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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      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 android.location.cts.asn1.base;
     18 
     19 import com.google.common.collect.ImmutableList;
     20 
     21 import java.util.Collection;
     22 
     23 /**
     24  * A visible string is a subset of US-ASCII, with character set defined in ITU-T Rec. X.680-0207,
     25  * 39.7. The characters is the subset of visible US-ASCII characters plus space.
     26  *
     27  */
     28 public class Asn1VisibleString extends Asn1IA5String {
     29   private static final Collection<Asn1Tag> possibleFirstTags =
     30       ImmutableList.of(Asn1Tag.VISIBLE_STRING);
     31 
     32   static final String PRINTABLE_ALPHABET =
     33       " !\"#$%&'()*+,-./0123456789:;<=>?@"
     34       + "ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`"
     35       + "abcdefghijklmnopqrstuvwxyz{|}~";
     36 
     37   public Asn1VisibleString() {
     38     super();
     39     setAlphabet(PRINTABLE_ALPHABET);
     40   }
     41 
     42   public static Collection<Asn1Tag> getPossibleFirstTags() {
     43     return possibleFirstTags;
     44   }
     45 
     46   @Override Asn1Tag getDefaultTag() {
     47     return Asn1Tag.VISIBLE_STRING;
     48   }
     49 }
     50