com.android.signflinger

Class CachedZipArchive

java.lang.Object

com.android.zipflinger.ZipArchive

com.android.signflinger.CachedZipArchive

All Implemented Interfaces:

com.android.zipflinger.Archive, java.io.Closeable, java.lang.AutoCloseable

public class CachedZipArchive
extends com.android.zipflinger.ZipArchive

Cache the content of BytesSource for fast retrieval. This is useful in the context of V1 signing where a file is added to a zip only to be later extracted from it when the V1 Signing Engine decides to inspect its content.

There is not point keeping an entry in the cache once it has been requested by the V1 sign engine. Therefore, a cache entry is removed upon a cache hit.

Since the V1 signing engine ask to inspect an entry right away (as soon as "add" is called), and since each cache entry is deleted when the content has been retrieved, this class has little impact on the memory usage.

Constructor Summary

Constructors

Constructor and Description
CachedZipArchive(java.io.File file)

Method Summary

Modifier and Type	Method and Description
void	add(com.android.zipflinger.BytesSource source)
void	delete(java.lang.String name)
java.nio.ByteBuffer	getContent(java.lang.String name)

Methods inherited from class com.android.zipflinger.ZipArchive

add, close, closeWithInfo, getFile, isClosed, listEntries, listEntries

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachedZipArchive

public CachedZipArchive(@NonNull
                        java.io.File file)
                 throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getContent

@Nullable
public java.nio.ByteBuffer getContent(@NonNull
                                                java.lang.String name)
                                         throws java.io.IOException

Overrides:

getContent in class com.android.zipflinger.ZipArchive

Throws:

java.io.IOException

add

public void add(@NonNull
                com.android.zipflinger.BytesSource source)
         throws java.io.IOException

Specified by:

add in interface com.android.zipflinger.Archive

Overrides:

add in class com.android.zipflinger.ZipArchive

Throws:

java.io.IOException

delete

public void delete(@NonNull
                   java.lang.String name)

Specified by:

delete in interface com.android.zipflinger.Archive

Overrides:

delete in class com.android.zipflinger.ZipArchive