ref: 5ef3c95377cdeac700242e3b21a4d2370007e4aa
dir: /src/type1/t1tokens.h/
/***************************************************************************/
/* */
/* t1tokens.h */
/* */
/* Type 1 tokenizer (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. */
/* */
/***************************************************************************/
#ifndef T1TOKENS_H
#define T1TOKENS_H
#ifdef FT_FLAT_COMPILE
#include "t1objs.h"
#else
#include <type1/t1objs.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* enum value of first keyword */
#define key_first_ 100
/* enum value of first immediate name */
#define imm_first_ 200
typedef enum T1_TokenType_
{
tok_error = 0,
tok_eof, /* end of file */
/* simple token types */
tok_keyword, /* keyword */
tok_number, /* number (integer or real) */
tok_string, /* postscript string */
tok_program, /* postscript program */
tok_immediate, /* any immediate name */
tok_array, /* matrix, array, etc.. */
tok_hexarray, /* array of hexadecimal nibbles */
tok_any, /* anything else */
/* Postscript keywords -- placed in lexicographical order */
key_RD_alternate = key_first_, /* `-|' = alternate form of RD */
key_ExpertEncoding,
key_ND,
key_NP,
key_RD,
key_StandardEncoding,
key_array,
key_begin,
key_closefile,
key_currentdict,
key_currentfile,
key_def,
key_dict,
key_dup,
key_eexec,
key_end,
key_execonly,
key_false,
key_for,
key_index,
key_noaccess,
key_put,
key_readonly,
key_true,
key_userdict,
key_NP_alternate, /* `|' = alternate form of NP */
key_ND_alternate, /* `|-' = alternate form of ND */
key_max, /* always keep this value there */
/* Postscript immediate names -- other names will be ignored, except */
/* in charstrings */
imm_RD_alternate = imm_first_, /* `-|' = alternate form of RD */
imm_notdef, /* `/.notdef' immediate */
imm_BlendAxisTypes,
imm_BlueFuzz,
imm_BlueScale,
imm_BlueShift,
imm_BlueValues,
imm_CharStrings,
imm_Encoding,
imm_FamilyBlues,
imm_FamilyName,
imm_FamilyOtherBlues,
imm_FID,
imm_FontBBox,
imm_FontID,
imm_FontInfo,
imm_FontMatrix,
imm_FontName,
imm_FontType,
imm_ForceBold,
imm_FullName,
imm_ItalicAngle,
imm_LanguageGroup,
imm_Metrics,
imm_MinFeature,
imm_ND,
imm_NP,
imm_Notice,
imm_OtherBlues,
imm_OtherSubrs,
imm_PaintType,
imm_Private,
imm_RD,
imm_RndStemUp,
imm_StdHW,
imm_StdVW,
imm_StemSnapH,
imm_StemSnapV,
imm_StrokeWidth,
imm_Subrs,
imm_UnderlinePosition,
imm_UnderlineThickness,
imm_UniqueID,
imm_Weight,
imm_isFixedPitch,
imm_lenIV,
imm_password,
imm_version,
imm_NP_alternate, /* `|' = alternate form of NP */
imm_ND_alternate, /* `|-' = alternate form of ND */
imm_max /* always keep this value here */
} T1_TokenType;
/* these arrays are visible for debugging purposes */
extern const char* t1_keywords[];
extern const char* t1_immediates[];
/*************************************************************************/
/* */
/* <Struct> */
/* T1_Token */
/* */
/* <Description> */
/* A structure used to describe a token in the current input stream. */
/* Note that the Type1 driver doesn't try to interpret tokens until */
/* it really needs to. */
/* */
/* <Fields> */
/* kind :: The token type. Describes the token to the loader. */
/* */
/* kind2 :: Detailed token type. */
/* */
/* start :: The index of the first character of token in the input */
/* stream. */
/* */
/* len :: The length of the token in characters. */
/* */
typedef struct T1_Token_
{
T1_TokenType kind; /* simple type */
T1_TokenType kind2; /* detailed type */
FT_Int start; /* index of first token character */
FT_Int len; /* length of token in chars */
} T1_Token;
typedef struct T1_TokenParser_
{
FT_Memory memory;
FT_Stream stream;
FT_Bool in_pfb; /* true if PFB file, PFA otherwise */
FT_Bool in_private; /* true if in private dictionary */
FT_Byte* base; /* base address of current read buffer */
FT_Long cursor; /* current position in read buffer */
FT_Long limit; /* limit of current read buffer */
FT_Long max; /* maximum size of read buffer */
FT_Error error; /* last error */
T1_Token token; /* last token read */
} T1_TokenParser;
/*************************************************************************/
/* */
/* <Type> */
/* T1_Tokenizer */
/* */
/* <Description> */
/* A handle to an object used to extract tokens from the input. The */
/* object is able to perform PFA/PFB recognition, eexec decryption of */
/* the private dictionary, as well as eexec decryption of the */
/* charstrings. */
/* */
typedef T1_TokenParser* T1_Tokenizer;
LOCAL_DEF
FT_Error New_Tokenizer( FT_Stream stream,
T1_Tokenizer* tokenizer );
LOCAL_DEF
FT_Error Done_Tokenizer( T1_Tokenizer tokenizer );
LOCAL_DEF
FT_Error Open_PrivateDict( T1_Tokenizer tokenizer );
LOCAL_DEF
FT_Error Read_Token( T1_Tokenizer tokenizer );
#if 0
LOCAL_DEF
FT_Error Read_CharStrings( T1_Tokenizer tokenizer,
FT_Int num_chars,
FT_Byte* buffer );
#endif /* 0 */
LOCAL_DEF
void t1_decrypt( FT_Byte* buffer,
FT_Int length,
FT_UShort seed );
#ifdef __cplusplus
}
#endif
#endif /* T1TOKENS_H */
/* END */