62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
import subprocess
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CLANG_FORMAT_STYLE = "{BasedOnStyle: LLVM, IndentWidth: 4, BreakBeforeBraces: Attach}"
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class FormatSyntaxError(Exception):
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"""格式化工具因代码本身存在语法错误而失败（目前只有 ruff format 会触发）"""
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class FormatToolError(Exception):
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"""格式化工具执行本身失败：超时、二进制缺失、非预期的非零退出码"""
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def format_code(code, language):
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"""
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:param code: 用户代码
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:param language: "python" | "c" | "cpp"
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:return: 格式化后的代码字符串
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:raises FormatSyntaxError: 代码语法错误导致格式化失败（仅 python）
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:raises FormatToolError: 格式化工具本身执行失败
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"""
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if language == "python":
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return _format_with_ruff(code)
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return _format_with_clang(code, language)
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def _format_with_ruff(code):
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try:
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result = subprocess.run(
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["ruff", "format", "--stdin-filename", "code.py", "-"],
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input=code,
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capture_output=True,
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text=True,
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timeout=5,
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)
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except (subprocess.TimeoutExpired, OSError) as e:
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raise FormatToolError(str(e))
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if result.returncode != 0:
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raise FormatSyntaxError(result.stderr)
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return result.stdout
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def _format_with_clang(code, language):
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filename = "code.c" if language == "c" else "code.cpp"
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try:
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result = subprocess.run(
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[
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"clang-format",
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f"-assume-filename={filename}",
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f"-style={CLANG_FORMAT_STYLE}",
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],
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input=code,
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capture_output=True,
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text=True,
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timeout=5,
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)
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except (subprocess.TimeoutExpired, OSError) as e:
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raise FormatToolError(str(e))
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if result.returncode != 0:
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raise FormatToolError(result.stderr)
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return result.stdout
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