-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, along with many,
+many more.
-http://www.princeton.edu/~mkporwit/pub_links/davido/slang/
+http://joeyh.name/code/filters
-http://www.mathlab.sunysb.edu/~elijah/src.html
+Since the original versions of some 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.
-Collected by Joey Hess <joey@kite.ml.org>
+Here are the results of my investigations of how the filters work:
+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.
-Note that the Makefile will get the filters to compile on Linux systems.
-Otherwise, you're on your own.
+fudd:
+ This one is trivial too. A few transpositions happen differently if
+ the letter is at the end of the word or not, and I think I found
+ all the transpositions with only a few paragraphs of sample output.
+ The only weird thing is that 'n.' is changed to "n, uh-hah-hah-hah."
+ (Works well with sentances ending in "gun." ..)
-Descriptions of the filters:
+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.
-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.
+ The word "bork" is never changed, no matter what any of these
+ rules may say. Neither is "Bork".
-No racial or societal slurs are intended. For amusement only.
+ 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
+
+ These happen to letters that are not the last letter of a word:
+ a -> e
+ A -> e
+
+ 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
+
+ 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.
+
+Collected and written by Joey Hess <id@joeyh.name>
projects / filters.git / blobdiff