micha/triplex
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Ready for testing.

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This commit is contained in:
Micha Hoiting
2026-02-20 22:59:44 +01:00
parent 027307383e
commit 82679048e0
3 changed files with 153 additions and 126 deletions
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3
go.mod Normal file
View File

@@ -0,0 +1,3 @@
module git.hoiting.org/micha/triplex
go 1.25.0

35
serial/serial.go
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@@ -1,24 +1,37 @@
package serial
import (
"errors"
"fmt"
"log"
)
const ( const (
MaxIndex = block
letters = 26 letters = 26
numbers = 900 // 100–999 numbers = 900 // 100–999
block = letters * letters * letters * numbers // 26^3 * 900 block = letters * letters * letters * numbers // 26^3 * 900
) )
func Encode(code string) (uint32, error) { func Encode(code string) (uint32, error) {
log.Printf("code: %v", code)
// Verwacht formaat: L1L2-NNN-L3-C => lengte 10, posities: 0,1,3,4,5,7,9 // Verwacht formaat: L1L2-NNN-L3-C => lengte 10, posities: 0,1,3,4,5,7,9
if len(code) != 10 || code[2] != '-' || code[6] != '-' || code[8] != '-' { if len(code) != 10 || code[2] != '-' || code[6] != '-' || code[8] != '-' {
return 0, errors.New("invalid format, expected LL-NNN-L-C") return 0, errors.New("invalid format, expected LL-NNN-L-C")
} }
l1, l2, l3 := code[0], code[1], code[7] l1, l2, l3 := code[0], code[1], code[7]
n1, n2, n3 := code[3], code[4], code[5]
// letters checken // letters checken
// forbidden alleen op l1,l2 // forbidden alleen op l1,l2
// nummer parsen uit code[3:6] // nummer parsen uit code[3:6]
L1 := int(l1 - 'A') L1 := uint32(l1 - 'A')
L2 := int(l2 - 'A') L2 := uint32(l2 - 'A')
L3 := int(l3 - 'A') L3 := uint32(l3 - 'A')
num := uint32(n1*100 + n2*10 + n3)
N := num - 100 N := num - 100
idx := uint32((((L1*letters+L2)*letters + L3) * numbers) + N) idx := uint32((((L1*letters+L2)*letters + L3) * numbers) + N)
@@ -27,10 +40,12 @@ func Encode(code string) (uint32, error) {
return 0, errors.New("invalid checksum") return 0, errors.New("invalid checksum")
} }
log.Printf("idx: %v", idx)
return idx, nil return idx, nil
} }
func Decode(idx uint32) (string, error) { func Decode(idx uint32) (string, error) {
log.Printf("idx: %v", idx)
if idx >= block { if idx >= block {
return "", errors.New("index out of range") return "", errors.New("index out of range")
} }
@@ -50,12 +65,22 @@ func Decode(idx uint32) (string, error) {
l2 := byte('A' + L2) l2 := byte('A' + L2)
l3 := byte('A' + L3) l3 := byte('A' + L3)
if isForbiddenPair(l1, l2) { if IsForbiddenPair(l1, l2) {
return "", errors.New("forbidden letter combination") return "", errors.New("forbidden letter combination")
} }
c := checksumLetter(idx) c := checksumLetter(idx)
return fmt.Sprintf("%c%c-%03d-%c-%c", l1, l2, N+100, l3, c), nil code := fmt.Sprintf("%c%c-%03d-%c-%c", l1, l2, N+100, l3, c)
log.Printf("code: %v", code)
return code, nil
} }
func checksumLetter(idx uint32) byte {
return byte('A' + idx%26)
}
func IsForbiddenPair(l1, l2 byte) bool {
return false
}

3
serial/serial_test.go
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@@ -4,7 +4,7 @@ import (
"testing" "testing"
"testing/quick" "testing/quick"
"yourmodule/serial" "git.hoiting.org/micha/triplex/serial"
) )
// Property: Decode(Encode(code)) == code (voor geldige codes) // Property: Decode(Encode(code)) == code (voor geldige codes)
@@ -125,4 +125,3 @@ func TestDecodedFormatLooksCorrect(t *testing.T) {
t.Fatalf("Decoded format property failed: %v", err) t.Fatalf("Decoded format property failed: %v", err)
} }
} }