IDArc Go Port

Go port of the IDArc utility for identifying 189+ different types of compressed and archived files.

Overview

This is a modern Go implementation of the classic IDArc archive identification tool. The original Turbo Pascal version identified archive formats by their magic bytes and file signatures.

Building

go build .

Usage

./idarc <archive_file>

Examples

./idarc archive.zip
./idarc backup.rar
./idarc data.tar.gz

Output

The tool returns:

• Archive type name (e.g., "ZIP", "RAR", "7z")
• Status flags for multiple volume archives and AV-protected files
• Exit code matching the archive type number

Archive type = ZIP (2)
Archive type = RAR  (multiple volume archive) (15)
Archive type = 7z (180)

Supported Archive Types

Identifies 189+ formats including:

• Common: ZIP, RAR, 7z, TAR, GZIP, BZIP2
• Legacy: ARC, ARJ, LZH, ZOO, HAP
• Specialty: CAB, RPM, DMS, ACE
• Executables: PKLite, Diet, UPX, etc.
• Images: GIF, JPEG, WinImage

Exit Codes

Exit codes correspond to archive type:

• 0 - Unknown/invalid archive
• 1-189 - Specific archive type (see help output)
• 251 - Unknown archive type
• 255 - File not found

Run idarc --help or idarc with no arguments to see the complete list.

Original Source

Based on IDArc v2.15.01 by Jürgen Peters. Original source files are in the original-pascal-version branch.

Notes

This Go port maintains compatibility with the original's behavior:

• Same archive type numbering system
• Same exit codes for scripting
• Detects multiple volume archives
• Detects AV-protected/locked archives
• Same help output and format

The implementation prioritizes clean, idiomatic Go code while preserving the original's functionality.