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+# YAML marshaling and unmarshaling support for Go
+
+[![Build Status](https://travis-ci.org/ghodss/yaml.svg)](https://travis-ci.org/ghodss/yaml)
+
+## Introduction
+
+A wrapper around [go-yaml](https://github.com/go-yaml/yaml) designed to enable a better way of handling YAML when marshaling to and from structs.
+
+In short, this library first converts YAML to JSON using go-yaml and then uses `json.Marshal` and `json.Unmarshal` to convert to or from the struct. This means that it effectively reuses the JSON struct tags as well as the custom JSON methods `MarshalJSON` and `UnmarshalJSON` unlike go-yaml. For a detailed overview of the rationale behind this method, [see this blog post](http://ghodss.com/2014/the-right-way-to-handle-yaml-in-golang/).
+
+## Compatibility
+
+This package uses [go-yaml](https://github.com/go-yaml/yaml) and therefore supports [everything go-yaml supports](https://github.com/go-yaml/yaml#compatibility).
+
+## Caveats
+
+**Caveat #1:** When using `yaml.Marshal` and `yaml.Unmarshal`, binary data should NOT be preceded with the `!!binary` YAML tag. If you do, go-yaml will convert the binary data from base64 to native binary data, which is not compatible with JSON. You can still use binary in your YAML files though - just store them without the `!!binary` tag and decode the base64 in your code (e.g. in the custom JSON methods `MarshalJSON` and `UnmarshalJSON`). This also has the benefit that your YAML and your JSON binary data will be decoded exactly the same way. As an example:
+
+```
+BAD:
+	exampleKey: !!binary gIGC
+
+GOOD:
+	exampleKey: gIGC
+... and decode the base64 data in your code.
+```
+
+**Caveat #2:** When using `YAMLToJSON` directly, maps with keys that are maps will result in an error since this is not supported by JSON. This error will occur in `Unmarshal` as well since you can't unmarshal map keys anyways since struct fields can't be keys.
+
+## Installation and usage
+
+To install, run:
+
+```
+$ go get github.com/ghodss/yaml
+```
+
+And import using:
+
+```
+import "github.com/ghodss/yaml"
+```
+
+Usage is very similar to the JSON library:
+
+```go
+package main
+
+import (
+	"fmt"
+
+	"github.com/ghodss/yaml"
+)
+
+type Person struct {
+	Name string `json:"name"`  // Affects YAML field names too.
+	Age int `json:"age"`
+}
+
+func main() {
+	// Marshal a Person struct to YAML.
+	p := Person{"John", 30}
+	y, err := yaml.Marshal(p)
+	if err != nil {
+		fmt.Printf("err: %v\n", err)
+		return
+	}
+	fmt.Println(string(y))
+	/* Output:
+	age: 30
+	name: John
+	*/
+
+	// Unmarshal the YAML back into a Person struct.
+	var p2 Person
+	err = yaml.Unmarshal(y, &p2)
+	if err != nil {
+		fmt.Printf("err: %v\n", err)
+		return
+	}
+	fmt.Println(p2)
+	/* Output:
+	{John 30}
+	*/
+}
+```
+
+`yaml.YAMLToJSON` and `yaml.JSONToYAML` methods are also available:
+
+```go
+package main
+
+import (
+	"fmt"
+
+	"github.com/ghodss/yaml"
+)
+func main() {
+	j := []byte(`{"name": "John", "age": 30}`)
+	y, err := yaml.JSONToYAML(j)
+	if err != nil {
+		fmt.Printf("err: %v\n", err)
+		return
+	}
+	fmt.Println(string(y))
+	/* Output:
+	name: John
+	age: 30
+	*/
+	j2, err := yaml.YAMLToJSON(y)
+	if err != nil {
+		fmt.Printf("err: %v\n", err)
+		return
+	}
+	fmt.Println(string(j2))
+	/* Output:
+	{"age":30,"name":"John"}
+	*/
+}
+```