ref: f9b8dec437dd84060bcd82a555c92fecff848aa7
dir: /src/cid/cidparse.h/
/***************************************************************************/
/* */
/* cidparse.h */
/* */
/* CID-keyed Type1 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 CIDPARSE_H
#define CIDPARSE_H
#include <freetype/internal/t1types.h>
#ifdef __cplusplus
extern "C" {
#endif
#if 0
/*************************************************************************/
/* */
/* <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 the use */
/* of `realloc()'. */
/* */
/* cursor :: The current top of the growheap within its block. */
/* */
/* capacity :: The current size of the heap block. Increments by */
/* blocks of 1 kByte. */
/* */
/* init :: A boolean. Set when the table has been initialized */
/* (the table user should set this field). */
/* */
/* max_elems :: The maximal number of elements in the table. */
/* */
/* num_elems :: The current number of elements (in use) 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 resp. reallocation). */
/* */
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_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;
} T1_Table;
LOCAL_DEF
FT_Error T1_New_Table( T1_Table* table,
FT_Int count,
T1_Memory memory );
LOCAL_DEF
FT_Error T1_Add_Table( T1_Table* table,
FT_Int index,
void* object,
FT_Int length );
LOCAL_DEF
void T1_Release_Table( T1_Table* table );
#endif /* 0 */
/*************************************************************************/
/* */
/* <Struct> */
/* CID_Parser */
/* */
/* <Description> */
/* A CID_Parser is an object used to parse a Type 1 fonts very */
/* quickly. */
/* */
/* <Fields> */
/* stream :: The current input stream. */
/* */
/* memory :: The current memory object. */
/* */
/* postscript :: A pointer to the data to be parsed. */
/* */
/* postscript_len :: The length of the data to be parsed. */
/* */
/* data_offset :: The start position of the binary data (i.e., the */
/* end of the data to be parsed. */
/* */
/* cursor :: The current parser cursor. */
/* */
/* limit :: The current parser limit (i.e., the first byte */
/* after the current dictionary). */
/* */
/* error :: The current parsing error. */
/* */
/* cid :: A structure which holds the information about */
/* the current font. */
/* */
/* num_dict :: The number of font dictionaries. */
/* */
typedef struct CID_Parser_
{
FT_Stream stream;
FT_Memory memory;
FT_Byte* postscript;
FT_Int postscript_len;
FT_ULong data_offset;
FT_Byte* cursor;
FT_Byte* limit;
FT_Error error;
CID_Info* cid;
FT_Int num_dict;
} CID_Parser;
LOCAL_DEF
FT_Error CID_New_Parser( CID_Parser* parser,
FT_Stream stream,
FT_Memory memory );
LOCAL_DEF
void CID_Done_Parser( CID_Parser* parser );
/*************************************************************************/
/* */
/* PARSING ROUTINES */
/* */
/*************************************************************************/
LOCAL_DEF
FT_Long CID_ToInt( CID_Parser* parser );
LOCAL_DEF
FT_Int CID_ToCoordArray( CID_Parser* parser,
FT_Int max_coords,
FT_Short* coords );
LOCAL_DEF
FT_Int CID_ToFixedArray( CID_Parser* parser,
FT_Int max_values,
FT_Fixed* values,
FT_Int power_ten );
LOCAL_DEF
void CID_Skip_Spaces( CID_Parser* parser );
/* simple enumeration type used to identify token types */
typedef enum T1_Token_Type_
{
t1_token_none = 0,
t1_token_any,
t1_token_string,
t1_token_array,
/* do not remove */
t1_token_max
} T1_Token_Type;
/* a simple structure used to identify tokens */
typedef struct T1_Token_Rec_
{
FT_Byte* start; /* first character of token in input stream */
FT_Byte* limit; /* first character after the token */
T1_Token_Type type; /* type of token.. */
} T1_Token_Rec;
LOCAL_DEF
void CID_ToToken( CID_Parser* parser,
T1_Token_Rec* token );
/* enumeration type used to identify object fields */
typedef enum T1_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,
t1_field_callback,
/* do not remove */
t1_field_max
} T1_Field_Type;
typedef enum T1_Field_Location_
{
t1_field_cid_info,
t1_field_font_dict,
t1_field_font_info,
t1_field_private,
/* do not remove */
t1_field_location_max
} T1_Field_Location;
typedef FT_Error (*CID_Field_Parser)( CID_Face face,
CID_Parser* parser );
/* structure type used to model object fields */
typedef struct T1_Field_Rec_
{
const char* ident; /* field identifier */
T1_Field_Location location;
T1_Field_Type type; /* type of field */
CID_Field_Parser reader;
FT_UInt offset; /* offset of field in object */
FT_UInt size; /* size of field in bytes */
FT_UInt array_max; /* maximal number of elements for */
/* array */
FT_UInt count_offset; /* offset of element count for */
/* arrays */
} T1_Field_Rec;
#define T1_FIELD_REF( s, f ) ( ((s*)0)->f )
#define T1_NEW_SIMPLE_FIELD( _ident, _type, _fname ) \
{ \
_ident, T1CODE, _type, \
0, \
(FT_UInt)(char*)&T1_FIELD_REF( T1TYPE, _fname ), \
sizeof ( T1_FIELD_REF( T1TYPE, _fname ) ), \
0, 0 \
},
#define T1_NEW_CALLBACK_FIELD( _ident, _reader ) \
{ \
_ident, T1CODE, t1_field_callback, \
_reader, \
0, 0, \
0, 0 \
},
#define T1_NEW_TABLE_FIELD( _ident, _type, _fname, _max ) \
{ \
_ident, T1CODE, _type, \
0, \
(FT_UInt)(char*)&T1_FIELD_REF( T1TYPE, _fname ), \
sizeof ( T1_FIELD_REF( T1TYPE, _fname )[0] ), \
_max, \
(FT_UInt)(char*)&T1_FIELD_REF( T1TYPE, num_ ## _fname ) \
},
#define T1_NEW_TABLE_FIELD2( _ident, _type, _fname, _max ) \
{ \
_ident, T1CODE, _type, \
0, \
(FT_UInt)(char*)&T1_FIELD_REF( T1TYPE, _fname ), \
sizeof ( T1_FIELD_REF( T1TYPE, _fname )[0] ), \
_max, 0 \
},
#define T1_FIELD_BOOL( _ident, _fname ) \
T1_NEW_SIMPLE_FIELD( _ident, t1_field_bool, _fname )
#define T1_FIELD_NUM( _ident, _fname ) \
T1_NEW_SIMPLE_FIELD( _ident, t1_field_integer, _fname )
#define T1_FIELD_FIXED( _ident, _fname ) \
T1_NEW_SIMPLE_FIELD( _ident, t1_field_fixed, _fname )
#define T1_FIELD_STRING( _ident, _fname ) \
T1_NEW_SIMPLE_FIELD( _ident, t1_field_string, _fname )
#define T1_FIELD_NUM_TABLE( _ident, _fname, _fmax ) \
T1_NEW_TABLE_FIELD( _ident, t1_field_integer_array, \
_fname, _fmax )
#define T1_FIELD_FIXED_TABLE( _ident, _fname, _fmax ) \
T1_NEW_TABLE_FIELD( _ident, t1_field_fixed_array, \
_fname, _fmax )
#define T1_FIELD_NUM_TABLE2( _ident, _fname, _fmax ) \
T1_NEW_TABLE_FIELD2( _ident, t1_field_integer_array, \
_fname, _fmax )
#define T1_FIELD_FIXED_TABLE2( _ident, _fname, _fmax ) \
T1_NEW_TABLE_FIELD2( _ident, t1_field_fixed_array, \
_fname, _fmax )
#define T1_FIELD_CALLBACK( _ident, _name ) \
T1_NEW_CALLBACK_FIELD( _ident, parse_ ## _name )
LOCAL_DEF
FT_Error CID_Load_Field( CID_Parser* parser,
const T1_Field_Rec* field,
void* object );
LOCAL_DEF
FT_Error CID_Load_Field_Table( CID_Parser* parser,
const T1_Field_Rec* field,
void* object );
#ifdef __cplusplus
}
#endif
#endif /* CIDPARSE_H */
/* END */