Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/ffi/win32/extensions.rb

Instance Method Summary collapse

Instance Method Details

#read_wide_string ⇒ Object

Read a wide character string up until the first double null, and delete any remaining null characters.



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# File 'lib/ffi/win32/extensions.rb', line 130

def read_wide_string
  self[/^.*?(?=\x00{2})/].delete(0.chr)
end

#wincode ⇒ Object

Convenience method for converting strings to UTF-16LE for wide character functions that require it.



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# File 'lib/ffi/win32/extensions.rb', line 112

def wincode
  (tr(File::SEPARATOR, File::ALT_SEPARATOR) + 0.chr).encode("UTF-16LE")
end

#wstrip ⇒ Object

Read a wide character string up until the first double null, and delete any remaining null characters. If this fails (typically because there are only null characters) then nil is returned instead.



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# File 'lib/ffi/win32/extensions.rb', line 120

def wstrip
  force_encoding("UTF-16LE").encode("UTF-8", invalid: :replace, undef: :replace)
    .split("\x00")[0].encode(Encoding.default_external)
rescue
  nil
end