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Similarly, to compute the total price of all the books one could write the following expression: final total = document.findAllElements('book') This prints Growing a Language and Learning XML. To extract the textual contents call text: titles
#Html xml file viewer code#
The above code returns a lazy iterator that recursively walks the XML document and yields all the element nodes with the requested tag name. findAllElements(String name) finds direct and indirect children of the current node with the provided tag name.įor example, to find all the nodes with the tag you could write: final titles = document.findAllElements('title').findElements(String name) finds direct children of the current node with the provided tag name.getElement(String name) finds the first direct child with the provided tag name, or null.There are convenience helpers to filter by element nodes only: childElements, siblingElements, precedingElements, descendantElements, followingElements, and ancestorElements.Īdditionally, there are helpers to find elements with a specific tag: where((node) => node is XmlText & !().isEmpty) Note that this is the only iterable that traverses nodes in reverse document order.įor example, the descendants iterator could be used to extract all textual contents from an XML tree: final textual = scendants ancestors returns an iterable over the ancestor nodes of the current node, that is the parent, the grandparent, and so on.following the nodes following the closing tag of the current node in document order.This includes the attributes of the current node, its children, the grandchildren, and so on. descendants returns an iterable over the descendants of the current node in document order.preceding returns an iterable over nodes preceding the opening tag of the current node in document order.
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siblings returns an iterable over the nodes at the same level that preceed and follow this node in document order.There are methods to traverse the XML tree along different axes: XmlDocumentFragment nodes are automatically expanded and copies of their children are added. Nodes that are already part of a tree are not automatically moved, you need to first create a copy as otherwise an XmlParentError is thrown. Trying to add a null value or an unsupported node type throws an XmlNodeTypeError error. children returns the direct children of the node.īoth lists are mutable and support all common List methods, such as add(XmlNode), addAll(Iterable), insert(int, XmlNode), and insertAll(int, Iterable).attributes returns the attributes of the node.Traversing and Querying #Īccessors allow accessing nodes in the XML tree: To read and write large files you might want to use the event-driven API instead. If your file is not UTF-8 encoded pass the correct encoding to readAsStringSync. To read XML from a file use the dart:io library: final file = new File('bookshelf.xml') įinal document = XmlDocument.parse(file.readAsStringSync()) Print(document.toXmlString(pretty: true, indent: '\t')) To write back the parsed XML document, simply call toString() or toXmlString(.) if you need more control: print(document.toString()) In case the document cannot be parsed, a XmlParserException is thrown. The resulting object is an instance of XmlDocument. To read XML input use the factory method XmlDocument.parse(String input): final bookshelfXml = '''įinal document = XmlDocument.parse(bookshelfXml) Due to historical reasons public classes have an Xml prefix, so conflicts with other code should be rare. If you import the library using a library prefix or only selectively show classes you might miss some of its functionality. ⚠️ This library makes extensive use of static extension methods. Import the library into your Dart code using: import 'package:xml/xml.dart' Tutorial # Installation #įollow the installation instructions on dart packages.
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Up-to-date class documentation is created with every release. General questions are best asked on StackOverflow.
#Html xml file viewer free#
Feel free to report issues or create a pull-request there. This library is open source, stable and well tested.
![html xml file viewer html xml file viewer](https://cdn.windowsreport.com/wp-content/uploads/2018/02/EditiX-XML-Editor-Best-software-to-view-read-XML-files-e1518883459103.jpg)
Dart XML is a lightweight library for parsing, traversing, querying, transforming and building XML documents.