| /* GENERATED SOURCE. DO NOT MODIFY. */ |
| package com.android.org.bouncycastle.asn1; |
| |
| import java.io.IOException; |
| |
| import com.android.org.bouncycastle.util.Arrays; |
| |
| /** |
| * DER BMPString object encodes BMP (<i>Basic Multilingual Plane</i>) subset |
| * (aka UCS-2) of UNICODE (ISO 10646) characters in codepoints 0 to 65535. |
| * <p> |
| * At ISO-10646:2011 the term "BMP" has been withdrawn, and replaced by |
| * term "UCS-2". |
| * </p> |
| * @hide This class is not part of the Android public SDK API |
| */ |
| public class DERBMPString |
| extends ASN1Primitive |
| implements ASN1String |
| { |
| private final char[] string; |
| |
| /** |
| * Return a BMP String from the given object. |
| * |
| * @param obj the object we want converted. |
| * @exception IllegalArgumentException if the object cannot be converted. |
| * @return a DERBMPString instance, or null. |
| */ |
| public static DERBMPString getInstance( |
| Object obj) |
| { |
| if (obj == null || obj instanceof DERBMPString) |
| { |
| return (DERBMPString)obj; |
| } |
| |
| if (obj instanceof byte[]) |
| { |
| try |
| { |
| return (DERBMPString)fromByteArray((byte[])obj); |
| } |
| catch (Exception e) |
| { |
| throw new IllegalArgumentException("encoding error in getInstance: " + e.toString()); |
| } |
| } |
| |
| throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); |
| } |
| |
| /** |
| * Return a BMP String from a tagged object. |
| * |
| * @param obj the tagged object holding the object we want |
| * @param explicit true if the object is meant to be explicitly |
| * tagged false otherwise. |
| * @exception IllegalArgumentException if the tagged object cannot |
| * be converted. |
| * @return a DERBMPString instance. |
| */ |
| public static DERBMPString getInstance( |
| ASN1TaggedObject obj, |
| boolean explicit) |
| { |
| ASN1Primitive o = obj.getObject(); |
| |
| if (explicit || o instanceof DERBMPString) |
| { |
| return getInstance(o); |
| } |
| else |
| { |
| return new DERBMPString(ASN1OctetString.getInstance(o).getOctets()); |
| } |
| } |
| |
| /** |
| * Basic constructor - byte encoded string. |
| * @param string the encoded BMP STRING to wrap. |
| */ |
| DERBMPString( |
| byte[] string) |
| { |
| if (string == null) |
| { |
| throw new NullPointerException("'string' cannot be null"); |
| } |
| |
| int byteLen = string.length; |
| if (0 != (byteLen & 1)) |
| { |
| throw new IllegalArgumentException("malformed BMPString encoding encountered"); |
| } |
| |
| int charLen = byteLen / 2; |
| char[] cs = new char[charLen]; |
| |
| for (int i = 0; i != charLen; i++) |
| { |
| cs[i] = (char)((string[2 * i] << 8) | (string[2 * i + 1] & 0xff)); |
| } |
| |
| this.string = cs; |
| } |
| |
| DERBMPString(char[] string) |
| { |
| if (string == null) |
| { |
| throw new NullPointerException("'string' cannot be null"); |
| } |
| |
| this.string = string; |
| } |
| |
| /** |
| * Basic constructor |
| * @param string a String to wrap as a BMP STRING. |
| */ |
| public DERBMPString( |
| String string) |
| { |
| if (string == null) |
| { |
| throw new NullPointerException("'string' cannot be null"); |
| } |
| |
| this.string = string.toCharArray(); |
| } |
| |
| public String getString() |
| { |
| return new String(string); |
| } |
| |
| public String toString() |
| { |
| return getString(); |
| } |
| |
| public int hashCode() |
| { |
| return Arrays.hashCode(string); |
| } |
| |
| protected boolean asn1Equals( |
| ASN1Primitive o) |
| { |
| if (!(o instanceof DERBMPString)) |
| { |
| return false; |
| } |
| |
| DERBMPString s = (DERBMPString)o; |
| |
| return Arrays.areEqual(string, s.string); |
| } |
| |
| boolean isConstructed() |
| { |
| return false; |
| } |
| |
| int encodedLength() |
| { |
| return 1 + StreamUtil.calculateBodyLength(string.length * 2) + (string.length * 2); |
| } |
| |
| void encode( |
| ASN1OutputStream out, boolean withTag) |
| throws IOException |
| { |
| int count = string.length; |
| if (withTag) |
| { |
| out.write(BERTags.BMP_STRING); |
| } |
| out.writeLength(count * 2); |
| |
| byte[] buf = new byte[8]; |
| |
| int i = 0, limit = count & -4; |
| while (i < limit) |
| { |
| char c0 = string[i], c1 = string[i + 1], c2 = string[i + 2], c3 = string[i + 3]; |
| i += 4; |
| |
| buf[0] = (byte)(c0 >> 8); |
| buf[1] = (byte)c0; |
| buf[2] = (byte)(c1 >> 8); |
| buf[3] = (byte)c1; |
| buf[4] = (byte)(c2 >> 8); |
| buf[5] = (byte)c2; |
| buf[6] = (byte)(c3 >> 8); |
| buf[7] = (byte)c3; |
| |
| out.write(buf, 0, 8); |
| } |
| if (i < count) |
| { |
| int bufPos = 0; |
| do |
| { |
| char c0 = string[i]; |
| i += 1; |
| |
| buf[bufPos++] = (byte)(c0 >> 8); |
| buf[bufPos++] = (byte)c0; |
| } |
| while (i < count); |
| |
| out.write(buf, 0, bufPos); |
| } |
| } |
| } |