Add m-esr52 at 52.6.0

1 files changed, 332 insertions, 0 deletions

diff --git a/ipc/chromium/src/base/file_path.cc b/ipc/chromium/src/base/file_path.cc
new file mode 100644
index 000000000..f901b583d
--- /dev/null
+++ b/ipc/chromium/src/base/file_path.cc
@@ -0,0 +1,332 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2008 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 <fstream>
+
+#include "base/file_path.h"
+#include "base/logging.h"
+
+// These includes are just for the *Hack functions, and should be removed
+// when those functions are removed.
+#include "base/string_piece.h"
+#include "base/string_util.h"
+#include "base/sys_string_conversions.h"
+
+#if defined(FILE_PATH_USES_WIN_SEPARATORS)
+const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("\\/");
+#else  // FILE_PATH_USES_WIN_SEPARATORS
+const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("/");
+#endif  // FILE_PATH_USES_WIN_SEPARATORS
+
+const FilePath::CharType FilePath::kCurrentDirectory[] = FILE_PATH_LITERAL(".");
+const FilePath::CharType FilePath::kParentDirectory[] = FILE_PATH_LITERAL("..");
+
+const FilePath::CharType FilePath::kExtensionSeparator = FILE_PATH_LITERAL('.');
+
+
+namespace {
+
+// If this FilePath contains a drive letter specification, returns the
+// position of the last character of the drive letter specification,
+// otherwise returns npos.  This can only be true on Windows, when a pathname
+// begins with a letter followed by a colon.  On other platforms, this always
+// returns npos.
+FilePath::StringType::size_type FindDriveLetter(
+    const FilePath::StringType& path) {
+#if defined(FILE_PATH_USES_DRIVE_LETTERS)
+  // This is dependent on an ASCII-based character set, but that's a
+  // reasonable assumption.  iswalpha can be too inclusive here.
+  if (path.length() >= 2 && path[1] == L':' &&
+      ((path[0] >= L'A' && path[0] <= L'Z') ||
+       (path[0] >= L'a' && path[0] <= L'z'))) {
+    return 1;
+  }
+#endif  // FILE_PATH_USES_DRIVE_LETTERS
+  return FilePath::StringType::npos;
+}
+
+bool IsPathAbsolute(const FilePath::StringType& path) {
+#if defined(FILE_PATH_USES_DRIVE_LETTERS)
+  FilePath::StringType::size_type letter = FindDriveLetter(path);
+  if (letter != FilePath::StringType::npos) {
+    // Look for a separator right after the drive specification.
+    return path.length() > letter + 1 &&
+        FilePath::IsSeparator(path[letter + 1]);
+  }
+  // Look for a pair of leading separators.
+  return path.length() > 1 &&
+      FilePath::IsSeparator(path[0]) && FilePath::IsSeparator(path[1]);
+#else  // FILE_PATH_USES_DRIVE_LETTERS
+  // Look for a separator in the first position.
+  return path.length() > 0 && FilePath::IsSeparator(path[0]);
+#endif  // FILE_PATH_USES_DRIVE_LETTERS
+}
+
+}  // namespace
+
+bool FilePath::IsSeparator(CharType character) {
+  for (size_t i = 0; i < arraysize(kSeparators) - 1; ++i) {
+    if (character == kSeparators[i]) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// libgen's dirname and basename aren't guaranteed to be thread-safe and aren't
+// guaranteed to not modify their input strings, and in fact are implemented
+// differently in this regard on different platforms.  Don't use them, but
+// adhere to their behavior.
+FilePath FilePath::DirName() const {
+  FilePath new_path(path_);
+  new_path.StripTrailingSeparatorsInternal();
+
+  // The drive letter, if any, always needs to remain in the output.  If there
+  // is no drive letter, as will always be the case on platforms which do not
+  // support drive letters, letter will be npos, or -1, so the comparisons and
+  // resizes below using letter will still be valid.
+  StringType::size_type letter = FindDriveLetter(new_path.path_);
+
+  StringType::size_type last_separator =
+      new_path.path_.find_last_of(kSeparators, StringType::npos,
+                                  arraysize(kSeparators) - 1);
+  if (last_separator == StringType::npos) {
+    // path_ is in the current directory.
+    new_path.path_.resize(letter + 1);
+  } else if (last_separator == letter + 1) {
+    // path_ is in the root directory.
+    new_path.path_.resize(letter + 2);
+  } else if (last_separator == letter + 2 &&
+             IsSeparator(new_path.path_[letter + 1])) {
+    // path_ is in "//" (possibly with a drive letter); leave the double
+    // separator intact indicating alternate root.
+    new_path.path_.resize(letter + 3);
+  } else if (last_separator != 0) {
+    // path_ is somewhere else, trim the basename.
+    new_path.path_.resize(last_separator);
+  }
+
+  new_path.StripTrailingSeparatorsInternal();
+  if (!new_path.path_.length())
+    new_path.path_ = kCurrentDirectory;
+
+  return new_path;
+}
+
+FilePath FilePath::BaseName() const {
+  FilePath new_path(path_);
+  new_path.StripTrailingSeparatorsInternal();
+
+  // The drive letter, if any, is always stripped.
+  StringType::size_type letter = FindDriveLetter(new_path.path_);
+  if (letter != StringType::npos) {
+    new_path.path_.erase(0, letter + 1);
+  }
+
+  // Keep everything after the final separator, but if the pathname is only
+  // one character and it's a separator, leave it alone.
+  StringType::size_type last_separator =
+      new_path.path_.find_last_of(kSeparators, StringType::npos,
+                                  arraysize(kSeparators) - 1);
+  if (last_separator != StringType::npos &&
+      last_separator < new_path.path_.length() - 1) {
+    new_path.path_.erase(0, last_separator + 1);
+  }
+
+  return new_path;
+}
+
+FilePath::StringType FilePath::Extension() const {
+  // BaseName() calls StripTrailingSeparators, so cases like /foo.baz/// work.
+  StringType base = BaseName().value();
+
+  // Special case "." and ".."
+  if (base == kCurrentDirectory || base == kParentDirectory)
+    return StringType();
+
+  const StringType::size_type last_dot = base.rfind(kExtensionSeparator);
+  if (last_dot == StringType::npos)
+    return StringType();
+  return StringType(base, last_dot);
+}
+
+FilePath FilePath::RemoveExtension() const {
+  StringType ext = Extension();
+  // It's important to check Extension() since that verifies that the
+  // kExtensionSeparator actually appeared in the last path component.
+  if (ext.empty())
+    return FilePath(path_);
+  // Since Extension() verified that the extension is in fact in the last path
+  // component, this substr will effectively strip trailing separators.
+  const StringType::size_type last_dot = path_.rfind(kExtensionSeparator);
+  return FilePath(path_.substr(0, last_dot));
+}
+
+FilePath FilePath::InsertBeforeExtension(const StringType& suffix) const {
+  if (suffix.empty())
+    return FilePath(path_);
+
+  if (path_.empty())
+    return FilePath();
+
+  StringType base = BaseName().value();
+  if (base.empty())
+    return FilePath();
+  if (*(base.end() - 1) == kExtensionSeparator) {
+    // Special case "." and ".."
+    if (base == kCurrentDirectory || base == kParentDirectory) {
+      return FilePath();
+    }
+  }
+
+  StringType ext = Extension();
+  StringType ret = RemoveExtension().value();
+  ret.append(suffix);
+  ret.append(ext);
+  return FilePath(ret);
+}
+
+FilePath FilePath::ReplaceExtension(const StringType& extension) const {
+  if (path_.empty())
+    return FilePath();
+
+  StringType base = BaseName().value();
+  if (base.empty())
+    return FilePath();
+  if (*(base.end() - 1) == kExtensionSeparator) {
+    // Special case "." and ".."
+    if (base == kCurrentDirectory || base == kParentDirectory) {
+      return FilePath();
+    }
+  }
+
+  FilePath no_ext = RemoveExtension();
+  // If the new extension is "" or ".", then just remove the current extension.
+  if (extension.empty() || extension == StringType(1, kExtensionSeparator))
+    return no_ext;
+
+  StringType str = no_ext.value();
+  if (extension[0] != kExtensionSeparator)
+    str.append(1, kExtensionSeparator);
+  str.append(extension);
+  return FilePath(str);
+}
+
+FilePath FilePath::Append(const StringType& component) const {
+  DCHECK(!IsPathAbsolute(component));
+  if (path_.compare(kCurrentDirectory) == 0) {
+    // Append normally doesn't do any normalization, but as a special case,
+    // when appending to kCurrentDirectory, just return a new path for the
+    // component argument.  Appending component to kCurrentDirectory would
+    // serve no purpose other than needlessly lengthening the path, and
+    // it's likely in practice to wind up with FilePath objects containing
+    // only kCurrentDirectory when calling DirName on a single relative path
+    // component.
+    return FilePath(component);
+  }
+
+  FilePath new_path(path_);
+  new_path.StripTrailingSeparatorsInternal();
+
+  // Don't append a separator if the path is empty (indicating the current
+  // directory) or if the path component is empty (indicating nothing to
+  // append).
+  if (component.length() > 0 && new_path.path_.length() > 0) {
+
+    // Don't append a separator if the path still ends with a trailing
+    // separator after stripping (indicating the root directory).
+    if (!IsSeparator(new_path.path_[new_path.path_.length() - 1])) {
+
+      // Don't append a separator if the path is just a drive letter.
+      if (FindDriveLetter(new_path.path_) + 1 != new_path.path_.length()) {
+        new_path.path_.append(1, kSeparators[0]);
+      }
+    }
+  }
+
+  new_path.path_.append(component);
+  return new_path;
+}
+
+FilePath FilePath::Append(const FilePath& component) const {
+  return Append(component.value());
+}
+
+FilePath FilePath::AppendASCII(const std::string& component) const {
+  DCHECK(IsStringASCII(component));
+#if defined(OS_WIN)
+  return Append(ASCIIToWide(component));
+#elif defined(OS_POSIX)
+  return Append(component);
+#endif
+}
+
+bool FilePath::IsAbsolute() const {
+  return IsPathAbsolute(path_);
+}
+
+#if defined(OS_POSIX)
+// See file_path.h for a discussion of the encoding of paths on POSIX
+// platforms.  These *Hack() functions are not quite correct, but they're
+// only temporary while we fix the remainder of the code.
+// Remember to remove the #includes at the top when you remove these.
+
+// static
+FilePath FilePath::FromWStringHack(const std::wstring& wstring) {
+  return FilePath(base::SysWideToNativeMB(wstring));
+}
+std::wstring FilePath::ToWStringHack() const {
+  return base::SysNativeMBToWide(path_);
+}
+#elif defined(OS_WIN)
+// static
+FilePath FilePath::FromWStringHack(const std::wstring& wstring) {
+  return FilePath(wstring);
+}
+std::wstring FilePath::ToWStringHack() const {
+  return path_;
+}
+#endif
+
+void FilePath::OpenInputStream(std::ifstream& stream) const {
+  stream.open(
+#ifndef __MINGW32__
+              path_.c_str(),
+#else
+              base::SysWideToNativeMB(path_).c_str(),
+#endif
+              std::ios::in | std::ios::binary);
+}
+
+FilePath FilePath::StripTrailingSeparators() const {
+  FilePath new_path(path_);
+  new_path.StripTrailingSeparatorsInternal();
+
+  return new_path;
+}
+
+void FilePath::StripTrailingSeparatorsInternal() {
+  // If there is no drive letter, start will be 1, which will prevent stripping
+  // the leading separator if there is only one separator.  If there is a drive
+  // letter, start will be set appropriately to prevent stripping the first
+  // separator following the drive letter, if a separator immediately follows
+  // the drive letter.
+  StringType::size_type start = FindDriveLetter(path_) + 2;
+
+  StringType::size_type last_stripped = StringType::npos;
+  for (StringType::size_type pos = path_.length();
+       pos > start && IsSeparator(path_[pos - 1]);
+       --pos) {
+    // If the string only has two separators and they're at the beginning,
+    // don't strip them, unless the string began with more than two separators.
+    if (pos != start + 1 || last_stripped == start + 2 ||
+        !IsSeparator(path_[start - 1])) {
+      path_.resize(pos - 1);
+      last_stripped = pos;
+    }
+  }
+}