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054f914741
Summary: When building a project in a runtime mode, the compilation database is a separate CMake invocation. So its `compile_commands.json` file will be placed elsewhere in the `runtimes/runtime-bins` directory. This is somewhat annoying for ongoing development when a runtimes build is necessary. This patch adds some CMake magic to merge the two files.
49 lines
1.3 KiB
Python
49 lines
1.3 KiB
Python
#!/usr/bin/env python
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"""A command line utility to merge two JSON files.
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This is a python program that merges two JSON files into a single one. The
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intended use for this is to combine generated 'compile_commands.json' files
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created by CMake when performing an LLVM runtime build.
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"""
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import argparse
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import json
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import sys
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument(
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"-o",
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type=str,
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help="The output file to write JSON data to",
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default=None,
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nargs="?",
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)
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parser.add_argument(
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"json_files", type=str, nargs="+", help="Input JSON files to merge"
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)
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args = parser.parse_args()
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merged_data = []
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for json_file in args.json_files:
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try:
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with open(json_file, "r") as f:
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data = json.load(f)
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merged_data.extend(data)
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except (IOError, json.JSONDecodeError) as e:
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print("Failed to parse {json_file}: {e}", file=sys.stderr)
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continue
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# Deduplicate by converting each entry to a tuple of sorted key-value pairs
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unique_data = list({json.dumps(entry, sort_keys=True) for entry in merged_data})
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unique_data = [json.loads(entry) for entry in unique_data]
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with open(args.o, "w") as f:
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json.dump(unique_data, f, indent=2)
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if __name__ == "__main__":
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main()
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