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comparison mupdf-source/source/xps/xps-zip.c @ 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) 2004-2024 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 #include "mupdf/fitz.h"
24 #include "xps-imp.h"
25
26 #include <string.h>
27
28 static void xps_init_document(fz_context *ctx, xps_document *doc);
29
30 static xps_part *
31 xps_new_part(fz_context *ctx, xps_document *doc, char *name, fz_buffer *data)
32 {
33 xps_part *part = NULL;
34
35 fz_var(part);
36
37 fz_try(ctx)
38 {
39 part = fz_malloc_struct(ctx, xps_part);
40 part->name = fz_strdup(ctx, name);
41 part->data = data; /* take ownership of buffer */
42 }
43 fz_catch(ctx)
44 {
45 fz_drop_buffer(ctx, data);
46 fz_free(ctx, part);
47 fz_rethrow(ctx);
48 }
49
50 return part;
51 }
52
53 void
54 xps_drop_part(fz_context *ctx, xps_document *doc, xps_part *part)
55 {
56 fz_free(ctx, part->name);
57 fz_drop_buffer(ctx, part->data);
58 fz_free(ctx, part);
59 }
60
61 xps_part *
62 xps_read_part(fz_context *ctx, xps_document *doc, char *partname)
63 {
64 fz_archive *zip = doc->zip;
65 fz_buffer *buf = NULL;
66 fz_buffer *tmp = NULL;
67 char path[2048];
68 int count;
69 char *name;
70 int seen_last;
71
72 fz_var(buf);
73 fz_var(tmp);
74
75 name = partname;
76 if (name[0] == '/')
77 name ++;
78
79 fz_try(ctx)
80 {
81 /* All in one piece */
82 if (fz_has_archive_entry(ctx, zip, name))
83 {
84 buf = fz_read_archive_entry(ctx, zip, name);
85 }
86
87 /* Assemble all the pieces */
88 else
89 {
90 buf = fz_new_buffer(ctx, 512);
91 seen_last = 0;
92 for (count = 0; !seen_last; ++count)
93 {
94 fz_snprintf(path, sizeof path, "%s/[%d].piece", name, count);
95 if (fz_has_archive_entry(ctx, zip, path))
96 {
97 tmp = fz_read_archive_entry(ctx, zip, path);
98 fz_append_buffer(ctx, buf, tmp);
99 fz_drop_buffer(ctx, tmp);
100 tmp = NULL;
101 }
102 else
103 {
104 fz_snprintf(path, sizeof path, "%s/[%d].last.piece", name, count);
105 if (fz_has_archive_entry(ctx, zip, path))
106 {
107 tmp = fz_read_archive_entry(ctx, zip, path);
108 fz_append_buffer(ctx, buf, tmp);
109 fz_drop_buffer(ctx, tmp);
110 tmp = NULL;
111 seen_last = 1;
112 }
113 else
114 fz_throw(ctx, FZ_ERROR_FORMAT, "cannot find all pieces for part '%s'", partname);
115 }
116 }
117 }
118
119 }
120 fz_catch(ctx)
121 {
122 fz_drop_buffer(ctx, tmp);
123 fz_drop_buffer(ctx, buf);
124 fz_rethrow(ctx);
125 }
126
127 return xps_new_part(ctx, doc, partname, buf);
128 }
129
130 int
131 xps_has_part(fz_context *ctx, xps_document *doc, char *name)
132 {
133 char buf[2048];
134 if (name[0] == '/')
135 name++;
136 if (fz_has_archive_entry(ctx, doc->zip, name))
137 return 1;
138 fz_snprintf(buf, sizeof buf, "%s/[0].piece", name);
139 if (fz_has_archive_entry(ctx, doc->zip, buf))
140 return 1;
141 fz_snprintf(buf, sizeof buf, "%s/[0].last.piece", name);
142 if (fz_has_archive_entry(ctx, doc->zip, buf))
143 return 1;
144 return 0;
145 }
146
147 fz_document *
148 xps_open_document_with_directory(fz_context *ctx, fz_archive *dir)
149 {
150 xps_document *doc;
151
152 doc = fz_malloc_struct(ctx, xps_document);
153 xps_init_document(ctx, doc);
154
155 fz_try(ctx)
156 {
157 doc->zip = fz_keep_archive(ctx, dir);
158 xps_read_page_list(ctx, doc);
159 }
160 fz_catch(ctx)
161 {
162 fz_drop_document(ctx, &doc->super);
163 fz_rethrow(ctx);
164 }
165
166 return (fz_document*)doc;
167 }
168
169 fz_document *
170 xps_open_document_with_stream(fz_context *ctx, fz_stream *file)
171 {
172 xps_document *doc;
173
174 doc = fz_malloc_struct(ctx, xps_document);
175 xps_init_document(ctx, doc);
176
177 fz_try(ctx)
178 {
179 doc->zip = fz_open_zip_archive_with_stream(ctx, file);
180 xps_read_page_list(ctx, doc);
181 }
182 fz_catch(ctx)
183 {
184 fz_drop_document(ctx, &doc->super);
185 fz_rethrow(ctx);
186 }
187
188 return (fz_document*)doc;
189 }
190
191 fz_document *
192 xps_open_document(fz_context *ctx, const char *filename)
193 {
194 fz_stream *file;
195 fz_document *doc = NULL;
196
197 if (fz_is_directory(ctx, filename))
198 {
199 fz_archive *dir = fz_open_directory(ctx, filename);
200
201 fz_try(ctx)
202 doc = xps_open_document_with_directory(ctx, dir);
203 fz_always(ctx)
204 fz_drop_archive(ctx, dir);
205 fz_catch(ctx)
206 fz_rethrow(ctx);
207
208 return doc;
209 }
210
211 file = fz_open_file(ctx, filename);
212
213 fz_try(ctx)
214 doc = xps_open_document_with_stream(ctx, file);
215 fz_always(ctx)
216 fz_drop_stream(ctx, file);
217 fz_catch(ctx)
218 fz_rethrow(ctx);
219
220 return (fz_document*)doc;
221 }
222
223 static void
224 xps_drop_document(fz_context *ctx, fz_document *doc_)
225 {
226 xps_document *doc = (xps_document*)doc_;
227 xps_font_cache *font, *next;
228
229 if (doc->zip)
230 fz_drop_archive(ctx, doc->zip);
231
232 font = doc->font_table;
233 while (font)
234 {
235 next = font->next;
236 fz_drop_font(ctx, font->font);
237 fz_free(ctx, font->name);
238 fz_free(ctx, font);
239 font = next;
240 }
241
242 xps_drop_page_list(ctx, doc);
243
244 fz_free(ctx, doc->start_part);
245 }
246
247 static int
248 xps_lookup_metadata(fz_context *ctx, fz_document *doc_, const char *key, char *buf, size_t size)
249 {
250 if (!strcmp(key, FZ_META_FORMAT))
251 return 1 + (int)fz_strlcpy(buf, "XPS", size);
252 return -1;
253 }
254
255 static void
256 xps_init_document(fz_context *ctx, xps_document *doc)
257 {
258 doc->super.refs = 1;
259 doc->super.drop_document = xps_drop_document;
260 doc->super.load_outline = xps_load_outline;
261 doc->super.resolve_link_dest = xps_lookup_link_target;
262 doc->super.count_pages = xps_count_pages;
263 doc->super.load_page = xps_load_page;
264 doc->super.lookup_metadata = xps_lookup_metadata;
265 }