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-rw-r--r--lib/hex.go29
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/hex.go b/lib/hex.go
index bf539bc..6fe7e6a 100644
--- a/lib/hex.go
+++ b/lib/hex.go
@@ -24,3 +24,32 @@ func DecToHexChar(i uint16) byte {
}
return 0
}
+
+// 'h' must be hex encoded string.
+func HexStrToAsciiStr(h string) string {
+ a := ""
+ lh := len(h)
+
+ if lh < 1 {
+ return a
+ }
+ if lh == 1 {
+ return string(HexCharToDec(h[0]))
+ }
+
+ for i := 0; i < lh; i += 2 {
+ b := HexCharToDec(h[i])<<4 | HexCharToDec(h[i+1])
+ a += string(b)
+ }
+ return a
+}
+
+func ByteToHexStr(b byte) string {
+ p := DecToHexChar(uint16(b >> 4))
+ q := DecToHexChar(uint16(b & 0xf))
+
+ s := string(p)
+ s += string(q)
+
+ return s
+}