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ergo/vendor/github.com/mgutz/ansi/print.go

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package ansi
import (
"fmt"
"sort"
colorable "github.com/mattn/go-colorable"
)
// PrintStyles prints all style combinations to the terminal.
func PrintStyles() {
// for compatibility with Windows, not needed for *nix
stdout := colorable.NewColorableStdout()
bgColors := []string{
"",
":black",
":red",
":green",
":yellow",
":blue",
":magenta",
":cyan",
":white",
}
keys := make([]string, 0, len(Colors))
for k := range Colors {
keys = append(keys, k)
}
sort.Sort(sort.StringSlice(keys))
for _, fg := range keys {
for _, bg := range bgColors {
fmt.Fprintln(stdout, padColor(fg, []string{"" + bg, "+b" + bg, "+bh" + bg, "+u" + bg}))
fmt.Fprintln(stdout, padColor(fg, []string{"+s" + bg, "+i" + bg}))
fmt.Fprintln(stdout, padColor(fg, []string{"+uh" + bg, "+B" + bg, "+Bb" + bg /* backgrounds */, "" + bg + "+h"}))
fmt.Fprintln(stdout, padColor(fg, []string{"+b" + bg + "+h", "+bh" + bg + "+h", "+u" + bg + "+h", "+uh" + bg + "+h"}))
}
}
}
func pad(s string, length int) string {
for len(s) < length {
s += " "
}
return s
}
func padColor(color string, styles []string) string {
buffer := ""
for _, style := range styles {
buffer += Color(pad(color+style, 20), color+style)
}
return buffer
}