angular2
Version:
Angular 2 - a web framework for modern web apps
83 lines • 10.3 kB
JavaScript
;"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var lang_1 = require('angular2/src/facade/lang');
var core_1 = require('angular2/core');
var invalid_pipe_argument_exception_1 = require('./invalid_pipe_argument_exception');
/**
* Creates a new String with some or all of the matches of a pattern replaced by
* a replacement.
*
* The pattern to be matched is specified by the 'pattern' parameter.
*
* The replacement to be set is specified by the 'replacement' parameter.
*
* An optional 'flags' parameter can be set.
*
* ### Usage
*
* expression | replace:pattern:replacement
*
* All behavior is based on the expected behavior of the JavaScript API
* String.prototype.replace() function.
*
* Where the input expression is a [String] or [Number] (to be treated as a string),
* the `pattern` is a [String] or [RegExp],
* the 'replacement' is a [String] or [Function].
*
* --Note--: The 'pattern' parameter will be converted to a RegExp instance. Make sure to escape the
* string properly if you are matching for regular expression special characters like parenthesis,
* brackets etc.
*/
var ReplacePipe = (function () {
function ReplacePipe() {
}
ReplacePipe.prototype.transform = function (value, pattern, replacement) {
if (lang_1.isBlank(value)) {
return value;
}
if (!this._supportedInput(value)) {
throw new invalid_pipe_argument_exception_1.InvalidPipeArgumentException(ReplacePipe, value);
}
var input = value.toString();
if (!this._supportedPattern(pattern)) {
throw new invalid_pipe_argument_exception_1.InvalidPipeArgumentException(ReplacePipe, pattern);
}
if (!this._supportedReplacement(replacement)) {
throw new invalid_pipe_argument_exception_1.InvalidPipeArgumentException(ReplacePipe, replacement);
}
// template fails with literal RegExp e.g /pattern/igm
// var rgx = pattern instanceof RegExp ? pattern : RegExpWrapper.create(pattern);
if (lang_1.isFunction(replacement)) {
var rgxPattern = lang_1.isString(pattern) ? lang_1.RegExpWrapper.create(pattern) : pattern;
return lang_1.StringWrapper.replaceAllMapped(input, rgxPattern, replacement);
}
if (pattern instanceof RegExp) {
// use the replaceAll variant
return lang_1.StringWrapper.replaceAll(input, pattern, replacement);
}
return lang_1.StringWrapper.replace(input, pattern, replacement);
};
ReplacePipe.prototype._supportedInput = function (input) { return lang_1.isString(input) || lang_1.isNumber(input); };
ReplacePipe.prototype._supportedPattern = function (pattern) {
return lang_1.isString(pattern) || pattern instanceof RegExp;
};
ReplacePipe.prototype._supportedReplacement = function (replacement) {
return lang_1.isString(replacement) || lang_1.isFunction(replacement);
};
ReplacePipe = __decorate([
core_1.Pipe({ name: 'replace' }),
core_1.Injectable(),
__metadata('design:paramtypes', [])
], ReplacePipe);
return ReplacePipe;
}());
exports.ReplacePipe = ReplacePipe;
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