/
acs.go
62 lines (56 loc) · 898 Bytes
/
acs.go
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package goban
type acs int
const (
_ acs = 1 << iota
acsL
acsT
acsR
acsB
)
const (
acsH = '─'
acsV = '│'
acsLT = '┘'
acsLB = '┐'
acsTR = '└'
acsRB = '┌'
acsLTB = '┤'
acsTLR = '┴'
acsRTB = '├'
acsBLR = '┬'
acsAll = '┼'
)
var (
acsList = []struct {
flag acs
r rune
}{
{acsL | acsR, acsH},
{acsT | acsB, acsV},
{acsL | acsT, acsLT},
{acsL | acsB, acsLB},
{acsT | acsR, acsTR},
{acsR | acsB, acsRB},
{acsL | acsT | acsB, acsLTB},
{acsL | acsT | acsR, acsTLR},
{acsR | acsT | acsB, acsRTB},
{acsB | acsL | acsR, acsBLR},
{acsL | acsT | acsR | acsB, acsAll},
}
)
func (a acs) Rune() rune {
for _, pair := range acsList {
if a&(acsL|acsT|acsR|acsB) == pair.flag {
return pair.r
}
}
return 0
}
func rune2acs(r rune) acs {
for _, pair := range acsList {
if pair.r == r {
return pair.flag
}
}
return 0
}