Old lady swallowed a fly
Present a program which emits the lyrics to the song I Knew an Old Lady Who Swallowed a Fly, taking advantage of the repetitive structure of the song's lyrics.
ALGOL 68
Using Logic
<lang algol68>#!/usr/local/bin/a68g --script #
STRING
sw="swallow",swd=sw+"ed", tsa=". To "+sw+" a ";
INT count prev := 0; [9]STRING prev;
PROC vs = (STRING wot,[]STRING co)VOID: (
printf(($g$,"I know an old lady who ",swd," a ",wot,".",$l$));
IF UPB co = 1 THEN
printf(($gl$,co))
ELIF UPB co > 1 THEN
printf(($g$,co,wot+".",$l$))
FI;
IF count prev NE UPB prev THEN
prev[count prev+:=1]:=wot;
FOR i FROM count prev BY -1 TO 2 DO
printf(($gl$,"She "+swd+" the "+prev[i]+" to catch the "+prev[i-1]+"."))
OD;
printf(($gl$,"I don't know why she "+swd+" the fly.",
"Perhaps she'll die.", $l$))
FI
);
vs("fly",()); vs("spider","That wriggled and jiggled and tickled inside her."); vs("Bird",("Quite absurd",tsa)); vs("Cat",("Fancy that",tsa)); vs("Dog",("What a hog",tsa)); vs("Pig",("Her mouth was so big",tsa)); vs("Goat",("She just opened her throat",tsa)); vs("Cow",("I don't know how",tsa)); vs("Donkey",("It was rather wonky",tsa)); vs("Horse","She's dead, of course!")</lang>
Using a dictionary
<lang algol68>#!/usr/local/bin/a68g --script #
STRING a="WBXAY",b="WCXBY",c="WDXCY",d="WEXDY",
e="WFXEY",f="WGXFY",g="WHXGY",h="WIXHY",
k="K",z="Z",l="";
[]STRING
w=( # Assuming ASCII ordering # "fly","spider","Bird","Cat","Dog","Pig","Goat","Cow","Donkey","Horse",
"I don't know why she swallowed the fly.", "That wriggled and jiggled and tickled inside her.", "Quite absurd","Fancy that","What a hog", "Her mouth was so big","She just opened her throat", "I don't know how","It was rather wonky", "She's dead, of course!",
"I know an old lady who swallowed a ", ". To swallow a ", "She swallowed the "," to catch the ",".", "Perhaps she'll die."), v=( "UAY",k,z,l, "UBY","L",a,k,z,l, "UCY","MVCY",b,a,k,z,l, "UDY","NVDY",c,b,a,k,z,l, "UEY","OVEY",d,c,b,a,k,z,l, "UFY","PVFY",e,d,c,b,a,k,z,l, "UGY","QVGY",f,e,d,c,b,a,k,z,l, "UHY","RVHY",g,f,e,d,c,b,a,k,z,l, "UIY","SVIY",h,g,f,e,d,c,b,a,k,z,l, "UJY","T");
FOR i TO UPB v DO
FOR j TO UPB v[i] DO print(w[ABS v[i][j] - ABS "A" + 1]) OD; print(new line)
OD</lang>
C
Boring, ad hoc dictionary based decompression. The encoder was arguably more interesting, though. Output is different from listing in talk page in punctuations and capitalizations. <lang c>#include <stdio.h>
char *dict[] = { "_ha _c _e _p,/Quite absurd_f_p;_`cat,/Fancy that_fcat;_j`dog,/What a hog" "_fdog;_l`pig,/Her mouth_qso big_fpig;_d_r,/She just opened her throat_f_" "r;_icow,/_mhow she_ga cow;_k_o,/It_qrather wonky_f_o;_a_o_bcow,_khorse.." "./She's dead, of course!/","_a_p_b_e ","/S_t "," to catch the ","fly,/Bu" "t _mwhy s_t fly,/Perhaps she'll die!//_ha","_apig_bdog,_l`","spider,/Tha" "t wr_nj_ntickled inside her;_aspider_b_c",", to_s a ","_sed ","There_qan" " old lady who_g","_a_r_bpig,_d","_acat_b_p,_","_acow_b_r,_i","_adog_bcat" ",_j","I don't know ","iggled and ","donkey","bird"," was ","goat"," swal" "low","he_gthe" };
int print(char *c, int s) { do { if (s) s = print(dict[*c - 95], 0); else if (*c == '_') s = 1; else putchar(*c == '/' ? '\n' : *c); } while (*++c); return s; }
int main() { print(dict[0], 0); return 0; }</lang>
D
<lang d>import std.stdio;
auto dict = [ "_ha _c _e _p,/Quite absurd_f_p;_`cat,/Fancy that_fcat;_j`dog,/What a hog"~ "_fdog;_l`pig,/Her mouth_qso big_fpig;_d_r,/She just opened her throat_f_"~ "r;_icow,/_mhow she_ga cow;_k_o,/It_qrather wonky_f_o;_a_o_bcow,_khorse.."~ "./She's dead, of course!/","_a_p_b_e ","/S_t "," to catch the ","fly,/Bu"~ "t _mwhy s_t fly,/Perhaps she'll die!//_ha","_apig_bdog,_l`","spider,/Tha"~ "t wr_nj_ntickled inside her;_aspider_b_c",", to_s a ","_sed ","There_qan"~ " old lady who_g","_a_r_bpig,_d","_acat_b_p,_","_acow_b_r,_i","_adog_bcat"~ ",_j","I don't know ","iggled and ","donkey","bird"," was ","goat"," swal"~ "low","he_gthe"];
bool oldLady(string part, bool s) {
foreach (ch; part) {
if (s)
s = oldLady(dict[ch - 95], 0);
else if (ch == '_')
s = true;
else
putchar(ch == '/' ? '\n' : ch);
}
return s;
}
void main() {
oldLady(dict[0], false);
}</lang>
Forth
swallow-addr is obviously a good candidate for an object, but Forth has many OO candidates - we won't settle that argument here.
<lang forth>: string, ( c-addr u -- ) \ store string at HERE , with a count
dup c, here swap dup allot move ;
\ doubly linked list: (0|prev, 0|next, aside?, cstr animal; cstr aside) \ aside? is true if the aside is always displayed. variable swallowed variable first
- >next ( swallow-addr -- swallow-addr' )
cell+ @ ;
- >aside? ( swallow-addr -- f )
2 cells + @ ;
- >animal ( swallow-addr -- c-addr u )
3 cells + count ;
- >aside ( swallow-addr -- c-addr u )
>animal + count ;
- swallow ( "animal" -- )
align swallowed @ if here swallowed @ cell+ ! else here first ! then here swallowed @ , swallowed ! 0 , 0 , parse-word string, ; \ data structure still needs the aside
- always ( -- ) \ set aside? of last-defined swallow to true
swallowed @ 2 cells + on ;
- aside ( "aside" -- )
0 parse string, ;
swallow fly always aside But I don't know why she swallowed the fly, swallow spider always aside That wriggled and jiggled and tickled inside her; swallow bird aside Quite absurd, she swallowed the bird; swallow cat aside Fancy that, she swallowed the cat; swallow dog aside What a hog, she swallowed the dog; swallow pig aside Her mouth was so big, she swallowed the pig; swallow goat aside She just opened her throat, she swallowed the goat; swallow cow aside I don't know how, she swallowed the cow; swallow donkey aside It was rather wonky, she swallowed the donkey;
- ?aside ( swallow-addr -- ) \ print aside if aside? is true
dup >aside? if >aside cr type else drop then ;
- reasons ( swallow-addr -- ) \ print reasons she swallowed something
begin dup @ while dup cr ." She swallowed the " >animal type ." to catch the " @ dup >animal type ." ," dup ?aside repeat drop ;
- verse ( swallow-addr -- )
cr ." There was an old lady who swallowed a " dup >animal type ." ," dup >aside cr type reasons cr ." Perhaps she'll die!" ;
- song ( -- )
first @ begin dup verse cr >next dup 0= until drop cr ." There was an old lady who swallowed a horse..." cr ." She's dead, of course!" ;</lang>
Icon and Unicon
This version isn't as compressed as some of the others but it is very straightforward to modify. Just add a new long and terse verse entry and amend the line marked order. This uses a feature of Icon/Unicon that allows procedures to be called with a list datatype instead of an argument list, so we just pre-build argument lists for printf.
<lang Icon>procedure main() #: There Was An Old Lady Lyrics
verse := table() # arglists for printf - [1] long asides and [2] terse joiners verse["bird"] := [["%s,\nQuite absurd, %s %s;\n",1,2,1],["%s,\n",1]] verse["cat"] := [["%s,\nFancy that, %s %s;\n",1,2,1],["%s,\n",1]] verse["dog"] := [["%s,\nWhat a hog, %s %s;\n",1,2,1],["%s,\n",1]] verse["pig"] := [["%s,\nHer mouth was so big, %s %s;\n",1,2,1],["%s,\n",1]] verse["goat"] := [["%s,\nShe just opened her throat, %s %s;\n",1,2,1],["%s,\n",1]] verse["cow"] := [["%s,\nI don't know how, %s %s;\n",1,2,1],["%s,\n",1]] verse["donkey"] := [["%s,\nIt was rather wonky, %s %s;\n",1,2,1],["%s,\n",1]]
# just long versions of these
verse["fly"] := "%s,\nBut I don't know why %s %s,\nPerhaps she'll die!\n\n",1,2,1 verse["spider"] := "%s,\nThat wriggled and jiggled and tickled inside her;\n",1 verse["horse"] := "%s...\nShe's dead, of course!\n",1
every (f := verse[k := key(verse)][1|2])[i := 1 to *f] do # fix every printf args
f[i] := case f[i] of { 1 : k ; 2 : "she swallowed the"; default : f[i]}
zoofilo := [] "fly,spider,bird,cat,dog,pig,goat,cow,donkey,horse," ? # order
while push(zoofilo,tab(find(","))) & move(1) do {
printf("There was an old lady who swallowed a ")
every critter := !zoofilo do {
printf!verse[critter,(critter == (zoofilo[1] | "spider" | "fly"),1)|2]
if critter == "horse" then stop() # dead
printf("She swallowed the %s to catch the ","fly" ~== critter)
}
}
end
link printf</lang>
Sample output omitted.
printf.icn provides printf formatting
J
This defines T to be the required text.
<lang j>T=: e=:3 :'T=:T,y,LF' E=:e@,&'.' O=:'I know an old lady who swallowed a 'E@,] I=:e bind('I dont know why she swallowed the fly.',LF,'Perhaps shell die.',LF) I O 'fly' O P=:'spider' E 'That wriggled and jiggled and tickled inside her' I E A=:'She swallowed the spider to catch the fly' N=:4 :0
O x E y,'. To swallow a ',x I E A=:'She swallowed the ',x,' to catch the ',P,'.',LF,A P=:x
) 'Bird'N'Quite absurd' 'Cat'N'Fancy that' 'Dog'N'What a hog' 'Pig'N'Her mouth was so big' 'Goat'N'She just opened her throat' 'Cow'N'I dont know how' 'Donkey'N'It was rather wonky' O'Horse' e'Shes dead, of course!'</lang>
Perl
<lang perl>open O, '|-', "uudecode | bunzip2"; print O ; close O;
__DATA__ begin-base64 644 - QlpoOTFBWSZTWUSbX/0AAZRfgAAQYIUACBFgbIA//96gQAK9oAAAxhMTQYIx DIwmDEoAAAAAAxhMTQYIxDIwmBSkiNIaJtCCAzJPU1G4ueVmGZMsMzBz0N5v hr4j29SRSSCZgyv8BDAAdOE3oFIFIhMAQMtm2Zy/MbRs9U1pgzCzGcaGnTYN u5NJ+/D4TfkcZZ39PmNJuN8rxjMrJTfvr8rFkxmTDMGFjDLBleGh3L8zlhuO 9vcq6rom3TonOONxyJ1TlG3dz2Tu3xZNtzTLgZu21y1r0dOW/HLntrgdi9ow hlHTsnRVbJ98DxjYs/K87Q1rJjWazCO7kHbIXUj9DS7dSMHVNSmhwrjHMc8D INk476V5jJDmnOPXZM38aeAd+DUp/39ccxmDEf3H7u30Rk6zDLGZkPYNq9CP Pzj39xsVe+KeupMjKsjONsG6dk1bajByHYPOMHxneP2Og3q+dR9ryGk19o0n onYPUfEfhVc1V+kcbJwmQ/nRwn3Hp6pP4TqvTO/2TfNJkvrrbt8+a9N92oy2 FeXUOI8486Wvor1zajqPDfpwnrn2jOzvo8hkOPrpVajlwnjqPfIry5c0TbKL 559fx8xqpsquRaFYV9I9fT6p7RrI/Gv/F3JFOFCQRJtf/Q== ====</lang>
PHP
<lang php><?php
$swallowed = array(
array('swallowed' => 'fly.',
'reason' => "I don't know why she swallowed the fly."),
array('swallowed' => 'spider,',
'aside' => "which wiggled and jiggled and tickled inside her.",
'reason' => "She swallowed the spider to catch the fly"),
array('swallowed' => 'bird.',
'aside' => "How absurd! To swallow a bird!",
'reason' => "She swallowed the bird to catch the spider,"),
array('swallowed' => 'cat.',
'aside' => "Imagine that! To swallow a cat!",
'reason' => "She swallowed the cat to catch the bird."),
array('swallowed' => 'dog.',
'aside' => "What a hog! To swallow a dog!",
'reason' => "She swallowed the dog to catch the cat."),
array('swallowed' => 'horse',
'aside' => "She's dead, of course. She swallowed a horse!",
'reason' => "She swallowed the horse to catch the dog."));
foreach($swallowed as $creature) {
print "I knew an old lady who swallowed a " . $creature['swallowed'] . "\n";
if(array_key_exists('aside', $creature))
print $creature['aside'] . "\n";
$reversed = array_reverse($swallowed); $history = array_slice($reversed, array_search($creature, $reversed));
foreach($history as $note)
{
print $note['reason'] . "\n";
}
if($swallowed[count($swallowed) - 1] == $creature) print "But she sure died!\n"; else print "Perhaps she'll die." . "\n\n";
}</lang>
Tcl
Because the song is highly repetitive, it compresses wonderfully. <lang tcl>package require Tcl 8.6
puts [zlib inflate [binary decode base64 "
7VRNa8MwDL3nV2inXkZ+xDa29taxws5q7NZuPSvYDib/fnJKPxwXBoNCx3KTn56t p6dEC9hbioAWyAgwKHqIisBHNIaiFICwMX1dLUCQnYUDO6oevJIXrMCngbeUTmHr U3pmDAgt64ov/1jEt1pIV1crhQGi09utSbgVsLuIg272KdbWMx1UuvFRCDm8BYGg wdCos7hbN/Gknair904HCbj2HZ9gdaKcCKXihOd6j37cUXfPGOrqFW3T81sc560N 2VItw7nUP23BC23r6jN9ogiK49yCIVuqZTiX+i+sWmo2Y86lv6gLCiLyEwRrPTZt 4JW6Gc5FT+ZemPtGxy53nQ9ArbSMq6RFOSr+zTM915DwXP00jd8sRoqjIoqR0XpM nCtGcDITPI3qxgvc7mWqE4aN5DCknyYy2hfL/MC85lzKjMybxnsP452T83JQNPMg JIpHoA001DH88A0=
"]]</lang>