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496.Advanced search and replace -- How to do simple encryption of a text file by letter to letter remapping?

User: editor -- 2010-05-03          << 495  497 >>
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Type: Advanced search and replace   
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Description:
How to do simple encryption of a text file by letter to letter remapping?

I need to encryt one of my text file by following rules:
replace A-L(or a-l) with O-Z(or o-z) repectively, replace M-Z(or m-z) with A-N(or a-n) repectively.

After that, I can change the file back to original text with reversed mapping rules.
Input Sample:
This is a text before encryption.
Output Sample:
Hvwg wg o hslh pstcfs sbqfmdhwcb.
Answer:
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
1. ctrl-o open source text file
2. ctrl-h open replace dialog
* in 'replace with pattern', enter:

3. click 'Replace', done!
4. ctrl-s save to file.

Note:
* Above operation need version 2.54 at least, for the early version, you can use following expression in step 2:

* To change the text back, you just need do similar operation above, only change the expression in step 2 to:

Download Script:  scripts/496.rst.zip

Screenshot 1:  Replace_Window


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