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381408e2 | 1 | /* Interface to libxml2. |
73b0cd50 | 2 | Copyright (C) 2010-2011 Free Software Foundation, Inc. |
381408e2 LMI |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software: you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation, either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <config.h> | |
20 | ||
21 | #ifdef HAVE_LIBXML2 | |
22 | ||
23 | #include <setjmp.h> | |
24 | #include <libxml/tree.h> | |
25 | #include <libxml/parser.h> | |
26 | #include <libxml/HTMLparser.h> | |
27 | ||
28 | #include "lisp.h" | |
29 | #include "buffer.h" | |
30 | ||
31 | Lisp_Object make_dom (xmlNode *node) | |
32 | { | |
4b9832a6 CY |
33 | if (node->type == XML_ELEMENT_NODE) |
34 | { | |
c45e5276 | 35 | Lisp_Object result = Fcons (intern ((char *) node->name), Qnil); |
4b9832a6 CY |
36 | xmlNode *child; |
37 | xmlAttr *property; | |
38 | Lisp_Object plist = Qnil; | |
39 | ||
40 | /* First add the attributes. */ | |
41 | property = node->properties; | |
42 | while (property != NULL) | |
43 | { | |
44 | if (property->children && | |
45 | property->children->content) | |
46 | { | |
c45e5276 PE |
47 | char *content = (char *) property->children->content; |
48 | plist = Fcons (Fcons (intern ((char *) property->name), | |
49 | build_string (content)), | |
4b9832a6 CY |
50 | plist); |
51 | } | |
52 | property = property->next; | |
53 | } | |
54 | result = Fcons (Fnreverse (plist), result); | |
55 | ||
56 | /* Then add the children of the node. */ | |
57 | child = node->children; | |
58 | while (child != NULL) | |
59 | { | |
60 | result = Fcons (make_dom (child), result); | |
61 | child = child->next; | |
62 | } | |
63 | ||
64 | return Fnreverse (result); | |
381408e2 | 65 | } |
3c2317e8 | 66 | else if (node->type == XML_TEXT_NODE || node->type == XML_CDATA_SECTION_NODE) |
4b9832a6 CY |
67 | { |
68 | if (node->content) | |
c45e5276 | 69 | return build_string ((char *) node->content); |
4b9832a6 CY |
70 | else |
71 | return Qnil; | |
381408e2 | 72 | } |
4b9832a6 | 73 | else |
381408e2 LMI |
74 | return Qnil; |
75 | } | |
76 | ||
77 | static Lisp_Object | |
1b217849 | 78 | parse_region (Lisp_Object start, Lisp_Object end, Lisp_Object base_url, int htmlp) |
381408e2 LMI |
79 | { |
80 | xmlDoc *doc; | |
81 | xmlNode *node; | |
c97c655f | 82 | Lisp_Object result = Qnil; |
55e572ef | 83 | const char *burl = ""; |
1b217849 LMI |
84 | EMACS_INT bytes; |
85 | EMACS_INT istart, iend; | |
8b620f11 | 86 | |
381408e2 | 87 | LIBXML_TEST_VERSION; |
8b620f11 | 88 | |
1b217849 | 89 | validate_region (&start, &end); |
20a5e996 | 90 | |
1b217849 LMI |
91 | istart = XINT (start); |
92 | iend = XINT (end); | |
93 | ||
94 | if (istart < GPT && GPT < iend) | |
95 | move_gap (iend); | |
381408e2 | 96 | |
4b9832a6 CY |
97 | if (! NILP (base_url)) |
98 | { | |
99 | CHECK_STRING (base_url); | |
42a5b22f | 100 | burl = SSDATA (base_url); |
4b9832a6 | 101 | } |
8b620f11 | 102 | |
1b217849 | 103 | bytes = CHAR_TO_BYTE (iend) - CHAR_TO_BYTE (istart); |
20a5e996 | 104 | |
1b217849 | 105 | if (htmlp) |
c45e5276 | 106 | doc = htmlReadMemory ((char *) BYTE_POS_ADDR (CHAR_TO_BYTE (istart)), |
1b217849 LMI |
107 | bytes, burl, "utf-8", |
108 | HTML_PARSE_RECOVER|HTML_PARSE_NONET| | |
3c2317e8 LMI |
109 | HTML_PARSE_NOWARNING|HTML_PARSE_NOERROR| |
110 | HTML_PARSE_NOBLANKS); | |
1b217849 | 111 | else |
c45e5276 | 112 | doc = xmlReadMemory ((char *) BYTE_POS_ADDR (CHAR_TO_BYTE (istart)), |
1b217849 LMI |
113 | bytes, burl, "utf-8", |
114 | XML_PARSE_NONET|XML_PARSE_NOWARNING| | |
115 | XML_PARSE_NOERROR); | |
4b9832a6 CY |
116 | |
117 | if (doc != NULL) | |
118 | { | |
119 | node = xmlDocGetRootElement (doc); | |
120 | if (node != NULL) | |
121 | result = make_dom (node); | |
122 | xmlFreeDoc (doc); | |
123 | xmlCleanupParser (); | |
124 | } | |
8b620f11 | 125 | |
381408e2 LMI |
126 | return result; |
127 | } | |
128 | ||
1b217849 LMI |
129 | DEFUN ("libxml-parse-html-region", Flibxml_parse_html_region, |
130 | Slibxml_parse_html_region, | |
131 | 2, 3, 0, | |
132 | doc: /* Parse the region as an HTML document and return the parse tree. | |
4b9832a6 | 133 | If BASE-URL is non-nil, it is used to expand relative URLs. */) |
1b217849 | 134 | (Lisp_Object start, Lisp_Object end, Lisp_Object base_url) |
381408e2 | 135 | { |
1b217849 | 136 | return parse_region (start, end, base_url, 1); |
381408e2 LMI |
137 | } |
138 | ||
1b217849 LMI |
139 | DEFUN ("libxml-parse-xml-region", Flibxml_parse_xml_region, |
140 | Slibxml_parse_xml_region, | |
141 | 2, 3, 0, | |
142 | doc: /* Parse the region as an XML document and return the parse tree. | |
4b9832a6 | 143 | If BASE-URL is non-nil, it is used to expand relative URLs. */) |
1b217849 | 144 | (Lisp_Object start, Lisp_Object end, Lisp_Object base_url) |
381408e2 | 145 | { |
1b217849 | 146 | return parse_region (start, end, base_url, 0); |
381408e2 LMI |
147 | } |
148 | ||
149 | \f | |
150 | /*********************************************************************** | |
151 | Initialization | |
152 | ***********************************************************************/ | |
153 | void | |
154 | syms_of_xml (void) | |
155 | { | |
1b217849 LMI |
156 | defsubr (&Slibxml_parse_html_region); |
157 | defsubr (&Slibxml_parse_xml_region); | |
381408e2 LMI |
158 | } |
159 | ||
160 | #endif /* HAVE_LIBXML2 */ |