Add Java JSON protocol implementation.
Implement full-featured JSON protocol, low-level base-64 encode/decode
methods, and related tests.
Conflicts (resolved by dreiss):
test/java/build.xml
git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665562 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/java/src/protocol/TBase64Utils.java b/lib/java/src/protocol/TBase64Utils.java
new file mode 100644
index 0000000..f3fc1c3
--- /dev/null
+++ b/lib/java/src/protocol/TBase64Utils.java
@@ -0,0 +1,116 @@
+// Copyright (c) 2006- Facebook
+// Distributed under the Thrift Software License
+//
+// See accompanying file LICENSE or visit the Thrift site at:
+// http://developers.facebook.com/thrift/
+
+package com.facebook.thrift.protocol;
+
+/**
+ * Class for encoding and decoding Base64 data.
+ *
+ * This class is kept at package level because the interface does no input
+ * validation and is therefore too low-level for generalized reuse.
+ *
+ * Note also that the encoding does not pad with equal signs , as discussed in
+ * section 2.2 of the RFC (http://www.faqs.org/rfcs/rfc3548.html). Furthermore,
+ * bad data encountered when decoding is neither rejected or ignored but simply
+ * results in bad decoded data -- this is not in compliance with the RFC but is
+ * done in the interest of performance.
+ *
+ * @author Chad Walters <chad@powerset.com>
+ */
+class TBase64Utils {
+
+ private static final String ENCODE_TABLE =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+ /**
+ * Encode len bytes of data in src at offset srcOff, storing the result into
+ * dst at offset dstOff. len must be 1, 2, or 3. dst must have at least len+1
+ * bytes of space at dstOff. src and dst should not be the same object. This
+ * method does no validation of the input values in the interest of
+ * performance.
+ *
+ * @param src the source of bytes to encode
+ * @param srcOff the offset into the source to read the unencoded bytes
+ * @param len the number of bytes to encode (must be 1, 2, or 3).
+ * @param dst the destination for the encoding
+ * @param dstOff the offset into the destination to place the encoded bytes
+ */
+ static final void encode(byte[] src, int srcOff, int len, byte[] dst,
+ int dstOff) {
+ dst[dstOff] = (byte)ENCODE_TABLE.charAt((src[srcOff] >> 2) & 0x3F);
+ if (len == 3) {
+ dst[dstOff + 1] =
+ (byte)ENCODE_TABLE.charAt(
+ ((src[srcOff] << 4) + (src[srcOff+1] >> 4)) & 0x3F);
+ dst[dstOff + 2] =
+ (byte)ENCODE_TABLE.charAt(
+ ((src[srcOff+1] << 2) + (src[srcOff+2] >> 6)) & 0x3F);
+ dst[dstOff + 3] =
+ (byte)ENCODE_TABLE.charAt(src[srcOff+2] & 0x3F);
+ }
+ else if (len == 2) {
+ dst[dstOff+1] =
+ (byte)ENCODE_TABLE.charAt(
+ ((src[srcOff] << 4) + (src[srcOff+1] >> 4)) & 0x3F);
+ dst[dstOff + 2] =
+ (byte)ENCODE_TABLE.charAt((src[srcOff+1] << 2) & 0x3F);
+
+ }
+ else { // len == 1) {
+ dst[dstOff + 1] =
+ (byte)ENCODE_TABLE.charAt((src[srcOff] << 4) & 0x3F);
+ }
+ }
+
+ private static final byte[] DECODE_TABLE = {
+ -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+ -1,-1,-1,-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,-1,-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 len bytes of data in src at offset srcOff, storing the result into
+ * dst at offset dstOff. len must be 2, 3, or 4. dst must have at least len-1
+ * bytes of space at dstOff. src and dst may be the same object as long as
+ * dstoff <= srcOff. This method does no validation of the input values in
+ * the interest of performance.
+ *
+ * @param src the source of bytes to decode
+ * @param srcOff the offset into the source to read the encoded bytes
+ * @param len the number of bytes to decode (must be 2, 3, or 4)
+ * @param dst the destination for the decoding
+ * @param dstOff the offset into the destination to place the decoded bytes
+ */
+ static final void decode(byte[] src, int srcOff, int len, byte[] dst,
+ int dstOff) {
+ dst[dstOff] = (byte)
+ ((DECODE_TABLE[src[srcOff] & 0x0FF] << 2) |
+ (DECODE_TABLE[src[srcOff+1] & 0x0FF] >> 4));
+ if (len > 2) {
+ dst[dstOff+1] = (byte)
+ (((DECODE_TABLE[src[srcOff+1] & 0x0FF] << 4) & 0xF0) |
+ (DECODE_TABLE[src[srcOff+2] & 0x0FF] >> 2));
+ if (len > 3) {
+ dst[dstOff+2] = (byte)
+ (((DECODE_TABLE[src[srcOff+2] & 0x0FF] << 6) & 0xC0) |
+ DECODE_TABLE[src[srcOff+3] & 0x0FF]);
+ }
+ }
+ }
+}