default_new.pl

来自「PERL语言资料 可以用于PERL程序设计」· PL 代码 · 共 72 行

#!/usr/bin/perl
# default.pl
# Default page for XML forums

use warnings;
use strict;
use CGI qw( :standard );
use XML::Parser;
use Fcntl qw( :flock );

my ( $parser, $prefix, @files, @forums, @items );

open  XML, "../htdocs/XML/forums.xml" or die "Could not open: $!";
flock XML, LOCK_SH;
$parser = new XML::Parser( Handlers => { Start => \&startTag,
                                         Char  => \&text      } );
$parser->parse( \*XML );

print header, start_html( -title => "Deitel Message Forums", 
                          -style => { -src => "../XML/site.css" } );

print h1( "Deitel Message Forums" );

if ( $ENV{ "HTTP_USER_AGENT" } =~ /MSIE/i ) {
   $prefix = "../XML/";
} 
else {
   $prefix = "forum.pl?file=";
}

@items = map { a( { -href => "$prefix$files[ $_ ]" }, $forums[ $_ ] ) }
             ( 0 .. $#files );

print p( strong( "Avaliable Forums" ), ul( li( \@items ) ) );

@items = ( a( { -href => "addForum.pl" }, "Add a Forum" ),
           "Modify a Forum",
           "Delete a Forum" );

print p( strong( "Forum Management" ), ul( li( \@items ) ) ), 
      end_html;
close XML;

sub startTag
{
   my ( $expat, $element, %attributes ) = @_;
   push( @files, $attributes{ "filename" } ) if $element eq "forum";
}

sub text
{
   my ( $expat, $string ) = @_;
   push( @forums, $string ) if $expat->in_element( "name" );
}


###########################################################################
#  (C) Copyright 2001 by Deitel & Associates, Inc. and Prentice Hall.     #
#  All Rights Reserved.                                                   #
#                                                                         #
#  DISCLAIMER: The authors and publisher of this book have used their     #
#  best efforts in preparing the book. These efforts include the          #
#  development, research, and testing of the theories and programs        #
#  to determine their effectiveness. The authors and publisher make       #
#  no warranty of any kind, expressed or implied, with regard to these    #
#  programs or to the documentation contained in these books. The authors #
#  and publisher shall not be liable in any event for incidental or       #
#  consequential damages in connection with, or arising out of, the       #
#  furnishing, performance, or use of these programs.                     #
###########################################################################