sync: get rid of path_helpers

chrome/browser/sync/util/path_helpers_win.cc

-// Copyright (c) 2009 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.
-
-#include "chrome/browser/sync/util/path_helpers.h"
-
-#include <Shlwapi.h>
-#include <stdlib.h>
-
-#include "base/logging.h"
-#include "base/port.h"
-#include "build/build_config.h"
-#include "chrome/browser/sync/syncable/syncable.h"
-
-#ifndef OS_WIN
-#error Compile this file on Windows only.
-#endif
-
-using std::string;
-
-namespace {
-const string kWindowsIllegalBaseFilenames[] = {
-    "CON", "PRN", "AUX", "NUL", "COM1", "COM2",
-    "COM3", "COM4", "COM5", "COM6", "COM7",
-    "COM8", "COM9", "LPT1", "LPT2", "LPT3",
-    "LPT4", "LPT5", "LPT6", "LPT7", "LPT8",
-    "LPT9" };
-}
-
-// See: http://msdn.microsoft.com/library/default.asp?url=/library/
-// en-us/fileio/fs/naming_a_file.asp
-// note that * and ? are not listed on the page as illegal characters,
-// but they are.
-string MakePathComponentOSLegal(const string& component) {
-  CHECK(!component.empty());
-  string mutable_component = component;
-
-  // Remove illegal characters.
-  for (string::iterator i = mutable_component.begin();
-       i != mutable_component.end();) {
-    if ((string::npos != string("<>:\"/\\|*?").find(*i)) ||
-        ((static_cast<unsigned short>(*i) >= 0) &&
-         (static_cast<unsigned short>(*i) <= 31))) {
-      mutable_component.erase(i);
-    } else {
-      ++i;
-    }
-  }
-
-  // Remove trailing spaces or periods.
-  while (mutable_component.size() &&
-         ((mutable_component.at(mutable_component.size() - 1) == ' ') ||
-          (mutable_component.at(mutable_component.size() - 1) == '.')))
-    mutable_component.resize(mutable_component.size() - 1, ' ');
-
-  // Remove a bunch of forbidden names. windows only seems to mind if
-  // a forbidden name matches our name exactly (e.g. "prn") or if the name is
-  // the forbidden name, followed by a dot, followed by anything
-  // (e.g., "prn.anything.foo.bar")
-
-  // From this point out, we break mutable_component into two strings, and use
-  // them this way: we save anything after and including the first dot (usually
-  // the extension) and only mess with stuff before the first dot.
-  string::size_type first_dot = mutable_component.find_first_of('.');
-  if (string::npos == first_dot)
-    first_dot = mutable_component.size();
-  string sub = mutable_component.substr(0, first_dot);
-  string postsub = mutable_component.substr(first_dot);
-  CHECK(sub + postsub == mutable_component);
-  for (int i = 0; i < ARRAYSIZE(kWindowsIllegalBaseFilenames); i++) {
-    // ComparePathNames(a, b) == 0 -> same
-    if (syncable::ComparePathNames(kWindowsIllegalBaseFilenames[i], sub) == 0) {
-      sub.append("~1");
-      break;
-    }
-  }
-  if (("" == sub) && ("" == postsub)) {
-    sub = "~1";
-  }
-
-  // Return the new name, only if it differs from the original.
-  if ((sub + postsub) == component)
-    return "";
-  return (sub + postsub);
-}