Module: Libcall::Fiddley::Utils

Defined in:
lib/libcall/fiddley.rb

Class Method Summary collapse

Class Method Details

.array2str(type, array) ⇒ Object

Convert Ruby array of numbers to a binary string for the given type



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# File 'lib/libcall/fiddley.rb', line 70

def array2str(type, array)
  array.pack("#{array_pack_template(type)}*")
end

.array_pack_template(type) ⇒ Object

Pack template for array values of given base type.



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# File 'lib/libcall/fiddley.rb', line 63

def array_pack_template(type)
  Libcall::TypeMap.pack_template(type)
rescue StandardError => e
  raise Libcall::Error, "Unsupported array base type: #{type} (#{e.message})"
end

.sizeof(type) ⇒ Object

Return size in bytes for a given type symbol.



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# File 'lib/libcall/fiddley.rb', line 49

def sizeof(type)
  Libcall::TypeMap.sizeof(type)
rescue StandardError => e
  raise Libcall::Error, "unknown type for sizeof: #{type} (#{e.message})"
end

.str2array(type, str) ⇒ Object

Convert binary string to Ruby array of the given type



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# File 'lib/libcall/fiddley.rb', line 75

def str2array(type, str)
  str.unpack("#{array_pack_template(type)}*")
end

.to_fiddle_type(type) ⇒ Object

Convert a type symbol to a Fiddle type constant.



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# File 'lib/libcall/fiddley.rb', line 56

def to_fiddle_type(type)
  Libcall::TypeMap.to_fiddle_type(type)
rescue StandardError => e
  raise Libcall::Error, "unknown type for to_fiddle_type: #{type} (#{e.message})"
end