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How to read / write a .tar file?

  • April 12, 2018
  • 3 replies
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Hello,

Is it possible to read and unzip .tar files?

 

 

I have an interesting project that starts with a .tar file, I need to unzip that to get a .gz file, need to unzip that to get another .tar file, one final unzip to get a folder containing the data I need to edit.

 

So in short the structure:

 

.tar -> unzip -> .gz -> unzip -> .tar -> unzip = folder containing DBF and SHP files I need to edit.

 

Once edits have been made I need to zip everything back up in reverse order.

How would I do this?

 

Thanks, all the best,

 

Ed

Best answer by takashi

Hi @edhere, FME doesn't directly support packing/unpacking with gz and tar format. However, if you install an external command line tool which supports gz and tar, you can embed its functionality to a workspace using the SystemCaller transformer.

Probably 7-Zip is a good tool for your purpose. 7-Zip installation contains a help documentation including how to use it from command line.

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3 replies

takashi
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  • takashiCelebrity
  • 7843 replies
  • Best Answer
  • April 12, 2018

Hi @edhere, FME doesn't directly support packing/unpacking with gz and tar format. However, if you install an external command line tool which supports gz and tar, you can embed its functionality to a workspace using the SystemCaller transformer.

Probably 7-Zip is a good tool for your purpose. 7-Zip installation contains a help documentation including how to use it from command line.

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
takashi
Celebrity
  • takashiCelebrity
  • 7843 replies
  • April 12, 2018

Hi @edhere, FME doesn't directly support packing/unpacking with gz and tar format. However, if you install an external command line tool which supports gz and tar, you can embed its functionality to a workspace using the SystemCaller transformer.

Probably 7-Zip is a good tool for your purpose. 7-Zip installation contains a help documentation including how to use it from command line.

I tested extracting process using 7-Zip and SystemCallers, and it worked fine. Assuming these parameters are defined.

 

  • $(7Z_EXE): The "7z.exe" file path
  • $(SOURCE_TAR): The source "*.tar" file path
  • $(DEST_FOLER): A directory path to which extracted folder will be saved finally.

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
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  • edhere
  • Author
  • 60 replies
  • April 13, 2018

Thanks @takashi , I'll give it a try.

Best,

 

Ed

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