kc3-lang/freetype/src/type1z/t1parse.h

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• Hash : f9b8dec4
  Author :
  Date : 2000-06-16T19:34:52
  

  major reformatting of the modules source code in order to get rid of most of the basic types redefinitions (i.e. FT_Int instead of "FT_Int", etc..) The format-specific prefixs like "TT_", "T1_", "T2_" & 'CID_" are now only used in relevant structures.. fixed Werner's fix to t2gload.c :-) other small bug fixes

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• src/type1z/t1parse.h

• /*******************************************************************
   *
   *  t1parse.h                                                   2.0
   *
   *    Type1 parser.
   *
   *  Copyright 1996-1998 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 Type 1 parser is in charge of the following:
   *
   *   - provide an implementation of a growing sequence of
   *     objects called a T1_Table (used to build various tables
   *     needed by the loader).
   *
   *   - opening .pfb and .pfa files to extract their top-level
   *     and private dictionaries
   *
   *   - read numbers, arrays & strings from any dictionary
   *
   *  See "t1load.c" to see how data is loaded from the font file
   *
   ******************************************************************/
  
  #ifndef T1PARSE_H
  #define T1PARSE_H
  
  #include <freetype/internal/t1types.h>
  
  #ifdef __cplusplus
    extern "C" {
  #endif
  
  
    /* 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;  
  
    /* 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,
      
      /* do not remove */
      t1_field_max
      
    } T1_Field_Type;
  
    /* structure type used to model object fields */
    typedef struct T1_Field_Rec_
    {
      T1_Field_Type  type;          /* type of field                        */
      FT_UInt        offset;        /* offset of field in object            */
      FT_UInt        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            */
     
    } T1_Field_Rec;
  
  #define T1_FIELD_REF(s,f)  (((s*)0)->f)
  
  #define T1_FIELD_BOOL( _ftype, _fname )               \
      { t1_field_bool,                                  \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),   \
        sizeof(T1_FIELD_REF(_ftype,_fname)),            \
        0, 0, 0 }
  
  #define T1_FIELD_NUM( _ftype, _fname )                \
      { t1_field_integer,                               \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),   \
        sizeof(T1_FIELD_REF(_ftype,_fname)),            \
        0, 0, 0 }
  
  #define T1_FIELD_FIXED( _ftype, _fname, _power )      \
      { t1_field_fixed,                                 \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),   \
        sizeof(T1_FIELD_REF(_ftype,_fname)),            \
        0, 0, 0 }
  
  #define T1_FIELD_STRING( _ftype, _fname )             \
      { t1_field_string,                                \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),   \
        sizeof(T1_FIELD_REF(_ftype,_fname)),            \
        0, 0, 0 }
  
  #define T1_FIELD_NUM_ARRAY( _ftype, _fname, _fcount, _fmax ) \
      { t1_field_integer,                                      \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),          \
        sizeof(T1_FIELD_REF(_ftype,_fname)[0]),                \
        _fmax,                                                 \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fcount),         \
        0 }
  
  #define T1_FIELD_FIXED_ARRAY( _ftype, _fname, _fcount, _fmax ) \
      { t1_field_fixed,                                          \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),            \
        sizeof(T1_FIELD_REF(_ftype,_fname)[0]),                  \
        _fmax,                                                   \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fcount),           \
        0 }
  
  #define T1_FIELD_NUM_ARRAY2( _ftype, _fname, _fmax )         \
      { t1_field_integer,                                      \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),          \
        sizeof(T1_FIELD_REF(_ftype,_fname)[0]),                \
        _fmax,                                                 \
        0, 0 }
  
  #define T1_FIELD_FIXED_ARRAY2( _ftype, _fname, _fmax )         \
      { t1_field_fixed,                                          \
        (FT_UInt)(char*)&T1_FIELD_REF(_ftype,_fname),            \
        sizeof(T1_FIELD_REF(_ftype,_fname)[0]),                  \
        _fmax,                                                   \
        0, 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     :: address in memory of the growheap's block. This
   *                 can change between two object adds, due to the use
   *                 of 'realloc'.
   *
   *    cursor    :: current top of the grow heap within its block
   *
   *    capacity  :: current size of the heap block. Increments by 1 Kb
   *
   *    init      :: boolean. set when the table has been initialized
   *                 (the table user should set this field)
   *
   *    max_elems :: maximum number of elements in table
   *    num_elems :: current number of elements in table
   *
   *    elements  :: table of element addresses within the block
   *    lengths   :: table of element sizes within the block
   *
   *    memory    :: memory 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_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;
  
  
  /*************************************************************************
   *
   * <Struct> T1_Parser
   *
   * <Description>
   *    A T1_Parser is an object used to parse a Type 1 fonts very
   *    quickly.
   *
   * <Fields>
   *    stream        :: current input stream
   *    memory        :: current memory object
   *
   *    base_dict     :: pointer to top-level dictionary
   *    base_len      :: length in bytes of top dict
   *
   *    private_dict  :: pointer to private dictionary
   *    private_len   :: length in bytes of private dict
   *
   *    in_pfb        :: boolean. Indicates that we're in a .pfb file
   *    in_memory     :: boolean. Indicates a memory-based stream
   *    single_block  :: boolean. Indicates that the private dict
   *                     is stored in lieu of the base dict
   *
   *    cursor        :: current parser cursor
   *    limit         :: current parser limit (first byte after current
   *                     dictionary).
   *
   *    error         :: current parsing error
   */
    typedef struct T1_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;
  
    } 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 );
  
  #if 0
    LOCAL_DEF
    void  T1_Done_Table( T1_Table*  table );
  #endif
  
    LOCAL_DEF
    void  T1_Release_Table( T1_Table*  table );
  
    LOCAL_DEF
    FT_Long  T1_ToInt  ( T1_Parser*  parser );
  
    LOCAL_DEF
    FT_Long  T1_ToFixed( T1_Parser*  parser, FT_Int  power_ten );
  
    LOCAL_DEF
    FT_Int  T1_ToCoordArray( T1_Parser* parser,
                             FT_Int     max_coords,
                             FT_Short*  coords );
  
    LOCAL_DEF
    FT_Int  T1_ToFixedArray( T1_Parser* parser,
                             FT_Int     max_values,
                             FT_Fixed*  values,
                             FT_Int     power_ten );
  
  #if 0
    LOCAL_DEF
    FT_String*  T1_ToString( T1_Parser* parser );
  
    LOCAL_DEF
    FT_Bool   T1_ToBool( T1_Parser* parser );
  #endif
  
  
  
  
  
  
    LOCAL_DEF
    void      T1_Skip_Spaces( T1_Parser*  parser );
  
    LOCAL_DEF
    void      T1_ToToken( T1_Parser*    parser,
                          T1_Token_Rec* token );
  
    LOCAL_FUNC
    void  T1_ToTokenArray( T1_Parser*     parser,
                           T1_Token_Rec*  tokens,
                           FT_UInt        max_tokens,
                           FT_Int*        pnum_tokens );
  
    LOCAL_DEF
    FT_Error  T1_Load_Field( T1_Parser*           parser,
                             const T1_Field_Rec*  field,
                             void**               objects,
                             FT_UInt              max_objects,
                             FT_ULong*            pflags );
  
    LOCAL_DEF
    FT_Error  T1_Load_Field_Table( T1_Parser*           parser,
                                   const T1_Field_Rec*  field,
                                   void**               objects,
                                   FT_UInt              max_objects,
                                   FT_ULong*            pflags );
  
  
    LOCAL_DEF
    FT_Error  T1_New_Parser( T1_Parser*  parser,
                             FT_Stream   stream,
                             FT_Memory   memory );
  
    LOCAL_DEF
    FT_Error  T1_Get_Private_Dict( T1_Parser*  parser );
  
    LOCAL_DEF
    void  T1_Decrypt( FT_Byte*   buffer,
                      FT_Int     length,
                      FT_UShort  seed );
  
    LOCAL_DEF
    void  T1_Done_Parser( T1_Parser*  parser );
  
  #ifdef __cplusplus
    }
  #endif
  
  #endif /* T1PARSE_H */
  
  
  /* END */
  
  

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