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|
#!/usr/bin/perl -w
#
# $Revision: 1.1.1.1 $
#
# $Date: 2003/07/27 11:07:11 $
package Elinfo;
sub new {
bless { COUNT => 0,
MINLEV => undef,
SEEN => 0,
CHARS => 0,
EMPTY => 1,
PTAB => {},
KTAB => {},
ATAB => {} }, shift;
}
package main;
use English;
use XML::Parser;
my %elements;
my $seen = 0;
my $root;
my $file = shift;
my $subform =
' @<<<<<<<<<<<<<<< @>>>>';
die "Can't find file \"$file\""
unless -f $file;
my $parser = new XML::Parser(ErrorContext => 2);
$parser->setHandlers(Start => \&start_handler,
Char => \&char_handler);
$parser->parsefile($file);
set_minlev($root, 0);
my $el;
foreach $el (sort bystruct keys %elements)
{
my $ref = $elements{$el};
print "\n================\n$el: ", $ref->{COUNT}, "\n";
print "Had ", $ref->{CHARS}, " bytes of character data\n"
if $ref->{CHARS};
print "Always empty\n"
if $ref->{EMPTY};
showtab('Parents', $ref->{PTAB}, 0);
showtab('Children', $ref->{KTAB}, 1);
showtab('Attributes', $ref->{ATAB}, 0);
}
################
## End of main
################
sub start_handler
{
my $p = shift;
my $el = shift;
my $elinf = $elements{$el};
if (not defined($elinf))
{
$elements{$el} = $elinf = new Elinfo;
$elinf->{SEEN} = $seen++;
}
$elinf->{COUNT}++;
my $partab = $elinf->{PTAB};
my $parent = $p->current_element;
if (defined($parent))
{
$partab->{$parent}++;
my $pinf = $elements{$parent};
# Increment our slot in parent's child table
$pinf->{KTAB}->{$el}++;
$pinf->{EMPTY} = 0;
}
else
{
$root = $el;
}
# Deal with attributes
my $atab = $elinf->{ATAB};
while (@_)
{
my $att = shift;
$atab->{$att}++;
shift; # Throw away value
}
} # End start_handler
sub char_handler
{
my ($p, $data) = @_;
my $inf = $elements{$p->current_element};
$inf->{EMPTY} = 0;
if ($data =~ /\S/)
{
$inf->{CHARS} += length($data);
}
} # End char_handler
sub set_minlev
{
my ($el, $lev) = @_;
my $elinfo = $elements{$el};
if (! defined($elinfo->{MINLEV}) or $elinfo->{MINLEV} > $lev)
{
my $newlev = $lev + 1;
$elinfo->{MINLEV} = $lev;
foreach (keys %{$elinfo->{KTAB}})
{
set_minlev($_, $newlev);
}
}
} # End set_minlev
sub bystruct
{
my $refa = $elements{$a};
my $refb = $elements{$b};
$refa->{MINLEV} <=> $refb->{MINLEV}
or $refa->{SEEN} <=> $refb->{SEEN};
} # End bystruct
sub showtab
{
my ($title, $table, $dosum) = @_;
my @list = sort keys %{$table};
if (@list)
{
print "\n $title:\n";
my $item;
my $sum = 0;
foreach $item (@list)
{
my $cnt = $table->{$item};
$sum += $cnt;
formline($subform, $item, $cnt);
print $ACCUMULATOR, "\n";
$ACCUMULATOR = '';
}
if ($dosum and @list > 1)
{
print " =====\n";
formline($subform, '', $sum);
print $ACCUMULATOR, "\n";
$ACCUMULATOR = '';
}
}
} # End showtab
# Tell Emacs that this is really a perl script
# Local Variables:
# mode:perl
# End:
|
