From jacobson@math-cs.cns.uni.edu Tue Jul 16 17:09:42 2002
Date: Mon, 15 Jul 2002 16:25:24 -0500 (CDT)
From: Mark Jacobson <jacobson@math-cs.cns.uni.edu>
To: 810-088-06@uni.edu
Subject: Making the external java file with HTML in it....

Try out these FOUR lines of PERL code.  They illustrate the
substitution operator
                      =~ s/toFind/toReplaceWith/GlobalOption

     used to g as in globally find all occurrences of " in the
     data and replace them with \" (the two characters backslash and
                                                       double quote).

$string = "This is a string containing \"Double Quotes\" for now.";

print "\n$string\n";

$string =~ s/"/\\"/g;

print "\n$string\n";

FOR A SIMPLER EXAMPLE, TRY THIS ONE.

perl -e '$str="Hello Molly and Sally"; $str =~ s/l/WW/g; print "$str\n";'

HeWWWWo MoWWWWy and SaWWWWy       <---- OUTPUT with l's replaced by WW

-------- makeJavaScript.pl -------------------------------------------

open (FILE, "writeToForm.html");

open (OUTFILE, ">testing.js");

$doubleQuote = "\"";

while (<FILE>)
{
   chomp;
   $_ =~ s/"/\\"/g;
   $_ = "$doubleQuote $_ \\n$doubleQuote +\n";
   print OUTFILE $_;
}

close FILE;
close OUTFILE;
---------------------------------------------------------------------------

I will show the output in the hands-on class on Tuesday.

If you want to see what the funny results of the JavaScript
are so far, check out the URL:

      http://www.cns.uni.edu/~jacobson/js/writeToForm.html

and click the 2nd button first, then click either button as many
times as you wish.  You will see repeated pages.

Mark