copybook-charset

Character set conversion utilities for EBCDIC/ASCII encoding.

This crate provides:

• EBCDIC to UTF-8 conversion using static lookup tables for performance
• UTF-8 to EBCDIC conversion
• Support for multiple EBCDIC code pages (CP037, CP273, CP500, CP1047, CP1140)
• Codepage and character encoding types
• Zoned decimal sign handling

Usage

use copybook_charset::{ebcdic_to_utf8, utf8_to_ebcdic, Codepage, UnmappablePolicy};

// Convert EBCDIC bytes to UTF-8 string
let ebcdic_data = [0xC1, 0xC2, 0xC3]; // "ABC" in CP037
let result = ebcdic_to_utf8(&ebcdic_data, Codepage::CP037, UnmappablePolicy::Error)?;
assert_eq!(result, "ABC");

// Convert UTF-8 string to EBCDIC bytes
let utf8_text = "Hello";
let ebcdic = utf8_to_ebcdic(utf8_text, Codepage::CP037)?;

Supported Code Pages

• ASCII: Standard ASCII encoding
• CP037: EBCDIC US/Canada
• CP273: EBCDIC Germany/Austria
• CP500: EBCDIC International
• CP1047: EBCDIC Open Systems
• CP1140: EBCDIC US/Canada with Euro

License

AGPL-3.0-or-later - see LICENSE file for details.