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github_issues
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Writes GitHub Issues to "stdio" in a table with borders and colors.
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lib/github/issues/help.ex
defmodule GitHub.Issues.Help do
use PersistConfig
alias IO.ANSI.Table.Style
@count Application.get_env(@app, :default_count)
@escript Mix.Local.name_for(:escript, Mix.Project.config())
@help_attrs Application.get_env(@app, :help_attrs)
@switches Application.get_env(@app, :default_switches)
@spec show_help() :: no_return
def show_help() do
# Examples of usage on Windows:
# escript gi --help
# escript gi elixir-lang elixir 7 --last
# escript gi myfreeweb httpotion --bell
# escript gi dynamo dynamo -lb 8 -t green-border
# escript gi dynamo dynamo -bl 9 --table-style=dark
# escript gi dynamo dynamo 11 -blt light
# Examples of usage on macOS:
# ./gi laravel elixir
{types, texts} =
case :os.type() do
{:win32, _} ->
{
[:section, :normal, :command, :normal],
["usage:", " ", "escript", " #{@escript}"]
}
{:unix, _} ->
{
[:section, :normal],
["usage:", " ./#{@escript}"]
}
end
filler = " " |> String.duplicate(texts |> Enum.join() |> String.length())
prefix = help_format(types, texts)
line_user_project =
help_format([:switch, :arg, :normal, :arg], [
"[(-h | --help)] ",
"<github-user>",
" ",
"<github-project>"
])
line_count =
help_format([:switch, :normal, :arg, :normal, :switch], [
"[(-l | --last)]",
" ",
"<count>",
" ",
"[(-b | --bell)]"
])
line_table_style =
help_format([:switch, :arg, :switch], [
"[(-t | --table-style)=",
"<table-style>",
"]"
])
line_where = help_format([:section], ["where:"])
line_default_count =
help_format([:normal, :arg, :normal, :value], [
" - default ",
"<count>",
" is ",
"#{@count}"
])
line_default_table_style =
help_format([:normal, :arg, :normal, :value], [
" - default ",
"<table-style>",
" is ",
"#{@switches[:table_style]}"
])
line_table_style_one_of =
help_format([:normal, :arg, :normal], [
" - ",
"<table-style>",
" is one of:"
])
IO.write("""
#{prefix} #{line_user_project}
#{filler} #{line_count}
#{filler} #{line_table_style}
#{line_where}
#{line_default_count}
#{line_default_table_style}
#{line_table_style_one_of}
""")
template =
help_format([:normal, :value, :normal], [
"\s\s\s\s• ",
"&arg",
"&filler - ¬e"
])
Style.texts("#{template}", &IO.puts/1)
System.halt(0)
end
@spec help_format([atom], [String.t()]) :: IO.chardata()
defp help_format(types, texts) do
types
|> Enum.map(&@help_attrs[&1])
|> Enum.zip(texts)
|> Enum.map(&Tuple.to_list/1)
|> IO.ANSI.format()
end
end