britney has asked for the wisdom of the Perl Monks concerning the following question:

Hi all,
I am learning perl , I just wonder if I have a flat file.

record.txt 

Toyota|California||||| 
Toyota|California||||| 
Toyota|Arizona||||| 
Toyota|Nevada||||| 
Toyota|Florida||||| 
Honda|California||||| 
Honda|Florida||||| 
Honda|Arizona|||||

[download]
How we write a code to have a result is: 
MADE    CALIFORINA  ARIZONA  NEVADA   FLORIDA   TOTAL 
====    ==========  =======  ======   =======   ===== 
Toyota      2          1       1         1        5 
Honda       1          1       0         1        3

[download]
I can only do: 
MADE     TOTAL 
====     ===== 
Toyota     5 
Honda      3

[download]
Here are some of my code: 
#!/opt/WWW/tools/perl5/perl  
#summarize.cgi 
                                        
open (DATA,"record.txt") || die ("Can't Open data File \n"); 
@data=<DATA>; 
close DATA; 
                                        
foreach $line (@data) { 
    ($made, $state, $tmp , $tmp, $tmp,  $tmp)=split(/\|/,$line);

    if ($made) { 
        $count{$made}++; 
    }

    if ($state) { 
        $countstate{$state}++; 
    }
}

&header_response; 

$x=0; 
foreach $made (keys %count) {
    $x++; 
   print "<TR ><TD>$x</TD><TD><b>$made&nbsp;</b></TD><TD>$count{$made}
+&nbsp;</TD></TR> \n";
} 
&close_response; 

&log_response; 
$z=0; 
foreach $LogOp (keys %countstate) { 
    $z++; 

    print "<TR ><TD>$z</TD><TD><b>$state&nbsp;</b></TD><TD>$countstate
+{$state}&nbsp;</TD></TR> \n"; 

} 

&footer_response;

[download]
Can you help me to solve this problem ?

Thank you very much

Edit by dws to rescue formatting

Replies are listed 'Best First'.
Re: Need help , newbie cgi
by kabel (Chaplain) on Sep 13, 2002 at 07:29 UTC
    the problem arises NOT from the fact that you consider yourself a "cgi newbie". your data structure is too flat :) i used a HoH for that. the first hash is "entered" with the name and returns another hash which is "entered" by the state. 
    use strict;
use warnings;
use diagnostics;

my $file = "c:\\test.data";
my ($type, $state);
my %data;
my %states;

open (FH, $file) or die "[$file]:[$!]";
while (<FH>) {
    ($type, $state) = split (/\|/, $_);
    if ((defined $type) and (defined $state)) {
        $type =~ s/^\s*//; $type =~ s/\s*$//;
        $state =~ s/^\s*//; $state =~ s/\s*$//;

        $data{$type}->{$state} ++;
        $states{$state} = 1;
    }
}
close (FH);

print qq~<table border="1">\n~;
print_header (\%states);
print_data (\%data, \%states);
print "</table>\n";


############################################################
sub print_data {
############################################################
    my ($data_ref, $states_ref) = @_;
    
    foreach my $type (keys %$data_ref) {
        my $total_for_this_type = 0;

        print "<tr>\n";
        print "\t<td>$type</td>\n";
        foreach my $state (keys %$states_ref) {
            $data_ref->{$type}->{$state} or $data_ref->{$type}->{$stat
+e} = 0;
            print "\t<td>", $data_ref->{$type}->{$state}, "</td>\n";
            $total_for_this_type += $data_ref->{$type}->{$state};
        }
        print "\t<td>$total_for_this_type</td>\n";
        print "</tr>\n";
    }
}

############################################################
sub print_header {
############################################################
    my ($states_ref) = @_;

    print "<tr>\n";
    print "\t<td>MADE</td>\n";
    foreach (keys %$states_ref) {
        print "\t<td>$_</td>\n";
    }
    print "\t<td>TOTAL</td>\n";
    print "</tr>\n";

    print "<tr>\n";
    print "\t<td>====</td>\n";
    foreach (keys %$states_ref) {
        print "\t<td>", "=" x length ($_), "</td>\n";
    }
    print "\t<td>=====</td>\n";
    print "</tr>\n";
}

    [download]
    this code can surely be improved (the whole print stuff, %states is not beautiful etc). i just wanted to provide a starting point for you. perl scripts like that (first process data, then print it out) "live" from their datastructure.
[reply]
[d/l]
      Hi Kabel, Thank for your help, can you show me how to make it appear on the web ? I can make it run, but can not show on web. Thanks again.
[reply]
        try this code: 
        use strict;
use warnings;
use CGI;

my $cgi = CGI::->new ();

print $cgi->header ();
print $cgi->start_html ();

#
# whatever you want, do it here ;)
#
print $cgi->h1 ("hello, world!");
print $cgi->hr ();

print $cgi->end_html ();

        [download]
        instead of the two print statements, put in the code from my first posting. then copy the resulting script inside the /cgi-bin directory in your document root and try get it from a browser. enjoy!
[reply]
[d/l]
      Hi Kabel, I works great, but I still stuck one more thing. How can I sort it by State when it display ? Do you think we can do it ? Thanks
[reply]

        replace

        foreach my $state (keys %$states_ref) {

by 

foreach my $state (sort keys %$states_ref) {

        [download]
[reply]
[d/l]

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