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kc3-lang/freetype/src/type1/t1parse.h
Werner Lemberg
- src/type1/t1parse.h
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/***************************************************************************/ /* */ /* t1parse.h */ /* */ /* Type 1 parser (specification). */ /* */ /* Copyright 1996-2000 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. */ /* */ /***************************************************************************/ /*************************************************************************/ /* */ /* The Type1 parser component is in charge of simply parsing the font */ /* input stream and convert simple tokens and elements into integers, */ /* floats, matrices, strings, etc. */ /* */ /* It is used by the Type1 loader. */ /* */ /*************************************************************************/ #ifndef T1PARSE_H #define T1PARSE_H #include <freetype/internal/ftstream.h> #ifdef FT_FLAT_COMPILE #include "t1tokens.h" #else #include <type1/t1tokens.h> #endif #ifdef __cplusplus extern "C" { #endif /*************************************************************************/ /* */ /* <Enum> */ /* T1_DictState */ /* */ /* <Description> */ /* An enumeration used to describe the Type 1 parser's state, i.e. */ /* which dictionary (or array) it is scanning and processing at the */ /* current moment. */ /* */ typedef enum T1_DictState_ { dict_none = 0, dict_font, /* parsing the font dictionary */ dict_fontinfo, /* parsing the font info dictionary */ dict_none2, /* beginning to parse the encrypted section */ dict_private, /* parsing the private dictionary */ dict_encoding, /* parsing the encoding array */ dict_subrs, /* parsing the subrs array */ dict_othersubrs, /* parsing the othersubrs array (?) */ dict_charstrings, /* parsing the charstrings dictionary */ dict_unknown_array, /* parsing/ignoring an unknown array */ dict_unknown_dict, /* parsing/ignoring an unknown dictionary */ dict_max /* do not remove from list */ } T1_DictState; /*************************************************************************/ /* */ /* <Struct> */ /* T1_Table */ /* */ /* <Description> */ /* A T1_Table is a simple object used to store an array of objects in */ /* a single memory block. */ /* */ /* <Fields> */ /* block :: The address in memory of the growheap's block. This */ /* can change between two object adds, due to */ /* reallocation. */ /* */ /* cursor :: The current top of the grow heap within its block. */ /* */ /* capacity :: The current size of the heap block. Increments by */ /* 1kByte chunks. */ /* */ /* max_elems :: The maximum number of elements in table. */ /* */ /* num_elems :: The current number of elements in table. */ /* */ /* elements :: A table of element addresses within the block. */ /* */ /* lengths :: A table of element sizes within the block. */ /* */ /* memory :: The object used for memory operations */ /* (alloc/realloc). */ /* */ typedef struct T1_Table_ { FT_Byte* block; /* current memory block */ FT_Int cursor; /* current cursor in memory block */ FT_Int capacity; /* current size of memory block */ FT_Int max_elems; FT_Int num_elems; FT_Byte** elements; /* addresses of table elements */ FT_Int* lengths; /* lengths of table elements */ FT_Memory memory; } T1_Table; /*************************************************************************/ /* */ /* <Struct> */ /* T1_Parser */ /* */ /* <Description> */ /* A Type 1 parser. This object is in charge of parsing Type 1 ASCII */ /* streams and builds dictionaries for a T1_Face object. */ /* */ /* <Fields> */ /* error :: The current error code. 0 means success. */ /* */ /* face :: The target T1_Face object being built. */ /* */ /* tokenizer :: The tokenizer (lexical analyser) used for */ /* processing the input stream. */ /* */ /* dump_tokens :: XXX */ /* */ /* stack :: The current token stack. Note that we don't */ /* use intermediate Postscript objects here! */ /* */ /* top :: The current top of token stack. */ /* */ /* limit :: The current upper bound of the token stack. */ /* Used for overflow checks. */ /* */ /* args :: The arguments of a given operator. Used and */ /* increased by the various CopyXXX() functions. */ /* */ /* state_index :: The index of the top of the dictionary state */ /* stack. */ /* */ /* state_stack :: The dictionary states stack. */ /* */ /* table :: A T1_Table object used to record various kinds */ /* of dictionaries or arrays (like `/Encoding', */ /* `/Subrs', `/CharStrings'). */ /* */ /* cur_name :: XXX */ /* */ /* encoding_type :: XXX */ /* */ /* encoding_names :: XXX */ /* */ /* encoding_lengths :: XXX */ /* */ /* encoding_offsets :: XXX */ /* */ /* subrs :: XXX */ /* */ /* charstrings :: XXX */ /* */ typedef struct T1_Parser_ { FT_Error error; T1_Face face; T1_Tokenizer tokenizer; FT_Bool dump_tokens; T1_Token stack[T1_MAX_STACK_DEPTH]; T1_Token* top; T1_Token* limit; T1_Token* args; FT_Int state_index; T1_DictState state_stack[T1_MAX_DICT_DEPTH]; T1_Table table; FT_Int cur_name; T1_EncodingType encoding_type; FT_Byte* encoding_names; FT_Int* encoding_lengths; FT_Byte** encoding_offsets; FT_Byte* subrs; FT_Byte* charstrings; } T1_Parser; LOCAL_DEF FT_Error T1_New_Table( T1_Table* table, FT_Int count, FT_Memory memory ); LOCAL_DEF FT_Error T1_Add_Table( T1_Table* table, FT_Int index, void* object, FT_Int length ); LOCAL_DEF void T1_Done_Table( T1_Table* table ); LOCAL_DEF FT_String* CopyString( T1_Parser* parser ); LOCAL_DEF FT_Long CopyInteger( T1_Parser* parser ); LOCAL_DEF FT_Bool CopyBoolean( T1_Parser* parser ); LOCAL_DEF FT_Long CopyFloat( T1_Parser* parser, FT_Int scale ); LOCAL_DEF void CopyBBox( T1_Parser* parser, FT_BBox* bbox ); LOCAL_DEF void CopyMatrix( T1_Parser* parser, FT_Matrix* matrix ); LOCAL_DEF void CopyArray( T1_Parser* parser, FT_Byte* num_elements, FT_Short* elements, FT_Int max_elements ); #ifdef __cplusplus } #endif #endif /* T1PARSE_H */ /* END */