ref: 2fd491d5f3ec42287a49d1aa5c0166b46f417fde
dir: /src/type1z/z1parse.h/
/***************************************************************************/
/* */
/* z1parse.h */
/* */
/* Experimental 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. */
/* */
/***************************************************************************/
#ifndef Z1PARSE_H
#define Z1PARSE_H
#include <freetype/internal/t1types.h>
#include <freetype/internal/ftstream.h>
#ifdef __cplusplus
extern "C" {
#endif
/* simple enumeration type used to identify token types */
typedef enum Z1_Token_Type_
{
t1_token_none = 0,
t1_token_any,
t1_token_string,
t1_token_array,
/* do not remove */
t1_token_max
} Z1_Token_Type;
/* a simple structure used to identify tokens */
typedef struct Z1_Token_Rec_
{
FT_Byte* start; /* first character of token in input stream */
FT_Byte* limit; /* first character after the token */
Z1_Token_Type type; /* type of token.. */
} Z1_Token_Rec;
/* enumeration type used to identify object fields */
typedef enum Z1_Field_Type_
{
t1_field_none = 0,
t1_field_bool,
t1_field_integer,
t1_field_fixed,
t1_field_string,
t1_field_integer_array,
t1_field_fixed_array,
/* do not remove */
t1_field_max
} Z1_Field_Type;
/* structure type used to model object fields */
typedef struct Z1_Field_Rec_
{
Z1_Field_Type type; /* type of field */
FT_UInt offset; /* offset of field in object */
FT_Byte size; /* size of field in bytes */
FT_UInt array_max; /* maximum number of elements for array */
FT_UInt count_offset; /* offset of element count for arrays */
FT_Int flag_bit; /* bit number for field flag */
} Z1_Field_Rec;
#define Z1_FIELD_BOOL( _fname ) \
{ \
t1_field_bool, \
FT_FIELD_OFFSET( _fname ), \
FT_FIELD_SIZE( _fname ), \
0, 0, 0 \
}
#define Z1_FIELD_NUM( _fname ) \
{ \
t1_field_integer, \
FT_FIELD_OFFSET( _fname ), \
FT_FIELD_SIZE( _fname ), \
0, 0, 0 \
}
#define Z1_FIELD_FIXED( _fname, _power ) \
{ \
t1_field_fixed, \
FT_FIELD_OFFSET( _fname ), \
FT_FIELD_SIZE( _fname ), \
0, 0, 0 \
}
#define Z1_FIELD_STRING( _fname ) \
{ \
t1_field_string, \
FT_FIELD_OFFSET( _fname ), \
FT_FIELD_SIZE( _fname ), \
0, 0, 0 \
}
#define Z1_FIELD_NUM_ARRAY( _fname, _fcount, _fmax ) \
{ \
t1_field_integer, \
FT_FIELD_OFFSET( _fname ), \
FT_FIELD_SIZE_DELTA( _fname ), \
_fmax, \
FT_FIELD_OFFSET( _fcount ), \
0 \
}
#define Z1_FIELD_FIXED_ARRAY( _fname, _fcount, _fmax ) \
{ \
t1_field_fixed, \
FT_FIELD_OFFSET( _fname ), \
FT_FIELD_SIZE_DELTA( _fname ), \
_fmax, \
FT_FIELD_OFFSET( _fcount ), \
0 \
}
#define Z1_FIELD_NUM_ARRAY2( _fname, _fmax ) \
{ \
t1_field_integer, \
FT_FIELD_OFFSET( _fname ), \
FT_FIELD_SIZE_DELTA( _fname ), \
_fmax, \
0, 0 \
}
#define Z1_FIELD_FIXED_ARRAY2( _fname, _fmax ) \
{ \
t1_field_fixed, \
FT_FIELD_OFFSTE( _fname ), \
FT_FIELD_SIZE_DELTA( _fname ), \
_fmax, \
0, 0 \
}
/*************************************************************************/
/* */
/* <Struct> */
/* Z1_Table */
/* */
/* <Description> */
/* A Z1_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 the use of */
/* reallocation. */
/* */
/* cursor :: The current top of the grow heap within its block. */
/* */
/* capacity :: The current size of the heap block. Increments in */
/* 1kByte blocks. */
/* */
/* init :: A boolean. Set when the table has been initialized */
/* (the table user should set this field). */
/* */
/* max_elems :: The maximum number of elements in the table. */
/* */
/* num_elems :: The current number of elements in the table. */
/* */
/* elements :: A table of element addresses within the block. */
/* */
/* lengths :: A table of element sizes within the block. */
/* */
/* memory :: The memory object used for memory operations */
/* (allocation/reallocation). */
/* */
typedef struct Z1_Table_
{
FT_Byte* block; /* current memory block */
FT_Int cursor; /* current cursor in memory block */
FT_Int capacity; /* current size of memory block */
FT_Long init;
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;
} Z1_Table;
/*************************************************************************/
/* */
/* <Struct> */
/* Z1_Parser */
/* */
/* <Description> */
/* A Z1_Parser is an object used to parse a Type 1 fonts very */
/* quickly. */
/* */
/* <Fields> */
/* stream :: The current input stream. */
/* */
/* memory :: The current memory object. */
/* */
/* base_dict :: A pointer to the top-level dictionary. */
/* */
/* base_len :: The length in bytes of the top dictionary. */
/* */
/* private_dict :: A pointer to the private dictionary. */
/* */
/* private_len :: The length in bytes of the private dictionary. */
/* */
/* in_pfb :: A boolean. Indicates that we are handling a PFB */
/* file. */
/* */
/* in_memory :: A boolean. Indicates a memory-based stream. */
/* */
/* single_block :: A boolean. Indicates that the private dictionary */
/* is stored in lieu of the base dictionary. */
/* */
/* cursor :: The current parser cursor. */
/* */
/* limit :: The current parser limit (first byte after the */
/* current dictionary). */
/* */
/* error :: The current parsing error. */
/* */
typedef struct Z1_Parser_
{
FT_Stream stream;
FT_Memory memory;
FT_Byte* base_dict;
FT_Int base_len;
FT_Byte* private_dict;
FT_Int private_len;
FT_Byte in_pfb;
FT_Byte in_memory;
FT_Byte single_block;
FT_Byte* cursor;
FT_Byte* limit;
FT_Error error;
} Z1_Parser;
LOCAL_DEF
FT_Error Z1_New_Table( Z1_Table* table,
FT_Int count,
FT_Memory memory );
LOCAL_DEF
FT_Error Z1_Add_Table( Z1_Table* table,
FT_Int index,
void* object,
FT_Int length );
#if 0
LOCAL_DEF
void Z1_Done_Table( Z1_Table* table );
#endif
LOCAL_DEF
void Z1_Release_Table( Z1_Table* table );
LOCAL_DEF
FT_Long Z1_ToInt( Z1_Parser* parser );
LOCAL_DEF
FT_Long Z1_ToFixed( Z1_Parser* parser,
FT_Int power_ten );
LOCAL_DEF
FT_Int Z1_ToCoordArray( Z1_Parser* parser,
FT_Int max_coords,
FT_Short* coords );
LOCAL_DEF
FT_Int Z1_ToFixedArray( Z1_Parser* parser,
FT_Int max_values,
FT_Fixed* values,
FT_Int power_ten );
#if 0
LOCAL_DEF
FT_String* Z1_ToString( Z1_Parser* parser );
LOCAL_DEF
FT_Bool Z1_ToBool( Z1_Parser* parser );
#endif
LOCAL_DEF
void Z1_Skip_Spaces( Z1_Parser* parser );
LOCAL_DEF
void Z1_ToToken( Z1_Parser* parser,
Z1_Token_Rec* token );
LOCAL_FUNC
void Z1_ToTokenArray( Z1_Parser* parser,
Z1_Token_Rec* tokens,
FT_UInt max_tokens,
FT_Int* pnum_tokens );
LOCAL_DEF
FT_Error Z1_Load_Field( Z1_Parser* parser,
const Z1_Field_Rec* field,
void** objects,
FT_UInt max_objects,
FT_ULong* pflags );
LOCAL_DEF
FT_Error Z1_Load_Field_Table( Z1_Parser* parser,
const Z1_Field_Rec* field,
void** objects,
FT_UInt max_objects,
FT_ULong* pflags );
LOCAL_DEF
FT_Error Z1_New_Parser( Z1_Parser* parser,
FT_Stream stream,
FT_Memory memory );
LOCAL_DEF
FT_Error Z1_Get_Private_Dict( Z1_Parser* parser );
LOCAL_DEF
void Z1_Decrypt( FT_Byte* buffer,
FT_Int length,
FT_UShort seed );
LOCAL_DEF
void Z1_Done_Parser( Z1_Parser* parser );
#ifdef __cplusplus
}
#endif
#endif /* Z1PARSE_H */
/* END */