barlix

v0.6.1

barlix v0.6.1 Barlix.EAN13 View Source

Implements EAN13.

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Functions

encode(value)

Encodes the given value using EAN13. The given code is validated first.

encode!(value)

Accepts the same arguments as encode/1 but raises on error.

get_code(values)
get_code(prefix, l, r)
validate(v)

Validate an EAN13 code.

Link to this section Functions

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encode(value) View Source 
encode(String.t()) :: {:error, String.t()} | {:ok, Barlix.code()}

Encodes the given value using EAN13. The given code is validated first.

Examples 

iex> Barlix.EAN13.encode("5449000096241")
{:ok, {:D1, [
1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1
]}}

iex> Barlix.EAN13.encode("5901234123450")
{:error, "validation failed: expected checksum digit 7 but received 0"}
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encode!(value) View Source 
encode!(String.t()) :: Barlix.code() | no_return()

Accepts the same arguments as encode/1 but raises on error.

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get_code(values) View Source 
get_code([non_neg_integer()]) :: {:ok, Barlix.code()}

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get_code(prefix, l, r) View Source 
get_code(non_neg_integer(), [non_neg_integer()], [non_neg_integer()]) ::
  {:ok, Barlix.code()}

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validate(v) View Source 
validate(String.t()) :: {:ok, [non_neg_integer()]} | {:error, String.t()}

Validate an EAN13 code.

Examples 

iex> Barlix.EAN13.validate("5449000096241")
{:ok, [5, 4, 4, 9, 0, 0, 0, 0, 9, 6, 2, 4, 1]}

iex> Barlix.EAN13.validate("5901234123450")
{:error, "validation failed: expected checksum digit 7 but received 0"}