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io_ansi_table
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Writes data to "stdio" in a table with borders and colors. Can choose a table style to change the look of the table.
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lib/io/ansi/table/heading.ex
defmodule IO.ANSI.Table.Heading do
# @moduledoc """
# Functions related to the column headings of a table.
# """
@moduledoc false
alias IO.ANSI.Table.{Column, Spec}
@type t :: String.t
@spec headings(Spec.t) :: Spec.t
def headings(spec) do
headings = Enum.map(spec.headers, &to_heading(&1, spec))
%{spec | headings: headings}
end
## Private functions
# @doc """
# Converts a `header` to a "heading".
# """
@spec to_heading(any, Spec.t) :: t
defp to_heading(header, spec) do
sort_symbol(header, spec, :leading) <>
titlecase(header, spec) <>
sort_symbol(header, spec, :trailing)
end
@spec sort_symbol(any, Spec.t, atom) :: String.t
defp sort_symbol(header, spec, loc) do
pos_specs = [spec.sort_symbols[:pos]] |> List.flatten()
dir = Column.find_attr(header, spec.sort_specs, :asc)
loc in pos_specs && spec.sort_symbols[dir] || ""
end
@spec titlecase(any, Spec.t) :: String.t
defp titlecase(header, spec) # string, atom or charlist
when is_binary(header) or is_atom(header) or is_list(header) do
title =
header
|> to_string()
|> String.split(~r/(_| )+/, trim: true)
|> Enum.map_join(" ", &title/1)
Enum.reduce(spec.header_fixes, title, &fix/2)
end
defp titlecase(header, _spec), do: inspect(header)
@spec title(String.t) :: String.t
defp title(word) do
word
|> String.first()
|> String.upcase()
|> Kernel.<>(String.slice(word, 1..-1))
end
@spec fix(tuple, String.t) :: String.t
defp fix({key, value}, title), do: String.replace(title, key, value)
end