base: Extract FileEnumerator out of file_util.h

base/file_util_posix.cc

Index: base/file_util_posix.cc
diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index c7014b637718ce7333c4bebd3b63192fed4a5dea..eae5b1277a7745584babd8aa15dbb359917c115b 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -709,156 +709,6 @@ bool SetCurrentDirectory(const FilePath& path) {
   return !ret;
 }
 
-///////////////////////////////////////////////
-// FileEnumerator
-
-FileEnumerator::FileEnumerator(const FilePath& root_path,
-                               bool recursive,
-                               int file_type)
-    : current_directory_entry_(0),
-      root_path_(root_path),
-      recursive_(recursive),
-      file_type_(file_type) {
-  // INCLUDE_DOT_DOT must not be specified if recursive.
-  DCHECK(!(recursive && (INCLUDE_DOT_DOT & file_type_)));
-  pending_paths_.push(root_path);
-}
-
-FileEnumerator::FileEnumerator(const FilePath& root_path,
-                               bool recursive,
-                               int file_type,
-                               const FilePath::StringType& pattern)
-    : current_directory_entry_(0),
-      root_path_(root_path),
-      recursive_(recursive),
-      file_type_(file_type),
-      pattern_(root_path.Append(pattern).value()) {
-  // INCLUDE_DOT_DOT must not be specified if recursive.
-  DCHECK(!(recursive && (INCLUDE_DOT_DOT & file_type_)));
-  // The Windows version of this code appends the pattern to the root_path,
-  // potentially only matching against items in the top-most directory.
-  // Do the same here.
-  if (pattern.empty())
-    pattern_ = FilePath::StringType();
-  pending_paths_.push(root_path);
-}
-
-FileEnumerator::~FileEnumerator() {
-}
-
-FilePath FileEnumerator::Next() {
-  ++current_directory_entry_;
-
-  // While we've exhausted the entries in the current directory, do the next
-  while (current_directory_entry_ >= directory_entries_.size()) {
-    if (pending_paths_.empty())
-      return FilePath();
-
-    root_path_ = pending_paths_.top();
-    root_path_ = root_path_.StripTrailingSeparators();
-    pending_paths_.pop();
-
-    std::vector<DirectoryEntryInfo> entries;
-    if (!ReadDirectory(&entries, root_path_, file_type_ & SHOW_SYM_LINKS))
-      continue;
-
-    directory_entries_.clear();
-    current_directory_entry_ = 0;
-    for (std::vector<DirectoryEntryInfo>::const_iterator
-        i = entries.begin(); i != entries.end(); ++i) {
-      FilePath full_path = root_path_.Append(i->filename);
-      if (ShouldSkip(full_path))
-        continue;
-
-      if (pattern_.size() &&
-          fnmatch(pattern_.c_str(), full_path.value().c_str(), FNM_NOESCAPE))
-        continue;
-
-      if (recursive_ && S_ISDIR(i->stat.st_mode))
-        pending_paths_.push(full_path);
-
-      if ((S_ISDIR(i->stat.st_mode) && (file_type_ & DIRECTORIES)) ||
-          (!S_ISDIR(i->stat.st_mode) && (file_type_ & FILES)))
-        directory_entries_.push_back(*i);
-    }
-  }
-
-  return root_path_.Append(directory_entries_[current_directory_entry_
-      ].filename);
-}
-
-void FileEnumerator::GetFindInfo(FindInfo* info) {
-  DCHECK(info);
-
-  if (current_directory_entry_ >= directory_entries_.size())
-    return;
-
-  DirectoryEntryInfo* cur_entry = &directory_entries_[current_directory_entry_];
-  memcpy(&(info->stat), &(cur_entry->stat), sizeof(info->stat));
-  info->filename.assign(cur_entry->filename.value());
-}
-
-// static
-bool FileEnumerator::IsDirectory(const FindInfo& info) {
-  return S_ISDIR(info.stat.st_mode);
-}
-
-// static
-FilePath FileEnumerator::GetFilename(const FindInfo& find_info) {
-  return FilePath(find_info.filename);
-}
-
-// static
-int64 FileEnumerator::GetFilesize(const FindInfo& find_info) {
-  return find_info.stat.st_size;
-}
-
-// static
-base::Time FileEnumerator::GetLastModifiedTime(const FindInfo& find_info) {
-  return base::Time::FromTimeT(find_info.stat.st_mtime);
-}
-
-bool FileEnumerator::ReadDirectory(std::vector<DirectoryEntryInfo>* entries,
-                                   const FilePath& source, bool show_links) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  DIR* dir = opendir(source.value().c_str());
-  if (!dir)
-    return false;
-
-#if !defined(OS_LINUX) && !defined(OS_MACOSX) && !defined(OS_BSD) && \
-    !defined(OS_SOLARIS) && !defined(OS_ANDROID)
-  #error Port warning: depending on the definition of struct dirent, \
-         additional space for pathname may be needed
-#endif
-
-  struct dirent dent_buf;
-  struct dirent* dent;
-  while (readdir_r(dir, &dent_buf, &dent) == 0 && dent) {
-    DirectoryEntryInfo info;
-    info.filename = FilePath(dent->d_name);
-
-    FilePath full_name = source.Append(dent->d_name);
-    int ret;
-    if (show_links)
-      ret = lstat(full_name.value().c_str(), &info.stat);
-    else
-      ret = stat(full_name.value().c_str(), &info.stat);
-    if (ret < 0) {
-      // Print the stat() error message unless it was ENOENT and we're
-      // following symlinks.
-      if (!(errno == ENOENT && !show_links)) {
-        DPLOG(ERROR) << "Couldn't stat "
-                     << source.Append(dent->d_name).value();
-      }
-      memset(&info.stat, 0, sizeof(info.stat));
-    }
-    entries->push_back(info);
-  }
-
-  closedir(dir);
-  return true;
-}
-
 bool HasFileBeenModifiedSince(const FileEnumerator::FindInfo& find_info,
                               const base::Time& cutoff_time) {
   return static_cast<time_t>(find_info.stat.st_mtime) >= cutoff_time.ToTimeT();