292 lines
8.5 KiB
JavaScript
292 lines
8.5 KiB
JavaScript
|
/* 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 if (source.lookAhead("DOCTYPE", true)) {
|
||
|
|
source.nextWhileMatches(/[\w\._\-]/);
|
||
|
|
setState(inBlock("xml-doctype", ">"));
|
||
|
|
return "xml-doctype";
|
||
|
|
}
|
||
|
|
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\[/.test(nextChars))
|
||
|
|
return 0;
|
||
|
|
if (context && /^<\//.test(nextChars))
|
||
|
|
context = context.prev;
|
||
|
|
while (context && !context.startOfLine)
|
||
|
|
context = context.prev;
|
||
|
|
if (context)
|
||
|
|
return context.indent + indentUnit;
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
function base() {
|
||
|
|
return pass(element, base);
|
||
|
|
}
|
||
|
|
var harmlessTokens = {"xml-text": true, "xml-entity": true, "xml-comment": true, "xml-processing": true, "xml-doctype": true};
|
||
|
|
function element(style, content) {
|
||
|
|
if (content == "<") cont(tagname, attributes, endtag(tokenNr == 1));
|
||
|
|
else if (content == "</") cont(closetagname, expect(">"));
|
||
|
|
else if (style == "xml-cdata") {
|
||
|
|
if (!context || context.name != "!cdata") pushContext("!cdata");
|
||
|
|
if (/\]\]>$/.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;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
})();
|