Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2009 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.
 */

import android.text.TextUtils;

import java.util.Arrays;

import java.util.HashSet;

import java.util.Set;

public class Main {
    private static final Set<Character> sUnAcceptableAsciiInV21WordSet = new HashSet<>(
            Arrays.asList('[', ']', '=', ':', '.', ',', ' '));

    /**
     * <p>
     * Returns true when the given String is categorized as "word" specified in vCard spec 2.1.
     * </p>
     * <p>
     * vCard 2.1 specifies:<br />
     * word = &lt;any printable 7bit us-ascii except []=:., &gt;
     * </p>
     */
    public static boolean isV21Word(final String value) {
        if (TextUtils.isEmpty(value)) {
            return true;
        }
        final int asciiFirst = 0x20;
        final int asciiLast = 0x7E; // included
        final int length = value.length();
        for (int i = 0; i < length; i = value.offsetByCodePoints(i, 1)) {
            final int c = value.codePointAt(i);
            if (!(asciiFirst <= c && c <= asciiLast) || sUnAcceptableAsciiInV21WordSet.contains((char) c)) {
                return false;
            }
        }
        return true;
    }
}