FileOps API

Purpose

This module provides a unified interface for file operations in RDEToolKit. It enables reading and writing of various file formats such as JSON, YAML, TOML, and CSV through a concise and consistent API.

Key Features

File Reading

Reading JSON, YAML, TOML, and CSV files
Automatic encoding detection and processing
Error handling and exception processing

File Writing

File output in various formats
Saving in appropriate formats
Character encoding management

`src.rdetoolkit.fileops.readf_json(path)`

A function that reads a JSON file and returns the JSON object.

引数：

名前	タイプ	デスクリプション	デフォルト
`path`	`str \| Path`	The path to the JSON file.	必須

戻り値：

タイプ	デスクリプション
`dict[str, Any]`	dict[str, Any]: The parsed json object.

発生：

タイプ	デスクリプション
`StructuredError`	If an error occurs while processing the file.

`src.rdetoolkit.fileops.writef_json(path, obj, *, enc='utf_8')`

Writes an content to a JSON file.

引数：

名前	タイプ	デスクリプション	デフォルト
`path`	`str \| Path`	Path to the destination JSON file.	必須
`obj`	`dict[str, Any]`	Invoice object to be serialized and written.	必須
`enc`	`str`	Encoding to use when writing the file. Defaults to "utf_8".	`'utf_8'`

戻り値：

タイプ	デスクリプション
`dict[str, Any]`	dict[str, Any]: The parsed json object.

Practical Usage

JSON File Operations

json_operations.py
from rdetoolkit.fileops import readf_json, writef_json
from pathlib import Path

# Read JSON file
config_path = Path("config/settings.json")
config_data = readf_json(config_path)
print(f"Configuration data: {config_data}")

# Write JSON file
output_data = {
    "experiment_id": "EXP001",
    "parameters": {
        "temperature": 25.0,
        "pressure": 1013.25,
        "humidity": 60
    },
    "results": [1.2, 3.4, 5.6, 7.8]
}

output_path = Path("results/experiment_001.json")
writef_json(output_data, output_path)
print(f"Results saved to {output_path}")

File Operations with Error Handling

safe_file_operations.py
from rdetoolkit.fileops import readf_json, writef_json
from pathlib import Path
import json

def safe_read_json(file_path: Path):
    """Safe JSON reading"""
    try:
        data = readf_json(file_path)
        print(f"✓ JSON read successful: {file_path}")
        return data
    except FileNotFoundError:
        print(f"✗ File not found: {file_path}")
        return None
    except json.JSONDecodeError as e:
        print(f"✗ JSON format error: {e}")
        return None

def safe_write_json(data, file_path: Path):
    """Safe JSON writing"""
    try:
        # Create directory
        file_path.parent.mkdir(parents=True, exist_ok=True)

        writef_json(data, file_path)
        print(f"✓ JSON write successful: {file_path}")
        return True
    except Exception as e:
        print(f"✗ JSON write error: {e}")
        return False

# Usage example
config_data = safe_read_json(Path("config/experiment.json"))
if config_data:
    # Update data
    config_data["last_updated"] = "2024-01-01T10:00:00Z"
    safe_write_json(config_data, Path("config/experiment_updated.json"))