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"""完整合并两份结构兼容的普通 HDF5 数据集。
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本脚本只是面向普通数据集的命令行入口。schema 校验、分批复制、随机混排和来源
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记录仍复用 merge_datasets.py 的实现；与 normal/hard 混合模式不同，这里会保留
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两个输入文件中的全部样本，不按比例抽样，也不执行标准化。
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"""
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from __future__ import annotations
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import argparse
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import sys
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from pathlib import Path
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import h5py
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ROOT = Path(__file__).resolve().parents[1]
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sys.path.append(str(ROOT))
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from scripts.merge_datasets import merge_datasets
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def parse_args() -> argparse.Namespace:
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"""Parse two ordinary HDF5 inputs and the merged output path."""
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parser = argparse.ArgumentParser(
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description="Merge all rows from two compatible generated HDF5 datasets"
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)
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parser.add_argument("--input-a", required=True, type=str)
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parser.add_argument("--input-b", required=True, type=str)
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parser.add_argument("--output", required=True, type=str)
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parser.add_argument("--label-a", default=None, type=str)
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parser.add_argument("--label-b", default=None, type=str)
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parser.add_argument("--seed", default=42, type=int)
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parser.add_argument("--batch-size", default=4096, type=int)
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return parser.parse_args()
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def row_count(path: Path) -> int:
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"""读取 params 的行数；params 是各字段共同使用的样本数基准。"""
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if not path.exists():
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raise FileNotFoundError(f"Input file not found: {path}")
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with h5py.File(path, "r") as source:
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if "params" not in source:
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raise KeyError(f"HDF5 dataset is missing required key 'params': {path}")
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return int(source["params"].shape[0])
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def main() -> None:
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"""校验两个输入，保留所有样本，并写出一份合并后的 HDF5。"""
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args = parse_args()
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input_a = Path(args.input_a).resolve()
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input_b = Path(args.input_b).resolve()
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output = Path(args.output).resolve()
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if output in {input_a, input_b}:
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raise ValueError("--output must differ from both input files")
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count_a = row_count(input_a)
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count_b = row_count(input_b)
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if count_a <= 0 or count_b <= 0:
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raise ValueError(f"Both inputs must contain samples: input_a={count_a}, input_b={count_b}")
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# merge_datasets 的 normal/hard 是历史参数名，在这里仅代表输入 A/B。
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# 显式传入两个文件的完整行数，可确保双方全部保留而不是按比例抽样。
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result = merge_datasets(
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normal_input=input_a,
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hard_input=input_b,
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output=output,
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tag=output.stem,
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normal_count=count_a,
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hard_count=count_b,
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seed=args.seed,
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normal_label=args.label_a or input_a.stem,
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hard_label=args.label_b or input_b.stem,
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batch_size=args.batch_size,
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)
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print(f"Merged dataset written to: {result['output_path']}")
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print(f"input_a={count_a}, input_b={count_b}, total={result['total_samples']}")
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print(f"Merge summary written to: {result['summary_path']}")
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if __name__ == "__main__":
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main()
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