1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* $Header: /home/cvsroot/dvipdfmx/src/pdfencoding.h,v 1.3 2005/06/08 11:18:37 hirata Exp $
This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
Copyright (C) 2002 by Jin-Hwan Cho and Shunsaku Hirata,
the dvipdfmx project team <dvipdfmx@project.ktug.or.kr>
Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _PDFENCODING_H_
#define _PDFENCODING_H_
#include "pdfobj.h"
extern void pdf_encoding_set_verbose (void);
extern void pdf_init_encodings (void);
extern void pdf_close_encodings (void);
/* enc_name here is .enc file name or the name of predefined
* encodings.
*/
extern int pdf_encoding_findresource (const char *enc_name);
/* Returns indirect reference to Encoding resource.
*/
extern pdf_obj *pdf_get_encoding_reference (int enc_id);
extern int pdf_encoding_is_ASL_charset (int enc_id);
extern int pdf_encoding_is_predefined (int enc_id);
/* WARNING:
* Pointer(s) may change after another encoding is loaded.
*/
extern char *pdf_encoding_get_name (int enc_id);
extern char **pdf_encoding_get_encoding (int enc_id);
/*
* The last argument "is_used" is 256 char array, value 0
* indicates glyph in that slot is not used in the document
* (at least for that font). We need this to handle the
* situation that the encoding contains, e.g., 30 rarely
* used glyphs without Unicode mapping and 200+ glyphs with
* Unicode mapping.
* pdf_create_ToUnicode_CMap() returns stream object but not
* reference. This need to be renamed to other name like
* pdf_create_ToUnicode_stream().
*/
extern pdf_obj *pdf_create_ToUnicode_CMap (const char *enc_name,
char **enc_vec, char *is_used);
/* Add /ToUnicode entry with indirect reference to ToUnicode stream
* to font dictionary "fontdict". This creates an empty stream object
* if it has not already created. Generation of actual ToUnicode CMap
* data is delayed until pdf_close_encodings(). This also check if
* glyphs can be converted to (a sequence of) Unicode and returns -1
* if more than 10% of glyphs can't be converted. ToUnicode CMap is
* not attached in that case.
*/
extern int pdf_attach_ToUnicode_CMap (pdf_obj *fontdict,
int encoding_id, char *is_used);
/* Just load CMap identified with 'ident'. (parsed)
* PDF stream object (not reference) returned.
*/
extern pdf_obj *pdf_load_ToUnicode_stream (const char *ident);
#endif /* _PDFENCODINGS_H_ */
|