Module: FunWith::Files::FileRequirements

Defined in:
lib/fun_with/files/file_requirements.rb

Instance Method Summary collapse

Instance Method Details

#needs_to_be(*requirements) ⇒ Object 



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# File 'lib/fun_with/files/file_requirements.rb', line 44

def needs_to_be( *requirements )
  for requirement in requirements
    case requirement
    when :exist
      self.needs_to_exist
    when :readable
      self.needs_to_be_readable
    when :writable
      self.needs_to_be_writable
    when :executable
      self.needs_to_be_executable
    when :empty
      self.needs_to_be_empty
    when :directory
      self.needs_to_be_a_directory
    when :file
      self.needs_to_be_a_file
    else
      warn "Did not understand file.needs_to_be constraint: #{arg}"
    end
  end
end

#needs_to_be_a_directory(error_msg = "Path is not a directory") ⇒ Object 



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# File 'lib/fun_with/files/file_requirements.rb', line 39

def needs_to_be_a_directory error_msg = "Path is not a directory"
  self.needs_to_exist( error_msg + " (does not exist)" )
  _raise_error_if_not self.directory?, error_msg, Errno::ENOTDIR
end

#needs_to_be_a_file(error_msg = "Path is not a file") ⇒ Object 



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# File 'lib/fun_with/files/file_requirements.rb', line 8

def needs_to_be_a_file error_msg = "Path is not a file"
  self.needs_to_exist( error_msg + " (does not exist)" )
  _raise_error_if_not self.file?, error_msg, Errno::ENOENT
end

#needs_to_be_empty(error_msg = "Path needs to be empty") ⇒ Object

returns a different code depending on whether the path is a file or a directory.



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# File 'lib/fun_with/files/file_requirements.rb', line 30

def needs_to_be_empty error_msg = "Path needs to be empty"
  self.needs_to_exist( error_msg + " (does not exist)" )
  error_class = Errno::EOWNERDEAD                         # it's as good a code as any
  error_class = Errno::ENOTEMPTY       if self.directory?
  error_class = Errors::FileNotEmpty   if self.file?      # there's no libc error for "file oughta be empty"
  
  _raise_error_if_not self.empty?, error_msg, error_class
end

#needs_to_be_executable(error_msg = "Path is not executable") ⇒ Object 



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# File 'lib/fun_with/files/file_requirements.rb', line 23

def needs_to_be_executable error_msg = "Path is not executable"
  self.needs_to_exist( error_msg + " (does not exist)" )
  _raise_error_if_not self.executable?, error_msg, Errno::ENOEXEC
end

#needs_to_be_readable(error_msg = "Path is not readable") ⇒ Object 



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# File 'lib/fun_with/files/file_requirements.rb', line 13

def needs_to_be_readable error_msg = "Path is not readable"
  self.needs_to_exist( error_msg + " (does not exist)" )
  _raise_error_if_not self.writable?, error_msg, Errno::EPERM
end

#needs_to_be_writable(error_msg = "Path is not writable") ⇒ Object 



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# File 'lib/fun_with/files/file_requirements.rb', line 18

def needs_to_be_writable error_msg = "Path is not writable"
  self.needs_to_exist( error_msg + " (does not exist)" )
  _raise_error_if_not self.writable?, error_msg, Errno::EPERM
end

#needs_to_exist(error_msg = "Path does not exist") ⇒ Object 



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# File 'lib/fun_with/files/file_requirements.rb', line 4

def needs_to_exist error_msg = "Path does not exist"
  _raise_error_if_not self.exist?, error_msg, Errno::ENOENT
end