Revision created by MOE tool push_codebase.

MOE_MIGRATION=


git-svn-id: https://leveldb.googlecode.com/svn/trunk@22 62dab493-f737-651d-591e-8d6aee1b9529

1 files changed, 0 insertions, 131 deletions

diff --git a/table/format.cc b/table/format.cc
deleted file mode 100644
index 8c6b0f3..0000000
--- a/table/format.cc
+++ /dev/null
@@ -1,131 +0,0 @@
-// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file. See the AUTHORS file for names of contributors.
-
-#include "table/format.h"
-
-#include "leveldb/env.h"
-#include "port/port.h"
-#include "table/block.h"
-#include "util/coding.h"
-#include "util/crc32c.h"
-
-namespace leveldb {
-
-void BlockHandle::EncodeTo(std::string* dst) const {
-  // Sanity check that all fields have been set
-  assert(offset_ != ~static_cast<uint64_t>(0));
-  assert(size_ != ~static_cast<uint64_t>(0));
-  PutVarint64(dst, offset_);
-  PutVarint64(dst, size_);
-}
-
-Status BlockHandle::DecodeFrom(Slice* input) {
-  if (GetVarint64(input, &offset_) &&
-      GetVarint64(input, &size_)) {
-    return Status::OK();
-  } else {
-    return Status::Corruption("bad block handle");
-  }
-}
-
-void Footer::EncodeTo(std::string* dst) const {
-#ifndef NDEBUG
-  const size_t original_size = dst->size();
-#endif
-  metaindex_handle_.EncodeTo(dst);
-  index_handle_.EncodeTo(dst);
-  dst->resize(2 * BlockHandle::kMaxEncodedLength);  // Padding
-  PutFixed32(dst, static_cast<uint32_t>(kTableMagicNumber));
-  PutFixed32(dst, static_cast<uint32_t>(kTableMagicNumber >> 32));
-  assert(dst->size() == original_size + kEncodedLength);
-}
-
-Status Footer::DecodeFrom(Slice* input) {
-  const char* magic_ptr = input->data() + kEncodedLength - 8;
-  const uint32_t magic_lo = DecodeFixed32(magic_ptr);
-  const uint32_t magic_hi = DecodeFixed32(magic_ptr + 4);
-  const uint64_t magic = ((static_cast<uint64_t>(magic_hi) << 32) |
-                          (static_cast<uint64_t>(magic_lo)));
-  if (magic != kTableMagicNumber) {
-    return Status::InvalidArgument("not an sstable (bad magic number)");
-  }
-
-  Status result = metaindex_handle_.DecodeFrom(input);
-  if (result.ok()) {
-    result = index_handle_.DecodeFrom(input);
-  }
-  if (result.ok()) {
-    // We skip over any leftover data (just padding for now) in "input"
-    const char* end = magic_ptr + 8;
-    *input = Slice(end, input->data() + input->size() - end);
-  }
-  return result;
-}
-
-Status ReadBlock(RandomAccessFile* file,
-                 const ReadOptions& options,
-                 const BlockHandle& handle,
-                 Block** block) {
-  *block = NULL;
-
-  // Read the block contents as well as the type/crc footer.
-  // See table_builder.cc for the code that built this structure.
-  size_t n = handle.size();
-  char* buf = new char[n + kBlockTrailerSize];
-  Slice contents;
-  Status s = file->Read(handle.offset(), n + kBlockTrailerSize, &contents, buf);
-  if (!s.ok()) {
-    delete[] buf;
-    return s;
-  }
-  if (contents.size() != n + kBlockTrailerSize) {
-    delete[] buf;
-    return Status::Corruption("truncated block read");
-  }
-
-  // Check the crc of the type and the block contents
-  const char* data = contents.data();    // Pointer to where Read put the data
-  if (options.verify_checksums) {
-    const uint32_t crc = crc32c::Unmask(DecodeFixed32(data + n + 1));
-    const uint32_t actual = crc32c::Value(data, n + 1);
-    if (actual != crc) {
-      delete[] buf;
-      s = Status::Corruption("block checksum mismatch");
-      return s;
-    }
-  }
-
-  switch (data[n]) {
-    case kNoCompression:
-      if (data != buf) {
-        // File implementation gave us pointer to some other data.
-        // Copy into buf[].
-        memcpy(buf, data, n + kBlockTrailerSize);
-      }
-
-      // Ok
-      break;
-    case kSnappyCompression: {
-      std::string decompressed;
-      if (!port::Snappy_Uncompress(data, n, &decompressed)) {
-        delete[] buf;
-        s = Status::Corruption("corrupted compressed block contents");
-        return s;
-      }
-      delete[] buf;     // Done with uncompressed data
-      buf = new char[decompressed.size()];
-      memcpy(buf, decompressed.data(), decompressed.size());
-      n = decompressed.size();
-      break;
-    }
-    default:
-      delete[] buf;
-      return Status::Corruption("bad block type");
-  }
-
-  *block = new Block(buf, n);  // Block takes ownership of buf[]
-  return Status::OK();
-}
-
-}