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Diffstat (limited to 'src/android/support/v7/mms/pdu/Base64.java')
-rw-r--r--src/android/support/v7/mms/pdu/Base64.java167
1 files changed, 0 insertions, 167 deletions
diff --git a/src/android/support/v7/mms/pdu/Base64.java b/src/android/support/v7/mms/pdu/Base64.java
deleted file mode 100644
index 9f3418f..0000000
--- a/src/android/support/v7/mms/pdu/Base64.java
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Copyright (C) 2007 Esmertec AG.
- * Copyright (C) 2007 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.
- */
-
-package android.support.v7.mms.pdu;
-
-public class Base64 {
- /**
- * Used to get the number of Quadruples.
- */
- static final int FOURBYTE = 4;
-
- /**
- * Byte used to pad output.
- */
- static final byte PAD = (byte) '=';
-
- /**
- * The base length.
- */
- static final int BASELENGTH = 255;
-
- // Create arrays to hold the base64 characters
- private static byte[] base64Alphabet = new byte[BASELENGTH];
-
- // Populating the character arrays
- static {
- for (int i = 0; i < BASELENGTH; i++) {
- base64Alphabet[i] = (byte) -1;
- }
- for (int i = 'Z'; i >= 'A'; i--) {
- base64Alphabet[i] = (byte) (i - 'A');
- }
- for (int i = 'z'; i >= 'a'; i--) {
- base64Alphabet[i] = (byte) (i - 'a' + 26);
- }
- for (int i = '9'; i >= '0'; i--) {
- base64Alphabet[i] = (byte) (i - '0' + 52);
- }
-
- base64Alphabet['+'] = 62;
- base64Alphabet['/'] = 63;
- }
-
- /**
- * Decodes Base64 data into octects
- *
- * @param base64Data Byte array containing Base64 data
- * @return Array containing decoded data.
- */
- public static byte[] decodeBase64(byte[] base64Data) {
- // RFC 2045 requires that we discard ALL non-Base64 characters
- base64Data = discardNonBase64(base64Data);
-
- // handle the edge case, so we don't have to worry about it later
- if (base64Data.length == 0) {
- return new byte[0];
- }
-
- int numberQuadruple = base64Data.length / FOURBYTE;
- byte decodedData[] = null;
- byte b1 = 0, b2 = 0, b3 = 0, b4 = 0, marker0 = 0, marker1 = 0;
-
- // Throw away anything not in base64Data
-
- int encodedIndex = 0;
- int dataIndex = 0;
- {
- // this sizes the output array properly - rlw
- int lastData = base64Data.length;
- // ignore the '=' padding
- while (base64Data[lastData - 1] == PAD) {
- if (--lastData == 0) {
- return new byte[0];
- }
- }
- decodedData = new byte[lastData - numberQuadruple];
- }
-
- for (int i = 0; i < numberQuadruple; i++) {
- dataIndex = i * 4;
- marker0 = base64Data[dataIndex + 2];
- marker1 = base64Data[dataIndex + 3];
-
- b1 = base64Alphabet[base64Data[dataIndex]];
- b2 = base64Alphabet[base64Data[dataIndex + 1]];
-
- if (marker0 != PAD && marker1 != PAD) {
- //No PAD e.g 3cQl
- b3 = base64Alphabet[marker0];
- b4 = base64Alphabet[marker1];
-
- decodedData[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);
- decodedData[encodedIndex + 1] =
- (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
- decodedData[encodedIndex + 2] = (byte) (b3 << 6 | b4);
- } else if (marker0 == PAD) {
- //Two PAD e.g. 3c[Pad][Pad]
- decodedData[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);
- } else if (marker1 == PAD) {
- //One PAD e.g. 3cQ[Pad]
- b3 = base64Alphabet[marker0];
-
- decodedData[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);
- decodedData[encodedIndex + 1] =
- (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));
- }
- encodedIndex += 3;
- }
- return decodedData;
- }
-
- /**
- * Check octect wheter it is a base64 encoding.
- *
- * @param octect to be checked byte
- * @return ture if it is base64 encoding, false otherwise.
- */
- private static boolean isBase64(byte octect) {
- if (octect == PAD) {
- return true;
- } else if (base64Alphabet[octect] == -1) {
- return false;
- } else {
- return true;
- }
- }
-
- /**
- * Discards any characters outside of the base64 alphabet, per
- * the requirements on page 25 of RFC 2045 - "Any characters
- * outside of the base64 alphabet are to be ignored in base64
- * encoded data."
- *
- * @param data The base-64 encoded data to groom
- * @return The data, less non-base64 characters (see RFC 2045).
- */
- static byte[] discardNonBase64(byte[] data) {
- byte groomedData[] = new byte[data.length];
- int bytesCopied = 0;
-
- for (int i = 0; i < data.length; i++) {
- if (isBase64(data[i])) {
- groomedData[bytesCopied++] = data[i];
- }
- }
-
- byte packedData[] = new byte[bytesCopied];
-
- System.arraycopy(groomedData, 0, packedData, 0, bytesCopied);
-
- return packedData;
- }
-}