forked from minhngoc25a/freetype2
354 lines
14 KiB
C
354 lines
14 KiB
C
/***************************************************************************/
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/* */
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/* cidparse.h */
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/* */
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/* CID-keyed Type1 parser (specification). */
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/* */
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/* Copyright 1996-2000 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef CIDPARSE_H
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#define CIDPARSE_H
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#include <freetype/internal/t1types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if 0
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* CID_Table */
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/* */
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/* <Description> */
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/* A CID_Table is a simple object used to store an array of objects */
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/* in a single memory block. */
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/* */
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/* <Fields> */
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/* block :: The address in memory of the growheap's block. This */
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/* can change between two object adds, due to the use */
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/* of `realloc()'. */
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/* */
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/* cursor :: The current top of the growheap within its block. */
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/* */
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/* capacity :: The current size of the heap block. Increments by */
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/* blocks of 1 kByte. */
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/* */
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/* init :: A boolean. Set when the table has been initialized */
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/* (the table user should set this field). */
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/* */
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/* max_elems :: The maximal number of elements in the table. */
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/* */
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/* num_elems :: The current number of elements (in use) in the table. */
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/* */
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/* elements :: A table of element addresses within the block. */
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/* */
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/* lengths :: A table of element sizes within the block. */
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/* */
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/* memory :: The memory object used for memory operations */
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/* (allocation resp. reallocation). */
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/* */
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typedef struct CID_Table_
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{
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FT_Byte* block; /* current memory block */
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FT_Int cursor; /* current cursor in memory block */
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FT_Int capacity; /* current size of memory block */
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FT_Long init;
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FT_Int max_elems;
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FT_Int num_elems;
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FT_Byte** elements; /* addresses of table elements */
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FT_Int* lengths; /* lengths of table elements */
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FT_Memory memory;
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} CID_Table;
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LOCAL_DEF
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FT_Error CID_New_Table( CID_Table* table,
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FT_Int count,
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CID_Memory memory );
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LOCAL_DEF
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FT_Error CID_Add_Table( CID_Table* table,
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FT_Int index,
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void* object,
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FT_Int length );
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LOCAL_DEF
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void CID_Release_Table( CID_Table* table );
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#endif /* 0 */
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* CID_Parser */
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/* */
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/* <Description> */
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/* A CID_Parser is an object used to parse a Type 1 fonts very */
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/* quickly. */
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/* */
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/* <Fields> */
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/* stream :: The current input stream. */
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/* */
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/* memory :: The current memory object. */
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/* */
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/* postscript :: A pointer to the data to be parsed. */
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/* */
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/* postscript_len :: The length of the data to be parsed. */
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/* */
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/* data_offset :: The start position of the binary data (i.e., the */
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/* end of the data to be parsed. */
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/* */
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/* cursor :: The current parser cursor. */
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/* */
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/* limit :: The current parser limit (i.e., the first byte */
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/* after the current dictionary). */
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/* */
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/* error :: The current parsing error. */
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/* */
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/* cid :: A structure which holds the information about */
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/* the current font. */
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/* */
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/* num_dict :: The number of font dictionaries. */
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/* */
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typedef struct CID_Parser_
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{
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FT_Stream stream;
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FT_Memory memory;
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FT_Byte* postscript;
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FT_Int postscript_len;
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FT_ULong data_offset;
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FT_Byte* cursor;
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FT_Byte* limit;
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FT_Error error;
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CID_Info* cid;
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FT_Int num_dict;
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} CID_Parser;
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LOCAL_DEF
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FT_Error CID_New_Parser( CID_Parser* parser,
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FT_Stream stream,
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FT_Memory memory );
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LOCAL_DEF
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void CID_Done_Parser( CID_Parser* parser );
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/*************************************************************************/
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/* */
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/* PARSING ROUTINES */
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/* */
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/*************************************************************************/
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LOCAL_DEF
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FT_Long CID_ToInt( CID_Parser* parser );
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LOCAL_DEF
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FT_Int CID_ToCoordArray( CID_Parser* parser,
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FT_Int max_coords,
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FT_Short* coords );
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LOCAL_DEF
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FT_Int CID_ToFixedArray( CID_Parser* parser,
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FT_Int max_values,
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FT_Fixed* values,
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FT_Int power_ten );
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LOCAL_DEF
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void CID_Skip_Spaces( CID_Parser* parser );
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/* simple enumeration type used to identify token types */
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typedef enum CID_Token_Type_
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{
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t1_token_none = 0,
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t1_token_any,
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t1_token_string,
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t1_token_array,
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/* do not remove */
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t1_token_max
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} CID_Token_Type;
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/* a simple structure used to identify tokens */
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typedef struct CID_Token_Rec_
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{
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FT_Byte* start; /* first character of token in input stream */
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FT_Byte* limit; /* first character after the token */
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CID_Token_Type type; /* type of token */
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} CID_Token_Rec;
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LOCAL_DEF
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void CID_ToToken( CID_Parser* parser,
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CID_Token_Rec* token );
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/* enumeration type used to identify object fields */
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typedef enum CID_Field_Type_
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{
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t1_field_none = 0,
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t1_field_bool,
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t1_field_integer,
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t1_field_fixed,
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t1_field_string,
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t1_field_integer_array,
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t1_field_fixed_array,
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t1_field_callback,
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/* do not remove */
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t1_field_max
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} CID_Field_Type;
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typedef enum CID_Field_Location_
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{
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t1_field_cid_info,
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t1_field_font_dict,
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t1_field_font_info,
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t1_field_private,
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/* do not remove */
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t1_field_location_max
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} CID_Field_Location;
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typedef FT_Error (*CID_Field_Parser)( CID_Face face,
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CID_Parser* parser );
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/* structure type used to model object fields */
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typedef struct CID_Field_Rec_
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{
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const char* ident; /* field identifier */
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CID_Field_Location location;
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CID_Field_Type type; /* type of field */
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CID_Field_Parser reader;
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FT_UInt offset; /* offset of field in object */
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FT_UInt size; /* size of field in bytes */
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FT_UInt array_max; /* maximal number of elements for */
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/* array */
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FT_UInt count_offset; /* offset of element count for */
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/* arrays */
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} CID_Field_Rec;
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#define CID_FIELD_REF( s, f ) ( ((s*)0)->f )
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#define CID_NEW_SIMPLE_FIELD( _ident, _type, _fname ) \
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{ \
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_ident, T1CODE, _type, \
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0, \
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(FT_UInt)(char*)&CID_FIELD_REF( T1TYPE, _fname ), \
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sizeof ( CID_FIELD_REF( T1TYPE, _fname ) ), \
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0, 0 \
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},
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#define CID_NEW_CALLBACK_FIELD( _ident, _reader ) \
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{ \
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_ident, T1CODE, t1_field_callback, \
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_reader, \
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0, 0, \
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0, 0 \
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},
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#define CID_NEW_TABLE_FIELD( _ident, _type, _fname, _max ) \
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{ \
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_ident, T1CODE, _type, \
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0, \
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(FT_UInt)(char*)&CID_FIELD_REF( T1TYPE, _fname ), \
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sizeof ( CID_FIELD_REF( T1TYPE, _fname )[0] ), \
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_max, \
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(FT_UInt)(char*)&CID_FIELD_REF( T1TYPE, num_ ## _fname ) \
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},
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#define CID_NEW_TABLE_FIELD2( _ident, _type, _fname, _max ) \
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{ \
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_ident, T1CODE, _type, \
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0, \
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(FT_UInt)(char*)&CID_FIELD_REF( T1TYPE, _fname ), \
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sizeof ( CID_FIELD_REF( T1TYPE, _fname )[0] ), \
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_max, 0 \
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},
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#define CID_FIELD_BOOL( _ident, _fname ) \
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CID_NEW_SIMPLE_FIELD( _ident, t1_field_bool, _fname )
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#define CID_FIELD_NUM( _ident, _fname ) \
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CID_NEW_SIMPLE_FIELD( _ident, t1_field_integer, _fname )
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#define CID_FIELD_FIXED( _ident, _fname ) \
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CID_NEW_SIMPLE_FIELD( _ident, t1_field_fixed, _fname )
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#define CID_FIELD_STRING( _ident, _fname ) \
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CID_NEW_SIMPLE_FIELD( _ident, t1_field_string, _fname )
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#define CID_FIELD_NUM_TABLE( _ident, _fname, _fmax ) \
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CID_NEW_TABLE_FIELD( _ident, t1_field_integer_array, \
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_fname, _fmax )
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#define CID_FIELD_FIXED_TABLE( _ident, _fname, _fmax ) \
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CID_NEW_TABLE_FIELD( _ident, t1_field_fixed_array, \
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_fname, _fmax )
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#define CID_FIELD_NUM_TABLE2( _ident, _fname, _fmax ) \
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CID_NEW_TABLE_FIELD2( _ident, t1_field_integer_array, \
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_fname, _fmax )
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#define CID_FIELD_FIXED_TABLE2( _ident, _fname, _fmax ) \
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CID_NEW_TABLE_FIELD2( _ident, t1_field_fixed_array, \
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_fname, _fmax )
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#define CID_FIELD_CALLBACK( _ident, _name ) \
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CID_NEW_CALLBACK_FIELD( _ident, parse_ ## _name )
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LOCAL_DEF
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FT_Error CID_Load_Field( CID_Parser* parser,
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const CID_Field_Rec* field,
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void* object );
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LOCAL_DEF
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FT_Error CID_Load_Field_Table( CID_Parser* parser,
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const CID_Field_Rec* field,
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void* object );
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#ifdef __cplusplus
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}
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#endif
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#endif /* CIDPARSE_H */
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/* END */
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