-This is a collection of filters from various places, including:
+This is a collection of filters to do all sorts of strange things to text.
+B1ff, the Swedish Chef, and an eleet filter are included.
-http://www.princeton.edu/~mkporwit/pub_links/davido/slang/
+Since the original versions of these filters have copyright problems, I have
+done a "clean room" re-implementation of the original lex filters in perl. I
+did this without looking at the original code to the filters at all, I
+simply observed their output and drew my own conclusions, and wrote my own
+code. Then I compared the output of the original and new filters when ran on
+large bodies of text, and fixed the things I had missed.
-http://www.mathlab.sunysb.edu/~elijah/src.html
+Here are the results of my investigations of how the filters work:
-Collected by Joey Hess <joey@kite.ml.org>
+eleet:
+ This is the simplest filter to figure out. The letters a-z of
+ the alphabet are replaced with the following letters:
+ 4 b c d 3 f g h 1 j |< l /\/\ /\/ 0 p q r 5 + u \/ \/\/ >< y z
+ Note that the equivalent translation is done on upper-case letters.
+chef:
+ Personally my favorite filter. This took a bit of work to figure
+ out, and I doubt I have everything correct. Note that due to a bug
+ or an odd feature of the original program, it doesn't seem to think
+ that the first letter of the first word is really the first letter
+ of a word and so some of the words below don't trigger for that first
+ word. I did not emulate this behavior because I think it's probably a
+ bug.
-Note that the Makefile will get the filters to compile on Linux systems.
-Otherwise, you're on your own.
+ The word "bork" is never changed, no matter what any of these
+ rules may say. Neither is "Bork".
+ The following translations only happen to letters that are the first
+ letter of a word of at least 2 letters in size:
+ o -> oo
+ O -> Oo
-Descriptions of the filters:
+ These happen to letters that are not the last letter of a word:
+ a -> e
+ A -> e
-aust: Australian
-b1ff: The B1FF filter
-biffa: ??
-buck: The buckwheat filter
-censor: [CENSORED]
-chef: convert English on stdin to Mock Swedish on stdout
-cockney: Cockney English
-drawl: English to Texan translator
-fin: ??
-fudd: Elmer Fudd
-jethro: Hillbilly text filter
-jive: Jive English
-ken: English into Cockney, featuring (dubious) rhyming
- slang for a lot of computer terminology.
-kraut: German
-mb: Marc Barrett posting translator
-moo: The cow filter
-newspeak: As in 1984
-nyc: Brooklyn English
-valspeak: ??
-ky00te: This program places a very cute (and familiar to FurryMuck
- fans) accent to any text file.
+ These translations only happen if the letter is not the first letter
+ of a word:
+ f -> ff
+ i -> ee (but only the first `i' per word)
+ o -> u
+ u -> oo
-No racial or societal slurs are intended. For amusement only.
+ These translations always happen:
+ v -> f
+ V -> F
+ w -> v
+ W -> V
+ an -> un
+ An -> Un
+ au -> oo
+ Au -> Oo
+
+ Any occurrence of "e" at the end of a word is changed to "e-a".
+
+ Any occurrence of "e" and the beginning of a word is changed to "i".
+ Same with capitals.
+
+ Any occurrence of "the" is changed to "zee", any occurrence of
+ "The", to "Zee".
+
+ Any occurrence of "tion" in a word, to "shun".
+
+ Any "th" at the end of a word is changed to "t".
+
+ Any "en" at the end of a word is changed to "ee".
+
+ Any "ow" at the end of a word is changed to "oo".
+
+ And of course, after any `.', `?', or `!' that is at the end of a
+ line, the Chef prints out a new line, and then the famous
+ "Bork Bork Bork!", and then another newline.
+
+ Known bugs in this implementation:
+ - says "frunch", not "french".
+ - still quite buggy in general.
+
+b1ff:
+ Unlike the other filters, b1ff does not try to be an exact duplicate
+ of its predecessor.
+
+ After upper-casing everything, b1ff does some word and sub-word
+ substitutions, most of them misspellings.
+
+ B1ff also changes punctuation - All commas become periods; all
+ semicolons, commas. Question and exclamation marks are changed to
+ things like "!!!!1!" and "?!?!?!". It looks like the original filter
+ decided how long a sequence to print based on the text input before
+ the end of sentence. I took a simpler route and just randomized it.
+
+Written by Joey Hess <joey@kitenet.net>
# Fix the word "bork", which will have been mangled to "burk"
# by above commands. Note that any occurence of "burk" in the input
# gets changed to "boork", so it's completly safe to do this:
-s/\bburk\b/bork/;
+s/\b([Bb])urk\b/$1ork/g;
# Stuff to do to letters that are the first letter of any word.
s/\be/i/g;
s/\bE/I/g;
# Stuff that always happens.
-s/teeun/shun/g; # this actually has the effect of changing "tion" to "shun".
+s/tiun/shun/g; # this actually has the effect of changing "tion" to "shun".
s/the/zee/g;
s/The/Zee/g;
tr/vVwW/fFvV/;
s/eoo/oo/g; # this actually has the effect of changing "au" to "oo".
s/Eoo/Oo/g; # this actually has the effect of changing "Au" to "Oo".
-# Change "ow" at end of word to "oo".
-s/uv\b/oo\b/g;
+# Change "ow" to "oo".
+s/uv/oo/g;
# Change 'i' to 'ee', but not at the beginning of a word,
# and only affect the first 'i' in each word.
projects / filters.git / commitdiff