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lib/mix/tasks/phoenix.new.ex

defmodule Mix.Tasks.Phoenix.New do
use Mix.Task
alias Phoenix.Naming
@shortdoc "Creates Phoenix application"
@moduledoc """
Creates a new Phoenix application
mix phoenix.new app_name path
"""
def run(args) do
{opts, args, _} = OptionParser.parse(args, strict: [dev: :boolean])
run(args, opts)
end
def run([name, path], opts) do
application_name = Naming.underscore(name)
application_module = Naming.camelize(application_name)
pubsub_server = application_module
|> Module.concat(nil)
|> Naming.base_concat(PubSub)
binding = [application_name: application_name,
application_module: application_module,
pubsub_server: pubsub_server,
phoenix_dep: phoenix_dep(opts[:dev]),
secret_key_base: random_string(64),
encryption_salt: random_string(8),
signing_salt: random_string(8)]
copy_from template_dir, path, application_name, &EEx.eval_file(&1, binding)
copy_from static_dir, Path.join(path, "priv/static"), application_name, &File.read!(&1)
end
def run(_, _opts) do
Mix.raise """
phoenix.new expects application name and destination path.
mix phoenix.new my_app /home/johndoe/my_app
"""
end
def random_string(length) do
:crypto.strong_rand_bytes(length) |> Base.encode64 |> binary_part(0, length)
end
defp copy_from(source_dir, target_dir, application_name, fun) do
source_paths =
source_dir
|> Path.join("**/*")
|> Path.wildcard(match_dot: true)
for source_path <- source_paths do
target_path = make_destination_path(source_path, source_dir,
target_dir, application_name)
cond do
File.dir?(source_path) ->
File.mkdir_p!(target_path)
Path.basename(source_path) == ".keep" ->
:ok
true ->
contents = fun.(source_path)
Mix.Generator.create_file(target_path, contents)
end
end
:ok
end
defp make_destination_path(source_path, source_dir, target_dir, application_name) do
target_path =
source_path
|> String.replace("application_name", application_name)
|> Path.relative_to(source_dir)
Path.join(target_dir, target_path)
end
defp phoenix_dep(true), do: ~s[{:phoenix, path: #{inspect File.cwd!}}]
defp phoenix_dep(_), do: ~s[{:phoenix, github: "phoenixframework/phoenix"}]
defp template_dir do
Application.app_dir(:phoenix, "priv/template")
end
defp static_dir do
Application.app_dir(:phoenix, "priv/static")
end
end