tsreflect-ioc/src/string.ts

Inversion of control and Dependency injection framework for typescript based on the tsreflect-compiler package.

/// <reference path="_references.ts" />
var extend = require('extend');

interface String {
    contains(searchFor: string, caseSensitive?: boolean): boolean;
    endsWith(suffix: string, caseSensitive?: boolean): boolean;
    startsWith(prefix: string, caseSensitive?: boolean): boolean;
}

class StringExtensions {

    contains(searchFor: string, caseSensitive ?: boolean): boolean {
        caseSensitive = caseSensitive || true;
        return caseSensitive ? this.toString().indexOf(searchFor) != -1 : this.toString().toLowerCase().indexOf(searchFor.toLowerCase()) != -1;
    }

    endsWith(suffix: string, caseSensitive ?: boolean): boolean {
        caseSensitive = caseSensitive || true;
        return caseSensitive ?
            (this.toString().length - this.toString().lastIndexOf(suffix)) == suffix.length :
            (this.toString().length - this.toString().toLowerCase().lastIndexOf(suffix)) == suffix.toLowerCase().length
    }

    startsWith(prefix: string, caseSensitive?: boolean): boolean {
        caseSensitive = caseSensitive || true;
        return caseSensitive ?
            this.toString().indexOf(prefix) == 0 :
            this.toString().toLowerCase().indexOf(prefix) == 0
    }
}

extend(false, String.prototype, StringExtensions.prototype);