Files
ioccc/1989/ovdluhe
Landon Curt Noll 21c3e89a2f improve tarballs
The `make quick_www` and `make www` rules in the top level `Makefile`
no longer build compressed tarballs.

The tools that form compressed tarballs now add _--no-xattrs --no-selinux_
when building compressed tarballs.

Changed `bin/tar-all.sh` VERSION from "1.0.1 2024-02-23"
to "1.1 2024-02-27".

Changed `bin/tar-entry.sh` VERSION from "1.0.1 2024-02-23"
to "1.1 2024-02-27".

Changed `bin/tar-year.sh` VERSION from "1.0.1 2024-02-23"
to "1.1 2024-02-27".

Added `make tar` rule to the top level `Makefile` to create all
compressed tarballs.  In particular `make tar` calls:

* make clobber
* make genpath
* make genfilelist
* make verify_entry_files
* make form_entry_tarball
* make form_year_tarball
* make form_all_tarball

Performed `make tar` in an effort to see of tar warnings such as
have been fixed:

```
tar: Ignoring unknown extended header keyword 'LIBARCHIVE.xattr.com.apple.quarantine'
```

**NOTE**: We to **NOT** plan to rebuild compressed tarballs while some of the
((**top priority**)) issues are active.  We only rebuilt the compressed tarballs
as a test.
2024-02-27 23:21:32 -08:00
..
2024-02-01 14:35:49 -08:00
2024-02-27 23:21:32 -08:00
2023-10-19 05:19:58 -07:00
2023-07-06 21:49:38 -07:00
2024-01-15 04:29:39 -08:00

To build:

make all

To get this to compile with a modern CPP, we had to replace #D with #define.

To use:

Run the program this way:

./ovdluhe < textfile

The program stops when it reaches the end of the template buffer by chance or is killed.

Try:

./try.sh ; sleep 2 ; ./try.sh

Alternate code:

The author suggested that one varies the definition of P from 2 through 10. As it's a #define it's easy to set up.

Alternate build:

make P=9 clobber alt

You do not have to define P but if you do you can replace the value with whatever you wish, as long as it's a positive int (or evaluates to a positive int like the default (A<<AP) does). Too high a value will likely cause the program to fail and a negative value will cause a compilation error.

Alternate use:

./ovdluhe.alt

Alternate try:

./try.alt.sh

P=5 ./try.alt.sh

NOTE: if you specify too high a value for P the program might fail. If you specify a value < 0 it will fail to compile.

Judges' remarks:

Run this program using your favorite text file as input. Files such as mailboxes, man pages and usenet articles are especially recommended. You will get different output each time you run it.

Author's remarks:

This program implements an "Eddington ape" - it generates random text from a supplied template. The template text file is read through stdin. The larger the template, the better the result. A maximum of 2**12 chars are used. From the template, the program calculates the statistics of chars that immediately follow a given string (correlator string) of a certain length (currently 4 - can be varied by changing the definition for P accordingly). A character is randomly chosen, weighted by its probability to occur after the correlator string. That character is printed to stdout and placed at the end of the correlator string, whose first character is discarded. Meaningful words are therefore usually preserved, the effect on sentences can be dramatically random.

You might want to vary the definition of P between 2 and 10 and observe the result.

This file is Copyright (c) 2023 by Landon Curt Noll. All Rights Reserved. You are free to share and adapt this file under the terms of this license:

Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)

For more information, see: https://creativecommons.org/licenses/by-sa/4.0/