151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
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/***
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**
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** Module: Encoding
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**
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** Description:
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** This is a module of the T1 to TT font converter. The module
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** contains interface functions for the global encoding table,
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** i.e. this is an abstract data type.
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**
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** Author: Michael Jansson
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**
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** Created: 6/13/93
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**
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***/
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#ifndef _ARGS
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# define IN const
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# define OUT
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# define INOUT
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# define _ARGS(arg) arg
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#endif
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#define ENC_UNICODE (USHORT)0 /* Unicode */
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#define ENC_MSWINDOWS (USHORT)1 /* Microsoft Windows UGL sub-set encoding. */
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#define ENC_STANDARD (USHORT)2 /* Postscript Standard Encoding */
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#define ENC_MACCODES (USHORT)3 /* Mac encoding. */
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#define ENC_MAXCODES (USHORT)4
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#define NOTDEFCODE (USHORT)0xffff /* 0xfffff is not a vaild code point so use
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it for the .notdef character. */
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#define NOTDEFINIT 0xffffffffL /* Used to init encoding arrays. */
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#define NOTDEFGLYPH (USHORT)0 /* Glyph zero must be the notdef glyph. */
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#define NULLGLYPH (USHORT)1 /* Glyph one must be the null glyph. */
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/***
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** Function: LookupNotDef
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**
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** Description:
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** look up a the .notdef character
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***/
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const struct encoding *LookupNotDef _ARGS((void));
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/***
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** Function: LookupPSName
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**
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** Description:
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** Do a binary search for a postscript name, and return
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** a handle that can be used to look up a the character
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** code for a specific encoding schema.
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***/
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struct encoding *LookupPSName _ARGS((IN struct encoding *table,
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INOUT USHORT size,
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IN char *name));
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/***
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** Function: LookupCharName
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**
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** Description:
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** look up a the character name for a
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** specific encoding scheme.
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***/
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const char *LookupCharName _ARGS((IN struct encoding *enc));
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/***
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** Function: LookupCharCode
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**
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** Description:
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** look up a the character code for a
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** specific encoding scheme.
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***/
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USHORT LookupCharCode _ARGS((IN struct encoding *enc,
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IN USHORT type));
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/***
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** Function: DecodeChar
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**
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** Description:
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** look up an encoding record for a character code in some
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** known encoding.
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***/
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const struct encoding *DecodeChar _ARGS((IN struct encoding *table,
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IN USHORT size,
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IN USHORT type,
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IN USHORT code));
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/***
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** Function: AllocEncodingTable
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**
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** Description:
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** Create a new encoding ADT.
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***/
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struct encoding *AllocEncodingTable _ARGS((IN USHORT num));
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/***
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** Function: SetEncodingEntry
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**
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** Description:
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** Set the mapping from a glyph name to character
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** codes for various platforms.
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***/
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void SetEncodingEntry _ARGS((INOUT struct encoding *,
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IN USHORT entry,
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IN char *name,
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IN USHORT max,
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IN USHORT *codes));
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/***
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** Function: RehashEncodingTable
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**
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** Description:
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** Prepare an encoding ADT so that entries can be
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** located in it.
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***/
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void RehashEncodingTable _ARGS((INOUT struct encoding *,
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IN USHORT num));
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/***
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** Function: FreeEncoding
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**
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** Description:
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** Deallocate memory associated to the encoding array.
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***/
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void FreeEncoding _ARGS((INOUT struct encoding *,
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IN USHORT num));
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/***
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** Function: LookupFirstEnc
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**
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** Description:
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** Locate the first encoding for a given glyph.
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***/
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const struct encoding *LookupFirstEnc(const struct encoding *encRoot,
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const int encSize,
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const struct encoding *encItem);
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/***
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** Function: LookupNextEnc
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**
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** Description:
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** Locate the first encoding for a given glyph.
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***/
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const struct encoding *LookupNextEnc(const struct encoding *encRoot,
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const int encSize,
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const struct encoding *encItem);
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