1 files changed, 15 insertions, 189 deletions

diff --git a/src/leveldb/db/leveldb_main.cc b/src/leveldb/db/leveldb_main.cc
index 995d76107a..9f4b7dd70c 100644
--- a/src/leveldb/db/leveldb_main.cc
+++ b/src/leveldb/db/leveldb_main.cc
@@ -3,212 +3,38 @@
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
 
 #include <stdio.h>
-#include "db/dbformat.h"
-#include "db/filename.h"
-#include "db/log_reader.h"
-#include "db/version_edit.h"
-#include "db/write_batch_internal.h"
+#include "leveldb/dumpfile.h"
 #include "leveldb/env.h"
-#include "leveldb/iterator.h"
-#include "leveldb/options.h"
 #include "leveldb/status.h"
-#include "leveldb/table.h"
-#include "leveldb/write_batch.h"
-#include "util/logging.h"
 
 namespace leveldb {
-
 namespace {
 
-bool GuessType(const std::string& fname, FileType* type) {
-  size_t pos = fname.rfind('/');
-  std::string basename;
-  if (pos == std::string::npos) {
-    basename = fname;
-  } else {
-    basename = std::string(fname.data() + pos + 1, fname.size() - pos - 1);
-  }
-  uint64_t ignored;
-  return ParseFileName(basename, &ignored, type);
-}
-
-// Notified when log reader encounters corruption.
-class CorruptionReporter : public log::Reader::Reporter {
- public:
-  virtual void Corruption(size_t bytes, const Status& status) {
-    printf("corruption: %d bytes; %s\n",
-            static_cast<int>(bytes),
-            status.ToString().c_str());
-  }
-};
-
-// Print contents of a log file. (*func)() is called on every record.
-bool PrintLogContents(Env* env, const std::string& fname,
-                      void (*func)(Slice)) {
-  SequentialFile* file;
-  Status s = env->NewSequentialFile(fname, &file);
-  if (!s.ok()) {
-    fprintf(stderr, "%s\n", s.ToString().c_str());
-    return false;
-  }
-  CorruptionReporter reporter;
-  log::Reader reader(file, &reporter, true, 0);
-  Slice record;
-  std::string scratch;
-  while (reader.ReadRecord(&record, &scratch)) {
-    printf("--- offset %llu; ",
-           static_cast<unsigned long long>(reader.LastRecordOffset()));
-    (*func)(record);
-  }
-  delete file;
-  return true;
-}
-
-// Called on every item found in a WriteBatch.
-class WriteBatchItemPrinter : public WriteBatch::Handler {
+class StdoutPrinter : public WritableFile {
  public:
-  uint64_t offset_;
-  uint64_t sequence_;
-
-  virtual void Put(const Slice& key, const Slice& value) {
-    printf("  put '%s' '%s'\n",
-           EscapeString(key).c_str(),
-           EscapeString(value).c_str());
-  }
-  virtual void Delete(const Slice& key) {
-    printf("  del '%s'\n",
-           EscapeString(key).c_str());
+  virtual Status Append(const Slice& data) {
+    fwrite(data.data(), 1, data.size(), stdout);
+    return Status::OK();
   }
+  virtual Status Close() { return Status::OK(); }
+  virtual Status Flush() { return Status::OK(); }
+  virtual Status Sync() { return Status::OK(); }
 };
 
-
-// Called on every log record (each one of which is a WriteBatch)
-// found in a kLogFile.
-static void WriteBatchPrinter(Slice record) {
-  if (record.size() < 12) {
-    printf("log record length %d is too small\n",
-           static_cast<int>(record.size()));
-    return;
-  }
-  WriteBatch batch;
-  WriteBatchInternal::SetContents(&batch, record);
-  printf("sequence %llu\n",
-         static_cast<unsigned long long>(WriteBatchInternal::Sequence(&batch)));
-  WriteBatchItemPrinter batch_item_printer;
-  Status s = batch.Iterate(&batch_item_printer);
-  if (!s.ok()) {
-    printf("  error: %s\n", s.ToString().c_str());
-  }
-}
-
-bool DumpLog(Env* env, const std::string& fname) {
-  return PrintLogContents(env, fname, WriteBatchPrinter);
-}
-
-// Called on every log record (each one of which is a WriteBatch)
-// found in a kDescriptorFile.
-static void VersionEditPrinter(Slice record) {
-  VersionEdit edit;
-  Status s = edit.DecodeFrom(record);
-  if (!s.ok()) {
-    printf("%s\n", s.ToString().c_str());
-    return;
-  }
-  printf("%s", edit.DebugString().c_str());
-}
-
-bool DumpDescriptor(Env* env, const std::string& fname) {
-  return PrintLogContents(env, fname, VersionEditPrinter);
-}
-
-bool DumpTable(Env* env, const std::string& fname) {
-  uint64_t file_size;
-  RandomAccessFile* file = NULL;
-  Table* table = NULL;
-  Status s = env->GetFileSize(fname, &file_size);
-  if (s.ok()) {
-    s = env->NewRandomAccessFile(fname, &file);
-  }
-  if (s.ok()) {
-    // We use the default comparator, which may or may not match the
-    // comparator used in this database. However this should not cause
-    // problems since we only use Table operations that do not require
-    // any comparisons.  In particular, we do not call Seek or Prev.
-    s = Table::Open(Options(), file, file_size, &table);
-  }
-  if (!s.ok()) {
-    fprintf(stderr, "%s\n", s.ToString().c_str());
-    delete table;
-    delete file;
-    return false;
-  }
-
-  ReadOptions ro;
-  ro.fill_cache = false;
-  Iterator* iter = table->NewIterator(ro);
-  for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
-    ParsedInternalKey key;
-    if (!ParseInternalKey(iter->key(), &key)) {
-      printf("badkey '%s' => '%s'\n",
-             EscapeString(iter->key()).c_str(),
-             EscapeString(iter->value()).c_str());
-    } else {
-      char kbuf[20];
-      const char* type;
-      if (key.type == kTypeDeletion) {
-        type = "del";
-      } else if (key.type == kTypeValue) {
-        type = "val";
-      } else {
-        snprintf(kbuf, sizeof(kbuf), "%d", static_cast<int>(key.type));
-        type = kbuf;
-      }
-      printf("'%s' @ %8llu : %s => '%s'\n",
-             EscapeString(key.user_key).c_str(),
-             static_cast<unsigned long long>(key.sequence),
-             type,
-             EscapeString(iter->value()).c_str());
-    }
-  }
-  s = iter->status();
-  if (!s.ok()) {
-    printf("iterator error: %s\n", s.ToString().c_str());
-  }
-
-  delete iter;
-  delete table;
-  delete file;
-  return true;
-}
-
-bool DumpFile(Env* env, const std::string& fname) {
-  FileType ftype;
-  if (!GuessType(fname, &ftype)) {
-    fprintf(stderr, "%s: unknown file type\n", fname.c_str());
-    return false;
-  }
-  switch (ftype) {
-    case kLogFile:         return DumpLog(env, fname);
-    case kDescriptorFile:  return DumpDescriptor(env, fname);
-    case kTableFile:       return DumpTable(env, fname);
-
-    default: {
-      fprintf(stderr, "%s: not a dump-able file type\n", fname.c_str());
-      break;
-    }
-  }
-  return false;
-}
-
 bool HandleDumpCommand(Env* env, char** files, int num) {
+  StdoutPrinter printer;
   bool ok = true;
   for (int i = 0; i < num; i++) {
-    ok &= DumpFile(env, files[i]);
+    Status s = DumpFile(env, files[i], &printer);
+    if (!s.ok()) {
+      fprintf(stderr, "%s\n", s.ToString().c_str());
+      ok = false;
+    }
   }
   return ok;
 }
 
-}
+}  // namespace
 }  // namespace leveldb
 
 static void Usage() {