| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> <head> |
| <title></title> |
| <script src="../DOM_js"></script> |
| <script> |
| |
| function ElementDeclaration(name) |
| { |
| this.name = name; |
| this.allowedChildren = new Object(); |
| } |
| |
| ElementDeclaration.prototype.addAllowedChild = function(name) |
| { |
| this.allowedChildren[name] = true; |
| } |
| |
| ElementDeclaration.prototype.removeAllowedChild = function(name) |
| { |
| delete this.allowedChildren[name]; |
| } |
| |
| ElementDeclaration.prototype.print = function() |
| { |
| for (var childName in this.allowedChildren) |
| println(this.name+" -> "+childName); |
| } |
| |
| ElementDeclaration.prototype.printAllowedChildren = function() |
| { |
| println(" \""+this.name+"\": {"); |
| for (var childName in this.allowedChildren) |
| println(" \""+childName+"\": true,"); |
| println(" },"); |
| } |
| |
| ElementDeclaration.prototype.setAllowedParents = function(allowedParents) |
| { |
| for (var childName in this.allowedChildren) { |
| if (allowedParents[childName] == null) |
| allowedParents[childName] = new Object(); |
| allowedParents[childName][this.name] = true; |
| } |
| } |
| |
| function debug(str) |
| { |
| console.log(str); |
| } |
| |
| function println(str) |
| { |
| var text = DOM_createTextNode(document,str+"\n"); |
| var output = document.getElementById("output"); |
| DOM_appendChild(output,text); |
| } |
| |
| function readFile(filename) |
| { |
| var req = new XMLHttpRequest(); |
| req.open("GET",filename,false); |
| req.send(); |
| return req.responseXML; |
| } |
| |
| function printTree(node,indent) |
| { |
| if (indent == null) |
| indent = ""; |
| println(indent+node); |
| for (var child = node.firstChild; child != null; child = child.nextSibling) |
| printTree(child,indent+" "); |
| } |
| |
| function parseOrGroup(decl,element) |
| { |
| for (var child = element.firstChild; child != null; child = child.nextSibling) { |
| if (child.nodeName == "element-name") { |
| decl.addAllowedChild(child.getAttribute("name")); |
| } |
| else if (child.nodeName == "pcdata") { |
| } |
| else if (child.nodeName == "or-group") { |
| parseOrGroup(decl,child); |
| } |
| else if (child.nodeType == Node.ELEMENT_NODE) { |
| println("ERROR: unexpected element: "+child.nodeName+" (parent "+element.nodeName+")"); |
| } |
| } |
| } |
| |
| function parseSequenceGroup(decl,element) |
| { |
| for (var child = element.firstChild; child != null; child = child.nextSibling) { |
| if (child.nodeName == "element-name") { |
| decl.addAllowedChild(child.getAttribute("name")); |
| } |
| else if (child.nodeName == "or-group") { |
| parseOrGroup(decl,child); |
| } |
| else if (child.nodeName == "pcdata") { |
| } |
| else if (child.nodeType == Node.ELEMENT_NODE) { |
| println("ERROR: unexpected element: "+child.nodeName+" (parent "+element.nodeName+")"); |
| } |
| } |
| } |
| |
| function parseContentModelExpanded(decl,element) |
| { |
| for (var child = element.firstChild; child != null; child = child.nextSibling) { |
| if (child.nodeName == "or-group") { |
| parseOrGroup(decl,child); |
| } |
| else if (child.nodeName == "and-group") { |
| parseOrGroup(decl,child); |
| } |
| else if (child.nodeName == "sequence-group") { |
| parseSequenceGroup(decl,child); |
| } |
| else if (child.nodeName == "empty") { |
| } |
| else if (child.nodeName == "cdata") { |
| } |
| else if (child.nodeType == Node.ELEMENT_NODE) { |
| println("ERROR: unexpected element: "+child.nodeName+" (parent "+element.nodeName+")"); |
| } |
| } |
| } |
| |
| function parseInclusions(decl,element) |
| { |
| for (var child = element.firstChild; child != null; child = child.nextSibling) { |
| if (child.nodeName == "or-group") { |
| parseOrGroup(decl,child); |
| } |
| else if (child.nodeType == Node.ELEMENT_NODE) { |
| println("ERROR: unexpected element: "+child.nodeName+" (parent "+element.nodeName+")"); |
| } |
| } |
| } |
| |
| function parseOrGroupExclusions(decl,element) |
| { |
| for (var child = element.firstChild; child != null; child = child.nextSibling) { |
| if (child.nodeName == "element-name") { |
| decl.removeAllowedChild(child.getAttribute("name")); |
| } |
| else if (child.nodeType == Node.ELEMENT_NODE) { |
| println("ERROR: unexpected element: "+child.nodeName+" (parent "+element.nodeName+")"); |
| } |
| } |
| } |
| |
| function parseSequenceGroupExclusions(decl,element) |
| { |
| parseOrGroupExclusions(decl,element); |
| } |
| |
| function parseExclusions(decl,element) |
| { |
| for (var child = element.firstChild; child != null; child = child.nextSibling) { |
| if (child.nodeName == "or-group") { |
| parseOrGroupExclusions(decl,child); |
| } |
| else if (child.nodeName == "sequence-group") { |
| parseSequenceGroupExclusions(decl,child); |
| } |
| else if (child.nodeType == Node.ELEMENT_NODE) { |
| println("ERROR: unexpected element: "+child.nodeName+" (parent "+element.nodeName+")"); |
| } |
| } |
| } |
| |
| function parseElement(element) |
| { |
| var decl = new ElementDeclaration(element.getAttribute("name")); |
| |
| for (var child = element.firstChild; child != null; child = child.nextSibling) { |
| if (child.nodeName == "content-model-expanded") { |
| parseContentModelExpanded(decl,child); |
| } |
| else if (child.nodeName == "inclusions") { |
| parseInclusions(decl,child); |
| } |
| else if (child.nodeName == "exclusions") { |
| parseExclusions(decl,child); |
| } |
| else if (child.nodeName == "content-model") { |
| } |
| else if (child.nodeType == Node.ELEMENT_NODE) { |
| println("ERROR: unexpected element: "+child.nodeName+" (parent "+element.nodeName+")"); |
| } |
| } |
| |
| // decl.println(); |
| return decl; |
| } |
| |
| function loaded() |
| { |
| var dtd = readFile("html4.xml"); |
| // printTree(dtd); |
| |
| var decls = new Array(); |
| for (var node = dtd.documentElement.firstChild; node != null; node = node.nextSibling) { |
| if (node.nodeName == "element") { |
| decls.push(parseElement(node)); |
| } |
| } |
| |
| println("// Automatically generated from HTML 4.01 dtd using dtdparse and gen_dtd_data.html"); |
| println("// See http://nwalsh.com/perl/dtdparse/"); |
| println(""); |
| |
| println("var ALLOWED_CHILDREN = {"); |
| for (var i = 0; i < decls.length; i++) { |
| decls[i].printAllowedChildren(); |
| } |
| println("};"); |
| |
| println(""); |
| |
| var allowedParents = new Object(); |
| for (var i = 0; i < decls.length; i++) { |
| decls[i].setAllowedParents(allowedParents); |
| } |
| |
| println("var ALLOWED_PARENTS = {"); |
| for (var childName in allowedParents) { |
| println(" \""+childName+"\": {"); |
| for (var parentName in allowedParents[childName]) { |
| println(" \""+parentName+"\": true,"); |
| } |
| println(" },"); |
| } |
| println("};"); |
| |
| } |
| </script> |
| </head> |
| |
| <body onload="loaded()"> |
| <pre id="output"> |
| </pre> |
| </body> |
| </html> |
