xref: /php-src/ext/dom/text.c (revision 9d7e6090)
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_properties.h"
26 
27 /*
28 * class DOMText extends DOMCharacterData
29 *
30 * URL: https://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#ID-1312295772
31 * Since:
32 */
33 
34 /* {{{ */
PHP_METHOD(DOMText,__construct)35 PHP_METHOD(DOMText, __construct)
36 {
37 	xmlNodePtr nodep = NULL, oldnode = NULL;
38 	dom_object *intern;
39 	char *value = NULL;
40 	size_t value_len;
41 
42 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "|s", &value, &value_len) == FAILURE) {
43 		RETURN_THROWS();
44 	}
45 
46 	nodep = xmlNewText(BAD_CAST value);
47 
48 	if (!nodep) {
49 		php_dom_throw_error(INVALID_STATE_ERR, true);
50 		RETURN_THROWS();
51 	}
52 
53 	intern = Z_DOMOBJ_P(ZEND_THIS);
54 	oldnode = dom_object_get_node(intern);
55 	if (oldnode != NULL) {
56 		php_libxml_node_decrement_resource((php_libxml_node_object *)intern);
57 	}
58 	php_libxml_increment_node_ptr((php_libxml_node_object *)intern, nodep, (void *)intern);
59 }
60 /* }}} end DOMText::__construct */
61 
62 /* {{{ wholeText	string
63 readonly=yes
64 URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-Text3-wholeText
65 Since: DOM Level 3
66 */
dom_text_whole_text_read(dom_object * obj,zval * retval)67 zend_result dom_text_whole_text_read(dom_object *obj, zval *retval)
68 {
69 	DOM_PROP_NODE(xmlNodePtr, node, obj);
70 
71 	smart_str str = {0};
72 
73 	/* Find starting text node */
74 	while (node->prev && ((node->prev->type == XML_TEXT_NODE) || (node->prev->type == XML_CDATA_SECTION_NODE))) {
75 		node = node->prev;
76 	}
77 
78 	/* concatenate all adjacent text and cdata nodes */
79 	while (node && ((node->type == XML_TEXT_NODE) || (node->type == XML_CDATA_SECTION_NODE))) {
80 		if (node->content) {
81 			smart_str_appends(&str, (const char *) node->content);
82 		}
83 		node = node->next;
84 	}
85 
86 	ZVAL_STR(retval, smart_str_extract(&str));
87 
88 	return SUCCESS;
89 }
90 
91 /* }}} */
92 
93 /* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-38853C1D
94 Modern spec URL: https://dom.spec.whatwg.org/#dom-text-splittext
95 Since:
96 */
PHP_METHOD(DOMText,splitText)97 PHP_METHOD(DOMText, splitText)
98 {
99 	zval       *id;
100 	xmlChar    *first;
101 	xmlChar    *second;
102 	xmlNodePtr  node;
103 	xmlNodePtr  nnode;
104 	zend_long        offset;
105 	int         length;
106 	dom_object	*intern;
107 
108 	id = ZEND_THIS;
109 	if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &offset) == FAILURE) {
110 		RETURN_THROWS();
111 	}
112 	DOM_GET_OBJ(node, id, xmlNodePtr, intern);
113 
114 	if (offset < 0) {
115 		zend_argument_value_error(1, "must be greater than or equal to 0");
116 		RETURN_THROWS();
117 	}
118 
119 	const xmlChar *cur = php_dom_get_content_or_empty(node);
120 	length = xmlUTF8Strlen(cur);
121 
122 	if (ZEND_LONG_INT_OVFL(offset) || (int)offset > length) {
123 		if (php_dom_follow_spec_intern(intern)) {
124 			php_dom_throw_error(INDEX_SIZE_ERR, /* strict */ true);
125 		}
126 		RETURN_FALSE;
127 	}
128 
129 	first = xmlUTF8Strndup(cur, (int)offset);
130 	second = xmlUTF8Strsub(cur, (int)offset, (int)(length - offset));
131 
132 	xmlNodeSetContent(node, first);
133 	nnode = xmlNewDocText(node->doc, second);
134 
135 	xmlFree(first);
136 	xmlFree(second);
137 
138 	if (nnode == NULL) {
139 		php_dom_throw_error(INVALID_STATE_ERR, /* strict */ true);
140 		RETURN_THROWS();
141 	}
142 
143 	if (node->parent != NULL) {
144 		nnode->type = XML_ELEMENT_NODE;
145 		xmlAddNextSibling(node, nnode);
146 		nnode->type = XML_TEXT_NODE;
147 	}
148 
149 	php_dom_create_object(nnode, return_value, intern);
150 }
151 /* }}} end dom_text_split_text */
152 
153 /* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-Text3-isWhitespaceInElementContent
154 Since: DOM Level 3
155 */
PHP_METHOD(DOMText,isWhitespaceInElementContent)156 PHP_METHOD(DOMText, isWhitespaceInElementContent)
157 {
158 	zval       *id;
159 	xmlNodePtr  node;
160 	dom_object	*intern;
161 
162 	id = ZEND_THIS;
163 	if (zend_parse_parameters_none() == FAILURE) {
164 		RETURN_THROWS();
165 	}
166 	DOM_GET_OBJ(node, id, xmlNodePtr, intern);
167 
168 	if (xmlIsBlankNode(node)) {
169 		RETURN_TRUE;
170 	} else {
171 		RETURN_FALSE;
172 	}
173 }
174 /* }}} end dom_text_is_whitespace_in_element_content */
175 
176 #endif
177