granularity level: instruction
.class final Lcom/google/firebase/messaging/ByteStreams;
.super Ljava/lang/Object;
.source "ByteStreams.java"
.annotation system Ldalvik/annotation/MemberClasses;
value = {
Lcom/google/firebase/messaging/ByteStreams$LimitedInputStream;
}
.end annotation
.field private static final BUFFER_SIZE:I = 0x2000
.field private static final MAX_ARRAY_LEN:I = 0x7ffffff7
.field private static final TO_BYTE_ARRAY_DEQUE_SIZE:I = 0x14
.method private constructor <init>()V
.locals 0
invoke-direct {p0}, Ljava/lang/Object;-><init>()V
return-void
.end method
.method private static combineBuffers(Ljava/util/Queue;I)[B
.locals 6
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Ljava/util/Queue<",
"[B>;I)[B"
}
.end annotation
invoke-interface {p0}, Ljava/util/Queue;->isEmpty()Z
move-result v0
const/4 v1, 0x0
if-eqz v0, :cond_0
new-array p0, v1, [B
return-object p0
:cond_0
invoke-interface {p0}, Ljava/util/Queue;->remove()Ljava/lang/Object;
move-result-object v0
check-cast v0, [B
array-length v2, v0
if-ne v2, p1, :cond_1
return-object v0
:cond_1
array-length v2, v0
sub-int v2, p1, v2
invoke-static {v0, p1}, Ljava/util/Arrays;->copyOf([BI)[B
move-result-object v0
:goto_0
if-lez v2, :cond_2
invoke-interface {p0}, Ljava/util/Queue;->remove()Ljava/lang/Object;
move-result-object v3
check-cast v3, [B
array-length v4, v3
invoke-static {v2, v4}, Ljava/lang/Math;->min(II)I
move-result v4
sub-int v5, p1, v2
invoke-static {v3, v1, v0, v5, v4}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
sub-int/2addr v2, v4
goto :goto_0
:cond_2
return-object v0
.end method
.method static createBuffer()[B
.locals 1
const/16 v0, 0x2000
new-array v0, v0, [B
return-object v0
.end method
.method public static limit(Ljava/io/InputStream;J)Ljava/io/InputStream;
.locals 1
new-instance v0, Lcom/google/firebase/messaging/ByteStreams$LimitedInputStream;
invoke-direct {v0, p0, p1, p2}, Lcom/google/firebase/messaging/ByteStreams$LimitedInputStream;-><init>(Ljava/io/InputStream;J)V
return-object v0
.end method
.method private static saturatedCast(J)I
.locals 3
const-wide/32 v0, 0x7fffffff
cmp-long v2, p0, v0
if-lez v2, :cond_0
const p0, 0x7fffffff
return p0
:cond_0
const-wide/32 v0, -0x80000000
cmp-long v2, p0, v0
if-gez v2, :cond_1
const/high16 p0, -0x80000000
return p0
:cond_1
long-to-int p1, p0
return p1
.end method
.method public static toByteArray(Ljava/io/InputStream;)[B
.locals 2
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
new-instance v0, Ljava/util/ArrayDeque;
const/16 v1, 0x14
invoke-direct {v0, v1}, Ljava/util/ArrayDeque;-><init>(I)V
const/4 v1, 0x0
invoke-static {p0, v0, v1}, Lcom/google/firebase/messaging/ByteStreams;->toByteArrayInternal(Ljava/io/InputStream;Ljava/util/Queue;I)[B
move-result-object p0
return-object p0
.end method
.method private static toByteArrayInternal(Ljava/io/InputStream;Ljava/util/Queue;I)[B
.locals 7
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
.annotation system Ldalvik/annotation/Signature;
value = {
"(",
"Ljava/io/InputStream;",
"Ljava/util/Queue<",
"[B>;I)[B"
}
.end annotation
invoke-static {p2}, Ljava/lang/Integer;->highestOneBit(I)I
move-result v0
const/4 v1, 0x2
mul-int/lit8 v0, v0, 0x2
const/16 v2, 0x80
invoke-static {v2, v0}, Ljava/lang/Math;->max(II)I
move-result v0
const/16 v2, 0x2000
invoke-static {v2, v0}, Ljava/lang/Math;->min(II)I
move-result v0
:goto_0
const/4 v2, -0x1
const v3, 0x7ffffff7
if-ge p2, v3, :cond_3
sub-int/2addr v3, p2
invoke-static {v0, v3}, Ljava/lang/Math;->min(II)I
move-result v3
new-array v4, v3, [B
invoke-interface {p1, v4}, Ljava/util/Queue;->add(Ljava/lang/Object;)Z
const/4 v5, 0x0
:goto_1
if-ge v5, v3, :cond_1
sub-int v6, v3, v5
invoke-virtual {p0, v4, v5, v6}, Ljava/io/InputStream;->read([BII)I
move-result v6
if-ne v6, v2, :cond_0
invoke-static {p1, p2}, Lcom/google/firebase/messaging/ByteStreams;->combineBuffers(Ljava/util/Queue;I)[B
move-result-object p0
return-object p0
:cond_0
add-int/2addr v5, v6
add-int/2addr p2, v6
goto :goto_1
:cond_1
int-to-long v2, v0
const/16 v4, 0x1000
if-ge v0, v4, :cond_2
const/4 v0, 0x4
goto :goto_2
:cond_2
const/4 v0, 0x2
:goto_2
int-to-long v4, v0
mul-long v2, v2, v4
invoke-static {v2, v3}, Lcom/google/firebase/messaging/ByteStreams;->saturatedCast(J)I
move-result v0
goto :goto_0
:cond_3
invoke-virtual {p0}, Ljava/io/InputStream;->read()I
move-result p0
if-ne p0, v2, :cond_4
invoke-static {p1, v3}, Lcom/google/firebase/messaging/ByteStreams;->combineBuffers(Ljava/util/Queue;I)[B
move-result-object p0
return-object p0
:cond_4
new-instance p0, Ljava/lang/OutOfMemoryError;
const-string p1, "input is too large to fit in a byte array"
invoke-direct {p0, p1}, Ljava/lang/OutOfMemoryError;-><init>(Ljava/lang/String;)V
throw p0
.end method