Method GenerateUniqueFileName

tests/gtest/gtest-all.cc:9516–9525

Returns a pathname for a file that does not currently exist. The pathname will be directory/base_name.extension or directory/base_name_ .extension if directory/base_name.extension already exists. The number will be incremented until a pathname is found that does not already exist. Examples: 'dir/foo_test.xml' or 'dir/foo_test_1.xml'. There could be a race condition if two or more processes

// There could be a race condition if two or more processes are calling this
// function at the same time -- they could both pick the same filename.
FilePath FilePath::GenerateUniqueFileName(const FilePath& directory,
                                          const FilePath& base_name,
                                          const char* extension) {
  FilePath full_pathname;
  int number = 0;
  do {
    full_pathname.Set(MakeFileName(directory, base_name, number++, extension));
  } while (full_pathname.FileOrDirectoryExists());
  return full_pathname;
}

// Returns true if FilePath ends with a path separator, which indicates that
// it is intended to represent a directory. Returns false otherwise.