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A code generation and project patching framework
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lib/mix/tasks/igniter.install.ex
defmodule Mix.Tasks.Igniter.Install do
@moduledoc """
Install a package or packages, and run any associated installers.
## Args
mix igniter.install package1 package2 package3
## Package formats
* `package` - The latest version of the package will be installed, pinned at the
major version, or minor version if there is no major version yet.
* `package@version` - The package will be installed at the specified version.
If the version given is generic, like `3.0`, it will be pinned as described above.
if it is specific, like `3.0.1`, it will be pinned at that *exact* version with `==`.
* `package@git:git_url` - The package will be installed from the specified git url.
* `package@github:project/repo` - The package will be installed from the specified github repo.
* `package@path:path/to/dep` - The package will be installed from the specified path.
Additionally, a Git ref can be specified when using `git` or `github`:
* `package@git:git_url@ref`
## Switches
* `--dry-run` - Run the task without making any changes.
* `--yes` - Automatically answer yes to any prompts.
* `--yes-to-deps` - Automatically answer yes to any prompts about installing new deps.
* `--verbose` - Display additional output from various operations.
* `--example` - Request that installed packages include initial example code.
"""
use Mix.Task
@impl true
@shortdoc "Install a package or packages, and run any associated installers."
def run(argv) do
Igniter.Util.Loading.with_spinner(
"compile",
fn ->
Mix.Task.run("deps.compile")
Mix.Task.run("deps.loadpaths")
Mix.Task.run("compile", ["--no-compile"])
end,
verbose?: "--verbose" in argv
)
{argv, positional} = extract_positional_args(argv)
packages =
positional
|> Enum.join(",")
|> String.split(",", trim: true)
if Enum.empty?(packages) do
raise ArgumentError, "must provide at least one package to install"
end
Application.ensure_all_started(:rewrite)
Igniter.Util.Install.install(Enum.join(packages, ","), argv)
end
@doc false
defp extract_positional_args(argv) do
do_extract_positional_args(argv, [], [])
end
defp do_extract_positional_args([], argv, positional), do: {argv, positional}
defp do_extract_positional_args(argv, got_argv, positional) do
case OptionParser.next(argv, switches: []) do
{_, _key, true, rest} ->
do_extract_positional_args(
rest,
got_argv ++ [Enum.at(argv, 0)],
positional
)
{_, _key, _value, rest} ->
count_consumed = Enum.count(argv) - Enum.count(rest)
do_extract_positional_args(
rest,
got_argv ++ Enum.take(argv, count_consumed),
positional
)
{:error, rest} ->
[first | rest] = rest
do_extract_positional_args(rest, got_argv, positional ++ [first])
end
end
end