230 lines
8.4 KiB
Python
230 lines
8.4 KiB
Python
#!/usr/bin/env python3
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from __future__ import annotations
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import re
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import subprocess
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import sys
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import tomllib
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from pathlib import Path
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ROOT_DIR = Path(__file__).resolve().parents[2]
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CATALOG_PATH = ROOT_DIR / "catalog.toml"
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REQUIRED_FIELDS = ("id", "name", "version", "author", "plugin_api", "tags")
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OPTIONAL_STRING_FIELDS = ("license", "icon", "description")
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OPTIONAL_BOOL_FIELDS = ("deprecated",)
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# Oldest plugin API any supported Noctalia accepts (kOldestSupportedPluginApiVersion in the
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# shell's src/scripting/plugin_api.h). Release rows below it can never be installed, so the
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# history walk stops there.
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OLDEST_SUPPORTED_PLUGIN_API = 3
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def git_commit_time(path: Path, *extra_args: str) -> int | None:
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"""Commit time in Unix seconds, or None when `path` has no matching commit.
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An uncommitted plugin has no history, so `git log` prints nothing.
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"""
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stdout = subprocess.run(
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["git", "log", "-1", *extra_args, "--format=%ct", "--", path],
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capture_output=True,
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text=True,
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check=True,
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).stdout.strip()
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return int(stdout) if stdout else None
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def git_output(*args: str) -> str:
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return subprocess.run(
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["git", *args], capture_output=True, text=True, check=True
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).stdout
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def release_history(subdir: str, tip_api: int) -> list[dict]:
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"""Older revisions of a plugin, one per API level below the tip's, newest first.
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A Noctalia below the tip's `plugin_api` has nothing to install unless the catalog names
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a revision it can run. Walking `<subdir>/plugin.toml` newest-first and keeping only the
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revisions that lower the API level yields a strictly decreasing sequence, so each row is
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the newest revision at or below its own level -- exactly what the host resolves against.
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"""
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releases = []
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lowest_api = tip_api
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revisions = git_output(
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"log", "--format=%H", "--", f"{subdir}/plugin.toml"
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).split()
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for revision in revisions:
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if lowest_api <= OLDEST_SUPPORTED_PLUGIN_API:
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break
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try:
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manifest = tomllib.loads(
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git_output("show", f"{revision}:{subdir}/plugin.toml")
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)
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except (subprocess.CalledProcessError, tomllib.TOMLDecodeError):
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continue # unreadable or pre-`plugin_api` history
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plugin_api = manifest.get("plugin_api")
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version = manifest.get("version")
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if not isinstance(plugin_api, int) or isinstance(plugin_api, bool):
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continue
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if not isinstance(version, str) or not version:
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continue
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if plugin_api >= lowest_api or plugin_api < OLDEST_SUPPORTED_PLUGIN_API:
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continue
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releases.append({"plugin_api": plugin_api, "version": version, "rev": revision})
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lowest_api = plugin_api
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return releases
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def load_plugin_manifest(path: Path) -> dict:
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with path.open("rb") as handle:
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manifest = tomllib.load(handle)
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missing = [field for field in REQUIRED_FIELDS if field not in manifest]
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if missing:
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missing_fields = ", ".join(missing)
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raise ValueError(f"{path.relative_to(ROOT_DIR)} is missing: {missing_fields}")
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plugin_api = manifest["plugin_api"]
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if not isinstance(plugin_api, int) or isinstance(plugin_api, bool) or plugin_api <= 0:
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raise ValueError(
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f"{path.relative_to(ROOT_DIR)} has invalid plugin_api; expected a positive integer"
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)
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if not isinstance(manifest["tags"], list) or not all(
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isinstance(tag, str) for tag in manifest["tags"]
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):
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raise ValueError(f"{path.relative_to(ROOT_DIR)} has invalid tags; expected strings")
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out = {field: manifest[field] for field in REQUIRED_FIELDS}
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for field in OPTIONAL_STRING_FIELDS:
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if field in manifest:
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if not isinstance(manifest[field], str):
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raise ValueError(f"{path.relative_to(ROOT_DIR)} has invalid {field}; expected string")
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out[field] = manifest[field]
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for field in OPTIONAL_BOOL_FIELDS:
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if field in manifest:
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if not isinstance(manifest[field], bool):
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raise ValueError(f"{path.relative_to(ROOT_DIR)} has invalid {field}; expected bool")
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out[field] = manifest[field]
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# Git dates a committed plugin, and is stable across checkouts. Anything git cannot date
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# falls back to the file's mtime: an uncommitted plugin still gets a sensible entry so the
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# catalog can be generated mid-development. (A rename also breaks the link to the commit
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# that first added the file, which is why added_at falls back too.)
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mtime = int(path.stat().st_mtime)
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out["updated_at"] = git_commit_time(path) or mtime
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out["added_at"] = git_commit_time(path, "--diff-filter=A") or out["updated_at"]
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return out
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def existing_catalog_order() -> dict[str, int]:
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if not CATALOG_PATH.exists():
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return {}
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content = CATALOG_PATH.read_text(encoding="utf-8")
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ids = re.findall(r'(?m)^id\s*=\s*"([^"]+)"', content)
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return {plugin_id: index for index, plugin_id in enumerate(ids)}
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def discover_plugins() -> list[dict]:
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order = existing_catalog_order()
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plugins = []
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for manifest_path in sorted(ROOT_DIR.glob("*/plugin.toml")):
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manifest = load_plugin_manifest(manifest_path)
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directory = manifest_path.parent.name
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manifest["_directory"] = directory
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manifest["_order"] = order.get(manifest["id"], len(order))
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manifest["releases"] = release_history(directory, manifest["plugin_api"])
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plugins.append(manifest)
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plugins.sort(key=lambda plugin: (plugin["_order"], plugin["_directory"]))
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return plugins
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def toml_string(value: str) -> str:
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return '"' + value.replace("\\", "\\\\").replace('"', '\\"') + '"'
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def toml_bool(value: bool) -> str:
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return "true" if value else "false"
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def render_catalog(plugins: list[dict]) -> str:
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lines = [
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"# This file is auto-generated. Do not edit manually.",
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"# Do not include it in your commit.",
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"# Community Noctalia plugins catalog.",
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"# Index of every plugin this source ships: the minimum needed to render, search,",
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"# and compat-check the list. The per-plugin plugin.toml stays authoritative; the",
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"# host re-reads it on enable. Keep one [[plugin]] row per plugin subdirectory.",
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"# A [[plugin.release]] row names an older revision for a Noctalia below the tip's",
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"# plugin_api, so an older release stays installable instead of the plugin vanishing.",
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"",
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]
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for index, plugin in enumerate(plugins):
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if index:
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lines.append("")
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lines.extend(
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[
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"[[plugin]]",
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f"id = {toml_string(plugin['id'])}",
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f"name = {toml_string(plugin['name'])}",
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f"version = {toml_string(plugin['version'])}",
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f"updated_at = {plugin['updated_at']}",
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f"added_at = {plugin['added_at']}",
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f"author = {toml_string(plugin['author'])}",
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]
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)
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if "license" in plugin:
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lines.append(f"license = {toml_string(plugin['license'])}")
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if "icon" in plugin:
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lines.append(f"icon = {toml_string(plugin['icon'])}")
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if "description" in plugin:
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lines.append(f"description = {toml_string(plugin['description'])}")
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if "deprecated" in plugin:
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lines.append(f"deprecated = {toml_bool(plugin['deprecated'])}")
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lines.extend(
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[
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f"plugin_api = {plugin['plugin_api']}",
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"tags = ["
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+ ", ".join(toml_string(tag) for tag in plugin["tags"])
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+ "]",
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]
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)
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for release in plugin["releases"]:
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lines.extend(
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[
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"",
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"[[plugin.release]]",
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f"plugin_api = {release['plugin_api']}",
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f"version = {toml_string(release['version'])}",
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f"rev = {toml_string(release['rev'])}",
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]
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)
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return "\n".join(lines) + "\n"
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def main() -> int:
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plugins = discover_plugins()
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CATALOG_PATH.write_text(render_catalog(plugins), encoding="utf-8")
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print(f"Updated {CATALOG_PATH.relative_to(ROOT_DIR)} with {len(plugins)} plugin(s).")
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return 0
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if __name__ == "__main__":
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try:
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raise SystemExit(main())
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except Exception as error:
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print(f"error: {error}", file=sys.stderr)
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raise SystemExit(1)
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