Import chromium-63.0.3239.132

net/tools/dump_cache/dump_cache.cc

@@ -0,0 +1,111 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This command-line program dumps the contents of a set of cache files, either
+// to stdout or to another set of cache files.
+
+#include <stdio.h>
+#include <string>
+
+#include "base/at_exit.h"
+#include "base/command_line.h"
+#include "base/strings/string16.h"
+#include "base/strings/string_util.h"
+#include "net/disk_cache/blockfile/disk_format.h"
+#include "net/tools/dump_cache/dump_files.h"
+
+enum Errors {
+  GENERIC = -1,
+  ALL_GOOD = 0,
+  INVALID_ARGUMENT = 1,
+  FILE_ACCESS_ERROR,
+  UNKNOWN_VERSION,
+  TOOL_NOT_FOUND,
+};
+
+// Dumps the file headers to stdout.
+const char kDumpHeaders[] = "dump-headers";
+
+// Dumps all entries to stdout.
+const char kDumpContents[] = "dump-contents";
+
+// Dumps the LRU lists(s).
+const char kDumpLists[] = "dump-lists";
+
+// Dumps the entry at the given address (see kDumpAt).
+const char kDumpEntry[] = "dump-entry";
+
+// The cache address to dump.
+const char kDumpAt[] = "at";
+
+// Dumps the allocation bitmap of a file (see kDumpFile).
+const char kDumpAllocation[] = "dump-allocation";
+
+// The file to look at.
+const char kDumpFile[] = "file";
+
+int Help() {
+  printf("dump_cache path_to_files [options]\n");
+  printf("Dumps internal cache structures.\n");
+  printf("warning: input files may be modified by this tool\n\n");
+  printf("--dump-headers: show file headers\n");
+  printf("--dump-contents [-v] [--full-key] [--csv]: list all entries\n");
+  printf("--dump-lists: follow the LRU list(s)\n");
+  printf(
+      "--dump-entry [-v] [--full-key] --at=0xf00: show the data stored at"
+      " 0xf00\n");
+  printf(
+      "--dump-allocation --file=data_0: show the allocation bitmap of"
+      " data_0\n");
+  printf("--csv: dump in a comma-separated-values format\n");
+  printf(
+      "--full-key: show up to 160 chars for the key. Use either -v or the"
+      " key address for longer keys\n");
+  printf("-v: detailed output (verbose)\n");
+  return INVALID_ARGUMENT;
+}
+
+// -----------------------------------------------------------------------
+
+int main(int argc, const char* argv[]) {
+  // Setup an AtExitManager so Singleton objects will be destroyed.
+  base::AtExitManager at_exit_manager;
+
+  base::CommandLine::Init(argc, argv);
+
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
+  base::CommandLine::StringVector args = command_line.GetArgs();
+  if (args.size() != 1)
+    return Help();
+
+  base::FilePath input_path(args[0]);
+  if (input_path.empty())
+    return Help();
+
+  int version = GetMajorVersion(input_path);
+  if (version != 2)
+    return FILE_ACCESS_ERROR;
+
+  if (command_line.HasSwitch(kDumpContents))
+    return DumpContents(input_path);
+
+  if (command_line.HasSwitch(kDumpLists))
+    return DumpLists(input_path);
+
+  if (command_line.HasSwitch(kDumpEntry) && command_line.HasSwitch(kDumpAt))
+    return DumpEntryAt(input_path, command_line.GetSwitchValueASCII(kDumpAt));
+
+  if (command_line.HasSwitch(kDumpAllocation) &&
+      command_line.HasSwitch(kDumpFile)) {
+    base::FilePath name =
+        input_path.AppendASCII(command_line.GetSwitchValueASCII(kDumpFile));
+    return DumpAllocation(name);
+  }
+
+  if (command_line.HasSwitch(kDumpHeaders))
+    return DumpHeaders(input_path);
+
+  return Help();
+}