lib/freetype/src/otlayout/otlparse.h

   1 #ifndef __OTL_PARSER_H__
   2 #define __OTL_PARSER_H__
   3
   4 #include "otlayout.h"
   5 #include "otlgdef.h"
   6 #include "otlgsub.h"
   7 #include "otlgpos.h"
   8
   9 OTL_BEGIN_HEADER
  10
  11   typedef struct OTL_ParserRec_*   OTL_Parser;
  12
  13   typedef struct OTL_StringRec_*   OTL_String;
  14
  15   typedef struct OTL_StringGlyphRec_
  16   {
  17     OTL_UInt  gindex;
  18     OTL_UInt  properties;
  19     OTL_UInt  lig_component;
  20     OTL_UInt  lig_id;
  21
  22   } OTL_StringGlyphRec, *OTL_StringGlyph;
  23
  24   typedef struct OTL_StringRec_
  25   {
  26     OTL_StringGlyph  glyphs;
  27     OTL_UInt         cursor;
  28     OTL_UInt         length;
  29     OTL_UInt         capacity;
  30
  31   } OTL_StringRec;
  32
  33   typedef struct OTL_ParserRec_
  34   {
  35     OTL_Bytes      tab_gdef;
  36     OTL_Bytes      tab_gsub;
  37     OTL_Bytes      tab_gpos;
  38     OTL_Bytes      tab_base;
  39     OTL_Bytes      tab_jstf;
  40
  41     OTL_Alternate  alternate;  /* external alternate handler */
  42
  43     OTL_UInt       context_len;
  44     OTL_UInt       markup_flags;
  45
  46     OTL_jmp_buf    jump_buffer;
  47     OTL_Memory     memory;
  48     OTL_Error      error;
  49
  50     OTL_StringRec  strings[2];
  51     OTL_String     str_in;
  52     OTL_String     str_out;
  53
  54   } OTL_ParserRec;
  55
  56   typedef enum
  57   {
  58     OTL_Err_Parser_Ok = 0,
  59     OTL_Err_Parser_InvalidData,
  60     OTL_Err_Parser_UncoveredGlyph
  61
  62   } OTL_ParseError;
  63
  64   OTL_LOCAL( OTL_UInt )
  65   otl_parser_get_gindex( OTL_Parser  parser );
  66
  67
  68   OTL_LOCAL( void )
  69   otl_parser_error( OTL_Parser  parser, OTL_ParserError  error );
  70
  71 #define  OTL_PARSER_UNCOVERED(x)  \
  72            otl_parser_error( x, OTL_Err_Parser_UncoveredGlyph )
  73
  74   OTL_LOCAL( void )
  75   otl_parser_check_property( OTL_Parser  parser,
  76                              OTL_UInt    gindex,
  77                              OTL_UInt    flags,
  78                              OTL_UInt   *aproperty );
  79
  80  /* copy current input glyph to output */
  81   OTL_LOCAL( void )
  82   otl_parser_copy_1( OTL_Parser  parser );
  83
  84  /* copy current input glyph to output, replacing its index */
  85   OTL_LOCAL( void )
  86   otl_parser_replace_1( OTL_Parser  parser,
  87                         OTL_UInt    gindex );
  88
  89  /* copy current input glyph to output, replacing it by several indices */
  90  /* read directly from the table                                        */
  91   OTL_LOCAL( void )
  92   otl_parser_replace_n( OTL_Parser  parser,
  93                         OTL_UInt    count,
  94                         OTL_Bytes   indices );
  95
  96 OTL_END_HEADER
  97
  98 #endif /* __OTL_PARSER_H__ */
  99