jsondiff

Documentation

Index

• func SkippedArrayElement(n int) string
• func SkippedObjectProperty(n int) string
• type Difference
  • func Compare(a, b []byte, opts *Options) (Difference, string)
  • func (d Difference) String() string
• type Options
  • func DefaultConsoleOptions() Options
  • func DefaultHTMLOptions() Options
  • func DefaultJSONOptions() Options
• type Tag

Functions

func SkippedArrayElement

func SkippedArrayElement(n int) string

func SkippedObjectProperty

func SkippedObjectProperty(n int) string

Types

type Difference

type Difference int

const (
	FullMatch Difference = iota
	SupersetMatch
	NoMatch
	FirstArgIsInvalidJson
	SecondArgIsInvalidJson
	BothArgsAreInvalidJson
)

func Compare

func Compare(a, b []byte, opts *Options) (Difference, string)

Compares two JSON documents using given options. Returns difference type and a string describing differences.

FullMatch means provided arguments are deeply equal.

SupersetMatch means first argument is a superset of a second argument. In this context being a superset means that for each object or array in the hierarchy which don't match exactly, it must be a superset of another one. For example:

{"a": 123, "b": 456, "c": [7, 8, 9]}

Is a superset of:

{"a": 123, "c": [7, 8]}

NoMatch means there is no match.

The rest of the difference types mean that one of or both JSON documents are invalid JSON.

Returned string uses a format similar to pretty printed JSON to show the human-readable difference between provided JSON documents. It is important to understand that returned format is not a valid JSON and is not meant to be machine readable.

func (Difference) String

func (d Difference) String() string

type Options

type Options struct {
	Normal                Tag
	Added                 Tag
	Removed               Tag
	Changed               Tag
	Skipped               Tag
	SkippedArrayElement   func(n int) string
	SkippedObjectProperty func(n int) string
	Prefix                string
	Indent                string
	PrintTypes            bool
	ChangedSeparator      string
	// When provided, this function will be used to compare two numbers. By default numbers are compared using their
	// literal representation byte by byte.
	CompareNumbers func(a, b json.Number) bool
	// When true, only differences will be printed. By default, it will print the full json.
	SkipMatches bool
}

func DefaultConsoleOptions

func DefaultConsoleOptions() Options

Provides a set of options that are well suited for console output. Options use ANSI foreground color escape sequences to highlight changes.

func DefaultHTMLOptions

func DefaultHTMLOptions() Options

Provides a set of options that are well suited for HTML output. Works best inside <pre> tag.

func DefaultJSONOptions

func DefaultJSONOptions() Options

Provides a set of options in JSON format that are fully parseable.

type Tag

type Tag struct {
	Begin string
	End   string
}