// Package write provides routines for writing diffs.

package write

// An Option modifies behavior when writing a diff.

type Option interface {

isOption()

}

// Names provides the before/after names for writing a diff.

// They are traditionally filenames.

func Names(a, b string) Option {

return names{a, b}

}

type names struct {

a, b string

}

func (names) isOption() {}

// TerminalColor specifies that a diff intended

// for a terminal should be written using colors.

//

// Do not use TerminalColor if TERM=dumb is set in the environment.

func TerminalColor() Option {

return colorOpt(true)

}

type colorOpt bool

func (colorOpt) isOption() {}

const (

ansiBold = "\u001b[1m"

ansiFgRed = "\u001b[31m"

ansiFgGreen = "\u001b[32m"

ansiFgBlue = "\u001b[36m"

ansiReset = "\u001b[0m"

)