phpjs
Version:
166 lines (159 loc) • 8.65 kB
JavaScript
function echo() {
// http://kevin.vanzonneveld.net
// + original by: Philip Peterson
// + improved by: echo is bad
// + improved by: Nate
// + revised by: Der Simon (http://innerdom.sourceforge.net/)
// + improved by: Brett Zamir (http://brett-zamir.me)
// + bugfixed by: Eugene Bulkin (http://doubleaw.com/)
// + input by: JB
// + improved by: Brett Zamir (http://brett-zamir.me)
// + bugfixed by: Brett Zamir (http://brett-zamir.me)
// + bugfixed by: Brett Zamir (http://brett-zamir.me)
// + bugfixed by: EdorFaus
// + improved by: Brett Zamir (http://brett-zamir.me)
// % note 1: If browsers start to support DOM Level 3 Load and Save (parsing/serializing),
// % note 1: we wouldn't need any such long code (even most of the code below). See
// % note 1: link below for a cross-browser implementation in JavaScript. HTML5 might
// % note 1: possibly support DOMParser, but that is not presently a standard.
// % note 2: Although innerHTML is widely used and may become standard as of HTML5, it is also not ideal for
// % note 2: use with a temporary holder before appending to the DOM (as is our last resort below),
// % note 2: since it may not work in an XML context
// % note 3: Using innerHTML to directly add to the BODY is very dangerous because it will
// % note 3: break all pre-existing references to HTMLElements.
// * example 1: echo('<div><p>abc</p><p>abc</p></div>');
// * returns 1: undefined
// Fix: This function really needs to allow non-XHTML input (unless in true XHTML mode) as in jQuery
var arg = '',
argc = arguments.length,
argv = arguments,
i = 0,
holder, win = this.window,
d = win.document,
ns_xhtml = 'http://www.w3.org/1999/xhtml',
ns_xul = 'http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul'; // If we're in a XUL context
var stringToDOM = function(str, parent, ns, container) {
var extraNSs = '';
if (ns === ns_xul) {
extraNSs = ' xmlns:html="' + ns_xhtml + '"';
}
var stringContainer = '<' + container + ' xmlns="' + ns + '"' + extraNSs + '>' + str + '</' + container + '>';
var dils = win.DOMImplementationLS,
dp = win.DOMParser,
ax = win.ActiveXObject;
if (dils && dils.createLSInput && dils.createLSParser) {
// Follows the DOM 3 Load and Save standard, but not
// implemented in browsers at present; HTML5 is to standardize on innerHTML, but not for XML (though
// possibly will also standardize with DOMParser); in the meantime, to ensure fullest browser support, could
// attach http://svn2.assembla.com/svn/brettz9/DOMToString/DOM3.js (see http://svn2.assembla.com/svn/brettz9/DOMToString/DOM3.xhtml for a simple test file)
var lsInput = dils.createLSInput();
// If we're in XHTML, we'll try to allow the XHTML namespace to be available by default
lsInput.stringData = stringContainer;
var lsParser = dils.createLSParser(1, null); // synchronous, no schema type
return lsParser.parse(lsInput).firstChild;
} else if (dp) {
// If we're in XHTML, we'll try to allow the XHTML namespace to be available by default
try {
var fc = new dp().parseFromString(stringContainer, 'text/xml');
if (fc && fc.documentElement && fc.documentElement.localName !== 'parsererror' && fc.documentElement.namespaceURI !== 'http://www.mozilla.org/newlayout/xml/parsererror.xml') {
return fc.documentElement.firstChild;
}
// If there's a parsing error, we just continue on
} catch (e) {
// If there's a parsing error, we just continue on
}
} else if (ax) { // We don't bother with a holder in Explorer as it doesn't support namespaces
var axo = new ax('MSXML2.DOMDocument');
axo.loadXML(str);
return axo.documentElement;
}
/*else if (win.XMLHttpRequest) { // Supposed to work in older Safari
var req = new win.XMLHttpRequest;
req.open('GET', 'data:application/xml;charset=utf-8,'+encodeURIComponent(str), false);
if (req.overrideMimeType) {
req.overrideMimeType('application/xml');
}
req.send(null);
return req.responseXML;
}*/
// Document fragment did not work with innerHTML, so we create a temporary element holder
// If we're in XHTML, we'll try to allow the XHTML namespace to be available by default
//if (d.createElementNS && (d.contentType && d.contentType !== 'text/html')) { // Don't create namespaced elements if we're being served as HTML (currently only Mozilla supports this detection in true XHTML-supporting browsers, but Safari and Opera should work with the above DOMParser anyways, and IE doesn't support createElementNS anyways)
if (d.createElementNS && // Browser supports the method
(d.documentElement.namespaceURI || // We can use if the document is using a namespace
d.documentElement.nodeName.toLowerCase() !== 'html' || // We know it's not HTML4 or less, if the tag is not HTML (even if the root namespace is null)
(d.contentType && d.contentType !== 'text/html') // We know it's not regular HTML4 or less if this is Mozilla (only browser supporting the attribute) and the content type is something other than text/html; other HTML5 roots (like svg) still have a namespace
)) { // Don't create namespaced elements if we're being served as HTML (currently only Mozilla supports this detection in true XHTML-supporting browsers, but Safari and Opera should work with the above DOMParser anyways, and IE doesn't support createElementNS anyways); last test is for the sake of being in a pure XML document
holder = d.createElementNS(ns, container);
} else {
holder = d.createElement(container); // Document fragment did not work with innerHTML
}
holder.innerHTML = str;
while (holder.firstChild) {
parent.appendChild(holder.firstChild);
}
return false;
// throw 'Your browser does not support DOM parsing as required by echo()';
};
var ieFix = function(node) {
if (node.nodeType === 1) {
var newNode = d.createElement(node.nodeName);
var i, len;
if (node.attributes && node.attributes.length > 0) {
for (i = 0, len = node.attributes.length; i < len; i++) {
newNode.setAttribute(node.attributes[i].nodeName, node.getAttribute(node.attributes[i].nodeName));
}
}
if (node.childNodes && node.childNodes.length > 0) {
for (i = 0, len = node.childNodes.length; i < len; i++) {
newNode.appendChild(ieFix(node.childNodes[i]));
}
}
return newNode;
} else {
return d.createTextNode(node.nodeValue);
}
};
var replacer = function(s, m1, m2) {
// We assume for now that embedded variables do not have dollar sign; to add a dollar sign, you currently must use {$$var} (We might change this, however.)
// Doesn't cover all cases yet: see http://php.net/manual/en/language.types.string.php#language.types.string.syntax.double
if (m1 !== '\\') {
return m1 + eval(m2);
} else {
return s;
}
};
this.php_js = this.php_js || {};
var phpjs = this.php_js,
ini = phpjs.ini,
obs = phpjs.obs;
for (i = 0; i < argc; i++) {
arg = argv[i];
if (ini && ini['phpjs.echo_embedded_vars']) {
arg = arg.replace(/(.?)\{?\$(\w*?\}|\w*)/g, replacer);
}
if (!phpjs.flushing && obs && obs.length) { // If flushing we output, but otherwise presence of a buffer means caching output
obs[obs.length - 1].buffer += arg;
continue;
}
if (d.appendChild) {
if (d.body) {
if (win.navigator.appName === 'Microsoft Internet Explorer') { // We unfortunately cannot use feature detection, since this is an IE bug with cloneNode nodes being appended
d.body.appendChild(stringToDOM(ieFix(arg)));
} else {
var unappendedLeft = stringToDOM(arg, d.body, ns_xhtml, 'div').cloneNode(true); // We will not actually append the div tag (just using for providing XHTML namespace by default)
if (unappendedLeft) {
d.body.appendChild(unappendedLeft);
}
}
} else {
d.documentElement.appendChild(stringToDOM(arg, d.documentElement, ns_xul, 'description')); // We will not actually append the description tag (just using for providing XUL namespace by default)
}
} else if (d.write) {
d.write(arg);
}
/* else { // This could recurse if we ever add print!
print(arg);
}*/
}
}