Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    /**
     * Anything other than letter and numbers are considered delimiters.  Remove start and end
     * delimiters since they are not relevant to search.
     *
     * @param query The query string to clean.
     * @return The cleaned query. Empty string if all characters are cleaned out.
     */
    public static String cleanStartAndEndOfSearchQuery(String query) {
        int start = 0;
        while (start < query.length()) {
            int codePoint = query.codePointAt(start);
            if (Character.isLetterOrDigit(codePoint)) {
                break;
            }
            start += Character.charCount(codePoint);
        }

        if (start == query.length()) {
            // All characters are delimiters.
            return "";
        }

        int end = query.length() - 1;
        while (end > -1) {
            if (Character.isLowSurrogate(query.charAt(end))) {
                // Assume valid i18n string.  There should be a matching high surrogate before it.
                end--;
            }
            int codePoint = query.codePointAt(end);
            if (Character.isLetterOrDigit(codePoint)) {
                break;
            }
            end--;
        }

        // end is a letter or digit.
        return query.substring(start, end + 1);
    }
}