70 lines
2.3 KiB
JavaScript
70 lines
2.3 KiB
JavaScript
/**
|
|
* Various helper functions
|
|
*/
|
|
|
|
/**
|
|
* A PHP-style substr_replace
|
|
*
|
|
* Supports negative start and length and omitting length, but not
|
|
* str and replace arrays.
|
|
* See http://php.net/substr-replace for further documentation.
|
|
*/
|
|
function substr_replace(str, replace, start, length) {
|
|
var a2, b1;
|
|
a2 = (start < 0 ? str.length : 0) + start;
|
|
if (typeof length === 'undefined') {
|
|
length = str.length - a2;
|
|
} else if (length < 0 && start < 0 && length <= start) {
|
|
length = 0;
|
|
}
|
|
b1 = (length < 0 ? str.length : a2) + length;
|
|
return str.substring(0, a2) + replace + str.substring(b1);
|
|
}
|
|
|
|
/**
|
|
* Bind variables to a function call creating a closure
|
|
*
|
|
* Use this to circumvent variable scope problems when creating closures
|
|
* inside a loop
|
|
*
|
|
* @author Adrian Lang <lang@cosmocode.de>
|
|
* @link http://www.cosmocode.de/en/blog/gohr/2009-10/15-javascript-fixing-the-closure-scope-in-loops
|
|
* @param functionref fnc - the function to be called
|
|
* @param mixed - any arguments to be passed to the function
|
|
* @returns functionref
|
|
*/
|
|
function bind(fnc/*, ... */) {
|
|
var Aps = Array.prototype.slice,
|
|
// Store passed arguments in this scope.
|
|
// Since arguments is no Array nor has an own slice method,
|
|
// we have to apply the slice method from the Array.prototype
|
|
static_args = Aps.call(arguments, 1);
|
|
|
|
// Return a function evaluating the passed function with the
|
|
// given args and optional arguments passed on invocation.
|
|
return function (/* ... */) {
|
|
// Same here, but we use Array.prototype.slice solely for
|
|
// converting arguments to an Array.
|
|
return fnc.apply(this,
|
|
static_args.concat(Aps.call(arguments, 0)));
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Report an error from a JS file to the console
|
|
*
|
|
* @param e The error object
|
|
* @param file The file in which the error occurred
|
|
*/
|
|
function logError(e, file) {
|
|
if (window.console && console.error) {
|
|
console.error('The error "%s: %s" occurred in file "%s". ' +
|
|
'If this is in a plugin try updating or disabling the plugin, ' +
|
|
'if this is in a template try updating the template or switching to the "dokuwiki" template.',
|
|
e.name, e.message, file);
|
|
if(e.stack) {
|
|
console.error(e.stack);
|
|
}
|
|
}
|
|
}
|