posexional v0.4.2 Posexional.Field.Value

this module represent a single field in a row of a positional file

Link to this section Summary

Link to this section Functions

Link to this function new(name, size, opts \\ [])
new(atom, integer, Keyword.t) :: %Posexional.Field.Value{alignment: term, default: term, filler: term, name: term, size: term}
Link to this function write(field, value)
write(%Posexional.Field.Value{alignment: term, default: term, filler: term, name: term, size: term}, binary) :: binary

outputs a field

Examples

iex> Posexional.Field.Value.write(Posexional.Field.Value.new(:test, 5), "test")
"test "

iex> Posexional.Field.Value.write(Posexional.Field.Value.new(:test, 5), "too long")
** (RuntimeError) The value too long is too long for the test field. The maximum size is 5 while the value is 8

iex> Posexional.Field.Value.write(Posexional.Field.Value.new(:test, 10), "test")
"test      "

iex> Posexional.Field.Value.write(Posexional.Field.Value.new(:test, 10), "test")
"test      "

iex> Posexional.Field.Value.write(Posexional.Field.Value.new(:test, 10, filler: ?0), "test")
"test000000"

iex> Posexional.Field.Value.write(Posexional.Field.Value.new(:test, 10, filler: ?0, alignment: :right), "test")
"000000test"

iex> Posexional.Field.Value.write(Posexional.Field.Value.new(:test, 10), 50)
** (RuntimeError) The value provided for the test field doesn't seem to be a string