com.weebly.opus1269.clipman.backup

Class ZipHelper

java.lang.Object

com.weebly.opus1269.clipman.backup.ZipHelper

public class ZipHelper
extends java.lang.Object

Singleton to manage Zip Files

Field Summary

Fields

Modifier and Type	Field and Description
private android.content.Context	mContext Global Application Context
private static ZipHelper	sInstance
private java.lang.String	TAG Class identifier

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ZipHelper(android.content.Context context)

Method Summary

Modifier and Type	Method and Description
(package private) byte[]	createContents(java.lang.String filename, byte[] contents) Create the contents of a zip file with one file
(package private) byte[]	extractContents(java.lang.String filename, java.io.BufferedInputStream bis) Extract the data for a file from a ZipFile
static ZipHelper	INST(android.content.Context context) Lazily create our instance

Methods inherited from class java.lang.Object

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

Field Detail

sInstance

private static ZipHelper sInstance

mContext

private final android.content.Context mContext

Global Application Context

TAG

private final java.lang.String TAG

Class identifier

Constructor Detail

ZipHelper

private ZipHelper(@NonNull
                  android.content.Context context)

Method Detail

INST

public static ZipHelper INST(@NonNull
                             android.content.Context context)

Lazily create our instance

Parameters:

context - any old context

createContents

@Nullable
byte[] createContents(@NonNull
                                 java.lang.String filename,
                                 @NonNull
                                 byte[] contents)
                          throws java.io.IOException

Create the contents of a zip file with one file

Parameters:

filename - name of file to add

contents - contents of file to add

Returns:

zip file contents

Throws:

java.io.IOException

extractContents

@Nullable
byte[] extractContents(@NonNull
                                  java.lang.String filename,
                                  @NonNull
                                  java.io.BufferedInputStream bis)

Extract the data for a file from a ZipFile

Parameters:

filename - file to extract

bis - zip file contents

Returns:

contents of file