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
|
#include "mupdf/fitz.h"
#include "xps-imp.h"
#include <string.h>
static fz_xml *
xps_lookup_resource(fz_context *ctx, xps_document *doc, xps_resource *dict, char *name, char **urip)
{
xps_resource *head, *node;
for (head = dict; head; head = head->parent)
{
for (node = head; node; node = node->next)
{
if (!strcmp(node->name, name))
{
if (urip && head->base_uri)
*urip = head->base_uri;
return node->data;
}
}
}
return NULL;
}
static fz_xml *
xps_parse_resource_reference(fz_context *ctx, xps_document *doc, xps_resource *dict, char *att, char **urip)
{
char name[1024];
char *s;
if (strstr(att, "{StaticResource ") != att)
return NULL;
fz_strlcpy(name, att + 16, sizeof name);
s = strrchr(name, '}');
if (s)
*s = 0;
return xps_lookup_resource(ctx, doc, dict, name, urip);
}
void
xps_resolve_resource_reference(fz_context *ctx, xps_document *doc, xps_resource *dict,
char **attp, fz_xml **tagp, char **urip)
{
if (*attp)
{
fz_xml *rsrc = xps_parse_resource_reference(ctx, doc, dict, *attp, urip);
if (rsrc)
{
*attp = NULL;
*tagp = rsrc;
}
}
}
static xps_resource *
xps_parse_remote_resource_dictionary(fz_context *ctx, xps_document *doc, char *base_uri, char *source_att)
{
char part_name[1024];
char part_uri[1024];
xps_part *part;
xps_resource *dict = NULL;
fz_xml_doc *xml = NULL;
char *s;
fz_var(xml);
/* External resource dictionaries MUST NOT reference other resource dictionaries */
xps_resolve_url(ctx, doc, part_name, base_uri, source_att, sizeof part_name);
part = xps_read_part(ctx, doc, part_name);
fz_try(ctx)
{
xml = fz_parse_xml(ctx, part->data, 0, 0);
if (!fz_xml_is_tag(fz_xml_root(xml), "ResourceDictionary"))
fz_throw(ctx, FZ_ERROR_GENERIC, "expected ResourceDictionary element");
fz_strlcpy(part_uri, part_name, sizeof part_uri);
s = strrchr(part_uri, '/');
if (s)
s[1] = 0;
dict = xps_parse_resource_dictionary(ctx, doc, part_uri, fz_xml_root(xml));
if (dict)
{
dict->base_xml = xml; /* pass on ownership */
xml = NULL;
}
}
fz_always(ctx)
{
xps_drop_part(ctx, doc, part);
fz_drop_xml(ctx, xml);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
return dict;
}
xps_resource *
xps_parse_resource_dictionary(fz_context *ctx, xps_document *doc, char *base_uri, fz_xml *root)
{
xps_resource *head;
xps_resource *entry;
fz_xml *node;
char *source;
char *key;
source = fz_xml_att(root, "Source");
if (source)
return xps_parse_remote_resource_dictionary(ctx, doc, base_uri, source);
head = NULL;
for (node = fz_xml_down(root); node; node = fz_xml_next(node))
{
key = fz_xml_att(node, "x:Key");
if (key)
{
entry = fz_malloc_struct(ctx, xps_resource);
entry->name = key;
entry->base_uri = NULL;
entry->base_xml = NULL;
entry->data = node;
entry->next = head;
entry->parent = NULL;
head = entry;
}
}
if (head)
{
fz_try(ctx)
head->base_uri = fz_strdup(ctx, base_uri);
fz_catch(ctx)
{
fz_free(ctx, entry);
fz_rethrow(ctx);
}
}
return head;
}
void
xps_drop_resource_dictionary(fz_context *ctx, xps_document *doc, xps_resource *dict)
{
xps_resource *next;
while (dict)
{
next = dict->next;
fz_drop_xml(ctx, dict->base_xml);
fz_free(ctx, dict->base_uri);
fz_free(ctx, dict);
dict = next;
}
}
|
