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comparison mupdf-source/include/mupdf/pdf/cmap.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 // Copyright (C) 2004-2025 Artifex Software, Inc.
2 //
3 // This file is part of MuPDF.
4 //
5 // MuPDF is free software: you can redistribute it and/or modify it under the
6 // terms of the GNU Affero General Public License as published by the Free
7 // Software Foundation, either version 3 of the License, or (at your option)
8 // any later version.
9 //
10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
13 // details.
14 //
15 // You should have received a copy of the GNU Affero General Public License
16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
17 //
18 // Alternative licensing terms are available from the licensor.
19 // For commercial licensing, see <https://www.artifex.com/> or contact
20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
21 // CA 94129, USA, for further information.
22
23 #ifndef MUPDF_PDF_CMAP_H
24 #define MUPDF_PDF_CMAP_H
25
26 #include "mupdf/fitz/store.h"
27 #include "mupdf/pdf/document.h"
28
29 #define PDF_MRANGE_CAP 32
30
31 typedef struct
32 {
33 unsigned short low, high, out;
34 } pdf_range;
35
36 typedef struct
37 {
38 unsigned int low, high, out;
39 } pdf_xrange;
40
41 typedef struct
42 {
43 unsigned int low, out;
44 } pdf_mrange;
45
46 typedef struct cmap_splay cmap_splay;
47
48 typedef struct pdf_cmap
49 {
50 fz_storable storable;
51 char cmap_name[32];
52
53 char usecmap_name[32];
54 struct pdf_cmap *usecmap;
55
56 int wmode;
57
58 int codespace_len;
59 struct
60 {
61 int n;
62 unsigned int low;
63 unsigned int high;
64 } codespace[40];
65
66 int rlen, rcap;
67 pdf_range *ranges;
68
69 int xlen, xcap;
70 pdf_xrange *xranges;
71
72 int mlen, mcap;
73 pdf_mrange *mranges;
74
75 int dlen, dcap;
76 int *dict;
77
78 int tlen, tcap, ttop;
79 cmap_splay *tree;
80 } pdf_cmap;
81
82 pdf_cmap *pdf_new_cmap(fz_context *ctx);
83 pdf_cmap *pdf_keep_cmap(fz_context *ctx, pdf_cmap *cmap);
84 void pdf_drop_cmap(fz_context *ctx, pdf_cmap *cmap);
85 void pdf_drop_cmap_imp(fz_context *ctx, fz_storable *cmap);
86 size_t pdf_cmap_size(fz_context *ctx, pdf_cmap *cmap);
87
88 int pdf_cmap_wmode(fz_context *ctx, pdf_cmap *cmap);
89 void pdf_set_cmap_wmode(fz_context *ctx, pdf_cmap *cmap, int wmode);
90 void pdf_set_usecmap(fz_context *ctx, pdf_cmap *cmap, pdf_cmap *usecmap);
91
92 /*
93 Add a codespacerange section.
94 These ranges are used by pdf_decode_cmap to decode
95 multi-byte encoded strings.
96 */
97 void pdf_add_codespace(fz_context *ctx, pdf_cmap *cmap, unsigned int low, unsigned int high, size_t n);
98
99 /*
100 Add a range of contiguous one-to-one mappings (i.e. 1..5 maps to 21..25)
101 */
102 void pdf_map_range_to_range(fz_context *ctx, pdf_cmap *cmap, unsigned int srclo, unsigned int srchi, int dstlo);
103
104 /*
105 Add a single one-to-many mapping.
106
107 len <= 256.
108 */
109 void pdf_map_one_to_many(fz_context *ctx, pdf_cmap *cmap, unsigned int one, int *many, size_t len);
110 void pdf_sort_cmap(fz_context *ctx, pdf_cmap *cmap);
111
112 /*
113 Lookup the mapping of a codepoint.
114 */
115 int pdf_lookup_cmap(pdf_cmap *cmap, unsigned int cpt);
116 int pdf_lookup_cmap_full(pdf_cmap *cmap, unsigned int cpt, int *out);
117
118 /*
119 Use the codespace ranges to extract a codepoint from a
120 multi-byte encoded string.
121 */
122 int pdf_decode_cmap(pdf_cmap *cmap, unsigned char *s, unsigned char *e, unsigned int *cpt);
123
124 /*
125 Create an Identity-* CMap (for both 1 and 2-byte encodings)
126 */
127 pdf_cmap *pdf_new_identity_cmap(fz_context *ctx, int wmode, int bytes);
128 pdf_cmap *pdf_load_cmap(fz_context *ctx, fz_stream *file);
129
130 /*
131 Load predefined CMap from system.
132 */
133 pdf_cmap *pdf_load_system_cmap(fz_context *ctx, const char *name);
134
135 /*
136 Load built-in CMap resource.
137 */
138 pdf_cmap *pdf_load_builtin_cmap(fz_context *ctx, const char *name);
139
140 /*
141 Load CMap stream in PDF file
142 */
143 pdf_cmap *pdf_load_embedded_cmap(fz_context *ctx, pdf_document *doc, pdf_obj *ref);
144
145 #endif