ref: 5a3490e054bda8a318ebde482c7fb30213cab3d9
dir: /src/cff/cffparse.h/
/***************************************************************************/ /* */ /* cffparse.h */ /* */ /* CFF token stream parser (specification) */ /* */ /* Copyright 1996-2017 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 <ft2build.h> #include "cfftypes.h" #include FT_INTERNAL_OBJECTS_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 */ 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 */