com.fsck.k9.mail.filter.Base64类的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中com.fsck.k9.mail.filter.Base64类的一些代码示例，展示了Base64类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Base64类的具体详情如下：
包路径：com.fsck.k9.mail.filter.Base64
类名称：Base64

Base64介绍

[英]Provides Base64 encoding and decoding as defined by RFC 2045.

This class implements section 6.8. Base64 Content-Transfer-Encoding from RFC 2045 Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies by Freed and Borenstein.
[中]提供RFC 2045定义的Base64编码和解码。
此类实现了第6.8节。RFC 2045多用途Internet邮件扩展（MIME）的Base64内容传输编码第一部分：Freed和Borenstein的Internet邮件正文格式。

代码示例

代码示例来源：origin: k9mail/k-9

  1. public String toIdentityString() {
  2.   StringBuilder refString = new StringBuilder();
  3.   refString.append(IDENTITY_VERSION_1);
  4.   refString.append(IDENTITY_SEPARATOR);
  5.   refString.append(Base64.encode(accountUuid));
  6.   refString.append(IDENTITY_SEPARATOR);
  7.   refString.append(Base64.encode(folderServerId));
  8.   refString.append(IDENTITY_SEPARATOR);
  9.   refString.append(Base64.encode(uid));
  10.   if (flag != null) {
  11.     refString.append(IDENTITY_SEPARATOR);
  12.     refString.append(flag.name());
  13.   }
  14.   return refString.toString();
  15. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Encodes binary data using the base64 algorithm but does not chunk the output.
  3.  *
  4.  * @param binaryData
  5.  *            binary data to encode
  6.  * @return Base64 characters
  7.  */
  8. public static byte[] encodeBase64(byte[] binaryData) {
  9.   return encodeBase64(binaryData, false);
  10. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Closes this output stream, flushing any remaining bytes that must be encoded. The
  3.  * underlying stream is flushed but not closed.
  4.  */
  5. @Override
  6. public void close() throws IOException {
  7.   // Notify encoder of EOF (-1).
  8.   if (doEncode) {
  9.     base64.encode(singleByte, 0, -1);
  10.   } else {
  11.     base64.decode(singleByte, 0, -1);
  12.   }
  13.   flush();
  14. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Decodes Base64 data into octets
  3.  *
  4.  * @param base64Data Byte array containing Base64 data
  5.  * @return Array containing decoded data.
  6.  */
  7. public static byte[] decodeBase64(byte[] base64Data) {
  8.   if (base64Data == null || base64Data.length == 0) {
  9.     return base64Data;
  10.   }
  11.   Base64 b64 = new Base64();
  12.   long len = (base64Data.length * 3) / 4;
  13.   byte[] buf = new byte[(int) len];
  14.   b64.setInitialBuffer(buf, 0, buf.length);
  15.   b64.decode(base64Data, 0, base64Data.length);
  16.   b64.decode(base64Data, 0, -1); // Notify decoder of EOF.
  17.   // We have no idea what the line-length was, so we
  18.   // cannot know how much of our array wasn't used.
  19.   byte[] result = new byte[b64.pos];
  20.   b64.readResults(result, 0, result.length);
  21.   return result;
  22. }

代码示例来源：origin: k9mail/k-9

  1. public static String decode(String encoded) {
  2.   if (encoded == null) {
  3.     return null;
  4.   }
  5.   byte[] decoded = new Base64().decode(encoded.getBytes());
  6.   return new String(decoded);
  7. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Encode to a byte64-encoded integer according to crypto
  3.  * standards such as W3C's XML-Signature
  4.  *
  5.  * @param bigInt a BigInteger
  6.  * @return A byte array containing base64 character data
  7.  * @throws NullPointerException if null is passed in
  8.  */
  9. public static byte[] encodeInteger(BigInteger bigInt) {
  10.   if (bigInt == null) {
  11.     throw new NullPointerException("encodeInteger called with null parameter");
  12.   }
  13.   return encodeBase64(toIntegerBytes(bigInt), false);
  14. }

代码示例来源：origin: k9mail/k-9

  1. return binaryData;
  2. Base64 b64 = isChunked ? new Base64() : new Base64(0);
  3. b64.setInitialBuffer(buf, 0, buf.length);
  4. b64.encode(binaryData, 0, binaryData.length);
  5. b64.encode(binaryData, 0, -1); // Notify encoder of EOF.
  6.   b64.readResults(buf, 0, buf.length);

代码示例来源：origin: k9mail/k-9

  1. public static String encode(String s) {
  2.   if (s == null) {
  3.     return null;
  4.   }
  5.   byte[] encoded = new Base64().encode(s.getBytes());
  6.   return new String(encoded);
  7. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Decodes an Object using the base64 algorithm. This method is provided in order to satisfy the requirements of the
  3.  * Decoder interface, and will throw a DecoderException if the supplied object is not of type byte[].
  4.  *
  5.  * @param pObject
  6.  *            Object to decode
  7.  * @return An object (of type byte[]) containing the binary data which corresponds to the byte[] supplied.
  8.  * @throws DecoderException
  9.  *             if the parameter supplied is not of type byte[]
  10.  */
  11. public Object decode(Object pObject) throws DecoderException {
  12.   if (!(pObject instanceof byte[])) {
  13.     throw new DecoderException("Parameter supplied to Base64 decode is not a byte[]");
  14.   }
  15.   return decode((byte[]) pObject);
  16. }

代码示例来源：origin: k9mail/k-9

  1. byte[] nonce = Base64.decodeBase64(b64Nonce);
  2. return Base64.encodeBase64(plainCRAM.getBytes());

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Flushes this output stream and forces any buffered output bytes
  3.  * to be written out to the stream.  If propagate is true, the wrapped
  4.  * stream will also be flushed.
  5.  *
  6.  * @param propagate boolean flag to indicate whether the wrapped
  7.  *                  OutputStream should also be flushed.
  8.  * @throws IOException if an I/O error occurs.
  9.  */
  10. private void flush(boolean propagate) throws IOException {
  11.   int avail = base64.avail();
  12.   if (avail > 0) {
  13.     byte[] buf = new byte[avail];
  14.     int c = base64.readResults(buf, 0, avail);
  15.     if (c > 0) {
  16.       out.write(buf, 0, c);
  17.     }
  18.   }
  19.   if (propagate) {
  20.     out.flush();
  21.   }
  22. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Creates a Base64OutputStream such that all data written is either
  3.  * Base64-encoded or Base64-decoded to the original provided OutputStream.
  4.  *
  5.  * @param out      OutputStream to wrap.
  6.  * @param doEncode true if we should encode all data written to us,
  7.  *                 false if we should decode.
  8.  */
  9. public Base64OutputStream(OutputStream out, boolean doEncode) {
  10.   super(out);
  11.   this.doEncode = doEncode;
  12.   this.base64 = new Base64();
  13. }

代码示例来源：origin: k9mail/k-9

  1. int len = Math.min(avail(), bAvail);
  2. if (buf != b) {
  3.   System.arraycopy(buf, readPos, b, bPos, len);

代码示例来源：origin: k9mail/k-9

  1. @Nullable
  2. public static MessageReference parse(String identity) {
  3.   if (identity == null || identity.length() < 1 || identity.charAt(0) != IDENTITY_VERSION_1) {
  4.     return null;
  5.   }
  6.   StringTokenizer tokens = new StringTokenizer(identity.substring(2), IDENTITY_SEPARATOR, false);
  7.   if (tokens.countTokens() < 3) {
  8.     return null;
  9.   }
  10.   String accountUuid = Base64.decode(tokens.nextToken());
  11.   String folderServerId = Base64.decode(tokens.nextToken());
  12.   String uid = Base64.decode(tokens.nextToken());
  13.   if (!tokens.hasMoreTokens()) {
  14.     return new MessageReference(accountUuid, folderServerId, uid, null);
  15.   }
  16.   Flag flag;
  17.   try {
  18.     flag = Flag.valueOf(tokens.nextToken());
  19.   } catch (IllegalArgumentException e) {
  20.     return null;
  21.   }
  22.   return new MessageReference(accountUuid, folderServerId, uid, flag);
  23. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Creates a Base64OutputStream such that all data written is either
  3.  * Base64-encoded or Base64-decoded to the original provided OutputStream.
  4.  *
  5.  * @param out           OutputStream to wrap.
  6.  * @param doEncode      true if we should encode all data written to us,
  7.  *                      false if we should decode.
  8.  * @param lineLength    If doEncode is true, each line of encoded
  9.  *                      data will contain lineLength characters.
  10.  *                      If lineLength <=0, the encoded data is not divided into lines.
  11.  *                      If doEncode is false, lineLength is ignored.
  12.  * @param lineSeparator If doEncode is true, each line of encoded
  13.  *                      data will be terminated with this byte sequence (e.g. \r\n).
  14.  *                      If lineLength <= 0, the lineSeparator is not used.
  15.  *                      If doEncode is false lineSeparator is ignored.
  16.  */
  17. public Base64OutputStream(OutputStream out, boolean doEncode, int lineLength, byte[] lineSeparator) {
  18.   super(out);
  19.   this.doEncode = doEncode;
  20.   this.base64 = new Base64(lineLength, lineSeparator);
  21. }

代码示例来源：origin: k9mail/k-9

  1. private void saslAuthExternal() throws MessagingException, IOException {
  2.   executeCommand("AUTH EXTERNAL %s", Base64.encode(username));
  3. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Writes <code>len</code> bytes from the specified
  3.  * <code>b</code> array starting at <code>offset</code> to
  4.  * this output stream.
  5.  *
  6.  * @param b source byte array
  7.  * @param offset where to start reading the bytes
  8.  * @param len maximum number of bytes to write
  9.  *
  10.  * @throws IOException if an I/O error occurs.
  11.  * @throws NullPointerException if the byte array parameter is null
  12.  * @throws IndexOutOfBoundsException if offset, len or buffer size are invalid
  13.  */
  14. @Override
  15. public void write(byte b[], int offset, int len) throws IOException {
  16.   if (b == null) {
  17.     throw new NullPointerException();
  18.   } else if (offset < 0 || len < 0 || offset + len < 0) {
  19.     throw new IndexOutOfBoundsException();
  20.   } else if (offset > b.length || offset + len > b.length) {
  21.     throw new IndexOutOfBoundsException();
  22.   } else if (len > 0) {
  23.     if (doEncode) {
  24.       base64.encode(b, offset, len);
  25.     } else {
  26.       base64.decode(b, offset, len);
  27.     }
  28.     flush(false);
  29.   }
  30. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Encodes binary data using the base64 algorithm and chunks the encoded output into 76 character blocks
  3.  *
  4.  * @param binaryData
  5.  *            binary data to encode
  6.  * @return Base64 characters chunked in 76 character blocks
  7.  */
  8. public static byte[] encodeBase64Chunked(byte[] binaryData) {
  9.   return encodeBase64(binaryData, true);
  10. }

代码示例来源：origin: k9mail/k-9

  1. public static boolean shouldRetry(String response, String host) {
  2.     String decodedResponse = Base64.decode(response);
  4.     if (K9MailLib.isDebug()) {
  5.       Timber.v("Challenge response: %s", decodedResponse);
  6.     }
  8.     try {
  9.       JSONObject json = new JSONObject(decodedResponse);
  10.       String status = json.getString("status");
  11.       if (!BAD_RESPONSE.equals(status)) {
  12.         return false;
  13.       }
  14.     } catch (JSONException jsonException) {
  15.       Timber.e("Error decoding JSON response from: %s. Response was: %s", host, decodedResponse);
  16.     }
  18.     return true;
  19.   }
  20. }

代码示例来源：origin: k9mail/k-9

  1. /**
  2.  * Encodes an Object using the base64 algorithm. This method is provided in order to satisfy the requirements of the
  3.  * Encoder interface, and will throw an EncoderException if the supplied object is not of type byte[].
  4.  *
  5.  * @param pObject
  6.  *            Object to encode
  7.  * @return An object (of type byte[]) containing the base64 encoded data which corresponds to the byte[] supplied.
  8.  * @throws EncoderException
  9.  *             if the parameter supplied is not of type byte[]
  10.  */
  11. public Object encode(Object pObject) throws EncoderException {
  12.   if (!(pObject instanceof byte[])) {
  13.     throw new EncoderException("Parameter supplied to Base64 encode is not a byte[]");
  14.   }
  15.   return encode((byte[]) pObject);
  16. }

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