Render syntax errors like the JavaScript Eyeling CLI.
Source code in pyling/cli.py
| def format_n3_syntax_error(error: N3SyntaxError, text: str, label: str = "<input>") -> str:
"""Render syntax errors like the JavaScript Eyeling CLI."""
offset = getattr(error, "offset", None)
if not isinstance(offset, int):
return f"Syntax error in {label}: {error}"
offset = max(0, min(offset, len(text)))
before = text[:offset]
line = before.count("\n") + before.count("\r") - before.count("\r\n") + 1
line_start = max(text.rfind("\n", 0, offset), text.rfind("\r", 0, offset)) + 1
line_end_candidates = [pos for pos in (text.find("\n", offset), text.find("\r", offset)) if pos >= 0]
line_end = min(line_end_candidates) if line_end_candidates else len(text)
column = offset - line_start + 1
line_text = text[line_start:line_end]
return f"Syntax error in {label}:{line}:{column}: {error}\n{line_text}\n{' ' * (column - 1)}^"
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