Source Code Merger

Source Code Merger is a command line tool that merges multiple source files from a project directory into a single file. Useful for coding competitions like codingame or any situation where you must submit a single source file.

Per-language adapters control how files are bundled. The Go adapter:

• picks up every *.go file in the source directory (*_test.go ignored),
• promotes main.go to the top of the output,
• emits a single package clause and a single deduped import (...) block,
• strips all comments (line, inline, block, doc).

Usage

cgmerge [-s <source_dir>] [-o <output_file>] [-l <lang>]

If --lang is omitted, the language is auto-detected from a marker file in the source directory (e.g. main.go for Go).

If --output ends with the placeholder .ext, it is replaced by the adapter's real extension (so the default bundle.ext becomes bundle.go).

Options

  -s, --source string   Source directory to parse (default ".")
  -o, --output string   Output file name (default "bundle.ext")
  -l, --lang string     Source language (auto-detect if empty)
  -h, --help            Show usage summary
  -v, --version         Show version

Examples

Auto-detect language, write ./bundle.go next to the sources:

cgmerge -s ./example/golang

Force the Go adapter, write to a custom path:

cgmerge -s ./cmd/bit -l go -o ./tmp/bit-bundle.go
# merged ./cmd/bit -> ./tmp/bit-bundle.go (10234 bytes)

Use the .ext placeholder so the adapter picks the extension:

cgmerge -s ./example/golang -o ./tmp/bundle.ext
# merged ./example/golang -> ./tmp/bundle.go (1421 bytes)

License

MIT © 2023 Dmitrii Barsukov