jburkardt

ROT13\ Apply “ROT13” Transformation to a File {#rot13-apply-rot13-transformation-to-a-file align=”center”} ======================================


ROT13 is a C++ program which reads a file and makes a copy in which all characters have been “rotated” by 13 positions, and all digits have been “rotated” by 5 positions.

Applying ROT13 to the transformed file returns the original. Thus, ROT13 can be used as a very simply method of encoding and decoding text files. Only an idiot would be fooled by this encoding, but nonetheless the encoding serves a number of useful purposes. And often, it’s only idiots you have to fool, after all.

Usage: {#usage align=”center”}

rot13 file1.txt

where

The output filename is the ROT13 transformation of the input filename. In the case of “file1.txt”, the output filename would be svyr6.gkg.

Licensing: {#licensing align=”center”}

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages: {#languages align=”center”}

ROT13 is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

CAESAR, a C++ library which can apply a Caesar Shift Cipher to a string of text.

CR2LF, a C++ program which reads a text file and replaces carriage returns by line feeds.

CRRM, a C++ program which reads a text file and writes a copy which has no carriage returns.

DEBLANK, a C++ program which makes a copy of a text file in which blank lines have been removed.

DECOMMENT, a C++ program which makes a copy of a text file which contains no “comment” lines (that begin with “#”).

FILUM, a C++ library which performs various operations on files.

REWORD, a C++ program which makes a copy of a file in which each line has the same number of “words”.

UNCONTROL, a C++ program which makes a copy of a text file which contains no control characters.

WRAP, a C++ program which makes a copy of a text file in which long lines have been wrapped.

Source Code: {#source-code align=”center”}

Examples and Tests: {#examples-and-tests align=”center”}

List of Routines: {#list-of-routines align=”center”}

You can go up one level to the C++ source codes.


Last revised on 21 May 2011.