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package model.asn1;
import model.asn1.exceptions.ParseException;
import model.asn1.parsing.BytesReader;
import ui.Utils;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
/**
* Represents an ASN.1 UTF8String type. It accepts any UTF-8 chars. Because UTF-8 character set is large and its chars
* have variable width, this implementation does not validate against legal UTF-8 characters.
*/
public class UTF8String extends ASN1String {
/**
* The X.680 universal class tag assignment.
*/
public static final Tag TAG = new Tag(TagClass.UNIVERSAL, false, 0x0C);
/**
* EFFECTS: Constructs a UTF8String with the given tag and string.
* Throws {@link ParseException} if the string is illegal.
* REQUIRES: For the requirements of tag and parentTag, consult {@link ASN1Object}.
*/
public UTF8String(Tag tag, Tag parentTag, String string) throws ParseException {
super(tag, parentTag, string);
}
/**
* EFFECTS: Parse from user input. Tags are parsed as-per {@link ASN1Object}. The value will be parsed as UTF-8 big
* endian.
* Throws {@link ParseException} if the encoded data is invalid.
* MODIFIES: this, encoded
*/
public UTF8String(BytesReader encoded, boolean hasParentTag) throws ParseException, IllegalArgumentException {
super(encoded, hasParentTag);
setString(new String(Utils.byteToByte(encoded.require(getLength(), true)),
StandardCharsets.UTF_8));
}
}
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