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@ -6,98 +6,177 @@ defmodule AutoLinker.Parser do |
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alias AutoLinker.Builder |
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@doc """ |
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Parse the given string. |
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Parse the given string, identifying items to link. |
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Parses the string, replacing the matching urls with an html link. |
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Parses the string, replacing the matching urls and phone numbers with an html link. |
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## Examples |
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iex> AutoLinker.Parser.parse("Check out google.com") |
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"Check out <a href='http://google.com' class='auto-linker' target='_blank' rel='noopener noreferrer'>google.com</a>" |
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iex> AutoLinker.Parser.parse("call me at x9999", phone: true) |
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~s{call me at <a href="#" class="phone-number" data-phone="9999">x9999</a>} |
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iex> AutoLinker.Parser.parse("or at home on 555.555.5555", phone: true) |
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~s{or at home on <a href="#" class="phone-number" data-phone="5555555555">555.555.5555</a>} |
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iex> AutoLinker.Parser.parse(", work (555) 555-5555", phone: true) |
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~s{, work <a href="#" class="phone-number" data-phone="5555555555">(555) 555-5555</a>} |
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""" |
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@match_dots ~r/\.\.+/ |
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# @invalid_url ~r/\.\.+/ |
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@invalid_url ~r/(\.\.+)|(^(\d+\.){1,2}\d+$)/ |
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@match_url ~r{^[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~:/?#[\]@!\$&'\(\)\*\+,;=.]+$} |
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@match_url ~r{^[\w\.-]+(?:\.[\w\.-]+)+[\w\-\._~:/?#[\]@!\$&'\(\)\*\+,;=.]+$} |
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@match_scheme ~r{^(?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~:/?#[\]@!\$&'\(\)\*\+,;=.]+$} |
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@match_phone ~r"((?:\+|00)[17](?:[ \-\.])?|(?:\+|00)[1-9]\d{0,2}(?:[ \-\.])?|(?:\+|00)1[\-\.]\d{3}(?:[ \-\.])?)?(0\d|\([0-9]{3}\)|[1-9]{0,3})(?:((?:[ \-\.])[0-9]{2}){4}|((?:[0-9]{2}){4})|((?:[ \-\.])[0-9]{3}(?:[ \-\.])[0-9]{4})|([0-9]{7}))|(x[0-9][0-9]+)" |
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@default_opts ~w(url)a |
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def parse(text, opts \\ %{}) |
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def parse(text, list) when is_list(list), do: parse(text, Enum.into(list, %{})) |
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def parse(text, opts) do |
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config = |
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:auto_linker |
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|> Application.get_env(:opts, []) |
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|> Enum.into(%{}) |
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config = |
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:auto_linker |
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|> Application.get_env(:attributes, []) |
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|> Enum.into(config) |
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opts = |
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Enum.reduce @default_opts, opts, fn opt, acc -> |
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if is_nil(opts[opt]) and is_nil(config[opt]) do |
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Map.put acc, opt, true |
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else |
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acc |
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end |
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end |
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do_parse text, Map.merge(config, opts) |
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end |
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defp do_parse(text, %{phone: false} = opts), do: do_parse(text, Map.delete(opts, :phone)) |
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defp do_parse(text, %{url: false} = opts), do: do_parse(text, Map.delete(opts, :url)) |
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defp do_parse(text, %{phone: _} = opts) do |
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text |
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|> do_parse(false, opts, {"", "", :parsing}, &check_and_link_phone/3) |
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|> do_parse(Map.delete(opts, :phone)) |
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end |
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defp do_parse(text, %{url: _} = opts) do |
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if (exclude = Map.get(opts, :exclude_pattern, false)) && String.starts_with?(text, exclude) do |
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text |
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else |
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parse(text, Map.get(opts, :scheme, false), opts, {"", "", :parsing}) |
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do_parse(text, Map.get(opts, :scheme, false), opts, {"", "", :parsing}, &check_and_link/3) |
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end |
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|> do_parse(Map.delete(opts, :url)) |
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end |
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defp do_parse(text, _), do: text |
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# state = {buffer, acc, state} |
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defp parse("", _scheme, _opts ,{"", acc, _}), |
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defp do_parse("", _scheme, _opts ,{"", acc, _}, _handler), |
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do: acc |
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defp parse("", scheme, opts ,{buffer, acc, _}), |
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do: acc <> check_and_link(buffer, scheme, opts) |
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defp parse("<" <> text, scheme, opts, {"", acc, :parsing}), |
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do: parse(text, scheme, opts, {"<", acc, {:open, 1}}) |
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defp do_parse("", scheme, opts ,{buffer, acc, _}, handler), |
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do: acc <> handler.(buffer, scheme, opts) |
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defp parse(">" <> text, scheme, opts, {buffer, acc, {:attrs, level}}), |
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do: parse(text, scheme, opts, {"", acc <> buffer <> ">", {:html, level}}) |
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defp do_parse("<" <> text, scheme, opts, {"", acc, :parsing}, handler), |
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do: do_parse(text, scheme, opts, {"<", acc, {:open, 1}}, handler) |
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defp parse(<<ch::8>> <> text, scheme, opts, {"", acc, {:attrs, level}}), |
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do: parse(text, scheme, opts, {"", acc <> <<ch::8>>, {:attrs, level}}) |
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defp do_parse(">" <> text, scheme, opts, {buffer, acc, {:attrs, level}}, handler), |
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do: do_parse(text, scheme, opts, {"", acc <> buffer <> ">", {:html, level}}, handler) |
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defp parse("</" <> text, scheme, opts, {buffer, acc, {:html, level}}), |
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do: parse(text, scheme, opts, |
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{"", acc <> check_and_link(buffer, scheme, opts) <> "</", {:close, level}}) |
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defp do_parse(<<ch::8>> <> text, scheme, opts, {"", acc, {:attrs, level}}, handler), |
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do: do_parse(text, scheme, opts, {"", acc <> <<ch::8>>, {:attrs, level}}, handler) |
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defp parse(">" <> text, scheme, opts, {buffer, acc, {:close, 1}}), |
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do: parse(text, scheme, opts, {"", acc <> buffer <> ">", :parsing}) |
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defp do_parse("</" <> text, scheme, opts, {buffer, acc, {:html, level}}, handler), |
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do: do_parse(text, scheme, opts, |
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{"", acc <> handler.(buffer, scheme, opts) <> "</", {:close, level}}, handler) |
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defp parse(">" <> text, scheme, opts, {buffer, acc, {:close, level}}), |
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do: parse(text, scheme, opts, {"", acc <> buffer <> ">", {:html, level - 1}}) |
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defp do_parse(">" <> text, scheme, opts, {buffer, acc, {:close, 1}}, handler), |
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do: do_parse(text, scheme, opts, {"", acc <> buffer <> ">", :parsing}, handler) |
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defp parse(" " <> text, scheme, opts, {buffer, acc, {:open, level}}), |
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do: parse(text, scheme, opts, {"", acc <> buffer <> " ", {:attrs, level}}) |
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defp parse("\n" <> text, scheme, opts, {buffer, acc, {:open, level}}), |
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do: parse(text, scheme, opts, {"", acc <> buffer <> "\n", {:attrs, level}}) |
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defp do_parse(">" <> text, scheme, opts, {buffer, acc, {:close, level}}, handler), |
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do: do_parse(text, scheme, opts, {"", acc <> buffer <> ">", {:html, level - 1}}, handler) |
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defp do_parse(" " <> text, scheme, opts, {buffer, acc, {:open, level}}, handler), |
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do: do_parse(text, scheme, opts, {"", acc <> buffer <> " ", {:attrs, level}}, handler) |
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defp do_parse("\n" <> text, scheme, opts, {buffer, acc, {:open, level}}, handler), |
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do: do_parse(text, scheme, opts, {"", acc <> buffer <> "\n", {:attrs, level}}, handler) |
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# default cases where state is not important |
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defp parse(" " <> text, scheme, opts, {buffer, acc, state}), |
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do: parse(text, scheme, opts, |
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{"", acc <> check_and_link(buffer, scheme, opts) <> " ", state}) |
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defp parse("\n" <> text, scheme, opts, {buffer, acc, state}), |
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do: parse(text, scheme, opts, |
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{"", acc <> check_and_link(buffer, scheme, opts) <> "\n", state}) |
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defp do_parse(" " <> text, scheme, %{phone: _} = opts, {buffer, acc, state}, handler), |
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do: do_parse(text, scheme, opts, {buffer <> " ", acc, state}, handler) |
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defp do_parse(" " <> text, scheme, opts, {buffer, acc, state}, handler), |
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do: do_parse(text, scheme, opts, |
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{"", acc <> handler.(buffer, scheme, opts) <> " ", state}, handler) |
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defp parse(<<ch::8>> <> text, scheme, opts, {buffer, acc, state}), |
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do: parse(text, scheme, opts, {buffer <> <<ch::8>>, acc, state}) |
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defp do_parse("\n" <> text, scheme, opts, {buffer, acc, state}, handler), |
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do: do_parse(text, scheme, opts, |
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{"", acc <> handler.(buffer, scheme, opts) <> "\n", state}, handler) |
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defp do_parse(<<ch::8>>, scheme, opts, {buffer, acc, state}, handler), |
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do: do_parse("", scheme, opts, |
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{"", acc <> handler.(buffer <> <<ch::8>>, scheme, opts), state}, handler) |
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defp check_and_link(buffer, scheme, opts) do |
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defp do_parse(<<ch::8>> <> text, scheme, opts, {buffer, acc, state}, handler), |
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do: do_parse(text, scheme, opts, {buffer <> <<ch::8>>, acc, state}, handler) |
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def check_and_link(buffer, scheme, opts) do |
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buffer |
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|> is_url?(scheme) |
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|> link_url(buffer, opts) |
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end |
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def check_and_link_phone(buffer, _, opts) do |
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buffer |
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|> match_phone |
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|> link_phone(buffer, opts) |
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end |
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@doc false |
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def is_url?(buffer, true) do |
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if Regex.match? @match_dots, buffer do |
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if Regex.match? @invalid_url, buffer do |
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false |
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else |
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Regex.match? @match_scheme, buffer |
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end |
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end |
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def is_url?(buffer, _) do |
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if Regex.match? @match_dots, buffer do |
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# IO.puts "..... '#{buffer}'" |
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if Regex.match? @invalid_url, buffer do |
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false |
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else |
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Regex.match? @match_url, buffer |
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end |
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end |
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@doc false |
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def match_phone(buffer) do |
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case Regex.scan @match_phone, buffer do |
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[] -> nil |
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other -> other |
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end |
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end |
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def link_phone(nil, buffer, _), do: buffer |
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def link_phone(list, buffer, opts) do |
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Builder.create_phone_link list, buffer, opts |
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end |
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@doc false |
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def link_url(true, buffer, opts) do |
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Builder.create_link(buffer, opts) |
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