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Map, Calendar, Digits, Decimal, HTTP, Macro, Math, and String helpers for ex_cldr.
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lib/cldr/utils/json.ex
if Code.ensure_loaded?(:json) do
defmodule Cldr.Json do
@moduledoc """
A wrapper for the OTP 27 :json module.
It implements a `decode!/1` function that wraps
`:json.decode/1` with `decode!/1` so that its
compatible with the calling conventions of
Elixir - which is used by `ex_cldr`.
This allows configuration such as:
```elixir
config :ex_cldr,
json_library: Cldr.Json
```
"""
@doc since: "2.27.0"
@doc """
Implements a Jason-compatible decode!/1,2 function suitable
for decoding CLDR json data.
### Example
iex> Cldr.Json.decode!("{\\"foo\\": 1}")
%{"foo" => 1}
iex> Cldr.Json.decode!("{\\"foo\\": 1}", keys: :atoms)
%{foo: 1}
"""
def decode!(string) when is_binary(string) do
{json, :ok, ""} = :json.decode(string, :ok, %{null: nil})
json
end
def decode!(charlist) when is_list(charlist) do
charlist
|> :erlang.iolist_to_binary()
|> decode!()
end
def decode!(string, [keys: :atoms]) when is_binary(string) do
push = fn key, value, acc ->
[{String.to_atom(key), value} | acc]
end
decoders = %{
null: nil,
object_push: push
}
{json, :ok, ""} = :json.decode(string, :ok, decoders)
json
end
def decode!(charlist, options) when is_list(charlist) do
charlist
|> :erlang.iolist_to_binary()
|> decode!(options)
end
end
end