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Add support for numeric XML entities to XMLParser

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* Add support for decimal numeric entities to String::xml_unescape
* Add more error checks to String::xml_unescape
* Refactor XMLParser to use String::xml_unescape instead of an internal
implementation
This commit is contained in:
Henry Conklin 2021-02-11 09:33:55 -06:00
parent e5bb89cdd5
commit c6a911f037
6 changed files with 169 additions and 82 deletions
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66
core/io/xml_parser.cpp
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@ -36,63 +36,6 @@
VARIANT_ENUM_CAST(XMLParser::NodeType);
static bool _equalsn(const char32_t *str1, const char32_t *str2, int len) {
int i;
for (i = 0; i < len && str1[i] && str2[i]; ++i) {
if (str1[i] != str2[i]) {
return false;
}
}
// if one (or both) of the strings was smaller then they
// are only equal if they have the same length
return (i == len) || (str1[i] == 0 && str2[i] == 0);
}
String XMLParser::_replace_special_characters(const String &origstr) {
int pos = origstr.find("&");
int oldPos = 0;
if (pos == -1) {
return origstr;
}
String newstr;
while (pos != -1 && pos < origstr.length() - 2) {
// check if it is one of the special characters
int specialChar = -1;
for (int i = 0; i < (int)special_characters.size(); ++i) {
const char32_t *p = &origstr[pos] + 1;
if (_equalsn(&special_characters[i][1], p, special_characters[i].length() - 1)) {
specialChar = i;
break;
}
}
if (specialChar != -1) {
newstr += (origstr.substr(oldPos, pos - oldPos));
newstr += (special_characters[specialChar][0]);
pos += special_characters[specialChar].length();
} else {
newstr += (origstr.substr(oldPos, pos - oldPos + 1));
pos += 1;
}
// find next &
oldPos = pos;
pos = origstr.find("&", pos);
}
if (oldPos < origstr.length() - 1) {
newstr += (origstr.substr(oldPos, origstr.length() - oldPos));
}
return newstr;
}
static inline bool _is_white_space(char c) {
return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
}
@ -116,7 +59,7 @@ bool XMLParser::_set_text(char *start, char *end) {
// set current text to the parsed text, and replace xml special characters
String s = String::utf8(start, (int)(end - start));
node_name = _replace_special_characters(s);
node_name = s.xml_unescape();
// current XML node type is text
node_type = NODE_TEXT;
@ -292,7 +235,7 @@ void XMLParser::_parse_opening_xml_element() {
String s = String::utf8(attributeValueBegin,
(int)(attributeValueEnd - attributeValueBegin));
attr.value = _replace_special_characters(s);
attr.value = s.xml_unescape();
attributes.push_back(attr);
} else {
// tag is closed directly
@ -555,11 +498,6 @@ int XMLParser::get_current_line() const {
}
XMLParser::XMLParser() {
special_characters.push_back("&amp;");
special_characters.push_back("<lt;");
special_characters.push_back(">gt;");
special_characters.push_back("\"quot;");
special_characters.push_back("'apos;");
}
XMLParser::~XMLParser() {