batch-mode-json

The batch-mode-json crate provides utilities for extracting JSON content from text blocks, writing JSON data to files, and handling JSON parsing errors. This crate is useful for working with batch processing data that involves JSON-formatted content.

Key Features

• JSON Extraction: Extracts JSON content from a string, especially when it’s wrapped in specific markers such as ```json ... ```.
• Asynchronous File Writing: Provides asynchronous functionality for writing serialized JSON content to files.
• Error Handling: Includes error handling for common JSON parsing issues, such as invalid JSON format or errors during file I/O operations.

Modules and Functions

Extract JSON from a Possible Backticks Block

The crate offers a function extract_json_from_possible_backticks_block that extracts JSON content from a string, handling surrounding backtick markers (```json ... ```) and whitespace.

pub fn extract_json_from_possible_backticks_block(content: &str) -> &str;

Write JSON to File

The write_to_file function asynchronously writes a given JSON string to a file. It handles file creation and ensures all data is flushed to disk.

pub async fn write_to_file(target_path: impl AsRef<Path>, serialized_json: &str) -> Result<(), io::Error>;

Error Handling

The crate also provides an error enum JsonParseError to capture various issues during JSON parsing and file handling.

error_tree!{
    pub enum JsonParseError {
        JsonRepairError(JsonRepairError),
        InvalidJson,
        SerdeError(serde_json::Error),
        IoError(std::io::Error),
    }
}

Usage

Extract JSON Content

You can extract JSON content from a string that might be surrounded by backticks using the extract_json_from_possible_backticks_block function:

let content = "```json\n{\"key\": \"value\"}\n```";
let json_content = extract_json_from_possible_backticks_block(content);
assert_eq!(json_content, "{\"key\": \"value\"}");

Write JSON to a File

To write JSON data to a file asynchronously, use the write_to_file function:

use batch_mode_json::write_to_file;
let json_data = r#"{"key": "value"}"#;
write_to_file("output.json", json_data).await.unwrap();

License

This crate is licensed under the MIT License. See LICENSE for details.