GZipUtil.smali

.class public final Lcom/cleanmaster/base/util/compress/GZipUtil;
.super Ljava/lang/Object;
.source "GZipUtil.java"


# static fields
.field private static final MAXBUFFERSIZE:I = 0x400


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

    .prologue
    .line 10
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method

.method public static gZip([BII)[B
    .registers 5
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .prologue
    .line 22
    if-eqz p0, :cond_9

    if-ltz p1, :cond_9

    array-length v0, p0

    add-int v1, p1, p2

    if-ge v0, v1, :cond_b

    .line 24
    :cond_9
    const/4 v0, 0x0

    .line 35
    :goto_a
    return-object v0

    .line 27
    :cond_b
    new-instance v1, Ljava/io/ByteArrayOutputStream;

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

    .line 28
    new-instance v0, Ljava/util/zip/GZIPOutputStream;

    invoke-direct {v0, v1, p2}, Ljava/util/zip/GZIPOutputStream;-><init>(Ljava/io/OutputStream;I)V

    .line 29
    invoke-virtual {v0, p0, p1, p2}, Ljava/util/zip/GZIPOutputStream;->write([BII)V

    .line 30
    invoke-virtual {v0}, Ljava/util/zip/GZIPOutputStream;->finish()V

    .line 31
    invoke-virtual {v0}, Ljava/util/zip/GZIPOutputStream;->close()V

    .line 33
    invoke-virtual {v1}, Ljava/io/ByteArrayOutputStream;->toByteArray()[B

    move-result-object v0

    .line 34
    invoke-virtual {v1}, Ljava/io/ByteArrayOutputStream;->close()V

    goto :goto_a
.end method

.method public static unGZip([BII)[B
    .registers 12
    .annotation system Ldalvik/annotation/Throws;
        value = {
            Ljava/io/IOException;
        }
    .end annotation

    .prologue
    const/16 v8, 0x400

    const/4 v7, 0x0

    .line 116
    if-eqz p0, :cond_d

    array-length v0, p0

    if-le v0, p1, :cond_d

    array-length v0, p0

    add-int v1, p1, p2

    if-ge v0, v1, :cond_f

    .line 118
    :cond_d
    const/4 v0, 0x0

    .line 145
    :goto_e
    return-object v0

    .line 120
    :cond_f
    new-instance v1, Ljava/io/ByteArrayInputStream;

    invoke-direct {v1, p0, p1, p2}, Ljava/io/ByteArrayInputStream;-><init>([BII)V

    .line 121
    new-instance v2, Ljava/util/zip/GZIPInputStream;

    invoke-direct {v2, v1}, Ljava/util/zip/GZIPInputStream;-><init>(Ljava/io/InputStream;)V

    .line 124
    new-instance v3, Ljava/io/DataInputStream;

    invoke-direct {v3, v2}, Ljava/io/DataInputStream;-><init>(Ljava/io/InputStream;)V

    .line 126
    new-instance v4, Ljava/io/ByteArrayOutputStream;

    invoke-direct {v4}, Ljava/io/ByteArrayOutputStream;-><init>()V

    .line 127
    new-array v0, v8, [B

    .line 128
    :goto_25
    invoke-virtual {v3, v0, v7, v8}, Ljava/io/DataInputStream;->read([BII)I

    move-result v5

    const/4 v6, -0x1

    if-eq v5, v6, :cond_30

    .line 129
    invoke-virtual {v4, v0, v7, v5}, Ljava/io/ByteArrayOutputStream;->write([BII)V

    goto :goto_25

    .line 133
    :cond_30
    invoke-virtual {v4}, Ljava/io/ByteArrayOutputStream;->flush()V

    .line 134
    invoke-virtual {v4}, Ljava/io/ByteArrayOutputStream;->toByteArray()[B

    move-result-object v0

    .line 135
    invoke-virtual {v4}, Ljava/io/ByteArrayOutputStream;->close()V

    .line 138
    invoke-virtual {v3}, Ljava/io/DataInputStream;->close()V

    .line 139
    invoke-virtual {v2}, Ljava/util/zip/GZIPInputStream;->close()V

    .line 140
    invoke-virtual {v1}, Ljava/io/ByteArrayInputStream;->close()V

    .line 143
    invoke-static {}, Ljava/lang/System;->gc()V

    goto :goto_e
.end method