Base64Util.smali

.class public Lcom/iwangding/basis/util/Base64Util;
.super Ljava/lang/Object;
.source "Base64Util.java"


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


# direct methods
.method static constructor <clinit>()V
    .registers 1

    .prologue
    .line 8
    const-string v0, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"

    invoke-virtual {v0}, Ljava/lang/String;->toCharArray()[C

    move-result-object v0

    sput-object v0, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    return-void
.end method

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

    .prologue
    .line 7
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method private static decode(C)I
    .registers 4

    .prologue
    .line 55
    const/16 v0, 0x41

    if-lt p0, v0, :cond_b

    const/16 v0, 0x5a

    if-gt p0, v0, :cond_b

    .line 56
    add-int/lit8 v0, p0, -0x41

    .line 68
    :goto_a
    return v0

    .line 57
    :cond_b
    const/16 v0, 0x61

    if-lt p0, v0, :cond_18

    const/16 v0, 0x7a

    if-gt p0, v0, :cond_18

    .line 58
    add-int/lit8 v0, p0, -0x61

    add-int/lit8 v0, v0, 0x1a

    goto :goto_a

    .line 59
    :cond_18
    const/16 v0, 0x30

    if-lt p0, v0, :cond_27

    const/16 v0, 0x39

    if-gt p0, v0, :cond_27

    .line 60
    add-int/lit8 v0, p0, -0x30

    add-int/lit8 v0, v0, 0x1a

    add-int/lit8 v0, v0, 0x1a

    goto :goto_a

    .line 62
    :cond_27
    sparse-switch p0, :sswitch_data_4c

    .line 70
    new-instance v0, Ljava/lang/RuntimeException;

    new-instance v1, Ljava/lang/StringBuilder;

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

    const-string v2, "unexpected code: "

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

    move-result-object v1

    invoke-virtual {v1, p0}, Ljava/lang/StringBuilder;->append(C)Ljava/lang/StringBuilder;

    move-result-object v1

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

    move-result-object v1

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

    throw v0

    .line 64
    :sswitch_43
    const/16 v0, 0x3e

    goto :goto_a

    .line 66
    :sswitch_46
    const/16 v0, 0x3f

    goto :goto_a

    .line 68
    :sswitch_49
    const/4 v0, 0x0

    goto :goto_a

    .line 62
    nop

    :sswitch_data_4c
    .sparse-switch
        0x2b -> :sswitch_43
        0x2f -> :sswitch_46
        0x3d -> :sswitch_49
    .end sparse-switch
.end method

.method private static decode(Ljava/lang/String;Ljava/io/OutputStream;)V
    .registers 7

    .prologue
    const/16 v4, 0x3d

    .line 98
    const/4 v0, 0x0

    .line 100
    invoke-virtual {p0}, Ljava/lang/String;->length()I

    move-result v1

    .line 103
    :goto_7
    if-ge v0, v1, :cond_14

    invoke-virtual {p0, v0}, Ljava/lang/String;->charAt(I)C

    move-result v2

    const/16 v3, 0x20

    if-gt v2, v3, :cond_14

    .line 104
    add-int/lit8 v0, v0, 0x1

    goto :goto_7

    .line 106
    :cond_14
    if-ne v0, v1, :cond_17

    .line 122
    :cond_16
    return-void

    .line 109
    :cond_17
    invoke-virtual {p0, v0}, Ljava/lang/String;->charAt(I)C

    move-result v2

    invoke-static {v2}, Lcom/iwangding/basis/util/Base64Util;->decode(C)I

    move-result v2

    shl-int/lit8 v2, v2, 0x12

    add-int/lit8 v3, v0, 0x1

    invoke-virtual {p0, v3}, Ljava/lang/String;->charAt(I)C

    move-result v3

    invoke-static {v3}, Lcom/iwangding/basis/util/Base64Util;->decode(C)I

    move-result v3

    shl-int/lit8 v3, v3, 0xc

    add-int/2addr v2, v3

    add-int/lit8 v3, v0, 0x2

    invoke-virtual {p0, v3}, Ljava/lang/String;->charAt(I)C

    move-result v3

    invoke-static {v3}, Lcom/iwangding/basis/util/Base64Util;->decode(C)I

    move-result v3

    shl-int/lit8 v3, v3, 0x6

    add-int/2addr v2, v3

    add-int/lit8 v3, v0, 0x3

    .line 110
    invoke-virtual {p0, v3}, Ljava/lang/String;->charAt(I)C

    move-result v3

    invoke-static {v3}, Lcom/iwangding/basis/util/Base64Util;->decode(C)I

    move-result v3

    add-int/2addr v2, v3

    .line 112
    shr-int/lit8 v3, v2, 0x10

    and-int/lit16 v3, v3, 0xff

    invoke-virtual {p1, v3}, Ljava/io/OutputStream;->write(I)V

    .line 113
    add-int/lit8 v3, v0, 0x2

    invoke-virtual {p0, v3}, Ljava/lang/String;->charAt(I)C

    move-result v3

    if-eq v3, v4, :cond_16

    .line 115
    shr-int/lit8 v3, v2, 0x8

    and-int/lit16 v3, v3, 0xff

    invoke-virtual {p1, v3}, Ljava/io/OutputStream;->write(I)V

    .line 116
    add-int/lit8 v3, v0, 0x3

    invoke-virtual {p0, v3}, Ljava/lang/String;->charAt(I)C

    move-result v3

    if-eq v3, v4, :cond_16

    .line 118
    and-int/lit16 v2, v2, 0xff

    invoke-virtual {p1, v2}, Ljava/io/OutputStream;->write(I)V

    .line 120
    add-int/lit8 v0, v0, 0x4

    .line 121
    goto :goto_7
.end method

.method public static decode(Ljava/lang/String;)[B
    .registers 6

    .prologue
    .line 81
    new-instance v0, Ljava/io/ByteArrayOutputStream;

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

    .line 83
    :try_start_5
    invoke-static {p0, v0}, Lcom/iwangding/basis/util/Base64Util;->decode(Ljava/lang/String;Ljava/io/OutputStream;)V
    :try_end_8
    .catch Ljava/io/IOException; {:try_start_5 .. :try_end_8} :catch_10

    .line 87
    invoke-virtual {v0}, Ljava/io/ByteArrayOutputStream;->toByteArray()[B

    move-result-object v1

    .line 89
    :try_start_c
    invoke-virtual {v0}, Ljava/io/ByteArrayOutputStream;->close()V
    :try_end_f
    .catch Ljava/io/IOException; {:try_start_c .. :try_end_f} :catch_17

    .line 94
    :goto_f
    return-object v1

    .line 84
    :catch_10
    move-exception v0

    .line 85
    new-instance v0, Ljava/lang/RuntimeException;

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

    throw v0

    .line 91
    :catch_17
    move-exception v0

    .line 92
    sget-object v2, Ljava/lang/System;->err:Ljava/io/PrintStream;

    new-instance v3, Ljava/lang/StringBuilder;

    invoke-direct {v3}, Ljava/lang/StringBuilder;-><init>()V

    const-string v4, "Error while decoding BASE64: "

    invoke-virtual {v3, v4}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v3

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

    move-result-object v0

    invoke-virtual {v3, v0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v0

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

    move-result-object v0

    invoke-virtual {v2, v0}, Ljava/io/PrintStream;->println(Ljava/lang/String;)V

    goto :goto_f
.end method

.method public static encode([B)Ljava/lang/String;
    .registers 10

    .prologue
    const/4 v1, 0x0

    .line 11
    .line 12
    array-length v4, p0

    .line 13
    new-instance v5, Ljava/lang/StringBuffer;

    array-length v0, p0

    mul-int/lit8 v0, v0, 0x3

    div-int/lit8 v0, v0, 0x2

    invoke-direct {v5, v0}, Ljava/lang/StringBuffer;-><init>(I)V

    .line 15
    add-int/lit8 v6, v4, -0x3

    move v2, v1

    move v0, v1

    .line 19
    :goto_10
    if-gt v0, v6, :cond_63

    .line 20
    aget-byte v3, p0, v0

    and-int/lit16 v3, v3, 0xff

    shl-int/lit8 v3, v3, 0x10

    add-int/lit8 v7, v0, 0x1

    aget-byte v7, p0, v7

    and-int/lit16 v7, v7, 0xff

    shl-int/lit8 v7, v7, 0x8

    or-int/2addr v3, v7

    add-int/lit8 v7, v0, 0x2

    aget-byte v7, p0, v7

    and-int/lit16 v7, v7, 0xff

    or-int/2addr v3, v7

    .line 23
    sget-object v7, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v8, v3, 0x12

    and-int/lit8 v8, v8, 0x3f

    aget-char v7, v7, v8

    invoke-virtual {v5, v7}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 24
    sget-object v7, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v8, v3, 0xc

    and-int/lit8 v8, v8, 0x3f

    aget-char v7, v7, v8

    invoke-virtual {v5, v7}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 25
    sget-object v7, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v8, v3, 0x6

    and-int/lit8 v8, v8, 0x3f

    aget-char v7, v7, v8

    invoke-virtual {v5, v7}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 26
    sget-object v7, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    and-int/lit8 v3, v3, 0x3f

    aget-char v3, v7, v3

    invoke-virtual {v5, v3}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 28
    add-int/lit8 v3, v0, 0x3

    .line 30
    add-int/lit8 v0, v2, 0x1

    const/16 v7, 0xe

    if-lt v2, v7, :cond_60

    .line 32
    const-string v0, " "

    invoke-virtual {v5, v0}, Ljava/lang/StringBuffer;->append(Ljava/lang/String;)Ljava/lang/StringBuffer;

    move v0, v1

    :cond_60
    move v2, v0

    move v0, v3

    .line 34
    goto :goto_10

    .line 36
    :cond_63
    add-int v2, v1, v4

    add-int/lit8 v2, v2, -0x2

    if-ne v0, v2, :cond_a3

    .line 37
    aget-byte v1, p0, v0

    and-int/lit16 v1, v1, 0xff

    shl-int/lit8 v1, v1, 0x10

    add-int/lit8 v0, v0, 0x1

    aget-byte v0, p0, v0

    and-int/lit16 v0, v0, 0xff

    shl-int/lit8 v0, v0, 0x8

    or-int/2addr v0, v1

    .line 39
    sget-object v1, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v2, v0, 0x12

    and-int/lit8 v2, v2, 0x3f

    aget-char v1, v1, v2

    invoke-virtual {v5, v1}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 40
    sget-object v1, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v2, v0, 0xc

    and-int/lit8 v2, v2, 0x3f

    aget-char v1, v1, v2

    invoke-virtual {v5, v1}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 41
    sget-object v1, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v0, v0, 0x6

    and-int/lit8 v0, v0, 0x3f

    aget-char v0, v1, v0

    invoke-virtual {v5, v0}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 42
    const-string v0, "="

    invoke-virtual {v5, v0}, Ljava/lang/StringBuffer;->append(Ljava/lang/String;)Ljava/lang/StringBuffer;

    .line 51
    :cond_9e
    :goto_9e
    invoke-virtual {v5}, Ljava/lang/StringBuffer;->toString()Ljava/lang/String;

    move-result-object v0

    return-object v0

    .line 43
    :cond_a3
    add-int/2addr v1, v4

    add-int/lit8 v1, v1, -0x1

    if-ne v0, v1, :cond_9e

    .line 44
    aget-byte v0, p0, v0

    and-int/lit16 v0, v0, 0xff

    shl-int/lit8 v0, v0, 0x10

    .line 46
    sget-object v1, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v2, v0, 0x12

    and-int/lit8 v2, v2, 0x3f

    aget-char v1, v1, v2

    invoke-virtual {v5, v1}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 47
    sget-object v1, Lcom/iwangding/basis/util/Base64Util;->legalChars:[C

    shr-int/lit8 v0, v0, 0xc

    and-int/lit8 v0, v0, 0x3f

    aget-char v0, v1, v0

    invoke-virtual {v5, v0}, Ljava/lang/StringBuffer;->append(C)Ljava/lang/StringBuffer;

    .line 48
    const-string v0, "=="

    invoke-virtual {v5, v0}, Ljava/lang/StringBuffer;->append(Ljava/lang/String;)Ljava/lang/StringBuffer;

    goto :goto_9e
.end method