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gettext.extract.ex
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gettext.extract.ex
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defmodule Mix.Tasks.Gettext.Extract do
use Mix.Task
@recursive true
@shortdoc "Extracts translations from source code"
@moduledoc """
Extracts translations by recompiling the Elixir source code.
mix gettext.extract [OPTIONS]
Translations are extracted into POT (Portable Object Template) files (with a
`.pot` extension). The location of these files is determined by the `:otp_app`
and `:priv` options given by gettext modules when they call `use Gettext`. One
POT file is generated for each translation domain.
It is possible to give the `--merge` option to perform merging
for every Gettext backend updated during merge:
mix gettext.extract --merge
All other options passed to `gettext.extract` are forwarded to the
`gettext.merge` task (`Mix.Tasks.Gettext.Merge`), which is called internally
by this task. For example:
mix gettext.extract --merge --no-fuzzy
"""
@switches [merge: :boolean]
def run(args) do
Application.ensure_all_started(:gettext)
_ = Mix.Project.get!()
mix_config = Mix.Project.config()
{opts, _} = OptionParser.parse!(args, switches: @switches)
pot_files = extract(mix_config[:app], mix_config[:gettext] || [])
for {path, contents} <- pot_files do
File.mkdir_p!(Path.dirname(path))
File.write!(path, contents)
Mix.shell().info("Extracted #{Path.relative_to_cwd(path)}")
end
if opts[:merge] do
run_merge(pot_files, args)
end
:ok
end
defp extract(app, gettext_config) do
Gettext.Extractor.enable()
force_compile()
Gettext.Extractor.pot_files(app, gettext_config)
after
Gettext.Extractor.disable()
end
defp force_compile do
Enum.map(Mix.Tasks.Compile.Elixir.manifests(), &make_old_if_exists/1)
# If "compile" was never called, the reenabling is a no-op and
# "compile.elixir" is a no-op as well (because it wasn't reenabled after
# running "compile"). If "compile" was already called, then running
# "compile" is a no-op and running "compile.elixir" will work because we
# manually reenabled it.
Mix.Task.reenable("compile.elixir")
Mix.Task.run("compile")
Mix.Task.run("compile.elixir")
end
defp make_old_if_exists(path) do
:file.change_time(path, {{2000, 1, 1}, {0, 0, 0}})
end
defp run_merge(pot_files, argv) do
pot_files
|> Enum.map(fn {path, _} -> Path.dirname(path) end)
|> Enum.uniq()
|> Task.async_stream(&Mix.Tasks.Gettext.Merge.run([&1 | argv]), ordered: false)
|> Stream.run()
end
end