Merge pull request #1419 from xexyl/huffman96
This commit is contained in:
2 files changed
+39
-8
No files matched your search
+31
-1
@@ -1,7 +1,37 @@
|
||||
#!/usr/bin/env bash
|
||||
#
|
||||
# try.sh - show IOCCC winner 1996/huffman
|
||||
#
|
||||
# ...
|
||||
#
|
||||
# So, that's to end the story for you and me
|
||||
# If you still give a listen, you just may
|
||||
# Hear a big wolf-man or little piggy say
|
||||
# Little pig, little pig, let me in
|
||||
# Not by the hair of my chinny, chin, chin
|
||||
# Little pig, little pig, let me in
|
||||
# Not by the hair of my chinny, chin, chin
|
||||
# Well, I'm huffin', I'm puffin', I'll blow your house in
|
||||
# Huffin', puffin', blow your house in
|
||||
# Huffin', puffin', blow your house in
|
||||
# Huffin' and a puffin' and I'll blow your house in!
|
||||
# And the moral of the story is
|
||||
# band with no talent can easily amuse
|
||||
# Idiots with a stupid, puppet show
|
||||
#
|
||||
# :-)
|
||||
|
||||
make all >/dev/null || exit 1
|
||||
# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
|
||||
# this way allows us to have the user specify a different compiler in an easy
|
||||
# way.
|
||||
if [[ -z "$CC" ]]; then
|
||||
CC="cc"
|
||||
fi
|
||||
|
||||
make CC="$CC" all >/dev/null || exit 1
|
||||
|
||||
# clear screen after compilation so that only the entry is shown
|
||||
clear
|
||||
|
||||
echo "$ echo 'seeing or feeling is believing' | ./huffman" 1>&2
|
||||
echo 'seeing or feeling is believing' | ./huffman 2>/dev/null
|
||||
|
||||
@@ -8,7 +8,7 @@ make
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
./schneiderwent datafile
|
||||
./schneiderwent
|
||||
```
|
||||
|
||||
|
||||
@@ -57,20 +57,21 @@ deficiency.
|
||||
|
||||
Obfuscation in this entry consists of:
|
||||
|
||||
* `printf()`ing console messages stored as EBCDIC character values - this is not
|
||||
* `printf(3)`ing console messages stored as
|
||||
[EBCDIC](https://en.wikipedia.org/wiki/EBCDIC) character values - this is not
|
||||
an attempt at encryption, but rather at cross platform compatibility.
|
||||
* ASCII character values are calculated from the EBCDIC in a particularly ugly
|
||||
abuse of the '?' operator.
|
||||
* [ASCII](https://en.wikipedia.org/wiki/ASCII) character values are calculated
|
||||
from the EBCDIC in a particularly ugly abuse of the `?:` operator.
|
||||
* Detection of whether to print the ASCII or EBCDIC values is done by taking the
|
||||
remainder of dividing the character `'J'` by `2` - the ASCII value of the
|
||||
character is even, the EBCDIC value is odd.
|
||||
* The messages to be `printf`ed are determined via multiple table lookups and
|
||||
* The messages to be `printf(3)`ed are determined via multiple table lookups and
|
||||
bit-masked values.
|
||||
* For minutes, the bit position turned on is multiplied by two to determine the
|
||||
message to be `printf`ed.
|
||||
message to be `printf(3)`ed.
|
||||
* For hours, the straight bit position is used.
|
||||
* This entry mostly eschews function calls for the often overlooked
|
||||
setjmp/longjmp combination.
|
||||
`setjmp(3)`/`longjmp(3)` combination.
|
||||
* The trigraphs are not there as obfuscation nor are they there to annoy the
|
||||
judges - it's just the easiest way to get around the absence of square brackets
|
||||
in a normal 3270 environment.
|
||||
|
||||
Reference in new issue
Block a user