Compress sources of JS libraries in addition to the snapshot.

src/bz2-decompress.cc

+// Copyright 2011 the V8 project authors. 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.
+
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+#include <bzlib.h>
+#endif
+
+#include "bz2-decompress.h"
+#include "v8.h"
+
+BZip2Decompressor::BZip2Decompressor()
+    : raw_data(new char*[v8::V8::GetCompressedStartupDataCount()]) {
+}
+
+
+BZip2Decompressor::~BZip2Decompressor() {
+  for (int i = 0; i < v8::V8::GetCompressedStartupDataCount(); ++i) {
+    delete[] raw_data[i];
+  }
+  delete[] raw_data;
+}
+
+
+int BZip2Decompressor::DecompressStartupData() {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  ASSERT_EQ(v8::StartupData::kBZip2,
+            v8::V8::GetCompressedStartupDataAlgorithm());
+  int compressed_data_count = v8::V8::GetCompressedStartupDataCount();
+  v8::StartupData* compressed_data = new v8::StartupData[compressed_data_count];
+  v8::V8::GetCompressedStartupData(compressed_data);
+  for (int i = 0; i < compressed_data_count; ++i) {
+    unsigned int decompressed_size = compressed_data[i].raw_size;
+    char* decompressed = raw_data[i] = new char[decompressed_size];
+    if (compressed_data[i].compressed_size != 0) {
+      int result =
+          BZ2_bzBuffToBuffDecompress(decompressed,
+                                     &decompressed_size,
+                                     const_cast<char*>(compressed_data[i].data),
+                                     compressed_data[i].compressed_size,
+                                     0, 1);
+      if (result != BZ_OK) return result;
+    } else {
+      ASSERT_EQ(0, decompressed_size);
+    }
+    compressed_data[i].data = decompressed;
+    compressed_data[i].raw_size = decompressed_size;
+  }
+  v8::V8::SetDecompressedStartupData(compressed_data);
+  return BZ_OK;
+#else
+  return 0;
+#endif  // COMPRESS_STARTUP_DATA_BZ2
+}