Base16Codec.smali

.class Lcom/amazonaws/util/Base16Codec;
.super Ljava/lang/Object;
.source "Base16Codec.java"

# interfaces
.implements Lcom/amazonaws/util/Codec;


# annotations
.annotation system Ldalvik/annotation/MemberClasses;
    value = {
        Lcom/amazonaws/util/Base16Codec$LazyHolder;
    }
.end annotation


# static fields
.field private static final BITS_4:I = 0x4

.field private static final MASK_4BITS:I = 0xf

.field private static final OFFSET_OF_A:I = 0x37

.field private static final OFFSET_OF_a:I = 0x57

.field private static final OFFSET_VALUE:I = 0xa


# instance fields
.field private final alpahbets:[B


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

    .line 1
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    const-string v0, "0123456789ABCDEF"

    .line 2
    invoke-static {v0}, Lcom/amazonaws/util/CodecUtils;->toBytesDirect(Ljava/lang/String;)[B

    move-result-object v0

    iput-object v0, p0, Lcom/amazonaws/util/Base16Codec;->alpahbets:[B

    return-void
.end method


# virtual methods
.method public decode([BI)[B
    .registers 7

    .line 1
    rem-int/lit8 v0, p2, 0x2

    if-nez v0, :cond_28

    .line 2
    div-int/lit8 p2, p2, 0x2

    new-array p2, p2, [B

    const/4 v0, 0x0

    const/4 v1, 0x0

    .line 3
    :goto_a
    array-length v2, p2

    if-ge v0, v2, :cond_27

    add-int/lit8 v2, v1, 0x1

    .line 4
    aget-byte v1, p1, v1

    .line 5
    invoke-virtual {p0, v1}, Lcom/amazonaws/util/Base16Codec;->pos(B)I

    move-result v1

    shl-int/lit8 v1, v1, 0x4

    add-int/lit8 v3, v2, 0x1

    aget-byte v2, p1, v2

    invoke-virtual {p0, v2}, Lcom/amazonaws/util/Base16Codec;->pos(B)I

    move-result v2

    or-int/2addr v1, v2

    int-to-byte v1, v1

    aput-byte v1, p2, v0

    add-int/lit8 v0, v0, 0x1

    move v1, v3

    goto :goto_a

    :cond_27
    return-object p2

    .line 6
    :cond_28
    new-instance p1, Ljava/lang/IllegalArgumentException;

    new-instance v0, Ljava/lang/StringBuilder;

    invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V

    const-string v1, "Input is expected to be encoded in multiple of 2 bytes but found: "

    invoke-virtual {v0, v1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v0, p2}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

    invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p2

    invoke-direct {p1, p2}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    goto :goto_40

    :goto_3f
    throw p1

    :goto_40
    goto :goto_3f
.end method

.method public encode([B)[B
    .registers 9

    .line 1
    array-length v0, p1

    mul-int/lit8 v0, v0, 0x2

    new-array v0, v0, [B

    const/4 v1, 0x0

    const/4 v2, 0x0

    .line 2
    :goto_7
    array-length v3, p1

    if-ge v1, v3, :cond_23

    add-int/lit8 v3, v2, 0x1

    .line 3
    iget-object v4, p0, Lcom/amazonaws/util/Base16Codec;->alpahbets:[B

    aget-byte v5, p1, v1

    ushr-int/lit8 v6, v5, 0x4

    and-int/lit8 v6, v6, 0xf

    aget-byte v6, v4, v6

    aput-byte v6, v0, v2

    add-int/lit8 v2, v3, 0x1

    and-int/lit8 v5, v5, 0xf

    .line 4
    aget-byte v4, v4, v5

    aput-byte v4, v0, v3

    add-int/lit8 v1, v1, 0x1

    goto :goto_7

    :cond_23
    return-object v0
.end method

.method protected pos(B)I
    .registers 5

    .line 1
    # getter for: Lcom/amazonaws/util/Base16Codec$LazyHolder;->DECODED:[B
    invoke-static {}, Lcom/amazonaws/util/Base16Codec$LazyHolder;->access$000()[B

    move-result-object v0

    aget-byte v0, v0, p1

    const/4 v1, -0x1

    if-le v0, v1, :cond_a

    return v0

    .line 2
    :cond_a
    new-instance v0, Ljava/lang/IllegalArgumentException;

    new-instance v1, Ljava/lang/StringBuilder;

    invoke-direct {v1}, Ljava/lang/StringBuilder;-><init>()V

    const-string v2, "Invalid base 16 character: \'"

    invoke-virtual {v1, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    int-to-char p1, p1

    invoke-virtual {v1, p1}, Ljava/lang/StringBuilder;->append(C)Ljava/lang/StringBuilder;

    const-string p1, "\'"

    invoke-virtual {v1, p1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    invoke-virtual {v1}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object p1

    invoke-direct {v0, p1}, Ljava/lang/IllegalArgumentException;-><init>(Ljava/lang/String;)V

    throw v0
.end method