1 /* 2 * Copyright (C) 2010 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.clearsilver.jsilver.functions.string; 18 19 import com.google.clearsilver.jsilver.functions.NonEscapingFunction; 20 import com.google.clearsilver.jsilver.values.Value; 21 import static com.google.clearsilver.jsilver.values.Value.literalConstant; 22 23 /** 24 * Returns the numeric position of the substring in the string (if found), otherwise returns -1 25 * similar to the Python string.find method. 26 */ 27 public class FindFunction extends NonEscapingFunction { 28 29 /** 30 * @param args 2 string expressions (full string and substring) 31 * @return Position of the start of substring (or -1 if not found) as number value 32 */ 33 public Value execute(Value... args) { 34 Value fullStringValue = args[0]; 35 Value subStringValue = args[1]; 36 return literalConstant(fullStringValue.asString().indexOf(subStringValue.asString()), 37 fullStringValue, subStringValue); 38 } 39 } 40
