go-yaml-node

Load a YAML file and print the nodes

Description

This program is extremely useful for understanding / debugging how go-yaml loads YAML documents.

The Unmarshal function loads YAML documents into a Node data type.

This program will read YAML from stdin and print the nodes in an indented tree format, showing all the (non-empty) field values.

Usage

Example:

$ go-yaml-node <<< 'scalar forms: [null, true, yes, 0xcafe, 0o123, 12:34:56]'
kind: Document
content:
    - kind: Mapping
      content:
        - kind: Scalar
          text: scalar forms
        - kind: Sequence
          style: Flow
          content:
            - kind: Scalar
              tag: '!!null'
              text: "null"
            - kind: Scalar
              tag: '!!bool'
              text: "true"
            - kind: Scalar
              text: "yes"
            - kind: Scalar
              tag: '!!int'
              text: "0xcafe"
            - kind: Scalar
              tag: '!!int'
              text: "0o123"
            - kind: Scalar
              text: "12:34:56"

Installation

make install PREFIX=<prefix-dir-path>

Testing

make test
make test file=test/file-002.yaml

No deps required. On first run this will install Go locally.

This should install all deps including a local installation of Go.

Installation

go install github.com/ingydotnet/go-yaml-node@latest

License

Copyright 2025 - Ingy döt Net

This project is licensed under the Apache License, Version 2.0.

See the LICENSE file for details.