[Feature] Print functionality

[joshuaebert]

Hey,
this PR introduces a Print operation. It's able to print any text (including registers) to the output.

Kind regards
Joshua

[CLAassistant]

All committers have signed the CLA.

[a3957273]

Hey @joshuaebert, thanks so much for the contribution. A couple of things:

• Could you add some tests to this operation? See some other PRs for how you can do that.
• Could you give me an example of a use of this operation? I think I'm failing to see how this is different to a 'concatenate' operator, or with the replace operator how this is different to just starting a new input? You're presumably losing all history from the flow.

[joshuaebert]

Hey @a3957273,
I'll add some tests once I find the time. Totally forgot about them. Sorry about that 😄

My motivation behind the print operation came from an assignment one of my professors gave my class to create an AES encryption/decryption workflow using cyberchef.
The naive solution was to split encryption and decryption into two recipes, manually copying the output of the encryption recipe to the input of the decryption recipe. My goal was to allow encryption and decryption in a single recipe which would be possible using the print operation I quickly implemented. I can provide you with a screenshot once I'm home.
If theres already the possibility to do that which I missed then I would love to know how. 😄

[a3957273]

So I'm not necessarily against multiple operators that do the same thing if one of them is a simpler to use common case of a more powerful operator. For instance, I suspect the Replace operator can be used in the same way as the Print operator with the replace option enabled:

https://gchq.github.io/CyberChef/#recipe=AES_Encrypt(%7B'option':'Hex','string':'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'%7D,%7B'option':'Hex','string':'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'%7D,'CBC','Raw','Hex',%7B'option':'Hex','string':''%7D)Find_/_Replace(%7B'option':'Regex','string':'%5E.*$'%7D,'5d779917b67d9942027d432f507076b22f0f51acf4a5903e65e03b5e0661e5d9',true,false,false,true)AES_Decrypt(%7B'option':'Hex','string':'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'%7D,%7B'option':'Hex','string':'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'%7D,'CBC','Hex','Raw',%7B'option':'Hex','string':''%7D,%7B'option':'Hex','string':''%7D)&input=U3VjaCB0ZXh0LCBtdWNoIHdvdy4&oeol=FF

But using the replace operator is more complex. That being said, I'm still not necessarily sure I see a valid workflow that this works for, so if you could share your use case then that might make it clearer to me! :)

I don't believe there's a replacement to the Print operator without the replace option, but maybe a Concatenate operator would be more what you're aiming for?