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qrcode.go
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qrcode.go
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package main
import (
"strings"
"github.com/skip2/go-qrcode"
)
func getQRString(toEncode string) string {
qrc, err := qrcode.New(toEncode, qrcode.Low)
if err != nil {
logError(err.Error())
return ""
}
var buf strings.Builder
bm := qrc.Bitmap()
for x := 4; x < len(bm)-4; x += 2 {
for y := 4; y < len(bm[x])-4; y += 2 {
buf.WriteString(getQRSquare(bm, x, y))
}
buf.WriteString("\n")
}
return buf.String()
}
func getQRSquare(s [][]bool, x int, y int) string {
a11 := s[y][x]
a21 := s[y][x+1]
a12 := s[y+1][x]
a22 := s[y+1][x+1]
if a11 {
if a12 {
if a21 {
if a22 {
return "██"
}
return "█▀"
}
if a22 {
return "▀█"
}
return "▀▀"
}
if a21 {
if a22 {
return "█▄"
}
return "█ "
}
if a22 {
return "▀▄"
}
return "▀ "
}
if a12 {
if a21 {
if a22 {
return "▄█"
}
return "▄▀"
}
if a22 {
return " █"
}
return " ▀"
}
if a21 {
if a22 {
return "▄▄"
}
return "▄ "
}
if a22 {
return " ▄"
}
return " "
}