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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* TODO: insert short description here
*//*
* Authors: see git history
*
* Copyright (C) 2018 Authors
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <glibmm/convert.h>
#include <glibmm/miscutils.h>
#include <glibmm/uriutils.h>
#include <glibmm/utility.h>
#include "../document.h" /* Unfortunately there's a separate xml/document.h. */
#include "streq.h"
#include "io/dir-util.h"
#include "io/sys.h"
#include "object/sp-object.h"
#include "object/uri.h"
#include "xml/node.h"
#include "xml/rebase-hrefs.h"
using Inkscape::XML::AttributeRecord;
using Inkscape::XML::AttributeVector;
/**
* Determine if a href needs rebasing.
*/
static bool href_needs_rebasing(char const *href)
{
// RFC 3986 defines empty string relative URL as referring to the
// containing document, rather than referring to the base URI.
if (!href[0] || href[0] == '#') {
return false;
}
// skip document-local queries
if (href[0] == '?') {
return false;
}
// skip absolute-path and network-path references
if (href[0] == '/') {
return false;
}
// Don't change non-file URIs (like data or http)
auto scheme = Glib::make_unique_ptr_gfree(g_uri_parse_scheme(href));
return !scheme || streq(scheme.get(), "file");
}
AttributeVector
Inkscape::XML::rebase_href_attrs(gchar const *const old_abs_base,
gchar const *const new_abs_base,
const AttributeVector &attributes)
{
using Inkscape::Util::share_string;
auto ret = attributes; // copy
if (old_abs_base == new_abs_base) {
return ret;
}
static GQuark const href_key = g_quark_from_static_string("xlink:href");
static GQuark const absref_key = g_quark_from_static_string("sodipodi:absref");
auto const find_record = [&ret](GQuark const key) {
return find_if(ret.begin(), ret.end(), [key](auto const &attr) { return attr.key == key; });
};
auto href_it = find_record(href_key);
if (href_it == ret.end() || !href_needs_rebasing(href_it->value.pointer())) {
return ret;
}
auto uri = URI::from_href_and_basedir(href_it->value.pointer(), old_abs_base);
auto abs_href = uri.toNativeFilename();
auto absref_it = find_record(absref_key);
if (absref_it != ret.end()) {
if (g_file_test(abs_href.c_str(), G_FILE_TEST_EXISTS)) {
if (!streq(abs_href.c_str(), absref_it->value.pointer())) {
absref_it->value = share_string(abs_href.c_str());
}
} else if (g_file_test(absref_it->value.pointer(), G_FILE_TEST_EXISTS)) {
uri = URI::from_native_filename(absref_it->value.pointer());
}
}
std::string baseuri;
if (new_abs_base && new_abs_base[0]) {
baseuri = URI::from_dirname(new_abs_base).str();
}
auto new_href = uri.str(baseuri.c_str());
href_it->value = share_string(new_href.c_str());
return ret;
}
void Inkscape::XML::rebase_hrefs(SPDocument *const doc, gchar const *const new_base, bool const spns)
{
using Inkscape::URI;
std::string old_base_url_str = URI::from_dirname(doc->getDocumentBase()).str();
std::string new_base_url_str;
if (new_base) {
new_base_url_str = URI::from_dirname(new_base).str();
}
/* TODO: Should handle not just image but also:
*
* a, altGlyph, animElementAttrs, animate, animateColor, animateMotion, animateTransform,
* animation, audio, color-profile, cursor, definition-src, discard, feImage, filter,
* font-face-uri, foreignObject, glyphRef, handler, linearGradient, mpath, pattern,
* prefetch, radialGradient, script, set, textPath, tref, use, video
*
* (taken from the union of the xlink:href elements listed at
* http://www.w3.org/TR/SVG11/attindex.html and
* http://www.w3.org/TR/SVGMobile12/attributeTable.html).
*
* Also possibly some other attributes of type <URI> or <IRI> or list-thereof, or types like
* <paint> that can include an IRI/URI, and stylesheets and style attributes. (xlink:base is a
* special case. xlink:role and xlink:arcrole can be assumed to be already absolute, based on
* http://www.w3.org/TR/SVG11/struct.html#xlinkRefAttrs .)
*
* Note that it may not useful to set sodipodi:absref for anything other than image.
*
* Note also that Inkscape only supports fragment hrefs (href="#pattern257") for many of these
* cases. */
std::vector<SPObject *> images = doc->getResourceList("image");
for (auto image : images) {
Inkscape::XML::Node *ir = image->getRepr();
auto href_cstr = ir->attribute("xlink:href");
if (!href_cstr) {
continue;
}
if (!href_needs_rebasing(href_cstr)) {
continue;
}
// make absolute
URI url;
try {
url = URI(href_cstr, old_base_url_str.c_str());
} catch (...) {
continue;
}
// skip non-file URLs
if (!url.hasScheme("file")) {
continue;
}
// if path doesn't exist, use sodipodi:absref
if (!g_file_test(url.toNativeFilename().c_str(), G_FILE_TEST_EXISTS)) {
auto spabsref = ir->attribute("sodipodi:absref");
if (spabsref && g_file_test(spabsref, G_FILE_TEST_EXISTS)) {
url = URI::from_native_filename(spabsref);
}
} else if (spns) {
ir->setAttributeOrRemoveIfEmpty("sodipodi:absref", url.toNativeFilename());
}
if (!spns) {
ir->removeAttribute("sodipodi:absref");
}
auto href_str = url.str(new_base_url_str.c_str());
href_str = Inkscape::uri_to_iri(href_str.c_str());
ir->setAttribute("xlink:href", href_str);
}
doc->setDocumentBase(new_base);
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vi: set autoindent shiftwidth=4 tabstop=8 filetype=cpp expandtab softtabstop=4 fileencoding=utf-8 textwidth=99 :
|
