97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
#!/usr/bin/env python3
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"""Simple JSON validator CLI - validates JSON files and reports errors."""
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import json
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import sys
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from pathlib import Path
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def validate_json_file(filepath: str) -> tuple[bool, str]:
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"""Validate a JSON file.
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Returns:
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(True, "") if valid
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(False, error_message) if invalid
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"""
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try:
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with open(filepath, 'r') as f:
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json.load(f)
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return True, ""
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except FileNotFoundError:
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return False, f"Error: File not found: {filepath}"
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except json.JSONDecodeError as e:
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return False, f"Error: Invalid JSON at line {e.lineno}, column {e.colno}: {e.msg}"
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except Exception as e:
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return False, f"Error reading file: {e}"
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def validate_json_directory(directory: str) -> dict:
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"""Validate all .json files in a directory.
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Returns:
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Dict with totals and counts
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"""
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dir_path = Path(directory)
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if not dir_path.exists():
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return {"error": f"Directory not found: {directory}", "total": 0, "valid": 0, "invalid": 0}
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if not dir_path.is_dir():
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return {"error": f"Not a directory: {directory}", "total": 0, "valid": 0, "invalid": 0}
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json_files = list(dir_path.glob("*.json"))
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valid = 0
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invalid = 0
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for jf in json_files:
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is_valid, _ = validate_json_file(str(jf))
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if is_valid:
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valid += 1
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else:
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invalid += 1
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return {"total": len(json_files), "valid": valid, "invalid": invalid}
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def main():
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if len(sys.argv) < 2:
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print("Usage: json_validator.py <file1.json> [file2.json] ...", file=sys.stderr)
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print(" json_validator.py --dir <directory>", file=sys.stderr)
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sys.exit(1)
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# Check for --dir flag
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if "--dir" in sys.argv:
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try:
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dir_idx = sys.argv.index("--dir")
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directory = sys.argv[dir_idx + 1]
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result = validate_json_directory(directory)
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if "error" in result and result.get("total") == 0:
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print(f"Error: {result['error']}", file=sys.stderr)
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sys.exit(1)
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print(f"Directory: {directory}")
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print(f"Total: {result['total']}")
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print(f"Valid: {result['valid']}")
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print(f"Invalid: {result['invalid']}")
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sys.exit(result['invalid'])
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except IndexError:
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print("Error: --dir requires a directory argument", file=sys.stderr)
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sys.exit(1)
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else:
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files = sys.argv[1:]
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all_valid = True
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results = []
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for filepath in files:
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valid, error = validate_json_file(filepath)
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if valid:
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results.append(f"VALID: {filepath}")
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else:
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results.append(f"INVALID: {filepath} - {error}")
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all_valid = False
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for r in results:
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print(r)
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sys.exit(0 if all_valid else 1)
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if __name__ == "__main__":
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main() |