Module: RIO::IF::File

Included in:
Rio
Defined in:
lib/rio/if/file.rb

Instance Method Summary collapse

Instance Method Details

#clear ⇒ Object

Calls IF::File#truncate(0)



79
 
# File 'lib/rio/if/file.rb', line 79

def clear() target.clear(); self end

#rm ⇒ Object

Calls FileUtils#rm

Deletes the referenced file, returning the Rio. Raises an exception on any error.

See also IF::Grande#delete, IF::Grande#delete!, IF::Dir#rmdir.



46
 
# File 'lib/rio/if/file.rb', line 46

def rm() target.rm(); self end

#touch ⇒ Object

Calls FileUtils#touch

Updates modification time (mtime) and access time (atime) of a Rio. A file is created if it doesn’t exist.



54
 
# File 'lib/rio/if/file.rb', line 54

def touch() target.touch(); self end

#truncate(sz = pos()) ⇒ Object

Calls File#truncate

Truncates a file referenced by a Rio to be at most sz bytes long. Not available on all platforms.

f = rio("out")
f.print!("1234567890")
f.size                     #=> 10
f.truncate(5)
f.size()                   #=> 5

If called with no arguments, truncates the Rio at the value returned by IF::FileOrDir#pos().

f.read(2)
f.truncate.size            #=> 2
f.contents                 #=> "12"

Returns the Rio



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# File 'lib/rio/if/file.rb', line 75

def truncate(sz=pos()) target.truncate(sz); self end