Hex.smali

.class public final Lcom/qiniu/android/dns/util/Hex;
.super Ljava/lang/Object;
.source "Hex.java"


# annotations
.annotation system Ldalvik/annotation/MemberClasses;
    value = {
        Lcom/qiniu/android/dns/util/Hex$HexDecodeException;
    }
.end annotation


# static fields
.field private static final DIGITS_LOWER:[C

.field private static final DIGITS_UPPER:[C


# direct methods
.method static constructor <clinit>()V
    .registers 2

    .line 34
    const/16 v0, 0x10

    new-array v1, v0, [C

    fill-array-data v1, :array_12

    sput-object v1, Lcom/qiniu/android/dns/util/Hex;->DIGITS_LOWER:[C

    .line 40
    new-array v0, v0, [C

    fill-array-data v0, :array_26

    sput-object v0, Lcom/qiniu/android/dns/util/Hex;->DIGITS_UPPER:[C

    return-void

    nop

    :array_12
    .array-data 2
        0x30s
        0x31s
        0x32s
        0x33s
        0x34s
        0x35s
        0x36s
        0x37s
        0x38s
        0x39s
        0x61s
        0x62s
        0x63s
        0x64s
        0x65s
        0x66s
    .end array-data

    :array_26
    .array-data 2
        0x30s
        0x31s
        0x32s
        0x33s
        0x34s
        0x35s
        0x36s
        0x37s
        0x38s
        0x39s
        0x41s
        0x42s
        0x43s
        0x44s
        0x45s
        0x46s
    .end array-data
.end method

.method public constructor <init>()V
    .registers 1

    .line 29
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static decodeHex([C)[B
    .registers 7
    .param p0, "data"    # [C
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/qiniu/android/dns/util/Hex$HexDecodeException;
        }
    .end annotation

    .line 54
    array-length v0, p0

    .line 56
    .local v0, "len":I
    and-int/lit8 v1, v0, 0x1

    if-nez v1, :cond_29

    .line 60
    shr-int/lit8 v1, v0, 0x1

    new-array v1, v1, [B

    .line 63
    .local v1, "out":[B
    const/4 v2, 0x0

    .local v2, "i":I
    const/4 v3, 0x0

    .local v3, "j":I
    :goto_b
    if-ge v3, v0, :cond_28

    .line 64
    aget-char v4, p0, v3

    invoke-static {v4, v3}, Lcom/qiniu/android/dns/util/Hex;->toDigit(CI)I

    move-result v4

    shl-int/lit8 v4, v4, 0x4

    .line 65
    .local v4, "f":I
    add-int/lit8 v3, v3, 0x1

    .line 66
    aget-char v5, p0, v3

    invoke-static {v5, v3}, Lcom/qiniu/android/dns/util/Hex;->toDigit(CI)I

    move-result v5

    or-int/2addr v4, v5

    .line 67
    add-int/lit8 v3, v3, 0x1

    .line 68
    and-int/lit16 v5, v4, 0xff

    int-to-byte v5, v5

    aput-byte v5, v1, v2

    .line 63
    .end local v4    # "f":I
    add-int/lit8 v2, v2, 0x1

    goto :goto_b

    .line 71
    .end local v2    # "i":I
    .end local v3    # "j":I
    :cond_28
    return-object v1

    .line 57
    .end local v1    # "out":[B
    :cond_29
    new-instance v1, Lcom/qiniu/android/dns/util/Hex$HexDecodeException;

    const-string v2, "Odd number of characters."

    invoke-direct {v1, v2}, Lcom/qiniu/android/dns/util/Hex$HexDecodeException;-><init>(Ljava/lang/String;)V

    goto :goto_32

    :goto_31
    throw v1

    :goto_32
    goto :goto_31
.end method

.method public static encodeHex([B)[C
    .registers 2
    .param p0, "data"    # [B

    .line 83
    const/4 v0, 0x1

    invoke-static {p0, v0}, Lcom/qiniu/android/dns/util/Hex;->encodeHex([BZ)[C

    move-result-object v0

    return-object v0
.end method

.method public static encodeHex([BZ)[C
    .registers 3
    .param p0, "data"    # [B
    .param p1, "toLowerCase"    # Z

    .line 97
    if-eqz p1, :cond_5

    sget-object v0, Lcom/qiniu/android/dns/util/Hex;->DIGITS_LOWER:[C

    goto :goto_7

    :cond_5
    sget-object v0, Lcom/qiniu/android/dns/util/Hex;->DIGITS_UPPER:[C

    :goto_7
    invoke-static {p0, v0}, Lcom/qiniu/android/dns/util/Hex;->encodeHex([B[C)[C

    move-result-object v0

    return-object v0
.end method

.method private static encodeHex([B[C)[C
    .registers 8
    .param p0, "data"    # [B
    .param p1, "toDigits"    # [C

    .line 111
    array-length v0, p0

    .line 112
    .local v0, "l":I
    shl-int/lit8 v1, v0, 0x1

    new-array v1, v1, [C

    .line 114
    .local v1, "out":[C
    const/4 v2, 0x0

    .local v2, "i":I
    const/4 v3, 0x0

    .local v3, "j":I
    :goto_7
    if-ge v2, v0, :cond_22

    .line 115
    add-int/lit8 v4, v3, 0x1

    .end local v3    # "j":I
    .local v4, "j":I
    aget-byte v5, p0, v2

    and-int/lit16 v5, v5, 0xf0

    ushr-int/lit8 v5, v5, 0x4

    aget-char v5, p1, v5

    aput-char v5, v1, v3

    .line 116
    add-int/lit8 v3, v4, 0x1

    .end local v4    # "j":I
    .restart local v3    # "j":I
    aget-byte v5, p0, v2

    and-int/lit8 v5, v5, 0xf

    aget-char v5, p1, v5

    aput-char v5, v1, v4

    .line 114
    add-int/lit8 v2, v2, 0x1

    goto :goto_7

    .line 118
    .end local v2    # "i":I
    .end local v3    # "j":I
    :cond_22
    return-object v1
.end method

.method public static encodeHexString([B)Ljava/lang/String;
    .registers 3
    .param p0, "data"    # [B

    .line 130
    new-instance v0, Ljava/lang/String;

    invoke-static {p0}, Lcom/qiniu/android/dns/util/Hex;->encodeHex([B)[C

    move-result-object v1

    invoke-direct {v0, v1}, Ljava/lang/String;-><init>([C)V

    return-object v0
.end method

.method protected static toDigit(CI)I
    .registers 6
    .param p0, "ch"    # C
    .param p1, "index"    # I
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Lcom/qiniu/android/dns/util/Hex$HexDecodeException;
        }
    .end annotation

    .line 142
    const/16 v0, 0x10

    invoke-static {p0, v0}, Ljava/lang/Character;->digit(CI)I

    move-result v0

    .line 143
    .local v0, "digit":I
    const/4 v1, -0x1

    if-eq v0, v1, :cond_a

    .line 146
    return v0

    .line 144
    :cond_a
    new-instance v1, Lcom/qiniu/android/dns/util/Hex$HexDecodeException;

    new-instance v2, Ljava/lang/StringBuilder;

    invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

    const-string v3, "Illegal hexadecimal character "

    invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v2, p0}, Ljava/lang/StringBuilder;->append(C)Ljava/lang/StringBuilder;

    const-string v3, " at index "

    invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v2, p1}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v2

    invoke-direct {v1, v2}, Lcom/qiniu/android/dns/util/Hex$HexDecodeException;-><init>(Ljava/lang/String;)V

    throw v1
.end method