--- /dev/null
+/* This file defines an XML parser, with a few kludges to make it
+ * useable for HTML. autoSelfClosers defines a set of tag names that
+ * are expected to not have a closing tag, and doNotIndent specifies
+ * the tags inside of which no indentation should happen (see Config
+ * object). These can be disabled by passing the editor an object like
+ * {useHTMLKludges: false} as parserConfig option.
+ */
+
+var XMLParser = Editor.Parser = (function() {
+ var Kludges = {
+ autoSelfClosers: {"br": true, "img": true, "hr": true, "link": true, "input": true,
+ "meta": true, "col": true, "frame": true, "base": true, "area": true},
+ doNotIndent: {"pre": true, "!cdata": true}
+ };
+ var NoKludges = {autoSelfClosers: {}, doNotIndent: {"!cdata": true}};
+ var UseKludges = Kludges;
+ var alignCDATA = false;
+
+ // Simple stateful tokenizer for XML documents. Returns a
+ // MochiKit-style iterator, with a state property that contains a
+ // function encapsulating the current state. See tokenize.js.
+ var tokenizeXML = (function() {
+ function inText(source, setState) {
+ var ch = source.next();
+ if (ch == "<") {
+ if (source.equals("!")) {
+ source.next();
+ if (source.equals("[")) {
+ if (source.lookAhead("[CDATA[", true)) {
+ setState(inBlock("xml-cdata", "]]>"));
+ return null;
+ }
+ else {
+ return "xml-text";
+ }
+ }
+ else if (source.lookAhead("--", true)) {
+ setState(inBlock("xml-comment", "-->"));
+ return null;
+ }
+ else {
+ return "xml-text";
+ }
+ }
+ else if (source.equals("?")) {
+ source.next();
+ source.nextWhileMatches(/[\w\._\-]/);
+ setState(inBlock("xml-processing", "?>"));
+ return "xml-processing";
+ }
+ else {
+ if (source.equals("/")) source.next();
+ setState(inTag);
+ return "xml-punctuation";
+ }
+ }
+ else if (ch == "&") {
+ while (!source.endOfLine()) {
+ if (source.next() == ";")
+ break;
+ }
+ return "xml-entity";
+ }
+ else {
+ source.nextWhileMatches(/[^&<\n]/);
+ return "xml-text";
+ }
+ }
+
+ function inTag(source, setState) {
+ var ch = source.next();
+ if (ch == ">") {
+ setState(inText);
+ return "xml-punctuation";
+ }
+ else if (/[?\/]/.test(ch) && source.equals(">")) {
+ source.next();
+ setState(inText);
+ return "xml-punctuation";
+ }
+ else if (ch == "=") {
+ return "xml-punctuation";
+ }
+ else if (/[\'\"]/.test(ch)) {
+ setState(inAttribute(ch));
+ return null;
+ }
+ else {
+ source.nextWhileMatches(/[^\s\u00a0=<>\"\'\/?]/);
+ return "xml-name";
+ }
+ }
+
+ function inAttribute(quote) {
+ return function(source, setState) {
+ while (!source.endOfLine()) {
+ if (source.next() == quote) {
+ setState(inTag);
+ break;
+ }
+ }
+ return "xml-attribute";
+ };
+ }
+
+ function inBlock(style, terminator) {
+ return function(source, setState) {
+ while (!source.endOfLine()) {
+ if (source.lookAhead(terminator, true)) {
+ setState(inText);
+ break;
+ }
+ source.next();
+ }
+ return style;
+ };
+ }
+
+ return function(source, startState) {
+ return tokenizer(source, startState || inText);
+ };
+ })();
+
+ // The parser. The structure of this function largely follows that of
+ // parseJavaScript in parsejavascript.js (there is actually a bit more
+ // shared code than I'd like), but it is quite a bit simpler.
+ function parseXML(source) {
+ var tokens = tokenizeXML(source), token;
+ var cc = [base];
+ var tokenNr = 0, indented = 0;
+ var currentTag = null, context = null;
+ var consume;
+
+ function push(fs) {
+ for (var i = fs.length - 1; i >= 0; i--)
+ cc.push(fs[i]);
+ }
+ function cont() {
+ push(arguments);
+ consume = true;
+ }
+ function pass() {
+ push(arguments);
+ consume = false;
+ }
+
+ function markErr() {
+ token.style += " xml-error";
+ }
+ function expect(text) {
+ return function(style, content) {
+ if (content == text) cont();
+ else {markErr(); cont(arguments.callee);}
+ };
+ }
+
+ function pushContext(tagname, startOfLine) {
+ var noIndent = UseKludges.doNotIndent.hasOwnProperty(tagname) || (context && context.noIndent);
+ context = {prev: context, name: tagname, indent: indented, startOfLine: startOfLine, noIndent: noIndent};
+ }
+ function popContext() {
+ context = context.prev;
+ }
+ function computeIndentation(baseContext) {
+ return function(nextChars, current) {
+ var context = baseContext;
+ if (context && context.noIndent)
+ return current;
+ if (alignCDATA && /<!\[CDATA\[/.test(nextChars))
+ return 0;
+ if (context && /^<\//.test(nextChars))
+ context = context.prev;
+ while (context && !context.startOfLine)
+ context = context.prev;
+ if (context)
+ return context.indent + indentUnit;
+ else
+ return 0;
+ };
+ }
+
+ function base() {
+ return pass(element, base);
+ }
+ var harmlessTokens = {"xml-text": true, "xml-entity": true, "xml-comment": true, "xml-processing": true};
+ function element(style, content) {
+ if (content == "<") cont(tagname, attributes, endtag(tokenNr == 1));
+ else if (content == "</") cont(closetagname, expect(">"));
+ else if (style == "xml-cdata") {
+ if (!context || context.name != "!cdata") pushContext("!cdata");
+ if (/\]\]>$/.test(content)) popContext();
+ cont();
+ }
+ else if (harmlessTokens.hasOwnProperty(style)) cont();
+ else {markErr(); cont();}
+ }
+ function tagname(style, content) {
+ if (style == "xml-name") {
+ currentTag = content.toLowerCase();
+ token.style = "xml-tagname";
+ cont();
+ }
+ else {
+ currentTag = null;
+ pass();
+ }
+ }
+ function closetagname(style, content) {
+ if (style == "xml-name") {
+ token.style = "xml-tagname";
+ if (context && content.toLowerCase() == context.name) popContext();
+ else markErr();
+ }
+ cont();
+ }
+ function endtag(startOfLine) {
+ return function(style, content) {
+ if (content == "/>" || (content == ">" && UseKludges.autoSelfClosers.hasOwnProperty(currentTag))) cont();
+ else if (content == ">") {pushContext(currentTag, startOfLine); cont();}
+ else {markErr(); cont(arguments.callee);}
+ };
+ }
+ function attributes(style) {
+ if (style == "xml-name") {token.style = "xml-attname"; cont(attribute, attributes);}
+ else pass();
+ }
+ function attribute(style, content) {
+ if (content == "=") cont(value);
+ else if (content == ">" || content == "/>") pass(endtag);
+ else pass();
+ }
+ function value(style) {
+ if (style == "xml-attribute") cont(value);
+ else pass();
+ }
+
+ return {
+ indentation: function() {return indented;},
+
+ next: function(){
+ token = tokens.next();
+ if (token.style == "whitespace" && tokenNr == 0)
+ indented = token.value.length;
+ else
+ tokenNr++;
+ if (token.content == "\n") {
+ indented = tokenNr = 0;
+ token.indentation = computeIndentation(context);
+ }
+
+ if (token.style == "whitespace" || token.type == "xml-comment")
+ return token;
+
+ while(true){
+ consume = false;
+ cc.pop()(token.style, token.content);
+ if (consume) return token;
+ }
+ },
+
+ copy: function(){
+ var _cc = cc.concat([]), _tokenState = tokens.state, _context = context;
+ var parser = this;
+
+ return function(input){
+ cc = _cc.concat([]);
+ tokenNr = indented = 0;
+ context = _context;
+ tokens = tokenizeXML(input, _tokenState);
+ return parser;
+ };
+ }
+ };
+ }
+
+ return {
+ make: parseXML,
+ electricChars: "/",
+ configure: function(config) {
+ if (config.useHTMLKludges != null)
+ UseKludges = config.useHTMLKludges ? Kludges : NoKludges;
+ if (config.alignCDATA)
+ alignCDATA = config.alignCDATA;
+ }
+ };
+})();
fnp / redakcja.git / blobdiff