Separate out file_util functions that use ICU into their own file.

This prevents ~300K of ICU being linked into chrome.exe due to a false
dependency.


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@13281 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 72 deletions

diff --git a/base/file_util.cc b/base/file_util.cc
index cb6c7e01..9ba6eed 100644
--- a/base/file_util.cc
+++ b/base/file_util.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2009 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.
 
@@ -14,7 +14,6 @@
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/string_util.h"
-#include "unicode/uniset.h"
 
 #include "base/string_piece.h"
 #include "base/sys_string_conversions.h"
@@ -144,76 +143,6 @@ void ReplaceExtension(FilePath* path, const FilePath::StringType& extension) {
   value.append(clean_extension);
 }
 
-void ReplaceIllegalCharacters(std::wstring* file_name, int replace_char) {
-  DCHECK(file_name);
-
-  // Control characters, formatting characters, non-characters, and
-  // some printable ASCII characters regarded as dangerous ('"*/:<>?\\').
-  // See  http://blogs.msdn.com/michkap/archive/2006/11/03/941420.aspx
-  // and http://msdn2.microsoft.com/en-us/library/Aa365247.aspx
-  // TODO(jungshik): Revisit the set. ZWJ and ZWNJ are excluded because they
-  // are legitimate in Arabic and some S/SE Asian scripts. However, when used
-  // elsewhere, they can be confusing/problematic.
-  // Also, consider wrapping the set with our Singleton class to create and
-  // freeze it only once. Note that there's a trade-off between memory and
-  // speed.
-
-  UErrorCode status = U_ZERO_ERROR;
-#if defined(WCHAR_T_IS_UTF16)
-  UnicodeSet illegal_characters(UnicodeString(
-      L"[[\"*/:<>?\\\\|][:Cc:][:Cf:] - [\u200c\u200d]]"), status);
-#else
-  UnicodeSet illegal_characters(UNICODE_STRING_SIMPLE(
-      "[[\"*/:<>?\\\\|][:Cc:][:Cf:] - [\\u200c\\u200d]]").unescape(), status);
-#endif
-  DCHECK(U_SUCCESS(status));
-  // Add non-characters. If this becomes a performance bottleneck by
-  // any chance, check |ucs4 & 0xFFFEu == 0xFFFEu|, instead.
-  illegal_characters.add(0xFDD0, 0xFDEF);
-  for (int i = 0; i <= 0x10; ++i) {
-    int plane_base = 0x10000 * i;
-    illegal_characters.add(plane_base + 0xFFFE, plane_base + 0xFFFF);
-  }
-  illegal_characters.freeze();
-  DCHECK(!illegal_characters.contains(replace_char) && replace_char < 0x10000);
-
-  // Remove leading and trailing whitespace.
-  TrimWhitespace(*file_name, TRIM_ALL, file_name);
-
-  std::wstring::size_type i = 0;
-  std::wstring::size_type length = file_name->size();
-  const wchar_t* wstr = file_name->data();
-#if defined(WCHAR_T_IS_UTF16)
-  // Using |span| method of UnicodeSet might speed things up a bit, but
-  // it's not likely to matter here.
-  std::wstring temp;
-  temp.reserve(length);
-  while (i < length) {
-    UChar32 ucs4;
-    std::wstring::size_type prev = i;
-    U16_NEXT(wstr, i, length, ucs4);
-    if (illegal_characters.contains(ucs4)) {
-      temp.push_back(replace_char);
-    } else if (ucs4 < 0x10000) {
-      temp.push_back(ucs4);
-    } else {
-      temp.push_back(wstr[prev]);
-      temp.push_back(wstr[prev + 1]);
-    }
-  }
-  file_name->swap(temp);
-#elif defined(WCHAR_T_IS_UTF32)
-  while (i < length) {
-    if (illegal_characters.contains(wstr[i])) {
-      (*file_name)[i] = replace_char;
-    }
-    ++i;
-  }
-#else
-#error wchar_t* should be either UTF-16 or UTF-32
-#endif
-}
-
 bool ContentsEqual(const FilePath& filename1, const FilePath& filename2) {
   // We open the file in binary format even if they are text files because
   // we are just comparing that bytes are exactly same in both files and not