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// This file is available under the Apache 2.0 License
// This file was copied from: https://github.com/briandowns/spinner
//
// Please see the LICENSE file for the copy of the Apache 2.0 License.
//
// Modifications:
//
// - made validColors set map more idiomatic with an empty struct value
// - added a function for creating color functions from color list
package yacspin
import (
"fmt"
"github.com/fatih/color"
)
// ValidColors holds the list of the strings that are mapped to
// github.com/fatih/color color attributes. Any of these colors / attributes can
// be used with the *Spinner type, and it should be reflected in the output.
var ValidColors = map[string]struct{}{
// default colors for backwards compatibility
"black": {},
"red": {},
"green": {},
"yellow": {},
"blue": {},
"magenta": {},
"cyan": {},
"white": {},
// attributes
"reset": {},
"bold": {},
"faint": {},
"italic": {},
"underline": {},
"blinkslow": {},
"blinkrapid": {},
"reversevideo": {},
"concealed": {},
"crossedout": {},
// foreground text
"fgBlack": {},
"fgRed": {},
"fgGreen": {},
"fgYellow": {},
"fgBlue": {},
"fgMagenta": {},
"fgCyan": {},
"fgWhite": {},
// foreground Hi-Intensity text
"fgHiBlack": {},
"fgHiRed": {},
"fgHiGreen": {},
"fgHiYellow": {},
"fgHiBlue": {},
"fgHiMagenta": {},
"fgHiCyan": {},
"fgHiWhite": {},
// background text
"bgBlack": {},
"bgRed": {},
"bgGreen": {},
"bgYellow": {},
"bgBlue": {},
"bgMagenta": {},
"bgCyan": {},
"bgWhite": {},
// background Hi-Intensity text
"bgHiBlack": {},
"bgHiRed": {},
"bgHiGreen": {},
"bgHiYellow": {},
"bgHiBlue": {},
"bgHiMagenta": {},
"bgHiCyan": {},
"bgHiWhite": {},
}
// returns a valid color's foreground text color attribute
var colorAttributeMap = map[string]color.Attribute{
// default colors for backwards compatibility
"black": color.FgBlack,
"red": color.FgRed,
"green": color.FgGreen,
"yellow": color.FgYellow,
"blue": color.FgBlue,
"magenta": color.FgMagenta,
"cyan": color.FgCyan,
"white": color.FgWhite,
// attributes
"reset": color.Reset,
"bold": color.Bold,
"faint": color.Faint,
"italic": color.Italic,
"underline": color.Underline,
"blinkslow": color.BlinkSlow,
"blinkrapid": color.BlinkRapid,
"reversevideo": color.ReverseVideo,
"concealed": color.Concealed,
"crossedout": color.CrossedOut,
// foreground text colors
"fgBlack": color.FgBlack,
"fgRed": color.FgRed,
"fgGreen": color.FgGreen,
"fgYellow": color.FgYellow,
"fgBlue": color.FgBlue,
"fgMagenta": color.FgMagenta,
"fgCyan": color.FgCyan,
"fgWhite": color.FgWhite,
// foreground Hi-Intensity text colors
"fgHiBlack": color.FgHiBlack,
"fgHiRed": color.FgHiRed,
"fgHiGreen": color.FgHiGreen,
"fgHiYellow": color.FgHiYellow,
"fgHiBlue": color.FgHiBlue,
"fgHiMagenta": color.FgHiMagenta,
"fgHiCyan": color.FgHiCyan,
"fgHiWhite": color.FgHiWhite,
// background text colors
"bgBlack": color.BgBlack,
"bgRed": color.BgRed,
"bgGreen": color.BgGreen,
"bgYellow": color.BgYellow,
"bgBlue": color.BgBlue,
"bgMagenta": color.BgMagenta,
"bgCyan": color.BgCyan,
"bgWhite": color.BgWhite,
// background Hi-Intensity text colors
"bgHiBlack": color.BgHiBlack,
"bgHiRed": color.BgHiRed,
"bgHiGreen": color.BgHiGreen,
"bgHiYellow": color.BgHiYellow,
"bgHiBlue": color.BgHiBlue,
"bgHiMagenta": color.BgHiMagenta,
"bgHiCyan": color.BgHiCyan,
"bgHiWhite": color.BgHiWhite,
}
// validColor will make sure the given color is actually allowed
func validColor(c string) bool {
_, ok := ValidColors[c]
return ok
}
func colorFunc(colors ...string) (func(format string, a ...interface{}) string, error) {
if len(colors) == 0 {
return fmt.Sprintf, nil
}
attrib := make([]color.Attribute, len(colors))
for i, color := range colors {
if !validColor(color) {
return nil, fmt.Errorf("%s is not a valid color", color)
}
attrib[i] = colorAttributeMap[color]
}
return color.New(attrib...).SprintfFunc(), nil
}
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