| # Copyright 2022 The Pigweed Authors |
| # |
| # Licensed 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 |
| # |
| # https://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. |
| |
| # Inspired by |
| # https://fuchsia.googlesource.com/infra/recipes/+/336933647862a1a9718b4ca18f0a67e89c2419f8/recipe_modules/ninja/resources/ninja_wrapper.py |
| """Extracts a concise error from a ninja log.""" |
| |
| from pathlib import Path |
| import re |
| |
| _RULE_RE = re.compile(r'^\s*\[\d+/\d+\] (\S+)') |
| _FAILED_RE = re.compile(r'^\s*FAILED: (.*)$') |
| _FAILED_END_RE = re.compile(r'^\s*ninja: build stopped:.*') |
| |
| |
| def parse_ninja_stdout(ninja_stdout: Path) -> str: |
| failure_begins = False |
| failure_lines = [] |
| last_line = '' |
| |
| with ninja_stdout.open() as ins: |
| for line in ins: |
| # Trailing whitespace isn't significant, as it doesn't affect the |
| # way the line shows up in the logs. However, leading whitespace may |
| # be significant, especially for compiler error messages. |
| line = line.rstrip() |
| if failure_begins: |
| if not _RULE_RE.match(line) and not _FAILED_END_RE.match(line): |
| failure_lines.append(line) |
| else: |
| # Output of failed step ends, save its info. |
| failure_begins = False |
| else: |
| failed_nodes_match = _FAILED_RE.match(line) |
| failure_begins = False |
| if failed_nodes_match: |
| failure_begins = True |
| failure_lines.extend([last_line, line]) |
| last_line = line |
| |
| return '\n'.join(failure_lines) |