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llmjson 0.1.0

Initial Release

• Thin wrapper around the Rust crate llm_json for repairing malformed JSON strings, particularly those generated by Large Language Models

Core Features

JSON Repair Functions

• repair_json_str() - Repair malformed JSON strings
  • Handles missing quotes around keys and values
  • Removes trailing commas
  • Fixes unquoted keys
  • Converts single quotes to double quotes
  • Repairs incomplete arrays and objects
  • Auto-completes missing values with sensible defaults
• repair_json_file() - Read and repair JSON from files
  • Direct file reading and repair
  • Clear error messages for missing files, permission issues, etc.
• repair_json_raw() - Repair JSON from raw byte vectors
  • Useful for binary data or reading from connections
  • Validates UTF-8 encoding

New: Return R Objects Directly

• Added return_objects parameter to all repair functions
  • When TRUE, returns R objects (lists, vectors) instead of JSON strings
  • Works with all three repair functions: repair_json_str(), repair_json_file(), and repair_json_raw()

New: Schema Validation System

• Complete schema validation and type conversion system inspired by the structr package
• Schema builder functions:
  • s_map() - Define JSON objects with named fields
  • s_integer() - Integer fields with optional defaults
  • s_double() - Double/numeric fields with optional defaults
  • s_string() - String fields with optional defaults
  • s_logical() - Logical/boolean fields with optional defaults
  • s_array() - Arrays with typed elements
  • s_any() - Accept any JSON type
• Schema features:
  • Type coercion (e.g., string “30” to integer 30)
  • Optional fields with .optional = TRUE
  • Default values with .default parameter
  • Required field validation
  • Nested schemas for complex structures
  • Works with both return_objects = TRUE and return_objects = FALSE
• Schema benefits:
  • Ensures correct R types (integer vs. double vs. string)
  • Provides clear error messages for missing required fields
  • Handles missing optional fields gracefully
  • Validates JSON structure matches expectations

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.