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martinav
Super User
Super User

Method to rotate a PDF CLOSE to completion!

How hard should I work to make this happen?  I think I found a way... Should I write it up?

1 ACCEPTED SOLUTION

Accepted Solutions

I bailed on this.  Its not happening.  Too much effort.

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4 REPLIES 4
v-xida-msft
Community Support
Community Support

Hi @martinav ,

Yeah. Thanks for your sharing firstly.

I think the solution you provided here would help many other users within this forum. I would also share this method to my colleagues.

 

Best regards,

Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

@v-xida-msft ,

 

Its NOT pretty...  it involves doing some crazy base64 conversions and edits (is MS Flow) to change '/rotate 0/' to '/rotate 90/'.  Its gotten VERY complicated.  Its not quite working yet, and its exceedingly slow, because you have to do a "do until" loop to find the index of where its located in the base 64 file.  Being that base64 works in 4 character chunks, its really messy.  I had to put it aside for now.  

 

Steps to completion:

  1. Find '/rotate 0/' in the base64 code (done)
  2. Find the index of the full block of base64 code that contains the '/rotate 0/' code. (done)
  3. strip off any extra characters from the last block (working on this now)
  4. Replace '/rotate 0/' with '/rotate 90/' in a full block (done)
  5. piece together new first half of the file with the 2nd half of the file (done)

I was so close when I realized I was losing data from the last block when '/rotate 0/' only filled part of the last block.

 

I cant believe how complex it has gotten.  Its like 25 steps right now.  Even when its done, if I cant narrow down the index of '/rotate 0/' more precicely, it may be too slow.  It has taken 30s to a minute until the "do until" is finished.

 

*PRELIMINARY* View:

 

image.png

I bailed on this.  Its not happening.  Too much effort.

Sgeo
Regular Visitor

Hi @martinav , for some reason i cannot explain, when i am in pdf viewer of my desktop app and hit with barcode scanner a qr code with link , pdf rotates one time clock wise!!! Qr code contains for example https://www.xxxxxxx.com. Maybe Carriage Return and Line Feed together is the solution!!!

 

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