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39 lines
738 B
Go
39 lines
738 B
Go
package gtp
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import (
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"fmt"
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"git.noahlan.cn/noahlan/ntool/nmath"
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"strings"
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)
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const alpha = "abcdefghjklmnopqrstuvwxyz" // 无 'I' 的alpha
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const alphaUpper = "ABCDEFGHJKLMNOPQRSTUVWXYZ"
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func Point(x, y int) string {
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if x < 0 || x >= 25 || y < 0 || y >= 25 {
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return "PASS"
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}
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return fmt.Sprintf("%s%d", byteToString(alphaUpper[x]), y+1)
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}
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func byteToString(b byte) string {
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return string([]byte{b})
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}
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func ParsePoint(pos string) (x, y int) {
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if strings.ToUpper(pos) == "PASS" {
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return 255, 255
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}
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x = byteToIndex(alpha, pos[0])
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if x == -1 {
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x = byteToIndex(alphaUpper, pos[0])
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}
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y, _ = nmath.Int(pos[1:])
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y = y - 1
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return
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}
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func byteToIndex(str string, b byte) int {
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return strings.Index(str, string([]byte{b}))
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}
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