Add a tool to dump HTML5 filesystem from CUI

webkit/fileapi/dump_file_system.cc

Index: webkit/fileapi/dump_file_system.cc
diff --git a/webkit/fileapi/dump_file_system.cc b/webkit/fileapi/dump_file_system.cc
new file mode 100644
index 0000000000000000000000000000000000000000..24c3aac4a62a50177573e4fc81b4c7bd0bced3d8
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+++ b/webkit/fileapi/dump_file_system.cc
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+// Copyright (c) 2013 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.
+//
+// A tool to dump HTML5 filesystem from CUI.
+//
+// Usage:
+//
+// ./out/Release/dump_file_system [options] <profile dir> [origin]...
+//
+// If no origin is specified, this dumps all origins in the profile dir.
+//
+// Available options:
+//
+// -t      : dumps temporary files instead of persistent.
+// -s      : dumps syncable files instead of persistent.
+// -u user : uses the specified user name instead of "Default".
+// -l      : more information will be displayed.
+//
+// The format of -l option is:
+//
+// === ORIGIN origin_name origin_dir ===
+// file_name file_id file_size file_content_path
+// ...
+//
+// where file_name has a trailing slash, file_size is the number of
+// children, and file_content_path is empty if the file is a directory.
+//
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <stack>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "base/file_util.h"
+#include "base/files/file_path.h"
+#include "base/format_macros.h"
+#include "base/stringprintf.h"
+#include "webkit/fileapi/file_system_directory_database.h"
+#include "webkit/fileapi/file_system_origin_database.h"
+#include "webkit/fileapi/file_system_types.h"
+#include "webkit/fileapi/file_system_util.h"
+#include "webkit/fileapi/obfuscated_file_util.h"
+#include "webkit/fileapi/sandbox_mount_point_provider.h"
+
+namespace {
+
+bool g_opt_long;
+fileapi::FileSystemType g_opt_fs_type = fileapi::kFileSystemTypePersistent;
+
+void ShowMessageAndExit(const std::string& msg) {
+  fprintf(stderr, "%s\n", msg.c_str());
+  exit(EXIT_FAILURE);
+}
+
+void ShowUsageAndExit(const std::string& arg0) {
+  ShowMessageAndExit("Usage: " + arg0 +
+                     " [-l] [-t] [-s] [-u user] <profile dir> [origin]...");
+}
+
+}  // namespace
+
+namespace fileapi {
+
+static void DumpDirectoryTree(const std::string& origin_name,
+                              base::FilePath origin_dir) {
+  origin_dir = origin_dir.Append(
+      ObfuscatedFileUtil::GetDirectoryNameForType(g_opt_fs_type));
+
+  printf("=== ORIGIN %s %s ===\n",
+         origin_name.c_str(), FilePathToString(origin_dir).c_str());
+
+  if (!file_util::DirectoryExists(origin_dir)) {
+    ShowMessageAndExit(FilePathToString(origin_dir) +
+                       " is not a filesystem origin directory");
+  }
+
+  FileSystemDirectoryDatabase directory_db(origin_dir);
+  FileSystemDirectoryDatabase::FileId root_id;
+  if (!directory_db.GetFileWithPath(StringToFilePath("/"), &root_id)) {
+    ShowMessageAndExit(FilePathToString(origin_dir) +
+                       " does not have the root directory");
+  }
+
+  std::stack<std::pair<FileSystemDirectoryDatabase::FileId,
+                       std::string> > paths;
+  paths.push(std::make_pair(root_id, ""));
+  while (!paths.empty()) {
+    FileSystemDirectoryDatabase::FileId id = paths.top().first;
+    const std::string dirname = paths.top().second;
+    paths.pop();
+
+    FileSystemDirectoryDatabase::FileInfo info;
+    if (!directory_db.GetFileInfo(id, &info)) {
+      ShowMessageAndExit(base::StringPrintf("GetFileInfo failed for %"PRId64,
+                                            id));
+    }
+
+    const std::string name =
+        dirname + "/" + FilePathToString(base::FilePath(info.name));
+    std::vector<FileSystemDirectoryDatabase::FileId> children;
+    if (info.is_directory()) {
+      if (!directory_db.ListChildren(id, &children)) {
+        ShowMessageAndExit(base::StringPrintf(
+            "ListChildren failed for %s (%"PRId64")",
+            info.name.c_str(), id));
+      }
+
+      for (size_t j = children.size(); j; j--)
+        paths.push(make_pair(children[j-1], name));
+    }
+
+    // +1 for the leading extra slash.
+    const char* display_name = name.c_str() + 1;
+    const char* directory_suffix = info.is_directory() ? "/" : "";
+    if (g_opt_long) {
+      int64 size;
+      if (info.is_directory()) {
+        size = static_cast<int64>(children.size());
+      } else {
+        file_util::GetFileSize(origin_dir.Append(info.data_path), &size);
+      }
+      // TODO(hamaji): Modification time?
+      printf("%s%s %"PRId64" %"PRId64" %s\n",
+             display_name,
+             directory_suffix,
+             id,
+             size,
+             FilePathToString(info.data_path).c_str());
+    } else {
+      printf("%s%s\n", display_name, directory_suffix);
+    }
+  }
+}
+
+static void DumpOrigin(const base::FilePath& file_system_dir,
+                       const std::string& origin_name) {
+  FileSystemOriginDatabase origin_db(file_system_dir);
+  base::FilePath origin_dir;
+  if (!origin_db.HasOriginPath(origin_name)) {
+    ShowMessageAndExit("Origin " + origin_name + " is not in " +
+                       FilePathToString(file_system_dir));
+  }
+
+  if (!origin_db.GetPathForOrigin(origin_name, &origin_dir)) {
+    ShowMessageAndExit("Failed to get path of origin " + origin_name +
+                       " in " + FilePathToString(file_system_dir));
+  }
+  DumpDirectoryTree(origin_name, file_system_dir.Append(origin_dir));
+}
+
+static void DumpFileSystem(const base::FilePath& file_system_dir) {
+  FileSystemOriginDatabase origin_db(file_system_dir);
+  std::vector<FileSystemOriginDatabase::OriginRecord> origins;
+  origin_db.ListAllOrigins(&origins);
+  for (size_t i = 0; i < origins.size(); i++) {
+    const FileSystemOriginDatabase::OriginRecord& origin = origins[i];
+    DumpDirectoryTree(origin.origin, file_system_dir.Append(origin.path));
+    puts("");
+  }
+}
+
+}  // namespace fileapi
+
+int main(int argc, char* argv[]) {
+  const char* arg0 = argv[0];
+  std::string username = "Default";
+  while (true) {
+    if (argc < 2)
+      ShowUsageAndExit(arg0);
+
+    if (std::string(argv[1]) == "-l") {
+      g_opt_long = true;
+      argc--;
+      argv++;
+    } else if (std::string(argv[1]) == "-t") {
+      g_opt_fs_type = fileapi::kFileSystemTypeTemporary;
+      argc--;
+      argv++;
+    } else if (std::string(argv[1]) == "-s") {
+      g_opt_fs_type = fileapi::kFileSystemTypeSyncable;
+      argc--;
+      argv++;
+    } else if (std::string(argv[1]) == "-u") {
+      if (argc < 3)
+        ShowUsageAndExit(arg0);
+      username = argv[2];
+      argc -= 2;
+      argv += 2;
+    } else {
+      break;
+    }
+  }
+
+  if (argc < 2)
+    ShowUsageAndExit(arg0);
+
+  const base::FilePath profile_dir(fileapi::StringToFilePath(argv[1]));
+  if (!file_util::DirectoryExists(profile_dir)) {
+    ShowMessageAndExit(fileapi::FilePathToString(profile_dir) +
+                       " is not a directory");
+  }
+
+  const base::FilePath file_system_dir(
+      profile_dir.Append(fileapi::StringToFilePath(username)).Append(
+          base::FilePath(
+              fileapi::SandboxMountPointProvider::kFileSystemDirectory)));
+  if (!file_util::DirectoryExists(file_system_dir)) {
+    ShowMessageAndExit(fileapi::FilePathToString(file_system_dir) +
+                       " is not a filesystem directory");
+  }
+
+  if (argc == 2) {
+    fileapi::DumpFileSystem(file_system_dir);
+  } else {
+    for (int i = 2; i < argc; i++) {
+      fileapi::DumpOrigin(file_system_dir, argv[i]);
+    }
+  }
+  return 0;
+}