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
| | /* Interface to libxml2.
Copyright (C) 2010 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#ifdef HAVE_LIBXML2
#include <setjmp.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/HTMLparser.h>
#include "lisp.h"
#include "buffer.h"
Lisp_Object make_dom (xmlNode *node)
{
if (node->type == XML_ELEMENT_NODE) {
Lisp_Object result = Fcons (intern (node->name), Qnil);
xmlNode *child;
xmlAttr *property;
/* First add the attributes. */
property = node->properties;
while (property != NULL) {
if (property->children &&
property->children->content) {
char *pname = xmalloc (strlen (property->name) + 2);
*pname = ':';
strcpy(pname + 1, property->name);
result = Fcons (Fcons (intern (pname),
build_string(property->children->content)),
result);
xfree (pname);
}
property = property->next;
}
/* Then add the children of the node. */
child = node->children;
while (child != NULL) {
result = Fcons (make_dom (child), result);
child = child->next;
}
return Fnreverse (result);
} else if (node->type == XML_TEXT_NODE) {
Lisp_Object content = Qnil;
if (node->content)
content = build_string (node->content);
return Fcons (intern (node->name), content);
} else
return Qnil;
}
static Lisp_Object
parse_buffer (Lisp_Object string, Lisp_Object base_url, int htmlp)
{
xmlDoc *doc;
xmlNode *node;
Lisp_Object result;
int ibeg, iend;
char *burl = "";
LIBXML_TEST_VERSION;
CHECK_STRING (string);
if (! NILP (base_url)) {
CHECK_STRING (base_url);
burl = SDATA (base_url);
}
if (htmlp)
doc = htmlReadMemory (SDATA (string), SBYTES (string), burl, "utf-8",
HTML_PARSE_RECOVER|HTML_PARSE_NONET|
HTML_PARSE_NOWARNING|HTML_PARSE_NOERROR);
else
doc = xmlReadMemory (SDATA (string), SBYTES (string), burl, "utf-8",
XML_PARSE_NONET|XML_PARSE_NOWARNING|
XML_PARSE_NOERROR);
if (doc != NULL) {
node = xmlDocGetRootElement (doc);
if (node != NULL)
result = make_dom (node);
xmlFreeDoc (doc);
xmlCleanupParser ();
}
return result;
}
DEFUN ("html-parse-string", Fhtml_parse_string, Shtml_parse_string,
0, 2, 0,
doc: /* Parse the string as an HTML document and return the parse tree.
If BASE-URL is non-nil, it will be used to expand relative URLs in
the HTML document.*/)
(Lisp_Object string, Lisp_Object base_url)
{
return parse_buffer (string, base_url, 1);
}
DEFUN ("xml-parse-string", Fxml_parse_string, Sxml_parse_string,
0, 2, 0,
doc: /* Parse the string as an XML document and return the parse tree.
If BASE-URL is non-nil, it will be used to expand relative URLs in
the XML document.*/)
(Lisp_Object string, Lisp_Object base_url)
{
return parse_buffer (string, base_url, 0);
}
\f
/***********************************************************************
Initialization
***********************************************************************/
void
syms_of_xml (void)
{
defsubr (&Shtml_parse_string);
defsubr (&Sxml_parse_string);
}
#endif /* HAVE_LIBXML2 */
|