xref: /php-src/ext/dom/text.c (revision 539d8d92)
1 /*
2    +----------------------------------------------------------------------+
3    | Copyright (c) The PHP Group                                          |
4    +----------------------------------------------------------------------+
5    | This source file is subject to version 3.01 of the PHP license,      |
6    | that is bundled with this package in the file LICENSE, and is        |
7    | available through the world-wide-web at the following url:           |
8    | https://www.php.net/license/3_01.txt                                 |
9    | If you did not receive a copy of the PHP license and are unable to   |
10    | obtain it through the world-wide-web, please send a note to          |
11    | license@php.net so we can mail you a copy immediately.               |
12    +----------------------------------------------------------------------+
13    | Authors: Christian Stocker <chregu@php.net>                          |
14    |          Rob Richards <rrichards@php.net>                            |
15    +----------------------------------------------------------------------+
16 */
17 
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
21 
22 #include "php.h"
23 #if defined(HAVE_LIBXML) && defined(HAVE_DOM)
24 #include "php_dom.h"
25 #include "dom_ce.h"
26 #include "dom_properties.h"
27 
28 /*
29 * class DOMText extends DOMCharacterData
30 *
31 * URL: https://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#ID-1312295772
32 * Since:
33 */
34 
35 /* {{{ */
PHP_METHOD(DOMText,__construct)36 PHP_METHOD(DOMText, __construct)
37 {
38 	xmlNodePtr nodep = NULL, oldnode = NULL;
39 	dom_object *intern;
40 	char *value = NULL;
41 	size_t value_len;
42 
43 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|s", &value, &value_len) == FAILURE) {
44 		RETURN_THROWS();
45 	}
46 
47 	nodep = xmlNewText(BAD_CAST value);
48 
49 	if (!nodep) {
50 		php_dom_throw_error(INVALID_STATE_ERR, true);
51 		RETURN_THROWS();
52 	}
53 
54 	intern = Z_DOMOBJ_P(ZEND_THIS);
55 	oldnode = dom_object_get_node(intern);
56 	if (oldnode != NULL) {
57 		php_libxml_node_decrement_resource((php_libxml_node_object *)intern);
58 	}
59 	php_libxml_increment_node_ptr((php_libxml_node_object *)intern, nodep, (void *)intern);
60 }
61 /* }}} end DOMText::__construct */
62 
63 /* {{{ wholeText	string
64 readonly=yes
65 URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-Text3-wholeText
66 Since: DOM Level 3
67 */
dom_text_whole_text_read(dom_object * obj,zval * retval)68 zend_result dom_text_whole_text_read(dom_object *obj, zval *retval)
69 {
70 	DOM_PROP_NODE(xmlNodePtr, node, obj);
71 
72 	xmlChar *wholetext = NULL;
73 
74 	/* Find starting text node */
75 	while (node->prev && ((node->prev->type == XML_TEXT_NODE) || (node->prev->type == XML_CDATA_SECTION_NODE))) {
76 		node = node->prev;
77 	}
78 
79 	/* concatenate all adjacent text and cdata nodes */
80 	while (node && ((node->type == XML_TEXT_NODE) || (node->type == XML_CDATA_SECTION_NODE))) {
81 		wholetext = xmlStrcat(wholetext, node->content);
82 		node = node->next;
83 	}
84 
85 	if (wholetext != NULL) {
86 		ZVAL_STRING(retval, (char *) wholetext);
87 		xmlFree(wholetext);
88 	} else {
89 		ZVAL_EMPTY_STRING(retval);
90 	}
91 
92 	return SUCCESS;
93 }
94 
95 /* }}} */
96 
97 /* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-38853C1D
98 Modern spec URL: https://dom.spec.whatwg.org/#dom-text-splittext
99 Since:
100 */
PHP_METHOD(DOMText,splitText)101 PHP_METHOD(DOMText, splitText)
102 {
103 	zval       *id;
104 	xmlChar    *cur;
105 	xmlChar    *first;
106 	xmlChar    *second;
107 	xmlNodePtr  node;
108 	xmlNodePtr  nnode;
109 	zend_long        offset;
110 	int         length;
111 	dom_object	*intern;
112 
113 	id = ZEND_THIS;
114 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &offset) == FAILURE) {
115 		RETURN_THROWS();
116 	}
117 	DOM_GET_OBJ(node, id, xmlNodePtr, intern);
118 
119 	if (offset < 0) {
120 		zend_argument_value_error(1, "must be greater than or equal to 0");
121 		RETURN_THROWS();
122 	}
123 
124 	cur = node->content;
125 	if (cur == NULL) {
126 		/* TODO: is this even possible? */
127 		cur = BAD_CAST "";
128 	}
129 	length = xmlUTF8Strlen(cur);
130 
131 	if (ZEND_LONG_INT_OVFL(offset) || (int)offset > length) {
132 		if (php_dom_follow_spec_intern(intern)) {
133 			php_dom_throw_error(INDEX_SIZE_ERR, /* strict */ true);
134 		}
135 		RETURN_FALSE;
136 	}
137 
138 	first = xmlUTF8Strndup(cur, (int)offset);
139 	second = xmlUTF8Strsub(cur, (int)offset, (int)(length - offset));
140 
141 	xmlNodeSetContent(node, first);
142 	nnode = xmlNewDocText(node->doc, second);
143 
144 	xmlFree(first);
145 	xmlFree(second);
146 
147 	if (nnode == NULL) {
148 		php_dom_throw_error(INVALID_STATE_ERR, /* strict */ true);
149 		RETURN_THROWS();
150 	}
151 
152 	if (node->parent != NULL) {
153 		nnode->type = XML_ELEMENT_NODE;
154 		xmlAddNextSibling(node, nnode);
155 		nnode->type = XML_TEXT_NODE;
156 	}
157 
158 	php_dom_create_object(nnode, return_value, intern);
159 }
160 /* }}} end dom_text_split_text */
161 
162 /* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-Text3-isWhitespaceInElementContent
163 Since: DOM Level 3
164 */
PHP_METHOD(DOMText,isWhitespaceInElementContent)165 PHP_METHOD(DOMText, isWhitespaceInElementContent)
166 {
167 	zval       *id;
168 	xmlNodePtr  node;
169 	dom_object	*intern;
170 
171 	id = ZEND_THIS;
172 	if (zend_parse_parameters_none() == FAILURE) {
173 		RETURN_THROWS();
174 	}
175 	DOM_GET_OBJ(node, id, xmlNodePtr, intern);
176 
177 	if (xmlIsBlankNode(node)) {
178 		RETURN_TRUE;
179 	} else {
180 		RETURN_FALSE;
181 	}
182 }
183 /* }}} end dom_text_is_whitespace_in_element_content */
184 
185 #endif
186