106 lines
3.2 KiB
Python
106 lines
3.2 KiB
Python
from __future__ import annotations
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import contextlib
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import os.path
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from typing import Generator
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from typing import Sequence
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import toml
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import pre_commit.constants as C
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from pre_commit.envcontext import envcontext
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from pre_commit.envcontext import PatchesT
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from pre_commit.envcontext import Var
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from pre_commit.hook import Hook
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from pre_commit.languages import helpers
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from pre_commit.prefix import Prefix
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from pre_commit.util import clean_path_on_failure
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from pre_commit.util import cmd_output_b
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ENVIRONMENT_DIR = 'rustenv'
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get_default_version = helpers.basic_get_default_version
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healthy = helpers.basic_healthy
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def get_env_patch(target_dir: str) -> PatchesT:
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return (
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('PATH', (os.path.join(target_dir, 'bin'), os.pathsep, Var('PATH'))),
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)
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@contextlib.contextmanager
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def in_env(prefix: Prefix) -> Generator[None, None, None]:
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target_dir = prefix.path(
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helpers.environment_dir(ENVIRONMENT_DIR, C.DEFAULT),
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)
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with envcontext(get_env_patch(target_dir)):
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yield
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def _add_dependencies(
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cargo_toml_path: str,
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additional_dependencies: set[str],
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) -> None:
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with open(cargo_toml_path, 'r+') as f:
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cargo_toml = toml.load(f)
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cargo_toml.setdefault('dependencies', {})
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for dep in additional_dependencies:
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name, _, spec = dep.partition(':')
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cargo_toml['dependencies'][name] = spec or '*'
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f.seek(0)
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toml.dump(cargo_toml, f)
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f.truncate()
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def install_environment(
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prefix: Prefix,
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version: str,
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additional_dependencies: Sequence[str],
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) -> None:
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helpers.assert_version_default('rust', version)
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directory = prefix.path(
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helpers.environment_dir(ENVIRONMENT_DIR, C.DEFAULT),
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)
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# There are two cases where we might want to specify more dependencies:
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# as dependencies for the library being built, and as binary packages
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# to be `cargo install`'d.
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#
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# Unlike e.g. Python, if we just `cargo install` a library, it won't be
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# used for compilation. And if we add a crate providing a binary to the
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# `Cargo.toml`, the binary won't be built.
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#
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# Because of this, we allow specifying "cli" dependencies by prefixing
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# with 'cli:'.
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cli_deps = {
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dep for dep in additional_dependencies if dep.startswith('cli:')
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}
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lib_deps = set(additional_dependencies) - cli_deps
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if len(lib_deps) > 0:
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_add_dependencies(prefix.path('Cargo.toml'), lib_deps)
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with clean_path_on_failure(directory):
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packages_to_install: set[tuple[str, ...]] = {('--path', '.')}
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for cli_dep in cli_deps:
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cli_dep = cli_dep[len('cli:'):]
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package, _, version = cli_dep.partition(':')
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if version != '':
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packages_to_install.add((package, '--version', version))
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else:
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packages_to_install.add((package,))
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for args in packages_to_install:
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cmd_output_b(
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'cargo', 'install', '--bins', '--root', directory, *args,
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cwd=prefix.prefix_dir,
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)
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def run_hook(
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hook: Hook,
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file_args: Sequence[str],
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color: bool,
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) -> tuple[int, bytes]:
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with in_env(hook.prefix):
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return helpers.run_xargs(hook, hook.cmd, file_args, color=color)
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