From fb450889760f29622941584112382d6574618596 Mon Sep 17 00:00:00 2001 From: Doug Zongker Date: Sun, 14 Feb 2010 15:31:27 -0800 Subject: remove Base64 from android-common This is now available in the framework as android.util.base64.*; Change-Id: I54901d32b2b5b291cfa0b4c2479b805038ba12ac --- common/java/com/android/common/Base64.java | 705 --------------------- .../java/com/android/common/Base64InputStream.java | 169 ----- .../com/android/common/Base64OutputStream.java | 153 ----- .../tests/src/com/android/common/Base64Test.java | 520 --------------- 4 files changed, 1547 deletions(-) delete mode 100644 common/java/com/android/common/Base64.java delete mode 100644 common/java/com/android/common/Base64InputStream.java delete mode 100644 common/java/com/android/common/Base64OutputStream.java delete mode 100644 common/tests/src/com/android/common/Base64Test.java (limited to 'common') diff --git a/common/java/com/android/common/Base64.java b/common/java/com/android/common/Base64.java deleted file mode 100644 index d65e24e..0000000 --- a/common/java/com/android/common/Base64.java +++ /dev/null @@ -1,705 +0,0 @@ -/* - * Copyright (C) 2010 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 com.android.common; - -/** - * Utilities for encoding and decoding the Base64 encoding. See RFCs - * 2045 and 3548. - */ -public class Base64 { - /** - * Default values for encoder/decoder flags. - */ - public static final int DEFAULT = 0; - - /** - * Encoder flag bit to indicate you want the padding '=' - * characters at the end (if any) to be omitted. - */ - public static final int NO_PADDING = 1; - - /** - * Encoder flag bit to indicate you want all line terminators to - * be omitted (ie, the output will be on one long line). - */ - public static final int NO_WRAP = 2; - - /** - * Encoder flag bit to indicate you want lines to be ended with - * CRLF instead of just LF. - */ - public static final int CRLF = 4; - - /** - * Encoder/decoder flag bit to indicate using the "web safe" - * variant of Base64 (see RFC 3548 section 4) where '-' and '_' - * are used in place of '+' and '/'. - */ - public static final int WEB_SAFE = 8; - - /** - * Flag to pass to Base64OutputStream to indicate that it should - * not close the output stream it is wrapping when it itself is - * closed. - */ - public static final int NO_CLOSE = 16; - - // -------------------------------------------------------- - // decoding - // -------------------------------------------------------- - - /** - * Lookup table for turning bytes into their position in the - * Base64 alphabet. - */ - private static final int DECODE[] = { - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, - 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -2, -1, -1, - -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, - 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, - -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, - 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - }; - - /** - * Decode lookup table for the "web safe" variant (RFC 3548 - * sec. 4) where - and _ replace + and /. - */ - private static final int DECODE_WEBSAFE[] = { - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, - 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -2, -1, -1, - -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, - 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, 63, - -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, - 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - }; - - /** Non-data values in the DECODE arrays. */ - private static final int SKIP = -1; - private static final int EQUALS = -2; - - /** - * Decode the Base64-encoded data in input and return the data in - * a new byte array. - * - * The padding '=' characters at the end are considered optional, but - * if any are present, there must be the correct number of them. - * - * @param input the input String to decode, which is converted to - * bytes using the default charset - * @param flags controls certain features of the decoded output. - * Pass {@code DEFAULT} to decode standard Base64. - * - * @throws IllegalArgumentException if the input contains - * incorrect padding - */ - public static byte[] decode(String str, int flags) { - return decode(str.getBytes(), flags); - } - - /** - * Decode the Base64-encoded data in input and return the data in - * a new byte array. - * - * The padding '=' characters at the end are considered optional, but - * if any are present, there must be the correct number of them. - * - * @param input the input array to decode - * @param flags controls certain features of the decoded output. - * Pass {@code DEFAULT} to decode standard Base64. - * - * @throws IllegalArgumentException if the input contains - * incorrect padding - */ - public static byte[] decode(byte[] input, int flags) { - return decode(input, 0, input.length, flags); - } - - /** - * Decode the Base64-encoded data in input and return the data in - * a new byte array. - * - * The padding '=' characters at the end are considered optional, but - * if any are present, there must be the correct number of them. - * - * @param input the data to decode - * @param offset the position within the input array at which to start - * @param len the number of bytes of input to decode - * @param flags controls certain features of the decoded output. - * Pass {@code DEFAULT} to decode standard Base64. - * - * @throws IllegalArgumentException if the input contains - * incorrect padding - */ - public static byte[] decode(byte[] input, int offset, int len, int flags) { - // Allocate space for the most data the input could represent. - // (It could contain less if it contains whitespace, etc.) - DecoderState state = new DecoderState(flags, new byte[len*3/4]); - - if (!decodeInternal(input, offset, len, state, true)) { - throw new IllegalArgumentException("bad base-64"); - } - - // Maybe we got lucky and allocated exactly enough output space. - if (state.op == state.output.length) { - return state.output; - } - - // Need to shorten the array, so allocate a new one of the - // right size and copy. - byte[] temp = new byte[state.op]; - System.arraycopy(state.output, 0, temp, 0, state.op); - return temp; - } - - /* package */ static class DecoderState { - public byte[] output; - public int op; - - public int state; // state number (0 to 6) - public int value; - - final public int[] alphabet; - - public DecoderState(int flags, byte[] output) { - this.output = output; - - alphabet = ((flags & WEB_SAFE) == 0) ? DECODE : DECODE_WEBSAFE; - state = 0; - value = 0; - } - } - - /** - * Decode another block of input data. - * - * @param dstate a DecoderState object whose (caller-provided) - * output array is big enough to hold all the decoded data. - * On return, dstate.op will be set to the length of the - * decoded data. - * @param finish true if this is the final call to decodeInternal - * with the given DecoderState object. Will finalize the - * decoder state and include any final bytes in the output. - * - * @return true if the state machine is still healthy. false if - * bad base-64 data has been detected in the input stream. - */ - - /* package */ static boolean decodeInternal( - byte[] input, int offset, int len, final DecoderState dstate, boolean finish) { - if (dstate.state == 6) return false; - - int state = dstate.state; - int value = dstate.value; - final int[] decode = dstate.alphabet; - final byte[] output = dstate.output; - int op = 0; - - int p = offset; - len += offset; - - while (p < len) { - - // Try the fast path: we're starting a new tuple and the - // next four bytes of the input stream are all data - // bytes. This corresponds to going through states - // 0-1-2-3-0. We expect to use this method for most of - // the data. - // - // If any of the next four bytes of input are non-data - // (whitespace, etc.), value will end up negative. (All - // the non-data values in decode are small negative - // numbers, so shifting any of them up and or'ing them - // together will result in a value with its top bit set.) - // - // You can remove this whole block and the output should - // be the same, just slower. - if (state == 0 && p+4 <= len && - (value = ((decode[input[p] & 0xff] << 18) | - (decode[input[p+1] & 0xff] << 12) | - (decode[input[p+2] & 0xff] << 6) | - (decode[input[p+3] & 0xff]))) >= 0) { - output[op+2] = (byte) value; - output[op+1] = (byte) (value >> 8); - output[op] = (byte) (value >> 16); - op += 3; - p += 4; - continue; - } - - // The fast path isn't available -- either we've read a - // partial tuple, or the next four input bytes aren't all - // data, or whatever. Fall back to the slower state - // machine implementation. - // - // States 0-3 are reading through the next input tuple. - // State 4 is having read one '=' and expecting exactly - // one more. - // State 5 is expecting no more data or padding characters - // in the input. - // State 6 is the error state; an error has been detected - // in the input and no future input can "fix" it. - - int d = decode[input[p++] & 0xff]; - - switch (state) { - case 0: - if (d >= 0) { - value = d; - ++state; - } else if (d != SKIP) { - dstate.state = 6; - return false; - } - break; - - case 1: - if (d >= 0) { - value = (value << 6) | d; - ++state; - } else if (d != SKIP) { - dstate.state = 6; - return false; - } - break; - - case 2: - if (d >= 0) { - value = (value << 6) | d; - ++state; - } else if (d == EQUALS) { - // Emit the last (partial) output tuple; - // expect exactly one more padding character. - output[op++] = (byte) (value >> 4); - state = 4; - } else if (d != SKIP) { - dstate.state = 6; - return false; - } - break; - - case 3: - if (d >= 0) { - // Emit the output triple and return to state 0. - value = (value << 6) | d; - output[op+2] = (byte) value; - output[op+1] = (byte) (value >> 8); - output[op] = (byte) (value >> 16); - op += 3; - state = 0; - } else if (d == EQUALS) { - // Emit the last (partial) output tuple; - // expect no further data or padding characters. - output[op+1] = (byte) (value >> 2); - output[op] = (byte) (value >> 10); - op += 2; - state = 5; - } else if (d != SKIP) { - dstate.state = 6; - return false; - } - break; - - case 4: - if (d == EQUALS) { - ++state; - } else if (d != SKIP) { - dstate.state = 6; - return false; - } - break; - - case 5: - if (d != SKIP) { - dstate.state = 6; - return false; - } - break; - } - } - - if (!finish) { - // We're out of input, but a future call could provide - // more. Return the output we've produced on this call - // and save the current state of the state machine. - dstate.state = state; - dstate.value = value; - dstate.op = op; - return true; - } - - // Done reading input. Now figure out where we are left in - // the state machine and finish up. - - switch (state) { - case 0: - // Output length is a multiple of three. Fine. - break; - case 1: - // Read one extra input byte, which isn't enough to - // make another output byte. Illegal. - dstate.state = 6; - return false; - case 2: - // Read two extra input bytes, enough to emit 1 more - // output byte. Fine. - output[op++] = (byte) (value >> 4); - break; - case 3: - // Read three extra input bytes, enough to emit 2 more - // output bytes. Fine. - output[op+1] = (byte) (value >> 2); - output[op] = (byte) (value >> 10); - op += 2; - break; - case 4: - // Read one padding '=' when we expected 2. Illegal. - dstate.state = 6; - return false; - case 5: - // Read all the padding '='s we expected and no more. - // Fine. - break; - } - - dstate.op = op; - return true; - } - - // -------------------------------------------------------- - // encoding - // -------------------------------------------------------- - - /** - * Emit a new line every this many output tuples. Corresponds to - * a 76-character line length (the maximum allowable according to - * RFC 2045). - */ - private static final int LINE_GROUPS = 19; - - /** - * Lookup table for turning Base64 alphabet positions (6 bits) - * into output bytes. - */ - private static final byte ENCODE[] = { - 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', - 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', - 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', - 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', - 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', - 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', - 'w', 'x', 'y', 'z', '0', '1', '2', '3', - '4', '5', '6', '7', '8', '9', '+', '/', - }; - - /** - * Lookup table for turning Base64 alphabet positions (6 bits) - * into output bytes. - */ - private static final byte ENCODE_WEBSAFE[] = { - 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', - 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', - 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', - 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', - 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', - 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', - 'w', 'x', 'y', 'z', '0', '1', '2', '3', - '4', '5', '6', '7', '8', '9', '-', '_', - }; - - /** - * Base64-encode the given data and return a newly allocated - * String with the result. - * - * @param input the data to encode - * @param flags controls certain features of the encoded output. - * Passing {@code DEFAULT} results in output that - * adheres to RFC 2045. - */ - public static String encodeToString(byte[] input, int flags) { - return new String(encode(input, flags)); - } - - /** - * Base64-encode the given data and return a newly allocated - * String with the result. - * - * @param input the data to encode - * @param offset the position within the input array at which to - * start - * @param len the number of bytes of input to encode - * @param flags controls certain features of the encoded output. - * Passing {@code DEFAULT} results in output that - * adheres to RFC 2045. - */ - public static String encodeToString(byte[] input, int offset, int len, int flags) { - return new String(encode(input, offset, len, flags)); - } - - /** - * Base64-encode the given data and return a newly allocated - * byte[] with the result. - * - * @param input the data to encode - * @param flags controls certain features of the encoded output. - * Passing {@code DEFAULT} results in output that - * adheres to RFC 2045. - */ - public static byte[] encode(byte[] input, int flags) { - return encode(input, 0, input.length, flags); - } - - /** - * Base64-encode the given data and return a newly allocated - * byte[] with the result. - * - * @param input the data to encode - * @param offset the position within the input array at which to - * start - * @param len the number of bytes of input to encode - * @param flags controls certain features of the encoded output. - * Passing {@code DEFAULT} results in output that - * adheres to RFC 2045. - */ - public static byte[] encode(byte[] input, int offset, int len, int flags) { - EncoderState state = new EncoderState(flags, null); - - // Compute the exact length of the array we will produce. - int output_len = len / 3 * 4; - - // Account for the tail of the data and the padding bytes, if any. - if (state.do_padding) { - if (len % 3 > 0) { - output_len += 4; - } - } else { - switch (len % 3) { - case 0: break; - case 1: output_len += 2; break; - case 2: output_len += 3; break; - } - } - - // Account for the newlines, if any. - if (state.do_newline && len > 0) { - output_len += (((len-1) / (3 * LINE_GROUPS)) + 1) * (state.do_cr ? 2 : 1); - } - - state.output = new byte[output_len]; - encodeInternal(input, offset, len, state, true); - - assert state.op == output_len; - - return state.output; - } - - /* package */ static class EncoderState { - public byte[] output; - public int op; - - final public byte[] tail; - public int tailLen; - public int count; - - final public boolean do_padding; - final public boolean do_newline; - final public boolean do_cr; - final public byte[] alphabet; - - public EncoderState(int flags, byte[] output) { - this.output = output; - - do_padding = (flags & NO_PADDING) == 0; - do_newline = (flags & NO_WRAP) == 0; - do_cr = (flags & CRLF) != 0; - alphabet = ((flags & WEB_SAFE) == 0) ? ENCODE : ENCODE_WEBSAFE; - - tail = new byte[2]; - tailLen = 0; - - count = do_newline ? LINE_GROUPS : -1; - } - } - - /** - * Encode another block of input data. - * - * @param estate an EncoderState object whose (caller-provided) - * output array is big enough to hold all the encoded data. - * On return, estate.op will be set to the length of the - * encoded data. - * @param finish true if this is the final call to encodeInternal - * with the given EncoderState object. Will finalize the - * encoder state and include any final bytes in the output. - */ - static void encodeInternal(byte[] input, int offset, int len, - final EncoderState estate, boolean finish) { - final boolean do_cr = estate.do_cr; - final boolean do_newline = estate.do_newline; - final boolean do_padding = estate.do_padding; - final byte[] output = estate.output; - - int op = 0; - - int p = offset; - len += offset; - int v = -1; - int count = estate.count; - - // First we need to concatenate the tail of the previous call - // with any input bytes available now and see if we can empty - // the tail. - - switch (estate.tailLen) { - case 0: - // There was no tail. - break; - - case 1: - if (p+2 <= len) { - // A 1-byte tail with at least 2 bytes of - // input available now. - v = ((estate.tail[0] & 0xff) << 16) | - ((input[p++] & 0xff) << 8) | - (input[p++] & 0xff); - estate.tailLen = 0; - }; - break; - - case 2: - if (p+1 <= len) { - // A 2-byte tail with at least 1 byte of input. - v = ((estate.tail[0] & 0xff) << 16) | - ((estate.tail[1] & 0xff) << 8) | - (input[p++] & 0xff); - estate.tailLen = 0; - } - break; - } - - if (v != -1) { - output[op++] = estate.alphabet[(v >> 18) & 0x3f]; - output[op++] = estate.alphabet[(v >> 12) & 0x3f]; - output[op++] = estate.alphabet[(v >> 6) & 0x3f]; - output[op++] = estate.alphabet[v & 0x3f]; - if (--count == 0) { - if (do_cr) output[op++] = '\r'; - output[op++] = '\n'; - count = LINE_GROUPS; - } - } - - // At this point either there is no tail, or there are fewer - // than 3 bytes of input available. - - // The main loop, turning 3 input bytes into 4 output bytes on - // each iteration. - while (p+3 <= len) { - v = ((input[p++] & 0xff) << 16) | - ((input[p++] & 0xff) << 8) | - (input[p++] & 0xff); - output[op++] = estate.alphabet[(v >> 18) & 0x3f]; - output[op++] = estate.alphabet[(v >> 12) & 0x3f]; - output[op++] = estate.alphabet[(v >> 6) & 0x3f]; - output[op++] = estate.alphabet[v & 0x3f]; - if (--count == 0) { - if (do_cr) output[op++] = '\r'; - output[op++] = '\n'; - count = LINE_GROUPS; - } - } - - if (finish) { - // Finish up the tail of the input. Note that we need to - // consume any bytes in estate.tail before any bytes - // remaining in input; there should be at most two bytes - // total. - - if (p-estate.tailLen == len-1) { - int t = 0; - v = ((estate.tailLen > 0 ? estate.tail[t++] : input[p++]) & 0xff) << 4; - estate.tailLen -= t; - output[op++] = estate.alphabet[(v >> 6) & 0x3f]; - output[op++] = estate.alphabet[v & 0x3f]; - if (do_padding) { - output[op++] = '='; - output[op++] = '='; - } - if (do_newline) { - if (do_cr) output[op++] = '\r'; - output[op++] = '\n'; - } - } else if (p-estate.tailLen == len-2) { - int t = 0; - v = (((estate.tailLen > 1 ? estate.tail[t++] : input[p++]) & 0xff) << 10) | - (((estate.tailLen > 0 ? estate.tail[t++] : input[p++]) & 0xff) << 2); - estate.tailLen -= t; - output[op++] = estate.alphabet[(v >> 12) & 0x3f]; - output[op++] = estate.alphabet[(v >> 6) & 0x3f]; - output[op++] = estate.alphabet[v & 0x3f]; - if (do_padding) { - output[op++] = '='; - } - if (do_newline) { - if (do_cr) output[op++] = '\r'; - output[op++] = '\n'; - } - } else if (do_newline && op > 0 && count != LINE_GROUPS) { - if (do_cr) output[op++] = '\r'; - output[op++] = '\n'; - } - - assert estate.tailLen == 0; - assert p == len; - } else { - // Save the leftovers in tail to be consumed on the next - // call to encodeInternal. - - if (p == len-1) { - estate.tail[estate.tailLen++] = input[p]; - } else if (p == len-2) { - estate.tail[estate.tailLen++] = input[p]; - estate.tail[estate.tailLen++] = input[p+1]; - } - } - - estate.op = op; - estate.count = count; - } - - private Base64() { } // don't instantiate -} diff --git a/common/java/com/android/common/Base64InputStream.java b/common/java/com/android/common/Base64InputStream.java deleted file mode 100644 index 1969bc4..0000000 --- a/common/java/com/android/common/Base64InputStream.java +++ /dev/null @@ -1,169 +0,0 @@ -/* - * Copyright (C) 2010 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 com.android.common; - -import java.io.FilterInputStream; -import java.io.IOException; -import java.io.InputStream; - -/** - * An OutputStream that does either Base64 encoding or decoding on the - * data written to it, writing the resulting data to another - * OutputStream. - */ -public class Base64InputStream extends FilterInputStream { - private final boolean encode; - private final Base64.EncoderState estate; - private final Base64.DecoderState dstate; - - private static byte[] EMPTY = new byte[0]; - - private static final int BUFFER_SIZE = 2048; - private boolean eof; - private byte[] inputBuffer; - private byte[] outputBuffer; - private int outputStart; - private int outputEnd; - - /** - * An InputStream that performs Base64 decoding on the data read - * from the wrapped stream. - * - * @param in the InputStream to read the source data from - * @param flags bit flags for controlling the decoder; see the - * constants in {@link Base64} - */ - public Base64InputStream(InputStream out, int flags) { - this(out, flags, false); - } - - /** - * Performs Base64 encoding or decoding on the data read from the - * wrapped InputStream. - * - * @param in the InputStream to read the source data from - * @param flags bit flags for controlling the decoder; see the - * constants in {@link Base64} - * @param encode true to encode, false to decode - */ - public Base64InputStream(InputStream out, int flags, boolean encode) { - super(out); - this.encode = encode; - eof = false; - inputBuffer = new byte[BUFFER_SIZE]; - if (encode) { - // len*8/5+10 is an overestimate of the most bytes the - // encoder can produce for len bytes of input. - outputBuffer = new byte[BUFFER_SIZE * 8/5 + 10]; - estate = new Base64.EncoderState(flags, outputBuffer); - dstate = null; - } else { - // len*3/4+10 is an overestimate of the most bytes the - // decoder can produce for len bytes of input. - outputBuffer = new byte[BUFFER_SIZE * 3/4 + 10]; - estate = null; - dstate = new Base64.DecoderState(flags, outputBuffer); - } - outputStart = 0; - outputEnd = 0; - } - - public boolean markSupported() { - return false; - } - - public void mark(int readlimit) { - throw new UnsupportedOperationException(); - } - - public void reset() { - throw new UnsupportedOperationException(); - } - - public void close() throws IOException { - in.close(); - inputBuffer = null; - } - - public int available() { - return outputEnd - outputStart; - } - - public long skip(long n) throws IOException { - if (outputStart >= outputEnd) { - refill(); - } - if (outputStart >= outputEnd) { - return 0; - } - long bytes = Math.min(n, outputEnd-outputStart); - outputStart += bytes; - return bytes; - } - - public int read() throws IOException { - if (outputStart >= outputEnd) { - refill(); - } - if (outputStart >= outputEnd) { - return -1; - } else { - return outputBuffer[outputStart++]; - } - } - - public int read(byte[] b, int off, int len) throws IOException { - if (outputStart >= outputEnd) { - refill(); - } - if (outputStart >= outputEnd) { - return -1; - } - int bytes = Math.min(len, outputEnd-outputStart); - System.arraycopy(outputBuffer, outputStart, b, off, bytes); - outputStart += bytes; - return bytes; - } - - /** - * Read data from the input stream into inputBuffer, then - * decode/encode it into the empty outputBuffer, and reset the - * outputStart and outputEnd pointers. - */ - private void refill() throws IOException { - if (eof) return; - int bytesRead = in.read(inputBuffer); - if (encode) { - if (bytesRead == -1) { - eof = true; - Base64.encodeInternal(EMPTY, 0, 0, estate, true); - } else { - Base64.encodeInternal(inputBuffer, 0, bytesRead, estate, false); - } - outputEnd = estate.op; - } else { - if (bytesRead == -1) { - eof = true; - Base64.decodeInternal(EMPTY, 0, 0, dstate, true); - } else { - Base64.decodeInternal(inputBuffer, 0, bytesRead, dstate, false); - } - outputEnd = dstate.op; - } - outputStart = 0; - } -} diff --git a/common/java/com/android/common/Base64OutputStream.java b/common/java/com/android/common/Base64OutputStream.java deleted file mode 100644 index 76e1b6a..0000000 --- a/common/java/com/android/common/Base64OutputStream.java +++ /dev/null @@ -1,153 +0,0 @@ -/* - * Copyright (C) 2010 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 com.android.common; - -import java.io.FilterOutputStream; -import java.io.IOException; -import java.io.OutputStream; - -/** - * An OutputStream that does either Base64 encoding or decoding on the - * data written to it, writing the resulting data to another - * OutputStream. - */ -public class Base64OutputStream extends FilterOutputStream { - private final boolean encode; - private final Base64.EncoderState estate; - private final Base64.DecoderState dstate; - private final int flags; - - private byte[] buffer = null; - private int bpos = 0; - - private static byte[] EMPTY = new byte[0]; - - /** - * Performs Base64 encoding on the data written to the stream, - * writing the encoded data to another OutputStream. - * - * @param out the OutputStream to write the encoded data to - * @param flags bit flags for controlling the encoder; see the - * constants in {@link Base64} - */ - public Base64OutputStream(OutputStream out, int flags) { - this(out, flags, true); - } - - /** - * Performs Base64 encoding or decoding on the data written to the - * stream, writing the encoded/decoded data to another - * OutputStream. - * - * @param out the OutputStream to write the encoded data to - * @param flags bit flags for controlling the encoder; see the - * constants in {@link Base64} - * @param encode true to encode, false to decode - */ - public Base64OutputStream(OutputStream out, int flags, boolean encode) { - super(out); - this.flags = flags; - this.encode = encode; - if (encode) { - estate = new Base64.EncoderState(flags, null); - dstate = null; - } else { - estate = null; - dstate = new Base64.DecoderState(flags, null); - } - } - - public void write(int b) throws IOException { - // To avoid invoking the encoder/decoder routines for single - // bytes, we buffer up calls to write(int) in an internal - // byte array to transform them into writes of decently-sized - // arrays. - - if (buffer == null) { - buffer = new byte[1024]; - } - if (bpos >= buffer.length) { - // internal buffer full; write it out. - internalWrite(buffer, 0, bpos, false); - bpos = 0; - } - buffer[bpos++] = (byte) b; - } - - /** - * Flush any buffered data from calls to write(int). Needed - * before doing a write(byte[], int, int) or a close(). - */ - private void flushBuffer() throws IOException { - if (bpos > 0) { - internalWrite(buffer, 0, bpos, false); - bpos = 0; - } - } - - public void write(byte[] b, int off, int len) throws IOException { - if (len <= 0) return; - flushBuffer(); - internalWrite(b, off, len, false); - } - - public void close() throws IOException { - flushBuffer(); - internalWrite(EMPTY, 0, 0, true); - if ((flags & Base64.NO_CLOSE) == 0) { - out.close(); - } else { - out.flush(); - } - } - - /** - * Write the given bytes to the encoder/decoder. - * - * @param finish true if this is the last batch of input, to cause - * encoder/decoder state to be finalized. - */ - private void internalWrite(byte[] b, int off, int len, boolean finish) throws IOException { - if (encode) { - // len*8/5+10 is an overestimate of the most bytes the - // encoder can produce for len bytes of input. - estate.output = embiggen(estate.output, len*8/5+10); - Base64.encodeInternal(b, off, len, estate, finish); - out.write(estate.output, 0, estate.op); - } else { - // len*3/4+10 is an overestimate of the most bytes the - // decoder can produce for len bytes of input. - dstate.output = embiggen(dstate.output, len*3/4+10); - if (!Base64.decodeInternal(b, off, len, dstate, finish)) { - throw new IOException("bad base-64"); - } - out.write(dstate.output, 0, dstate.op); - } - } - - /** - * If b.length is at least len, return b. Otherwise return a new - * byte array of length len. - */ - private byte[] embiggen(byte[] b, int len) { - if (b == null || b.length < len) { - return new byte[len]; - } else { - return b; - } - } -} diff --git a/common/tests/src/com/android/common/Base64Test.java b/common/tests/src/com/android/common/Base64Test.java deleted file mode 100644 index 1064625f2..0000000 --- a/common/tests/src/com/android/common/Base64Test.java +++ /dev/null @@ -1,520 +0,0 @@ -/* - * Copyright (C) 2010 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 com.android.common; - -import junit.framework.TestCase; - -import java.io.ByteArrayInputStream; -import java.io.ByteArrayOutputStream; -import java.util.Random; - -public class Base64Test extends TestCase { - private static final String TAG = "B64Test"; - - /** Decodes a string, returning a string. */ - private String decodeString(String in) throws Exception { - byte[] out = Base64.decode(in, 0); - return new String(out); - } - - /** - * Encodes the string 'in' using 'flags'. Asserts that decoding - * gives the same string. Returns the encoded string. - */ - private String encodeToString(String in, int flags) throws Exception { - String b64 = Base64.encodeToString(in.getBytes(), flags); - String dec = decodeString(b64); - assertEquals(in, dec); - return b64; - } - - /** Assert that decoding 'in' throws IllegalArgumentException. */ - private void assertBad(String in) throws Exception { - try { - byte[] out = Base64.decode(in, 0); - fail("should have failed to decode"); - } catch (IllegalArgumentException e) { - } - } - - /** Assert that actual equals the first len bytes of expected. */ - private void assertEquals(byte[] expected, int len, byte[] actual) { - assertEquals(len, actual.length); - for (int i = 0; i < len; ++i) { - assertEquals(expected[i], actual[i]); - } - } - - /** Assert that actual equals the first len bytes of expected. */ - private void assertEquals(byte[] expected, int len, byte[] actual, int alen) { - assertEquals(len, alen); - for (int i = 0; i < len; ++i) { - assertEquals(expected[i], actual[i]); - } - } - - /** Assert that actual equals the first len bytes of expected. */ - private void assertEquals(byte[] expected, byte[] actual) { - assertEquals(expected.length, actual.length); - for (int i = 0; i < expected.length; ++i) { - assertEquals(expected[i], actual[i]); - } - } - - public void testDecodeExtraChars() throws Exception { - // padding 0 - assertEquals("hello, world", decodeString("aGVsbG8sIHdvcmxk")); - assertBad("aGVsbG8sIHdvcmxk="); - assertBad("aGVsbG8sIHdvcmxk=="); - assertBad("aGVsbG8sIHdvcmxk ="); - assertBad("aGVsbG8sIHdvcmxk = = "); - assertEquals("hello, world", decodeString(" aGVs bG8s IHdv cmxk ")); - assertEquals("hello, world", decodeString(" aGV sbG8 sIHd vcmx k ")); - assertEquals("hello, world", decodeString(" aG VsbG 8sIH dvcm xk ")); - assertEquals("hello, world", decodeString(" a GVsb G8sI Hdvc mxk ")); - assertEquals("hello, world", decodeString(" a G V s b G 8 s I H d v c m x k ")); - assertEquals("hello, world", decodeString("_a*G_V*s_b*G_8*s_I*H_d*v_c*m_x*k_")); - assertEquals("hello, world", decodeString("aGVsbG8sIHdvcmxk")); - - // padding 1 - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPyE=")); - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPyE")); - assertBad("aGVsbG8sIHdvcmxkPyE=="); - assertBad("aGVsbG8sIHdvcmxkPyE =="); - assertBad("aGVsbG8sIHdvcmxkPyE = = "); - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPy E=")); - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPy E")); - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPy E =")); - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPy E ")); - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPy E = ")); - assertEquals("hello, world?!", decodeString("aGVsbG8sIHdvcmxkPy E ")); - - // padding 2 - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkLg==")); - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkLg")); - assertBad("aGVsbG8sIHdvcmxkLg="); - assertBad("aGVsbG8sIHdvcmxkLg ="); - assertBad("aGVsbG8sIHdvcmxkLg = "); - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkL g==")); - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkL g")); - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkL g ==")); - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkL g ")); - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkL g = = ")); - assertEquals("hello, world.", decodeString("aGVsbG8sIHdvcmxkL g ")); - } - - private static final byte[] BYTES = { (byte) 0xff, (byte) 0xee, (byte) 0xdd, - (byte) 0xcc, (byte) 0xbb, (byte) 0xaa, - (byte) 0x99, (byte) 0x88, (byte) 0x77 }; - - public void testBinaryDecode() throws Exception { - assertEquals(BYTES, 0, Base64.decode("", 0)); - assertEquals(BYTES, 1, Base64.decode("/w==", 0)); - assertEquals(BYTES, 2, Base64.decode("/+4=", 0)); - assertEquals(BYTES, 3, Base64.decode("/+7d", 0)); - assertEquals(BYTES, 4, Base64.decode("/+7dzA==", 0)); - assertEquals(BYTES, 5, Base64.decode("/+7dzLs=", 0)); - assertEquals(BYTES, 6, Base64.decode("/+7dzLuq", 0)); - assertEquals(BYTES, 7, Base64.decode("/+7dzLuqmQ==", 0)); - assertEquals(BYTES, 8, Base64.decode("/+7dzLuqmYg=", 0)); - } - - public void testWebSafe() throws Exception { - assertEquals(BYTES, 0, Base64.decode("", Base64.WEB_SAFE)); - assertEquals(BYTES, 1, Base64.decode("_w==", Base64.WEB_SAFE)); - assertEquals(BYTES, 2, Base64.decode("_-4=", Base64.WEB_SAFE)); - assertEquals(BYTES, 3, Base64.decode("_-7d", Base64.WEB_SAFE)); - assertEquals(BYTES, 4, Base64.decode("_-7dzA==", Base64.WEB_SAFE)); - assertEquals(BYTES, 5, Base64.decode("_-7dzLs=", Base64.WEB_SAFE)); - assertEquals(BYTES, 6, Base64.decode("_-7dzLuq", Base64.WEB_SAFE)); - assertEquals(BYTES, 7, Base64.decode("_-7dzLuqmQ==", Base64.WEB_SAFE)); - assertEquals(BYTES, 8, Base64.decode("_-7dzLuqmYg=", Base64.WEB_SAFE)); - - assertEquals("", Base64.encodeToString(BYTES, 0, 0, Base64.WEB_SAFE)); - assertEquals("_w==\n", Base64.encodeToString(BYTES, 0, 1, Base64.WEB_SAFE)); - assertEquals("_-4=\n", Base64.encodeToString(BYTES, 0, 2, Base64.WEB_SAFE)); - assertEquals("_-7d\n", Base64.encodeToString(BYTES, 0, 3, Base64.WEB_SAFE)); - assertEquals("_-7dzA==\n", Base64.encodeToString(BYTES, 0, 4, Base64.WEB_SAFE)); - assertEquals("_-7dzLs=\n", Base64.encodeToString(BYTES, 0, 5, Base64.WEB_SAFE)); - assertEquals("_-7dzLuq\n", Base64.encodeToString(BYTES, 0, 6, Base64.WEB_SAFE)); - assertEquals("_-7dzLuqmQ==\n", Base64.encodeToString(BYTES, 0, 7, Base64.WEB_SAFE)); - assertEquals("_-7dzLuqmYg=\n", Base64.encodeToString(BYTES, 0, 8, Base64.WEB_SAFE)); - } - - public void testFlags() throws Exception { - assertEquals("YQ==\n", encodeToString("a", 0)); - assertEquals("YQ==", encodeToString("a", Base64.NO_WRAP)); - assertEquals("YQ\n", encodeToString("a", Base64.NO_PADDING)); - assertEquals("YQ", encodeToString("a", Base64.NO_PADDING | Base64.NO_WRAP)); - assertEquals("YQ==\r\n", encodeToString("a", Base64.CRLF)); - assertEquals("YQ\r\n", encodeToString("a", Base64.CRLF | Base64.NO_PADDING)); - - assertEquals("YWI=\n", encodeToString("ab", 0)); - assertEquals("YWI=", encodeToString("ab", Base64.NO_WRAP)); - assertEquals("YWI\n", encodeToString("ab", Base64.NO_PADDING)); - assertEquals("YWI", encodeToString("ab", Base64.NO_PADDING | Base64.NO_WRAP)); - assertEquals("YWI=\r\n", encodeToString("ab", Base64.CRLF)); - assertEquals("YWI\r\n", encodeToString("ab", Base64.CRLF | Base64.NO_PADDING)); - - assertEquals("YWJj\n", encodeToString("abc", 0)); - assertEquals("YWJj", encodeToString("abc", Base64.NO_WRAP)); - assertEquals("YWJj\n", encodeToString("abc", Base64.NO_PADDING)); - assertEquals("YWJj", encodeToString("abc", Base64.NO_PADDING | Base64.NO_WRAP)); - assertEquals("YWJj\r\n", encodeToString("abc", Base64.CRLF)); - assertEquals("YWJj\r\n", encodeToString("abc", Base64.CRLF | Base64.NO_PADDING)); - - assertEquals("YWJjZA==\n", encodeToString("abcd", 0)); - assertEquals("YWJjZA==", encodeToString("abcd", Base64.NO_WRAP)); - assertEquals("YWJjZA\n", encodeToString("abcd", Base64.NO_PADDING)); - assertEquals("YWJjZA", encodeToString("abcd", Base64.NO_PADDING | Base64.NO_WRAP)); - assertEquals("YWJjZA==\r\n", encodeToString("abcd", Base64.CRLF)); - assertEquals("YWJjZA\r\n", encodeToString("abcd", Base64.CRLF | Base64.NO_PADDING)); - } - - public void testLineLength() throws Exception { - String in_56 = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcd"; - String in_57 = in_56 + "e"; - String in_58 = in_56 + "ef"; - String in_59 = in_56 + "efg"; - String in_60 = in_56 + "efgh"; - String in_61 = in_56 + "efghi"; - - String prefix = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXphYmNkZWZnaGlqa2xtbm9wcXJzdHV2d3h5emFi"; - String out_56 = prefix + "Y2Q=\n"; - String out_57 = prefix + "Y2Rl\n"; - String out_58 = prefix + "Y2Rl\nZg==\n"; - String out_59 = prefix + "Y2Rl\nZmc=\n"; - String out_60 = prefix + "Y2Rl\nZmdo\n"; - String out_61 = prefix + "Y2Rl\nZmdoaQ==\n"; - - // no newline for an empty input array. - assertEquals("", encodeToString("", 0)); - - assertEquals(out_56, encodeToString(in_56, 0)); - assertEquals(out_57, encodeToString(in_57, 0)); - assertEquals(out_58, encodeToString(in_58, 0)); - assertEquals(out_59, encodeToString(in_59, 0)); - assertEquals(out_60, encodeToString(in_60, 0)); - assertEquals(out_61, encodeToString(in_61, 0)); - - assertEquals(out_56.replaceAll("=", ""), encodeToString(in_56, Base64.NO_PADDING)); - assertEquals(out_57.replaceAll("=", ""), encodeToString(in_57, Base64.NO_PADDING)); - assertEquals(out_58.replaceAll("=", ""), encodeToString(in_58, Base64.NO_PADDING)); - assertEquals(out_59.replaceAll("=", ""), encodeToString(in_59, Base64.NO_PADDING)); - assertEquals(out_60.replaceAll("=", ""), encodeToString(in_60, Base64.NO_PADDING)); - assertEquals(out_61.replaceAll("=", ""), encodeToString(in_61, Base64.NO_PADDING)); - - assertEquals(out_56.replaceAll("\n", ""), encodeToString(in_56, Base64.NO_WRAP)); - assertEquals(out_57.replaceAll("\n", ""), encodeToString(in_57, Base64.NO_WRAP)); - assertEquals(out_58.replaceAll("\n", ""), encodeToString(in_58, Base64.NO_WRAP)); - assertEquals(out_59.replaceAll("\n", ""), encodeToString(in_59, Base64.NO_WRAP)); - assertEquals(out_60.replaceAll("\n", ""), encodeToString(in_60, Base64.NO_WRAP)); - assertEquals(out_61.replaceAll("\n", ""), encodeToString(in_61, Base64.NO_WRAP)); - } - - /** - * Tests that Base64.encodeInternal does correct handling of the - * tail for each call. - * - * This test is disabled because while it passes if you can get it - * to run, android's test infrastructure currently doesn't allow - * us to get at package-private members (Base64.EncoderState in - * this case). - */ - public void XXXtestEncodeInternal() throws Exception { - byte[] input = { (byte) 0x61, (byte) 0x62, (byte) 0x63 }; - byte[] output = new byte[100]; - - Base64.EncoderState state = new Base64.EncoderState(Base64.NO_PADDING | Base64.NO_WRAP, - output); - - Base64.encodeInternal(input, 0, 3, state, false); - assertEquals("YWJj".getBytes(), 4, state.output, state.op); - assertEquals(0, state.tailLen); - - Base64.encodeInternal(input, 0, 3, state, false); - assertEquals("YWJj".getBytes(), 4, state.output, state.op); - assertEquals(0, state.tailLen); - - Base64.encodeInternal(input, 0, 1, state, false); - assertEquals(0, state.op); - assertEquals(1, state.tailLen); - - Base64.encodeInternal(input, 0, 1, state, false); - assertEquals(0, state.op); - assertEquals(2, state.tailLen); - - Base64.encodeInternal(input, 0, 1, state, false); - assertEquals("YWFh".getBytes(), 4, state.output, state.op); - assertEquals(0, state.tailLen); - - Base64.encodeInternal(input, 0, 2, state, false); - assertEquals(0, state.op); - assertEquals(2, state.tailLen); - - Base64.encodeInternal(input, 0, 2, state, false); - assertEquals("YWJh".getBytes(), 4, state.output, state.op); - assertEquals(1, state.tailLen); - - Base64.encodeInternal(input, 0, 2, state, false); - assertEquals("YmFi".getBytes(), 4, state.output, state.op); - assertEquals(0, state.tailLen); - - Base64.encodeInternal(input, 0, 1, state, true); - assertEquals("YQ".getBytes(), 2, state.output, state.op); - } - - private static final String lipsum = - "Lorem ipsum dolor sit amet, consectetur adipiscing elit. " + - "Quisque congue eleifend odio, eu ornare nulla facilisis eget. " + - "Integer eget elit diam, sit amet laoreet nibh. Quisque enim " + - "urna, pharetra vitae consequat eget, adipiscing eu ante. " + - "Aliquam venenatis arcu nec nibh imperdiet tempor. In id dui " + - "eget lorem aliquam rutrum vel vitae eros. In placerat ornare " + - "pretium. Curabitur non fringilla mi. Fusce ultricies, turpis " + - "eu ultrices suscipit, ligula nisi consectetur eros, dapibus " + - "aliquet dui sapien a turpis. Donec ultricies varius ligula, " + - "ut hendrerit arcu malesuada at. Praesent sed elit pretium " + - "eros luctus gravida. In ac dolor lorem. Cras condimentum " + - "convallis elementum. Phasellus vel felis in nulla ultrices " + - "venenatis. Nam non tortor non orci convallis convallis. " + - "Nam tristique lacinia hendrerit. Pellentesque habitant morbi " + - "tristique senectus et netus et malesuada fames ac turpis " + - "egestas. Vivamus cursus, nibh eu imperdiet porta, magna " + - "ipsum mollis mauris, sit amet fringilla mi nisl eu mi. " + - "Phasellus posuere, leo at ultricies vehicula, massa risus " + - "volutpat sapien, eu tincidunt diam ipsum eget nulla. Cras " + - "molestie dapibus commodo. Ut vel tellus at massa gravida " + - "semper non sed orci."; - - public void testInputStream() throws Exception { - int[] flagses = { Base64.DEFAULT, - Base64.NO_PADDING, - Base64.NO_WRAP, - Base64.NO_PADDING | Base64.NO_WRAP, - Base64.CRLF, - Base64.WEB_SAFE }; - int[] writeLengths = { -10, -5, -1, 0, 1, 1, 2, 2, 3, 10, 100 }; - Random rng = new Random(32176L); - - // Test input needs to be at least 2048 bytes to fill up the - // read buffer of Base64InputStream. - byte[] plain = (lipsum + lipsum + lipsum + lipsum + lipsum).getBytes(); - - for (int flags: flagses) { - byte[] encoded = Base64.encode(plain, flags); - - ByteArrayInputStream bais; - Base64InputStream b64is; - byte[] actual = new byte[plain.length * 2]; - int ap; - int b; - - // ----- test decoding ("encoded" -> "plain") ----- - - // read as much as it will give us in one chunk - bais = new ByteArrayInputStream(encoded); - b64is = new Base64InputStream(bais, flags); - ap = 0; - while ((b = b64is.read(actual, ap, actual.length-ap)) != -1) { - ap += b; - } - assertEquals(actual, ap, plain); - - // read individual bytes - bais = new ByteArrayInputStream(encoded); - b64is = new Base64InputStream(bais, flags); - ap = 0; - while ((b = b64is.read()) != -1) { - actual[ap++] = (byte) b; - } - assertEquals(actual, ap, plain); - - // mix reads of variously-sized arrays with one-byte reads - bais = new ByteArrayInputStream(encoded); - b64is = new Base64InputStream(bais, flags); - ap = 0; - readloop: while (true) { - int l = writeLengths[rng.nextInt(writeLengths.length)]; - if (l >= 0) { - b = b64is.read(actual, ap, l); - if (b == -1) break readloop; - ap += b; - } else { - for (int i = 0; i < -l; ++i) { - if ((b = b64is.read()) == -1) break readloop; - actual[ap++] = (byte) b; - } - } - } - assertEquals(actual, ap, plain); - - // ----- test encoding ("plain" -> "encoded") ----- - - // read as much as it will give us in one chunk - bais = new ByteArrayInputStream(plain); - b64is = new Base64InputStream(bais, flags, true); - ap = 0; - while ((b = b64is.read(actual, ap, actual.length-ap)) != -1) { - ap += b; - } - assertEquals(actual, ap, encoded); - - // read individual bytes - bais = new ByteArrayInputStream(plain); - b64is = new Base64InputStream(bais, flags, true); - ap = 0; - while ((b = b64is.read()) != -1) { - actual[ap++] = (byte) b; - } - assertEquals(actual, ap, encoded); - - // mix reads of variously-sized arrays with one-byte reads - bais = new ByteArrayInputStream(plain); - b64is = new Base64InputStream(bais, flags, true); - ap = 0; - readloop: while (true) { - int l = writeLengths[rng.nextInt(writeLengths.length)]; - if (l >= 0) { - b = b64is.read(actual, ap, l); - if (b == -1) break readloop; - ap += b; - } else { - for (int i = 0; i < -l; ++i) { - if ((b = b64is.read()) == -1) break readloop; - actual[ap++] = (byte) b; - } - } - } - assertEquals(actual, ap, encoded); - } - } - - /** - * Tests that Base64OutputStream produces exactly the same results - * as calling Base64.encode/.decode on an in-memory array. - */ - public void testOutputStream() throws Exception { - int[] flagses = { Base64.DEFAULT, - Base64.NO_PADDING, - Base64.NO_WRAP, - Base64.NO_PADDING | Base64.NO_WRAP, - Base64.CRLF, - Base64.WEB_SAFE }; - int[] writeLengths = { -10, -5, -1, 0, 1, 1, 2, 2, 3, 10, 100 }; - Random rng = new Random(32176L); - - // Test input needs to be at least 1024 bytes to test filling - // up the write(int) buffer of Base64OutputStream. - byte[] plain = (lipsum + lipsum).getBytes(); - - for (int flags: flagses) { - byte[] encoded = Base64.encode(plain, flags); - - ByteArrayOutputStream baos; - Base64OutputStream b64os; - byte[] actual; - int p; - - // ----- test encoding ("plain" -> "encoded") ----- - - // one large write(byte[]) of the whole input - baos = new ByteArrayOutputStream(); - b64os = new Base64OutputStream(baos, flags); - b64os.write(plain); - b64os.close(); - actual = baos.toByteArray(); - assertEquals(encoded, actual); - - // many calls to write(int) - baos = new ByteArrayOutputStream(); - b64os = new Base64OutputStream(baos, flags); - for (int i = 0; i < plain.length; ++i) { - b64os.write(plain[i]); - } - b64os.close(); - actual = baos.toByteArray(); - assertEquals(encoded, actual); - - // intermixed sequences of write(int) with - // write(byte[],int,int) of various lengths. - baos = new ByteArrayOutputStream(); - b64os = new Base64OutputStream(baos, flags); - p = 0; - while (p < plain.length) { - int l = writeLengths[rng.nextInt(writeLengths.length)]; - l = Math.min(l, plain.length-p); - if (l >= 0) { - b64os.write(plain, p, l); - p += l; - } else { - l = Math.min(-l, plain.length-p); - for (int i = 0; i < l; ++i) { - b64os.write(plain[p+i]); - } - p += l; - } - } - b64os.close(); - actual = baos.toByteArray(); - assertEquals(encoded, actual); - - // ----- test decoding ("encoded" -> "plain") ----- - - // one large write(byte[]) of the whole input - baos = new ByteArrayOutputStream(); - b64os = new Base64OutputStream(baos, flags, false); - b64os.write(encoded); - b64os.close(); - actual = baos.toByteArray(); - assertEquals(plain, actual); - - // many calls to write(int) - baos = new ByteArrayOutputStream(); - b64os = new Base64OutputStream(baos, flags, false); - for (int i = 0; i < encoded.length; ++i) { - b64os.write(encoded[i]); - } - b64os.close(); - actual = baos.toByteArray(); - assertEquals(plain, actual); - - // intermixed sequences of write(int) with - // write(byte[],int,int) of various lengths. - baos = new ByteArrayOutputStream(); - b64os = new Base64OutputStream(baos, flags, false); - p = 0; - while (p < encoded.length) { - int l = writeLengths[rng.nextInt(writeLengths.length)]; - l = Math.min(l, encoded.length-p); - if (l >= 0) { - b64os.write(encoded, p, l); - p += l; - } else { - l = Math.min(-l, encoded.length-p); - for (int i = 0; i < l; ++i) { - b64os.write(encoded[p+i]); - } - p += l; - } - } - b64os.close(); - actual = baos.toByteArray(); - assertEquals(plain, actual); - } - } -} -- cgit v1.1