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zoi
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Zoi is a schema validation library for Elixir, designed to provide a simple and flexible way to define and validate data.
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lib/zoi/regexes.ex
defmodule Zoi.Regexes do
@moduledoc false
@doc """
Regex pattern to match a valid email address.
"""
def email() do
~r/^(?!\.)(?!.*\.\.)([a-z0-9_'+\-\.]*)[a-z0-9_+\-]@([a-z0-9][a-z0-9\-]*\.)+[a-z]{2,}$/i
end
@doc """
Regex pattern based on on https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/email
"""
def html5_email() do
~r/^[\w.!#$%&'*+\/=?^`{|}~-]+@[a-z\d](?:[a-z\d-]{0,61}[a-z\d])?(?:\.[a-z\d](?:[a-z\d-]{0,61}[a-z\d])?)*$/i
end
@doc """
Regex pattern based on RFC 5322 official standard
"""
def rfc5322_email() do
~r/^(?:"[^"]+"|[!#-'*+\/-9=?A-Z^_`a-z{|}~]+)@(?:[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?\.)+[A-Za-z]{2,63}$/
end
@doc """
Regex pattern based on phoenix implementation: https://github.com/phoenixframework/phoenix/blob/main/priv/templates/phx.gen.auth/schema.ex#L38C34-L38C59
"""
def simple_email() do
~r/^[^@,;\s]+@[^@,;\s]+$/
end
@doc """
Regex pattern to match only uppercase letters.
"""
def upcase() do
~r/^[^a-z]*$/
end
@doc """
Regex pattern to match only lowercase letters.
"""
def downcase() do
~r/^[^A-Z]*$/
end
@doc """
Regex pattern to match a valid UUID.
"""
def uuid(opts \\ []) do
uuid_versions = ["v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8"]
version = opts[:version]
cond do
version == nil ->
~r/^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12})$/
version in uuid_versions ->
~r/^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[#{version}][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12})$/
true ->
raise ArgumentError, "Invalid UUID version: #{version}"
end
end
@doc """
Regex pattern to match a valid URL.
"""
def url() do
~r/^(https?|mailto):\/\/(([\w-]+\.)+[\w-]+|localhost|127(?:\.\d{1,3}){3})(:\d+)?(\/[\w\-._~:\/?#[\]@!$&'()*+,;=]*)?$/i
end
@doc """
Regex pattern to match a valid IPv4 address.
from https://stackoverflow.com/questions/5284147/validating-ipv4-addresses-with-regexp
"""
def ipv4() do
~r/^((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\.?\b){4}$/
end
@doc """
Regex pattern to match a valid IPv6 address.
from https://stackoverflow.com/questions/53497/regular-expression-that-matches-valid-ipv6-addresses
"""
def ipv6() do
~r/(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))/
end
@doc """
Regex pattern to match hexadecimal
"""
def hex() do
~r/^[0-9a-fA-F]*$/
end
end