IUnknown68’s gists

IUnknown68 / logWindowCalls.js

Last active December 31, 2015 01:29

Logs all calls on a DOM window (or any other object) to the console by replacing the functions with a wrapper. NOTE: This does not deal with errors, it is just for debugging purposes.

	var target = window;
	for (var i in target) {
	if ("function" != typeof target[i]) continue;
	target[i] = (function(name, fn) {
	return function() {
	console.log("" + name + " called");
	return fn.apply(target, arguments);
	}
	})(i, target[i]);
	}

IUnknown68 / parseVersion.js

Last active August 29, 2015 13:57

Semantic Versioning: Extract version info

	function parseVersion(s) {
	var m = exp.exec(s);
	return (m) ?
	{
	major: m[1],
	minor: m[2],
	patch: m[3],
	pre: m[5] \|\| '',
	meta: m[7] \|\| ''
	} :

IUnknown68 / BlockSizeInBytes

Last active August 29, 2015 13:58

BlockSizeInBytes - block size, alignment

	// ---------------------------------------------------------------------------
	// BlockSizeInBytes
	// Returns the number of bytes required to hold <aCount> objects of type <T>
	// in blocks of <aBlockSize> bytes.
	template <typename T> inline size_t BlockSizeInBytes(size_t aCount, size_t aBlockSize = 4)
	{
	return (((aCount * sizeof(T)) + aBlockSize - 1) / aBlockSize) * aBlockSize;
	}

IUnknown68 / DelegateCollection.js

Last active August 29, 2015 14:06

Array where you can add methods which will be called on each entry.

	//==============================================================================
	function DelegateCollection() {
	for (var i = 0, m = arguments.length; i < m; i++) {
	this.addCall(arguments[i]);
	}
	}

	//------------------------------------------------------------------------------
	DelegateCollection.prototype = new Array;

IUnknown68 / InitManager.js

Created November 22, 2014 11:44

InitManager is a simple state machine, that runs an `init` or `shutdown` function for each state. It has methods to walk up or down to a certain state, and makes sure that each `init` (for walking up) or `shutdown` (waliking down) is called exactly once and only if needed.

	//==============================================================================
	// class InitManager
	function InitManager(arStates) {
	var _state = 0;

	//----------------------------------------------------------------------------
	// privates

	// return `aState` limited to a valid arStates index
	var _sanitizeState = function(aState) {

IUnknown68 / chrome-RPC.js

Last active August 29, 2015 14:10

RPC for chrome. Connects objects between background/content/extension scripts in the most simple way.

	//==============================================================================
	var RPC = (function(){
	var RPC = {};
	var _nextConnectionId = 1;
	var _nextMessageId = 1;
	var _nextObjectId = 1;

	/***
	* Class _SharedObject
	*/

IUnknown68 / gist:b32bc4c7b351b9d579f4

Created March 12, 2015 13:00

Constrain image size

	bool ConstrainImageSize(
	int &aWidth, // in/out - actual image width
	int &aHeight, // in/out - actual image height
	const int aMaxWidth, // in - max width
	const int aMaxHeight // in - max height
	) const
	{
	float ratioNeed = std::max( (float)aWidth / (float)aMaxWidth, (float)aHeight / (float)aMaxHeight );
	if( ratioNeed > 1.0 ) {
	// actually needs downscaling at all

IUnknown68 / formatString

Created May 25, 2015 14:02

	function formatS(s) {
	var args = Array.prototype.slice.call(arguments);
	var _replFn = function(all, before, index) {
	return before + args[parseInt(index)];
	}
	return s.replace(formatS._m, _replFn).replace('%%', '%');
	}
	formatS._m = /([^%])%([0-9]+)/g;

IUnknown68 / ShowScripts.js

Last active August 29, 2015 14:22

Bookmark for showing inline JS. Copy the last line of `ShowScripts.js` (without `// `) as content into a new bookmark in your browser. Then in any page click the bookmark. Does not work when the content policy forbids foreign css.

	(function(){
	var el = document.createElement('link');
	el.rel="stylesheet";
	el.type="text/css";
	el.href="http://www.seiberspace.de/media/show-scripts.css";
	document.head.appendChild(el);
	})();

	// for pasting into bookmarks:
	// javascript:(function(){var%20el%20=%20document.createElement('link');el.rel="stylesheet";el.type="text/css";el.href="http://www.seiberspace.de/media/show-scripts.css";document.head.appendChild(el);})();

IUnknown68 / getLatestVersion

Created June 18, 2015 13:21

Small algorithm for getting a list of latest versions from a version history.

	var g = [
	{
	v: '1.0.0',
	f: ['README.md', 'new/images/image1.jpg','new/images/image2.jpg','new/images/image3.jpg']
	},
	{
	v: '0.2.0',
	f: ['README.md', 'foo/bar/bar.txt']
	},
	{

Arne Seib IUnknown68