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comparison mupdf-source/source/fitz/xml-imp.h @ 3:2c135c81b16c

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MERGE: upstream PyMuPDF 1.26.4 with MuPDF 1.26.7
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:44:09 +0200
parents b50eed0cc0ef
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0:6015a75abc2d 3:2c135c81b16c
1 // Copyright (C) 2022-2025 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 XML_IMP_H
24
25 #define XML_IMP_H
26
27 #include "mupdf/fitz.h"
28
29 /* These types are required for basic XML operation. */
30
31 struct attribute
32 {
33 char *value;
34 struct attribute *next;
35 char name[FZ_FLEXIBLE_ARRAY];
36 };
37
38 /**
39 We use a slightly grotty representation for an XML tree.
40
41 The topmost element of the tree is an fz_xml with up == NULL.
42 This signifies that we are a 'doc', rather than a 'node'.
43
44 We only ever get a 'doc' node at the root, and this contains
45 a reference count for the entire tree, together with the
46 fz_pool pointer used to allocate nodes.
47
48 All other structures are 'nodes'. If down is MAGIC_TEXT then
49 they are text nodes (with no children or attributes).
50 Otherwise, they are standard XML nodes with attributes
51 and children.
52 */
53
54 struct fz_xml
55 {
56 fz_xml *up, *down;
57 union
58 {
59 struct /* up != NULL */
60 {
61 fz_xml *prev, *next;
62 #ifdef FZ_XML_SEQ
63 int seq;
64 #endif
65 union
66 {
67 char text[1]; /* down == MAGIC_TEXT */
68 struct /* down != MAGIC_TEXT */
69 {
70 struct attribute *atts;
71 char name[FZ_FLEXIBLE_ARRAY];
72 } d;
73 } u;
74 } node;
75 struct /* up == NULL */
76 {
77 int refs;
78 fz_pool *pool;
79 } doc;
80 } u;
81 };
82
83 #define MAGIC_TEXT ((fz_xml *)1)
84
85 #define FZ_TEXT_ITEM(item) (item && item->down == MAGIC_TEXT)
86 #define FZ_DOCUMENT_ITEM(item) (item && item->up == NULL)
87
88 size_t xml_parse_entity(int *c, const char *a);
89
90 #endif