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A code generation and project patching framework
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lib/igniter/util/install.ex
defmodule Igniter.Util.Install do
@moduledoc """
Tools for installing packages and running their associated
installers, if present.
[!NOTE]
The functions in this module are not composable, and are primarily meant to
be used internally and to support building custom tooling on top of Igniter,
such as [Fireside](https://github.com/ibarakaiev/fireside).
"""
@doc """
Installs the provided list of dependencies. `deps` can be either:
- a string like `"ash,ash_postgres"`
- a list of strings like `["ash", "ash_postgres", ...]`
- a list of tuples like `[{:ash, "~> 3.0"}, {:ash_postgres, "~> 2.0"}]`
"""
def install(deps, argv, igniter \\ Igniter.new(), opts \\ [])
def install(deps, argv, igniter, opts) when is_binary(deps) do
deps = String.split(deps, ",")
install(deps, argv, igniter, opts)
end
def install([head | _] = deps, argv, igniter, opts) when is_binary(head) do
deps =
Enum.map(deps, fn dep ->
case determine_dep_type_and_version(dep) do
{install, requirement} ->
{install, requirement}
:error ->
raise "Could not determine source for requested package #{dep}"
end
end)
install(deps, argv, igniter, opts)
end
def install([head | _] = deps, argv, igniter, opts) when is_tuple(head) do
if Enum.any?(deps, &(elem(&1, 0) == :igniter)) do
raise ArgumentError,
"cannot install the igniter package with `mix igniter.install`. Please use `mix igniter.setup` instead."
end
global_options =
Keyword.update!(
Igniter.Mix.Task.Info.global_options(),
:switches,
&Keyword.put(&1, :example, :boolean)
)
{igniter, desired_tasks, {options, _}} =
Igniter.Util.Info.compose_install_and_validate!(
igniter,
argv,
%Igniter.Mix.Task.Info{
schema: global_options[:switches],
aliases: [],
installs: deps
},
"igniter.install",
yes: "--yes" in argv,
append?: Keyword.get(opts, :append?, false)
)
igniter = Igniter.apply_and_fetch_dependencies(igniter, options)
{available_tasks, available_task_sources} =
Enum.zip(desired_tasks, Enum.map(desired_tasks, &Mix.Task.get/1))
|> Enum.filter(fn {_desired_task, source_task} -> source_task end)
|> Enum.unzip()
case available_tasks do
[] ->
:ok
[task] ->
run_installers(
igniter,
available_task_sources,
"The following installer was found and executed: `#{task}`",
argv,
options
)
tasks ->
run_installers(
igniter,
available_task_sources,
"The following installers were found and executed: #{Enum.map_join(tasks, ", ", &"`#{&1}`")}",
argv,
options
)
end
end
defp run_installers(igniter, igniter_task_sources, title, argv, options) do
igniter_task_sources
|> Enum.reduce(igniter, fn igniter_task_source, igniter ->
Igniter.compose_task(igniter, igniter_task_source, argv)
end)
|> Igniter.do_or_dry_run(Keyword.put(options, :title, title))
:ok
end
defp determine_dep_type_and_version(requirement) do
case String.split(requirement, "@", trim: true, parts: 2) do
[package] ->
if Regex.match?(~r/^[a-z][a-z0-9_]*$/, package) do
:inets.start()
:ssl.start()
url = ~c"https://hex.pm/api/packages/#{package}"
case :httpc.request(:get, {url, [{~c"User-Agent", ~c"igniter-installer"}]}, [], []) do
{:ok, {{_version, _, _reason_phrase}, _headers, body}} ->
case Jason.decode(body) do
{:ok,
%{
"releases" => [
%{"version" => version}
| _
]
}} ->
{String.to_atom(package),
Igniter.Util.Version.version_string_to_general_requirement!(version)}
_ ->
:error
end
_ ->
:error
end
else
:error
end
[package, version] ->
case version do
"git:" <> requirement ->
if String.contains?(requirement, "@") do
case String.split(requirement, ["@"], trim: true) do
[url, ref] ->
[git: url, ref: ref]
_ ->
:error
end
else
[git: requirement, override: true]
end
"github:" <> requirement ->
if String.contains?(requirement, "@") do
case String.split(requirement, ["/", "@"], trim: true) do
[org, project, ref] ->
[github: "#{org}/#{project}", ref: ref]
_ ->
:error
end
else
[github: requirement, override: true]
end
"path:" <> requirement ->
[path: requirement, override: true]
version ->
case Version.parse(version) do
{:ok, version} ->
"== #{version}"
_ ->
case Igniter.Util.Version.version_string_to_general_requirement(version) do
{:ok, requirement} ->
requirement
_ ->
:error
end
end
end
|> case do
:error ->
:error
requirement ->
{String.to_atom(package), requirement}
end
end
end
def get_deps! do
Mix.shell().info("running mix deps.get")
case Mix.shell().cmd("mix deps.get") do
0 ->
Mix.Project.clear_deps_cache()
Mix.Project.pop()
Mix.Dep.clear_cached()
"mix.exs"
|> File.read!()
|> Code.eval_string([], file: Path.expand("mix.exs"))
Igniter.Util.DepsCompile.run()
exit_code ->
Mix.shell().info("""
mix deps.get returned exited with code: `#{exit_code}`
""")
end
end
end