diff options
author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-12-11 08:59:40 +0000 |
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committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-12-11 08:59:40 +0000 |
commit | 7661a3bec8209546aa8219aa361cdcfd3391c246 (patch) | |
tree | ee7aff68d00cfbc089b2622613ef592630bf1bd8 /sca-cpp/trunk/modules/js/htdocs/xmlutil.js | |
parent | 7c6f4f6ff1c8653ff6110490ea5f5d5de941175d (diff) |
Port XML, ATOM and SCDL parsing logic to Javascript. Implement minimal component rendering functions.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1044594 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-cpp/trunk/modules/js/htdocs/xmlutil.js')
-rw-r--r-- | sca-cpp/trunk/modules/js/htdocs/xmlutil.js | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/sca-cpp/trunk/modules/js/htdocs/xmlutil.js b/sca-cpp/trunk/modules/js/htdocs/xmlutil.js new file mode 100644 index 0000000000..121bf8692c --- /dev/null +++ b/sca-cpp/trunk/modules/js/htdocs/xmlutil.js @@ -0,0 +1,188 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +/** + * XML handling functions. + */ + +/** + * Convert a DOM node list to a regular list. + */ +function nodeList(n) { + var l = new Array(); + if (isNil(n)) + return l; + for (var i = 0; i < n.length; i++) + l[i] = n[i]; + return l; +} + +/** + * Return the child attributes of an element. + */ +function childAttributes(e) { + return filter(function(n) { return n.nodeType == 2; }, nodeList(e.attributes)); +} + +/** + * Return the child elements of an element. + */ +function childElements(e) { + return filter(function(n) { return n.nodeType == 1; }, nodeList(e.childNodes)); +} + +/** + * Return the child text nodes of an element. + */ +function childText(e) { + return filter(function(n) { return n.nodeType == 3; }, nodeList(e.childNodes)); +} + +/** + * Read a list of XML attributes. + */ +function readAttributes(a) { + if (isNil(a)) + return a; + return cons(mklist(attribute, "'" + car(a).nodeName, car(a).nodeValue), readAttributes(cdr(a))); +} + +/** + * Read an XML element. + */ +function readElement(e) { + var l = append(append(mklist(element, "'" + e.nodeName), readAttributes(childAttributes(e))), readElements(childElements(e))); + var t = childText(e); + if (isNil(t)) + return l; + return append(l, mklist(car(t).nodeValue)); +} + +/** + * Read a list of XML elements. + */ +function readElements(l) { + if (isNil(l)) + return l; + return cons(readElement(car(l)), readElements(cdr(l))); +} + +/** + * Parse a list of strings representing an XML document. + */ +function parseXML(l) { + var s = writeStrings(l); + if (window.DOMParser) { + var p =new DOMParser(); + return p.parseFromString(s, "text/xml"); + } + var doc; + try { + doc = new ActiveXObject("MSXML2.DOMDocument"); + } catch (e) { + doc = new ActiveXObject("Microsoft.XMLDOM"); + } + doc.async = 'false'; + doc.loadXML(s); + return doc; +} + +/** + * Read a list of values from an XML document. + */ +function readXMLDocument(doc) { + var root = nodeList(doc.childNodes); + if (isNil(root)) + return mklist(); + return mklist(readElement(car(root))); +} + +/** + * Read a list of values from a list of strings representing an XML document. + */ +function readXML(l) { + return readXMLDocument(parseXML(l)); +} + +/** + * Make an XML document. + */ +/** + * Return a list of strings representing an XML document. + */ +function writeXMLDocument(doc) { + if (typeof(XMLSerializer) != 'undefined') + return mklist(new XMLSerializer().serializeToString(doc)); + return mklist(doc.xml); +} + +/** + * Write a list of XML element and attribute tokens. + */ +function expandElementValues(n, l) { + if (isNil(l)) + return l; + return cons(cons(element, cons(n, car(l))), expandElementValues(n, cdr(l))); +} + +function writeList(l, node, doc) { + if (isNil(l)) + return node; + var token = car(l); + if (isTaggedList(token, attribute)) { + node.setAttribute(attributeName(token).substring(1), '' + attributeValue(token)); + } else if (isTaggedList(token, element)) { + if (elementHasValue(token)) { + var v = elementValue(token); + if (isList(v)) { + var e = expandElementValues(elementName(token), v); + writeList(e, node, doc); + } else { + var child = doc.createElement(elementName(token).substring(1)); + writeList(elementChildren(token), child, doc); + node.appendChild(child); + } + } else { + var child = doc.createElement(elementName(token).substring(1)); + writeList(elementChildren(token), child, doc); + node.appendChild(child); + } + } else + node.appendChild(doc.createTextNode('' + token)); + writeList(cdr(l), node, doc); + return node; +} + +/** + * Convert a list of values to a list of strings representing an XML document. + */ +function writeXML(l, xmlTag) { + function mkdoc() { + if (document.implementation && document.implementation.createDocument) + return document.implementation.createDocument('', '', null); + return new ActiveXObject("MSXML2.DOMDocument"); + } + + var doc = mkdoc(); + writeList(l, doc, doc); + if (!xmlTag) + return writeXMLDocument(doc); + return mklist('<?xml version="1.0" encoding="UTF-8"?>\n' + writeXMLDocument(doc) + '\n'); +} + |