Index: third_party/protobuf/java/core/src/main/java/com/google/protobuf/TextFormatEscaper.java |
diff --git a/third_party/protobuf/java/core/src/main/java/com/google/protobuf/TextFormatEscaper.java b/third_party/protobuf/java/core/src/main/java/com/google/protobuf/TextFormatEscaper.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..da9ceadd168584a649e1cb143cc34437d12ae498 |
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+++ b/third_party/protobuf/java/core/src/main/java/com/google/protobuf/TextFormatEscaper.java |
@@ -0,0 +1,137 @@ |
+// Protocol Buffers - Google's data interchange format |
+// Copyright 2008 Google Inc. All rights reserved. |
+// https://developers.google.com/protocol-buffers/ |
+// |
+// Redistribution and use in source and binary forms, with or without |
+// modification, are permitted provided that the following conditions are |
+// met: |
+// |
+// * Redistributions of source code must retain the above copyright |
+// notice, this list of conditions and the following disclaimer. |
+// * Redistributions in binary form must reproduce the above |
+// copyright notice, this list of conditions and the following disclaimer |
+// in the documentation and/or other materials provided with the |
+// distribution. |
+// * Neither the name of Google Inc. nor the names of its |
+// contributors may be used to endorse or promote products derived from |
+// this software without specific prior written permission. |
+// |
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ |
+package com.google.protobuf; |
+ |
+/** |
+ * Provide text format escaping support for proto2 instances. |
+ */ |
+final class TextFormatEscaper { |
+ private TextFormatEscaper() {} |
+ |
+ private interface ByteSequence { |
+ int size(); |
+ byte byteAt(int offset); |
+ } |
+ |
+ /** |
+ * Escapes bytes in the format used in protocol buffer text format, which |
+ * is the same as the format used for C string literals. All bytes |
+ * that are not printable 7-bit ASCII characters are escaped, as well as |
+ * backslash, single-quote, and double-quote characters. Characters for |
+ * which no defined short-hand escape sequence is defined will be escaped |
+ * using 3-digit octal sequences. |
+ */ |
+ static String escapeBytes(final ByteSequence input) { |
+ final StringBuilder builder = new StringBuilder(input.size()); |
+ for (int i = 0; i < input.size(); i++) { |
+ final byte b = input.byteAt(i); |
+ switch (b) { |
+ // Java does not recognize \a or \v, apparently. |
+ case 0x07: builder.append("\\a"); break; |
+ case '\b': builder.append("\\b"); break; |
+ case '\f': builder.append("\\f"); break; |
+ case '\n': builder.append("\\n"); break; |
+ case '\r': builder.append("\\r"); break; |
+ case '\t': builder.append("\\t"); break; |
+ case 0x0b: builder.append("\\v"); break; |
+ case '\\': builder.append("\\\\"); break; |
+ case '\'': builder.append("\\\'"); break; |
+ case '"' : builder.append("\\\""); break; |
+ default: |
+ // Only ASCII characters between 0x20 (space) and 0x7e (tilde) are |
+ // printable. Other byte values must be escaped. |
+ if (b >= 0x20 && b <= 0x7e) { |
+ builder.append((char) b); |
+ } else { |
+ builder.append('\\'); |
+ builder.append((char) ('0' + ((b >>> 6) & 3))); |
+ builder.append((char) ('0' + ((b >>> 3) & 7))); |
+ builder.append((char) ('0' + (b & 7))); |
+ } |
+ break; |
+ } |
+ } |
+ return builder.toString(); |
+ } |
+ |
+ /** |
+ * Escapes bytes in the format used in protocol buffer text format, which |
+ * is the same as the format used for C string literals. All bytes |
+ * that are not printable 7-bit ASCII characters are escaped, as well as |
+ * backslash, single-quote, and double-quote characters. Characters for |
+ * which no defined short-hand escape sequence is defined will be escaped |
+ * using 3-digit octal sequences. |
+ */ |
+ static String escapeBytes(final ByteString input) { |
+ return escapeBytes(new ByteSequence() { |
+ @Override |
+ public int size() { |
+ return input.size(); |
+ } |
+ @Override |
+ public byte byteAt(int offset) { |
+ return input.byteAt(offset); |
+ } |
+ }); |
+ } |
+ |
+ /** |
+ * Like {@link #escapeBytes(ByteString)}, but used for byte array. |
+ */ |
+ static String escapeBytes(final byte[] input) { |
+ return escapeBytes(new ByteSequence() { |
+ @Override |
+ public int size() { |
+ return input.length; |
+ } |
+ @Override |
+ public byte byteAt(int offset) { |
+ return input[offset]; |
+ } |
+ }); |
+ } |
+ |
+ /** |
+ * Like {@link #escapeBytes(ByteString)}, but escapes a text string. |
+ * Non-ASCII characters are first encoded as UTF-8, then each byte is escaped |
+ * individually as a 3-digit octal escape. Yes, it's weird. |
+ */ |
+ static String escapeText(final String input) { |
+ return escapeBytes(ByteString.copyFromUtf8(input)); |
+ } |
+ |
+ /** |
+ * Escape double quotes and backslashes in a String for unicode output of a message. |
+ */ |
+ static String escapeDoubleQuotesAndBackslashes(final String input) { |
+ return input.replace("\\", "\\\\").replace("\"", "\\\""); |
+ } |
+} |