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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
/* Copyright (C) 2001-2023 Artifex Software, Inc.
All Rights Reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
Refer to licensing information at http://www.artifex.com or contact
Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
CA 94129, USA, for further information.
*/
/* XPS interpreter - resource functions */
#include "ghostxps.h"
static xps_item_t *
xps_find_resource(xps_context_t *ctx, xps_resource_t *dict, char *name, char **urip)
{
xps_resource_t *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 xps_item_t *
xps_parse_resource_reference(xps_context_t *ctx, xps_resource_t *dict, char *att, char **urip)
{
char name[1024];
char *s;
if (strstr(att, "{StaticResource ") != att)
return NULL;
gs_strlcpy(name, att + 16, sizeof name);
s = strrchr(name, '}');
if (s)
*s = 0;
return xps_find_resource(ctx, dict, name, urip);
}
void
xps_resolve_resource_reference(xps_context_t *ctx, xps_resource_t *dict,
char **attp, xps_item_t **tagp, char **urip)
{
if (*attp)
{
xps_item_t *rsrc = xps_parse_resource_reference(ctx, dict, *attp, urip);
if (rsrc)
{
*attp = NULL;
*tagp = rsrc;
}
}
}
static int
xps_parse_remote_resource_dictionary(xps_context_t *ctx, xps_resource_t **dictp, char *base_uri, char *source_att)
{
char part_name[1024];
char part_uri[1024];
xps_resource_t *dict = *dictp;
xps_part_t *part;
xps_item_t *xml;
char *s;
int code;
/* External resource dictionaries MUST NOT reference other resource dictionaries */
xps_absolute_path(part_name, base_uri, source_att, sizeof part_name);
part = xps_read_part(ctx, part_name);
if (!part)
{
return gs_throw1(-1, "cannot find remote resource part '%s'", part_name);
}
xml = xps_parse_xml(ctx, part->data, part->size);
if (!xml)
{
xps_free_part(ctx, part);
return gs_rethrow(-1, "cannot parse xml");
}
if (strcmp(xps_tag(xml), "ResourceDictionary"))
{
xps_free_item(ctx, xml);
xps_free_part(ctx, part);
return gs_throw1(-1, "expected ResourceDictionary element (found %s)", xps_tag(xml));
}
gs_strlcpy(part_uri, part_name, sizeof part_uri);
s = strrchr(part_uri, '/');
if (s)
s[1] = 0;
code = xps_parse_resource_dictionary(ctx, &dict, part_uri, xml);
if (code)
{
xps_free_item(ctx, xml);
xps_free_part(ctx, part);
return gs_rethrow1(code, "cannot parse remote resource dictionary: %s", part_uri);
}
if (dict != NULL)
dict->base_xml = xml; /* pass on ownership */
else
xps_free_item(ctx, xml);
xps_free_part(ctx, part);
*dictp = dict;
return gs_okay;
}
int
xps_parse_resource_dictionary(xps_context_t *ctx, xps_resource_t **dictp, char *base_uri, xps_item_t *root)
{
xps_resource_t *head;
xps_resource_t *entry;
xps_item_t *node;
char *source;
char *key;
int code;
if (*dictp)
{
gs_warn("multiple resource dictionaries; ignoring all but the first");
return gs_okay;
}
source = xps_att(root, "Source");
if (source)
{
code = xps_parse_remote_resource_dictionary(ctx, dictp, base_uri, source);
if (code)
return gs_rethrow(code, "cannot parse remote resource dictionary");
return gs_okay;
}
head = NULL;
for (node = xps_down(root); node; node = xps_next(node))
{
/* Usually "x:Key"; we have already processed and stripped namespace */
key = xps_att(node, "Key");
if (key)
{
entry = xps_alloc(ctx, sizeof(xps_resource_t));
if (!entry)
return gs_throw(gs_error_VMerror, "cannot allocate resource entry");
entry->name = key;
entry->base_uri = NULL;
entry->base_xml = NULL;
entry->data = node;
entry->next = head;
entry->parent = NULL;
head = entry;
}
}
if (head)
{
head->base_uri = xps_strdup(ctx, base_uri);
}
else
{
gs_warn("empty resource dictionary");
}
*dictp = head;
return gs_okay;
}
void
xps_free_resource_dictionary(xps_context_t *ctx, xps_resource_t *dict)
{
xps_resource_t *next;
while (dict)
{
next = dict->next;
if (dict->base_xml)
xps_free_item(ctx, dict->base_xml);
if (dict->base_uri)
xps_free(ctx, dict->base_uri);
xps_free(ctx, dict);
dict = next;
}
}
void
xps_debug_resource_dictionary(xps_context_t *ctx, xps_resource_t *dict)
{
while (dict)
{
if (dict->base_uri)
dmprintf1(ctx->memory, "URI = '%s'\n", dict->base_uri);
dmprintf2(ctx->memory, "KEY = '%s' VAL = "PRI_INTPTR"\n",
dict->name, (intptr_t)dict->data);
if (dict->parent)
{
dmputs(ctx->memory, "PARENT = {\n");
xps_debug_resource_dictionary(ctx, dict->parent);
dmputs(ctx->memory, "}\n");
}
dict = dict->next;
}
}
|
