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CGI equivalent of Station Name / anagram program
Programming Principles example from a Well House Consultants training course
More on Programming Principles [link]
Source code: algo_cgi.pl Module: Q101
#!/usr/bin/env perl
# sub wordsort { my ($incoming,$sep) = @_; @nlet = sort(map(lc,split(/\s*/,$incoming))); join($sep,@nlet); } print <<"TOP" Content-type: text/html <html><head> <title>Station name anagrams</title> </head><body> <b>This page looks for all the station names in the UK that contain the letters that you have entered (and enough of them to make up the word in the style of a Scrabble set too!</b><br /><br /> TOP ; open (FH,"/home/httpd/vhosts/firstgreatwestern.info/httpdocs/smr/tools/stationtables.tsv"); @about = <FH>; for (@about) { ($name) = (split(/\t/))[1]; $nk = wordsort($name,""); $table{$name} = $nk; } my ($k,$v) = ($ENV{QUERY_STRING} =~ /(.*)=(.*)/); if ($v =~ /^\w+$/) { $regex = wordsort($v,".*"); print "You entered <b>$v</b> ... what can we find?<br />"; $mat = $fmat = 0; for (sort keys(%table)) { if ($table{$_} =~ /$regex/) { print "$_ - $table{$_}<br />"; $mat++; } else { $fmat++; } } print "<br>Matched $mat and didn't match $fmat<br />"; } else { print "If you enter just letters, you'll be given all British station names that 'contain' those letters<br />"; print "<b>Please enter ONLY letters</b><br />" if ($v =~ /\S/); } print <<"TAIL" <hr> <form>Input a word you want to look for <input name=fred> <input type=submit></form> <hr> This program was written by <a href=http://www.wellho.net>Well House Consultants</a> who will be happy to provide you with training on Perl (in which this is written), or PHP, Python, Java, Lua, Tcl ... and uses data we have on the <a href=http://www.firstgreatwestern.info>First Great Western Information Site</a>, home of the famous <a href=http://www.firstgreatwestern.info/coffeeshop>Coffee Shop</a>. </body></html> TAIL ; Learn about this subject
This module and example are covered on the following public courses:
* Learning to program in PHP * Learning to program in Python * Learning to Program in Java * Learning to program in Lua * Learning to program in Ruby * Learning to program in Tcl * Learning to Program in C * Learning to program in C and C++ * Learning to program in Perl * Learning to program in PHP * Learning to program in C and C++ Also available on on site courses for larger groups Books covering this topic
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