kc3-lang/freetype/src/cff/cffparse.h

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• Hash : 4d8db130
  Author :
  Date : 2023-03-20T16:53:51
  

  [cff] Simplify `t2_strings` management in the old engine. * src/cff/cffparse.c (cff_parser_run): Allocate the charstring buffers and the list nodes together so that they can be freed at once. (finalize_t2_strings): Removed as no longer needed. (cff_parser_done): Updated.

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• src/cff/cffparse.h

• /****************************************************************************
   *
   * cffparse.h
   *
   *   CFF token stream parser (specification)
   *
   * Copyright (C) 1996-2023 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.
   *
   */
  
  
  #ifndef CFFPARSE_H_
  #define CFFPARSE_H_
  
  
  #include <freetype/internal/cfftypes.h>
  #include <freetype/internal/ftobjs.h>
  
  
  FT_BEGIN_HEADER
  
  
    /* CFF uses constant parser stack size; */
    /* CFF2 can increase from default 193   */
  #define CFF_MAX_STACK_DEPTH  96
  
    /*
     * There are plans to remove the `maxstack' operator in a forthcoming
     * revision of the CFF2 specification, increasing the (then static) stack
     * size to 513.  By making the default stack size equal to the maximum
     * stack size, the operator is essentially disabled, which has the
     * desired effect in FreeType.
     */
  #define CFF2_MAX_STACK      513
  #define CFF2_DEFAULT_STACK  513
  
  #define CFF_CODE_TOPDICT    0x1000
  #define CFF_CODE_PRIVATE    0x2000
  #define CFF2_CODE_TOPDICT   0x3000
  #define CFF2_CODE_FONTDICT  0x4000
  #define CFF2_CODE_PRIVATE   0x5000
  
  
    typedef struct  CFF_ParserRec_
    {
      FT_Library  library;
      FT_Byte*    start;
      FT_Byte*    limit;
      FT_Byte*    cursor;
  
      FT_Byte**   stack;
      FT_Byte**   top;
      FT_UInt     stackSize;  /* allocated size */
  
  #ifdef CFF_CONFIG_OPTION_OLD_ENGINE
      FT_ListRec  t2_strings;
  #endif /* CFF_CONFIG_OPTION_OLD_ENGINE */
  
      FT_UInt     object_code;
      void*       object;
  
      FT_UShort   num_designs; /* a copy of `CFF_FontRecDict->num_designs' */
      FT_UShort   num_axes;    /* a copy of `CFF_FontRecDict->num_axes'    */
  
    } CFF_ParserRec, *CFF_Parser;
  
  
    FT_LOCAL( FT_Long )
    cff_parse_num( CFF_Parser  parser,
                   FT_Byte**   d );
  
    FT_LOCAL( FT_Error )
    cff_parser_init( CFF_Parser  parser,
                     FT_UInt     code,
                     void*       object,
                     FT_Library  library,
                     FT_UInt     stackSize,
                     FT_UShort   num_designs,
                     FT_UShort   num_axes );
  
    FT_LOCAL( void )
    cff_parser_done( CFF_Parser  parser );
  
    FT_LOCAL( FT_Error )
    cff_parser_run( CFF_Parser  parser,
                    FT_Byte*    start,
                    FT_Byte*    limit );
  
  
    enum
    {
      cff_kind_none = 0,
      cff_kind_num,
      cff_kind_fixed,
      cff_kind_fixed_thousand,
      cff_kind_string,
      cff_kind_bool,
      cff_kind_delta,
      cff_kind_callback,
      cff_kind_blend,
  
      cff_kind_max  /* do not remove */
    };
  
  
    /* now generate handlers for the most simple fields */
    typedef FT_Error  (*CFF_Field_Reader)( CFF_Parser  parser );
  
    typedef struct  CFF_Field_Handler_
    {
      int               kind;
      int               code;
      FT_UInt           offset;
      FT_Byte           size;
      CFF_Field_Reader  reader;
      FT_UInt           array_max;
      FT_UInt           count_offset;
  
  #ifdef FT_DEBUG_LEVEL_TRACE
      const char*       id;
  #endif
  
    } CFF_Field_Handler;
  
  
  FT_END_HEADER
  
  
  #endif /* CFFPARSE_H_ */
  
  
  /* END */
  

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