]> git.madduck.net Git - etc/vim.git/blobdiff - src/black_primer/lib.py

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

black/parser: partial support for pattern matching (#2586)
[etc/vim.git] / src / black_primer / lib.py
index 913f9d5a181de38cc4a24467af9b7471833d0b63..13724f431ce81c9ad0651dc9f715e38b0c4057fe 100644 (file)
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import asyncio
 import errno
 import json
@@ -13,15 +11,27 @@ from platform import system
 from shutil import rmtree, which
 from subprocess import CalledProcessError
 from sys import version_info
-from typing import Any, Callable, Dict, NamedTuple, Optional, Sequence, Tuple
+from tempfile import TemporaryDirectory
+from typing import (
+    Any,
+    Callable,
+    Dict,
+    List,
+    NamedTuple,
+    Optional,
+    Sequence,
+    Tuple,
+    Union,
+)
 from urllib.parse import urlparse
 
 import click
 
 
+TEN_MINUTES_SECONDS = 600
 WINDOWS = system() == "Windows"
 BLACK_BINARY = "black.exe" if WINDOWS else "black"
-GIT_BIANRY = "git.exe" if WINDOWS else "git"
+GIT_BINARY = "git.exe" if WINDOWS else "git"
 LOG = logging.getLogger(__name__)
 
 
@@ -40,24 +50,31 @@ class Results(NamedTuple):
 
 async def _gen_check_output(
     cmd: Sequence[str],
-    timeout: float = 300,
+    timeout: float = TEN_MINUTES_SECONDS,
     env: Optional[Dict[str, str]] = None,
     cwd: Optional[Path] = None,
+    stdin: Optional[bytes] = None,
 ) -> Tuple[bytes, bytes]:
     process = await asyncio.create_subprocess_exec(
         *cmd,
+        stdin=asyncio.subprocess.PIPE,
         stdout=asyncio.subprocess.PIPE,
         stderr=asyncio.subprocess.STDOUT,
         env=env,
         cwd=cwd,
     )
     try:
-        (stdout, stderr) = await asyncio.wait_for(process.communicate(), timeout)
+        (stdout, stderr) = await asyncio.wait_for(process.communicate(stdin), timeout)
     except asyncio.TimeoutError:
         process.kill()
         await process.wait()
         raise
 
+    # A non-optional timeout was supplied to asyncio.wait_for, guaranteeing
+    # a timeout or completed process.  A terminated Python process will have a
+    # non-empty returncode value.
+    assert process.returncode is not None
+
     if process.returncode != 0:
         cmd_str = " ".join(cmd)
         raise CalledProcessError(
@@ -71,6 +88,18 @@ def analyze_results(project_count: int, results: Results) -> int:
     failed_pct = round(((results.stats["failed"] / project_count) * 100), 2)
     success_pct = round(((results.stats["success"] / project_count) * 100), 2)
 
+    if results.failed_projects:
+        click.secho("\nFailed projects:\n", bold=True)
+
+    for project_name, project_cpe in results.failed_projects.items():
+        print(f"## {project_name}:")
+        print(f" - Returned {project_cpe.returncode}")
+        if project_cpe.stderr:
+            print(f" - stderr:\n{project_cpe.stderr.decode('utf8')}")
+        if project_cpe.stdout:
+            print(f" - stdout:\n{project_cpe.stdout.decode('utf8')}")
+        print("")
+
     click.secho("-- primer results 📊 --\n", bold=True)
     click.secho(
         f"{results.stats['success']} / {project_count} succeeded ({success_pct}%) ✅",
@@ -93,47 +122,99 @@ def analyze_results(project_count: int, results: Results) -> int:
     )
 
     if results.failed_projects:
-        click.secho("\nFailed projects:\n", bold=True)
-
-    for project_name, project_cpe in results.failed_projects.items():
-        print(f"## {project_name}:")
-        print(f" - Returned {project_cpe.returncode}")
-        if project_cpe.stderr:
-            print(f" - stderr:\n{project_cpe.stderr.decode('utf8')}")
-        if project_cpe.stdout:
-            print(f" - stdout:\n{project_cpe.stdout.decode('utf8')}")
-        print("")
+        failed = ", ".join(results.failed_projects.keys())
+        click.secho(f"\nFailed projects: {failed}\n", bold=True)
 
     return results.stats["failed"]
 
 
+def _flatten_cli_args(cli_args: List[Union[Sequence[str], str]]) -> List[str]:
+    """Allow a user to put long arguments into a list of strs
+    to make the JSON human readable"""
+    flat_args = []
+    for arg in cli_args:
+        if isinstance(arg, str):
+            flat_args.append(arg)
+            continue
+
+        args_as_str = "".join(arg)
+        flat_args.append(args_as_str)
+
+    return flat_args
+
+
 async def black_run(
-    repo_path: Path, project_config: Dict[str, Any], results: Results
+    project_name: str,
+    repo_path: Optional[Path],
+    project_config: Dict[str, Any],
+    results: Results,
+    no_diff: bool = False,
 ) -> None:
     """Run Black and record failures"""
+    if not repo_path:
+        results.stats["failed"] += 1
+        results.failed_projects[project_name] = CalledProcessError(
+            69, [], f"{project_name} has no repo_path: {repo_path}".encode(), b""
+        )
+        return
+
+    stdin_test = project_name.upper() == "STDIN"
     cmd = [str(which(BLACK_BINARY))]
     if "cli_arguments" in project_config and project_config["cli_arguments"]:
-        cmd.extend(*project_config["cli_arguments"])
-    cmd.extend(["--check", "--diff", "."])
+        cmd.extend(_flatten_cli_args(project_config["cli_arguments"]))
+    cmd.append("--check")
+    if not no_diff:
+        cmd.append("--diff")
+
+    # Workout if we should read in a python file or search from cwd
+    stdin = None
+    if stdin_test:
+        cmd.append("-")
+        stdin = repo_path.read_bytes()
+    elif "base_path" in project_config:
+        cmd.append(project_config["base_path"])
+    else:
+        cmd.append(".")
 
-    try:
-        _stdout, _stderr = await _gen_check_output(cmd, cwd=repo_path)
-    except asyncio.TimeoutError:
-        results.stats["failed"] += 1
-        LOG.error(f"Running black for {repo_path} timed out ({cmd})")
-    except CalledProcessError as cpe:
-        # TODO: Tune for smarter for higher signal
-        # If any other return value than 1 we raise - can disable project in config
-        if cpe.returncode == 1:
-            if not project_config["expect_formatting_changes"]:
+    timeout = (
+        project_config["timeout_seconds"]
+        if "timeout_seconds" in project_config
+        else TEN_MINUTES_SECONDS
+    )
+    with TemporaryDirectory() as tmp_path:
+        # Prevent reading top-level user configs by manipulating environment variables
+        env = {
+            **os.environ,
+            "XDG_CONFIG_HOME": tmp_path,  # Unix-like
+            "USERPROFILE": tmp_path,  # Windows (changes `Path.home()` output)
+        }
+
+        cwd_path = repo_path.parent if stdin_test else repo_path
+        try:
+            LOG.debug(f"Running black for {project_name}: {' '.join(cmd)}")
+            _stdout, _stderr = await _gen_check_output(
+                cmd, cwd=cwd_path, env=env, stdin=stdin, timeout=timeout
+            )
+        except asyncio.TimeoutError:
+            results.stats["failed"] += 1
+            LOG.error(f"Running black for {repo_path} timed out ({cmd})")
+        except CalledProcessError as cpe:
+            # TODO: Tune for smarter for higher signal
+            # If any other return value than 1 we raise - can disable project in config
+            if cpe.returncode == 1:
+                if not project_config["expect_formatting_changes"]:
+                    results.stats["failed"] += 1
+                    results.failed_projects[repo_path.name] = cpe
+                else:
+                    results.stats["success"] += 1
+                return
+            elif cpe.returncode > 1:
                 results.stats["failed"] += 1
                 results.failed_projects[repo_path.name] = cpe
-            else:
-                results.stats["success"] += 1
-            return
+                return
 
-        LOG.error(f"Unknown error with {repo_path}")
-        raise
+            LOG.error(f"Unknown error with {repo_path}")
+            raise
 
     # If we get here and expect formatting changes something is up
     if project_config["expect_formatting_changes"]:
@@ -154,7 +235,7 @@ async def git_checkout_or_rebase(
     depth: int = 1,
 ) -> Optional[Path]:
     """git Clone project or rebase"""
-    git_bin = str(which(GIT_BIANRY))
+    git_bin = str(which(GIT_BINARY))
     if not git_bin:
         LOG.error("No git binary found")
         return None
@@ -181,7 +262,7 @@ async def git_checkout_or_rebase(
 
 
 def handle_PermissionError(
-    func: Callable, path: Path, exc: Tuple[Any, Any, Any]
+    func: Callable[..., None], path: Path, exc: Tuple[Any, Any, Any]
 ) -> None:
     """
     Handle PermissionError during shutil.rmtree.
@@ -206,16 +287,16 @@ def handle_PermissionError(
 
 async def load_projects_queue(
     config_path: Path,
+    projects_to_run: List[str],
 ) -> Tuple[Dict[str, Any], asyncio.Queue]:
     """Load project config and fill queue with all the project names"""
     with config_path.open("r") as cfp:
         config = json.load(cfp)
 
     # TODO: Offer more options here
-    # e.g. Run on X random packages or specific sub list etc.
-    project_names = sorted(config["projects"].keys())
-    queue: asyncio.Queue = asyncio.Queue(maxsize=len(project_names))
-    for project in project_names:
+    # e.g. Run on X random packages etc.
+    queue: asyncio.Queue = asyncio.Queue(maxsize=len(projects_to_run))
+    for project in projects_to_run:
         await queue.put(project)
 
     return config, queue
@@ -230,6 +311,7 @@ async def project_runner(
     long_checkouts: bool = False,
     rebase: bool = False,
     keep: bool = False,
+    no_diff: bool = False,
 ) -> None:
     """Check out project and run Black on it + record result"""
     loop = asyncio.get_event_loop()
@@ -265,12 +347,15 @@ async def project_runner(
             LOG.debug(f"Skipping {project_name} as it's configured as a long checkout")
             continue
 
-        repo_path = await git_checkout_or_rebase(work_path, project_config, rebase)
-        if not repo_path:
-            continue
-        await black_run(repo_path, project_config, results)
+        repo_path: Optional[Path] = Path(__file__)
+        stdin_project = project_name.upper() == "STDIN"
+        if not stdin_project:
+            repo_path = await git_checkout_or_rebase(work_path, project_config, rebase)
+            if not repo_path:
+                continue
+        await black_run(project_name, repo_path, project_config, results, no_diff)
 
-        if not keep:
+        if not keep and not stdin_project:
             LOG.debug(f"Removing {repo_path}")
             rmtree_partial = partial(
                 rmtree, path=repo_path, onerror=handle_PermissionError
@@ -284,9 +369,11 @@ async def process_queue(
     config_file: str,
     work_path: Path,
     workers: int,
+    projects_to_run: List[str],
     keep: bool = False,
     long_checkouts: bool = False,
     rebase: bool = False,
+    no_diff: bool = False,
 ) -> int:
     """
     Process the queue with X workers and evaluate results
@@ -301,7 +388,7 @@ async def process_queue(
     results.stats["success"] = 0
     results.stats["wrong_py_ver"] = 0
 
-    config, queue = await load_projects_queue(Path(config_file))
+    config, queue = await load_projects_queue(Path(config_file), projects_to_run)
     project_count = queue.qsize()
     s = "" if project_count == 1 else "s"
     LOG.info(f"{project_count} project{s} to run Black over")
@@ -314,7 +401,15 @@ async def process_queue(
     await asyncio.gather(
         *[
             project_runner(
-                i, config, queue, work_path, results, long_checkouts, rebase, keep
+                i,
+                config,
+                queue,
+                work_path,
+                results,
+                long_checkouts,
+                rebase,
+                keep,
+                no_diff,
             )
             for i in range(workers)
         ]