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function load_remarkable_config

Maturity: 46

Loads reMarkable tablet configuration from a JSON file, returning an empty dictionary if the file doesn't exist or cannot be loaded.

File:
/tf/active/vicechatdev/e-ink-llm/main.py
Lines:
126 - 134
Complexity:
simple

Purpose

This function provides a safe way to load reMarkable tablet configuration settings from a JSON file. It handles file existence checks, JSON parsing, and gracefully degrades to an empty dictionary if any errors occur. The function is designed to be fault-tolerant, printing warnings rather than raising exceptions when configuration loading fails, making it suitable for optional configuration scenarios.

Source Code

def load_remarkable_config(config_file: str = None) -> dict:
    """Load reMarkable configuration from file"""
    if config_file and Path(config_file).exists():
        try:
            with open(config_file, 'r') as f:
                return json.load(f)
        except Exception as e:
            print(f"⚠️  Warning: Could not load reMarkable config from {config_file}: {e}")
    return {}

Parameters

Name Type Default Kind
config_file str None positional_or_keyword

Parameter Details

config_file: Optional path to the JSON configuration file as a string. If None or if the file doesn't exist, the function returns an empty dictionary. Should point to a valid JSON file containing reMarkable tablet configuration settings.

Return Value

Type: dict

Returns a dictionary containing the parsed JSON configuration data from the file. If the file doesn't exist, is None, or cannot be parsed, returns an empty dictionary ({}). The structure of the returned dictionary depends on the JSON content in the configuration file.

Dependencies

  • json
  • pathlib

Required Imports

import json
from pathlib import Path

Usage Example

import json
from pathlib import Path

def load_remarkable_config(config_file: str = None) -> dict:
    """Load reMarkable configuration from file"""
    if config_file and Path(config_file).exists():
        try:
            with open(config_file, 'r') as f:
                return json.load(f)
        except Exception as e:
            print(f"⚠️  Warning: Could not load reMarkable config from {config_file}: {e}")
    return {}

# Example 1: Load existing config file
config = load_remarkable_config('remarkable_config.json')
print(f"Loaded config: {config}")

# Example 2: Handle missing file gracefully
config = load_remarkable_config('nonexistent.json')
print(f"Config (missing file): {config}")  # Returns {}

# Example 3: No config file specified
config = load_remarkable_config()
print(f"Config (no file): {config}")  # Returns {}

# Example 4: Use config values with defaults
config = load_remarkable_config('remarkable_config.json')
device_token = config.get('device_token', 'default_token')
api_url = config.get('api_url', 'https://default.api.url')

Best Practices

  • Always handle the case where an empty dictionary is returned, as the function never raises exceptions
  • Use .get() method with default values when accessing keys from the returned dictionary to handle missing configuration keys
  • Ensure the JSON file has proper read permissions before calling this function
  • The function prints warnings to stdout - consider redirecting or capturing these in production environments
  • This function is designed for optional configuration - critical configuration should use a different approach that raises exceptions on failure
  • The config_file parameter accepts string paths - convert Path objects to strings if needed
  • Consider validating the structure of the returned dictionary after loading to ensure required keys are present

Tags

configuration file-loading json remarkable error-handling fault-tolerant config-management file-io

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