sohskd/FileUtility

A file utility to compress files into smaller chunks and decompress them back

A FileUtility for compression and decompression

This file utility has been tested on the following during development

• txt
• jar

Utilities

File Compression

The file compression feature supports compressing files & folders into the specified size in MB.

Steps

• Step 1

  • Create a Test Input Directory where this directory will contain the files to compress (eg C:\Des\Projects\FileUtil\TestInputs)
  • Create a Test Output Directory where this directory will contain the files after compression (eg C:\Des\Projects\FileUtil\TestOutputs)
  • Create a Test Decompressed Directory where this directory will contain the files after decompression (eg C:\Des\Projects\FileUtil\TestDecom)

• Step 2

  • Put in some test files in the Test Input Directory
  • Add some dummy or real files (eg On windows machine, you can make a 40MB file with fsutil file createnew testdummy2.txt 40000000)
  • You may create folders with files in it

• Step 3

  • Run the following command with 3 inputs (Test Input Directory Path, Test Output Directory Path and maximum size of files in MB)
    (eg mvn spring-boot:run -Dspring-boot.run.arguments="C:\Des\Projects\FileUtil\TestInputs,C:\Des\Projects\FileUtil\TestOutputs,10")

• Step 4

  • The resulting file will be split into the output directory where each file has the maximum size

File Decompression

The file compression feature supports decompressing zip files only

Steps

• Step 1

  • There should be zip files in the Test Output Directory after the file compression
  • You may unzip the zip file to view the contents where the files will be of the maximum size specified during the file compression step

• Step 2

  • Remove the unzipped folder in the Test Output Directory before running the decompression command.
  • There should only be zip files in the Test Output Directory
  • Run the following command with 2 inputs (Test Output Directory Path, Test Decompressed Directory) (eg mvn spring-boot:run -Dspring-boot.run.arguments="C:\Des\Projects\FileUtil\TestOutputs,C:\Des\Projects\FileUtil\TestDecom")

• Step 3

  • The resulting decompressed file will be in the Test Decompressed Directory

Important Notes

• There should only be zip files in the Test Output Directory before running decompression step
• The Test Decompressed Directory (where the files will be decompressed to) should be empty before running decompression step
• JVM Heap size should be 3GB and above to handle large files (eg 10 GB Files etc)