45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
#!/usr/bin/env python3
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"""Quick JSON schema validator: validates a JSON file against a schema file.
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Usage: python validate_json_schema.py <data.json> <schema.json>
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Exit 0 if valid, 1 if invalid, 2 on error.
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Example:
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echo '{"type":"object","properties":{"name":{"type":"string"}}}' > schema.json
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echo '{"name":"test"}' > data.json
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python validate_json_schema.py data.json schema.json # exits 0
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"""
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import json
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import sys
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from jsonschema import validate, ValidationError, SchemaError
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def main():
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if len(sys.argv) < 3:
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print("Usage: validate_json_schema.py <data.json> <schema.json>", file=sys.stderr)
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sys.exit(2)
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try:
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with open(sys.argv[1], 'r') as f:
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data = json.load(f)
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with open(sys.argv[2], 'r') as f:
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schema = json.load(f)
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except FileNotFoundError as e:
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print(f"Error: {e}", file=sys.stderr)
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sys.exit(2)
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except json.JSONDecodeError as e:
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print(f"Error: Invalid JSON - {e}", file=sys.stderr)
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sys.exit(2)
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try:
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validate(instance=data, schema=schema)
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print("Valid: JSON conforms to schema")
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sys.exit(0)
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except ValidationError as e:
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print(f"Invalid: {e.message}", file=sys.stderr)
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sys.exit(1)
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except SchemaError as e:
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print(f"Invalid schema: {e.message}", file=sys.stderr)
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sys.exit(2)
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if __name__ == "__main__":
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main() |