
+
+
+/* END */