100 lines
3.0 KiB
Dart
100 lines
3.0 KiB
Dart
import "dart:collection";
|
|
|
|
import "package:xml/xml.dart";
|
|
|
|
class XMLNode {
|
|
final String tag;
|
|
Map<String, dynamic> attributes;
|
|
List<XMLNode> children;
|
|
bool closeTag;
|
|
String? text;
|
|
bool isDeclaration;
|
|
|
|
XMLNode({ required this.tag, this.attributes = const {}, List<XMLNode> children = const [], this.closeTag = true, this.text, this.isDeclaration = false }) : children = children;
|
|
XMLNode.xmlns({ required this.tag, required String xmlns, Map<String, String> attributes = const {}, this.children = const [], this.closeTag = true, this.text }) : attributes = { "xmlns": xmlns, ...attributes }, isDeclaration = false;
|
|
|
|
void addChild(XMLNode child) {
|
|
this.children.add(child);
|
|
}
|
|
|
|
String renderAttributes() {
|
|
return this.attributes.keys.map((key) {
|
|
final value = this.attributes[key]!;
|
|
assert(value is String || value is int);
|
|
if (value is String) {
|
|
return "$key='${value}'";
|
|
} else {
|
|
return "$key=${value.toString()}";
|
|
}
|
|
}).join(" ");
|
|
}
|
|
|
|
String toXml() {
|
|
final decl = this.isDeclaration ? "?" : "";
|
|
if (this.children.isEmpty) {
|
|
if (this.text != null && this.text!.isNotEmpty) {
|
|
final attrString = this.attributes.isEmpty ? "" : " " + this.renderAttributes();
|
|
return "<${this.tag}${attrString}>${this.text}</${this.tag}>";
|
|
} else {
|
|
return "<${decl}${this.tag} ${this.renderAttributes()}" + (this.closeTag ? " />" : "${decl}>");
|
|
}
|
|
} else {
|
|
final String childXml = this.children.map((child) => child.toXml()).join();
|
|
final xml = "<${decl}${this.tag} ${this.renderAttributes()}${decl}>${childXml}";
|
|
return xml + (this.closeTag ? "</${this.tag}>" : "");
|
|
}
|
|
}
|
|
|
|
XMLNode? firstTag(String tag, { String? xmlns}) {
|
|
try {
|
|
return this.children.firstWhere((node) {
|
|
if (xmlns != null) {
|
|
return node.tag == tag && node.attributes["xmlns"] == xmlns;
|
|
}
|
|
|
|
return node.tag == tag;
|
|
});
|
|
} catch(e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
List<XMLNode> findTags(String tag) {
|
|
return this.children.where((element) => element.tag == tag).toList();
|
|
}
|
|
|
|
String innerText() {
|
|
return this.text ?? "";
|
|
}
|
|
|
|
/// Just for testing purposes
|
|
static XMLNode fromString(String str) {
|
|
return XMLNode.fromXmlElement(
|
|
XmlDocument.parse(str).firstElementChild!
|
|
);
|
|
}
|
|
|
|
// Because this API is better ;)
|
|
static XMLNode fromXmlElement(XmlElement element) {
|
|
Map<String, String> attributes = Map();
|
|
|
|
element.attributes.forEach((attribute) {
|
|
attributes[attribute.name.qualified] = attribute.value;
|
|
});
|
|
|
|
if (element.childElements.length == 0) {
|
|
return XMLNode(
|
|
tag: element.name.qualified,
|
|
attributes: attributes,
|
|
text: element.innerText
|
|
);
|
|
} else {
|
|
return XMLNode(
|
|
tag: element.name.qualified,
|
|
attributes: attributes,
|
|
children: element.childElements.toList().map((e) => XMLNode.fromXmlElement(e)).toList()
|
|
);
|
|
}
|
|
}
|
|
}
|