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: / opt / td-agent / embedded / lib / ruby / gems / 2.1.0 / gems / fluentd-0.12.40 / lib / fluent / plugin /
Filename : file_util.rb
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#
# Fluentd
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.
#

module Fluent
  module FileUtil
    # Check file is writable if file exists
    # Check directory is writable if file does not exist
    #
    # @param [String] path File path
    # @return [Boolean] file is writable or not
    def writable?(path)
      return false if File.directory?(path)
      return File.writable?(path) if File.exist?(path)

      dirname = File.dirname(path)
      return false if !File.directory?(dirname)
      File.writable?(dirname)
    end
    module_function :writable?

    # Check file is writable in conjunction wtih mkdir_p(dirname(path))
    #
    # @param [String] path File path
    # @return [Boolean] file writable or not
    def writable_p?(path)
      return false if File.directory?(path)
      return File.writable?(path) if File.exist?(path)

      dirname = File.dirname(path)
      until File.exist?(dirname)
        dirname = File.dirname(dirname)
      end

      return false if !File.directory?(dirname)
      File.writable?(dirname)
    end
    module_function :writable_p?
  end
end