Squashed 'third_party/snappy/' content from commit fe18b4632
Change-Id: Ifce86fec16230732a761515b70624a35f3095aea
git-subtree-dir: third_party/snappy
git-subtree-split: fe18b46322727fe4bc6939326ba6bde1e0858b61
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/snappy-sinksource.cc b/snappy-sinksource.cc
new file mode 100644
index 0000000..8214964
--- /dev/null
+++ b/snappy-sinksource.cc
@@ -0,0 +1,121 @@
+// Copyright 2011 Google Inc. All Rights Reserved.
+//
+// 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.
+
+#include <stddef.h>
+#include <cstring>
+
+#include "snappy-sinksource.h"
+
+namespace snappy {
+
+Source::~Source() = default;
+
+Sink::~Sink() = default;
+
+char* Sink::GetAppendBuffer(size_t length, char* scratch) {
+ // TODO: Switch to [[maybe_unused]] when we can assume C++17.
+ (void)length;
+
+ return scratch;
+}
+
+char* Sink::GetAppendBufferVariable(
+ size_t min_size, size_t desired_size_hint, char* scratch,
+ size_t scratch_size, size_t* allocated_size) {
+ // TODO: Switch to [[maybe_unused]] when we can assume C++17.
+ (void)min_size;
+ (void)desired_size_hint;
+
+ *allocated_size = scratch_size;
+ return scratch;
+}
+
+void Sink::AppendAndTakeOwnership(
+ char* bytes, size_t n,
+ void (*deleter)(void*, const char*, size_t),
+ void *deleter_arg) {
+ Append(bytes, n);
+ (*deleter)(deleter_arg, bytes, n);
+}
+
+ByteArraySource::~ByteArraySource() = default;
+
+size_t ByteArraySource::Available() const { return left_; }
+
+const char* ByteArraySource::Peek(size_t* len) {
+ *len = left_;
+ return ptr_;
+}
+
+void ByteArraySource::Skip(size_t n) {
+ left_ -= n;
+ ptr_ += n;
+}
+
+UncheckedByteArraySink::~UncheckedByteArraySink() { }
+
+void UncheckedByteArraySink::Append(const char* data, size_t n) {
+ // Do no copying if the caller filled in the result of GetAppendBuffer()
+ if (data != dest_) {
+ std::memcpy(dest_, data, n);
+ }
+ dest_ += n;
+}
+
+char* UncheckedByteArraySink::GetAppendBuffer(size_t len, char* scratch) {
+ // TODO: Switch to [[maybe_unused]] when we can assume C++17.
+ (void)len;
+ (void)scratch;
+
+ return dest_;
+}
+
+void UncheckedByteArraySink::AppendAndTakeOwnership(
+ char* bytes, size_t n,
+ void (*deleter)(void*, const char*, size_t),
+ void *deleter_arg) {
+ if (bytes != dest_) {
+ std::memcpy(dest_, bytes, n);
+ (*deleter)(deleter_arg, bytes, n);
+ }
+ dest_ += n;
+}
+
+char* UncheckedByteArraySink::GetAppendBufferVariable(
+ size_t min_size, size_t desired_size_hint, char* scratch,
+ size_t scratch_size, size_t* allocated_size) {
+ // TODO: Switch to [[maybe_unused]] when we can assume C++17.
+ (void)min_size;
+ (void)scratch;
+ (void)scratch_size;
+
+ *allocated_size = desired_size_hint;
+ return dest_;
+}
+
+} // namespace snappy