airflow code_utils 源码
airflow code_utils 代码
文件路径：/docs/exts/docs_build/code_utils.py
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations
import os
from contextlib import suppress
from docs.exts.provider_yaml_utils import load_package_data
ROOT_PROJECT_DIR = os.path.abspath(
os.path.join(os.path.dirname(os.path.realpath(__file__)), os.pardir, os.pardir, os.pardir)
)
PROVIDER_INIT_FILE = os.path.join(ROOT_PROJECT_DIR, "airflow", "providers", "__init__.py")
DOCS_DIR = os.path.join(ROOT_PROJECT_DIR, "docs")
AIRFLOW_DIR = os.path.join(ROOT_PROJECT_DIR, "airflow")
ALL_PROVIDER_YAMLS = load_package_data()
AIRFLOW_SITE_DIR: str = os.environ.get('AIRFLOW_SITE_DIRECTORY') or ''
PROCESS_TIMEOUT = 8 * 60 # 400 seconds
CONSOLE_WIDTH = 180
def prepare_code_snippet(file_path: str, line_no: int, context_lines_count: int = 5) -> str:
"""
Prepares code snippet.
:param file_path: file path
:param line_no: line number
:param context_lines_count: number of lines of context.
:return:
"""
def guess_lexer_for_filename(filename):
from pygments.lexers import get_lexer_for_filename
from pygments.util import ClassNotFound
try:
lexer = get_lexer_for_filename(filename)
except ClassNotFound:
from pygments.lexers.special import TextLexer
lexer = TextLexer()
return lexer
with open(file_path) as text_file:
# Highlight code
code = text_file.read()
with suppress(ImportError):
import pygments
from pygments.formatters.terminal import TerminalFormatter
code = pygments.highlight(
code=code, formatter=TerminalFormatter(), lexer=guess_lexer_for_filename(file_path)
)
code_lines = code.split("\n")
# Prepend line number
code_lines = [f"{line_no:4} | {line}" for line_no, line in enumerate(code_lines, 1)]
# # Cut out the snippet
start_line_no = max(0, line_no - context_lines_count)
end_line_no = line_no + context_lines_count
code_lines = code_lines[start_line_no:end_line_no]
# Join lines
code = "\n".join(code_lines)
return code
def pretty_format_path(path: str, start: str) -> str:
"""Formats path nicely."""
relpath = os.path.relpath(path, start)
if relpath == path:
return path
return f"{start}/{relpath}"
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