mirror of
https://github.com/ash-project/igniter.git
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199 lines
5.6 KiB
Elixir
199 lines
5.6 KiB
Elixir
defmodule Mix.Tasks.Igniter.Gen.Task do
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use Igniter.Mix.Task
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@example "mix igniter.gen.task my_app.install"
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@shortdoc "Generates a new igniter task"
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@moduledoc """
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#{@shortdoc}
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## Example
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```bash
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#{@example}
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```
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## Options
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* `--optional` or `-o` - Whether or not to define the task to be compatible with igniter as an optional dependency.
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"""
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def info(_argv, _source) do
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%Igniter.Mix.Task.Info{
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example: @example,
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positional: [:task_name],
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schema: [optional: :boolean],
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aliases: [o: :optional]
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}
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end
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def igniter(igniter, argv) do
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{%{task_name: task_name}, argv} = positional_args!(argv)
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options = options!(argv)
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module_name = Module.concat(Mix.Tasks, Mix.Utils.command_to_module_name(to_string(task_name)))
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contents =
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if options[:optional] do
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optional_template(module_name, task_name)
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else
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template(module_name, task_name)
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end
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file = "lib/mix/tasks/#{task_name}.ex"
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if Igniter.exists?(igniter, file) do
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Igniter.add_issue(
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igniter,
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"Could not generate task #{task_name}, as `#{file}` already exists."
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)
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else
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Igniter.create_new_file(igniter, file, contents)
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end
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end
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defp template(module_name, task_name) do
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"""
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defmodule #{inspect(module_name)} do
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use Igniter.Mix.Task
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@example "mix #{task_name} --example arg"
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@shortdoc "A short description of your task"
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@moduledoc \"\"\"
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\#{@shortdoc}
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Longer explanation of your task
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## Example
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```bash
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\#{@example}
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```
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## Options
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* `--example-option` or `-e` - Docs for your option
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\"\"\"
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def info(_argv, _composing_task) do
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%Igniter.Mix.Task.Info{
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# dependencies to add
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adds_deps: [],
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# dependencies to add and call their associated installers, if they exist
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installs: [],
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# An example invocation
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example: @example,
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# Accept additional arguments that are not in your schema
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# Does not guarantee that, when composed, the only options you get are the ones you define
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extra_args?: false,
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# A list of environments that this should be installed in, only relevant if this is an installer.
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only: nil,
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# a list of positional arguments, i.e `[:file]`
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positional: [],
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# Other tasks your task composes using `Igniter.compose_task`, passing in the CLI argv
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# This ensures your option schema includes options from nested tasks
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composes: [],
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# `OptionParser` schema
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schema: [],
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# CLI aliases
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aliases: []
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}
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end
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def igniter(igniter, argv) do
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# extract positional arguments according to `positional` above
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{arguments, argv} = positional_args!(argv)
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# extract options according to `schema` and `aliases` above
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options = options!(argv)
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# Do your work here and return an updated igniter
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igniter
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|> Igniter.add_warning("mix #{task_name} is not yet implemented")
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end
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end
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"""
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end
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defp optional_template(module_name, task_name) do
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"""
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defmodule #{inspect(module_name)} do
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@example "mix #{task_name} --example arg"
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@shortdoc "A short description of your task"
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if !Code.ensure_loaded?(Igniter) do
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@shortdoc "\#{@shortdoc} | Install `igniter` to use"
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end
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@moduledoc \"\"\"
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\#{@shortdoc}
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Longer explanation of your task
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## Example
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```bash
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\#{@example}
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```
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## Options
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* `--example-option` or `-e` - Docs for your option
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\"\"\"
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if Code.ensure_loaded?(Igniter) do
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use Igniter.Mix.Task
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def info(_argv, _composing_task) do
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%Igniter.Mix.Task.Info{
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# dependencies to add
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adds_deps: [],
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# dependencies to add and call their associated installers, if they exist
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installs: [],
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# An example invocation
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example: @example,
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# Accept additional arguments that are not in your schema
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# Does not guarantee that, when composed, the only options you get are the ones you define
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extra_args?: false,
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# A list of environments that this should be installed in, only relevant if this is an installer.
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only: nil,
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# a list of positional arguments, i.e `[:file]`
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positional: [],
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# Other tasks your task composes using `Igniter.compose_task`, passing in the CLI argv
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# This ensures your option schema includes options from nested tasks
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composes: [],
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# `OptionParser` schema
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schema: [],
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# CLI aliases
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aliases: []
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}
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end
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def igniter(igniter, argv) do
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# extract positional arguments according to `positional` above
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{arguments, argv} = positional_args!(argv)
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# extract options according to `schema` and `aliases` above
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options = options!(argv)
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# Do your work here and return an updated igniter
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igniter
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|> Igniter.add_warning("mix #{task_name} is not yet implemented")
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end
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else
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use Mix.Task
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def run(_argv) do
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Mix.shell().error(\"\"\"
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The task '#{task_name}' requires igniter to be run.
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Please install igniter and try again.
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For more information, see: https://hexdocs.pm/igniter
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\"\"\")
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exit({:shutdown, 1})
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end
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end
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end
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"""
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end
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end
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