package com.afunx.ble.blelitelib.utils;

/* loaded from: classes.dex */
public class HexUtils {
    private static final char[] hexDigits = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};

    public static String bytes2HexString(byte[] bArr) {
        if (bArr == null) {
            return null;
        }
        return bArr.length == 0 ? "" : bytes2HexString(bArr, 0, bArr.length);
    }

    public static String bytes2HexStringWithSpace(byte[] bArr) {
        if (bArr == null) {
            return null;
        }
        return bArr.length == 0 ? "" : bytes2HexStringWithSpace(bArr, 0, bArr.length);
    }

    public static String bytes2HexString(byte[] bArr, int i, int i2) {
        if (bArr == null || i < 0 || i2 <= 0 || i2 - i > bArr.length) {
            return null;
        }
        StringBuilder sb = new StringBuilder();
        for (int i3 = 0; i3 < i2; i3++) {
            int i4 = i3 + i;
            sb.append(hexDigits[(bArr[i4] >>> 4) & 15]);
            sb.append(hexDigits[bArr[i4] & 15]);
        }
        return sb.toString();
    }

    public static String bytes2HexStringWithSpace(byte[] bArr, int i, int i2) {
        if (bArr == null || i < 0 || i2 <= 0 || i2 - i > bArr.length) {
            return null;
        }
        StringBuilder sb = new StringBuilder();
        for (int i3 = 0; i3 < i2; i3++) {
            int i4 = i3 + i;
            sb.append(hexDigits[(bArr[i4] >>> 4) & 15]);
            sb.append(hexDigits[bArr[i4] & 15]);
            if (i3 != i2 - 1) {
                sb.append(" ");
            }
        }
        return sb.toString();
    }
}