444 lines
12 KiB
Perl
444 lines
12 KiB
Perl
require 5.002; # For (defined ref)
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package dumpvar;
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# Needed for PrettyPrinter only:
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# require 5.001; # Well, it coredumps anyway undef DB in 5.000 (not now)
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# translate control chars to ^X - Randal Schwartz
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# Modifications to print types by Peter Gordon v1.0
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# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
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# Won't dump symbol tables and contents of debugged files by default
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$winsize = 80 unless defined $winsize;
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# Defaults
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# $globPrint = 1;
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$printUndef = 1 unless defined $printUndef;
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$tick = "auto" unless defined $tick;
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$unctrl = 'quote' unless defined $unctrl;
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$subdump = 1;
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$dumpReused = 0 unless defined $dumpReused;
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$bareStringify = 1 unless defined $bareStringify;
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sub main::dumpValue {
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local %address;
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local $^W=0;
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(print "undef\n"), return unless defined $_[0];
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(print &stringify($_[0]), "\n"), return unless ref $_[0];
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dumpvar::unwrap($_[0],0);
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}
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# This one is good for variable names:
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sub unctrl {
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local($_) = @_;
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local($v) ;
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return \$_ if ref \$_ eq "GLOB";
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s/([\001-\037\177])/'^'.pack('c',ord($1)^64)/eg;
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$_;
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}
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sub stringify {
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local($_,$noticks) = @_;
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local($v) ;
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my $tick = $tick;
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return 'undef' unless defined $_ or not $printUndef;
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return $_ . "" if ref \$_ eq 'GLOB';
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$_ = &{'overload::StrVal'}($_)
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if $bareStringify and ref $_
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and %overload:: and defined &{'overload::StrVal'};
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if ($tick eq 'auto') {
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if (/[\000-\011\013-\037\177]/) {
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$tick = '"';
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}else {
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$tick = "'";
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}
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}
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if ($tick eq "'") {
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s/([\'\\])/\\$1/g;
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} elsif ($unctrl eq 'unctrl') {
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s/([\"\\])/\\$1/g ;
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s/([\000-\037\177])/'^'.pack('c',ord($1)^64)/eg;
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s/([\200-\377])/'\\0x'.sprintf('%2X',ord($1))/eg
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if $quoteHighBit;
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} elsif ($unctrl eq 'quote') {
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s/([\"\\\$\@])/\\$1/g if $tick eq '"';
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s/\033/\\e/g;
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s/([\000-\037\177])/'\\c'.chr(ord($1)^64)/eg;
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}
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s/([\200-\377])/'\\'.sprintf('%3o',ord($1))/eg if $quoteHighBit;
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($noticks || /^\d+(\.\d*)?\Z/)
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? $_
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: $tick . $_ . $tick;
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}
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sub ShortArray {
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my $tArrayDepth = $#{$_[0]} ;
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$tArrayDepth = $#{$_[0]} < $arrayDepth-1 ? $#{$_[0]} : $arrayDepth-1
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unless $arrayDepth eq '' ;
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my $shortmore = "";
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$shortmore = " ..." if $tArrayDepth < $#{$_[0]} ;
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if (!grep(ref $_, @{$_[0]})) {
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$short = "0..$#{$_[0]} '" .
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join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
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return $short if length $short <= $compactDump;
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}
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undef;
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}
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sub DumpElem {
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my $short = &stringify($_[0], ref $_[0]);
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if ($veryCompact && ref $_[0]
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&& (ref $_[0] eq 'ARRAY' and !grep(ref $_, @{$_[0]}) )) {
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my $end = "0..$#{$v} '" .
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join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
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} elsif ($veryCompact && ref $_[0]
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&& (ref $_[0] eq 'HASH') and !grep(ref $_, values %{$_[0]})) {
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my $end = 1;
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$short = $sp . "0..$#{$v} '" .
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join("' '", @{$v}[0..$tArrayDepth]) . "'$shortmore";
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} else {
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print "$short\n";
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unwrap($_[0],$_[1]);
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}
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}
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sub unwrap {
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return if $DB::signal;
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local($v) = shift ;
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local($s) = shift ; # extra no of spaces
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local(%v,@v,$sp,$value,$key,@sortKeys,$more,$shortmore,$short) ;
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local($tHashDepth,$tArrayDepth) ;
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$sp = " " x $s ;
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$s += 3 ;
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# Check for reused addresses
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if (ref $v) {
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my $val = $v;
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$val = &{'overload::StrVal'}($v)
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if %overload:: and defined &{'overload::StrVal'};
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($address) = $val =~ /(0x[0-9a-f]+)\)$/ ;
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if (!$dumpReused && defined $address) {
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$address{$address}++ ;
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if ( $address{$address} > 1 ) {
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print "${sp}-> REUSED_ADDRESS\n" ;
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return ;
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}
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}
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} elsif (ref \$v eq 'GLOB') {
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$address = "$v" . ""; # To avoid a bug with globs
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$address{$address}++ ;
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if ( $address{$address} > 1 ) {
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print "${sp}*DUMPED_GLOB*\n" ;
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return ;
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}
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}
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if (ref $v eq 'Regexp') {
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my $re = "$v";
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$re =~ s,/,\\/,g;
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print "$sp-> qr/$re/\n";
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return;
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}
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if ( UNIVERSAL::isa($v, 'HASH') ) {
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@sortKeys = sort keys(%$v) ;
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undef $more ;
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$tHashDepth = $#sortKeys ;
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$tHashDepth = $#sortKeys < $hashDepth-1 ? $#sortKeys : $hashDepth-1
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unless $hashDepth eq '' ;
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$more = "....\n" if $tHashDepth < $#sortKeys ;
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$shortmore = "";
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$shortmore = ", ..." if $tHashDepth < $#sortKeys ;
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$#sortKeys = $tHashDepth ;
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if ($compactDump && !grep(ref $_, values %{$v})) {
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#$short = $sp .
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# (join ', ',
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# Next row core dumps during require from DB on 5.000, even with map {"_"}
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# map {&stringify($_) . " => " . &stringify($v->{$_})}
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# @sortKeys) . "'$shortmore";
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$short = $sp;
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my @keys;
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for (@sortKeys) {
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push @keys, &stringify($_) . " => " . &stringify($v->{$_});
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}
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$short .= join ', ', @keys;
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$short .= $shortmore;
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(print "$short\n"), return if length $short <= $compactDump;
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}
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for $key (@sortKeys) {
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return if $DB::signal;
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$value = $ {$v}{$key} ;
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print "$sp", &stringify($key), " => ";
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DumpElem $value, $s;
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}
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print "$sp empty hash\n" unless @sortKeys;
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print "$sp$more" if defined $more ;
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} elsif ( UNIVERSAL::isa($v, 'ARRAY') ) {
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$tArrayDepth = $#{$v} ;
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undef $more ;
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$tArrayDepth = $#{$v} < $arrayDepth-1 ? $#{$v} : $arrayDepth-1
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unless $arrayDepth eq '' ;
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$more = "....\n" if $tArrayDepth < $#{$v} ;
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$shortmore = "";
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$shortmore = " ..." if $tArrayDepth < $#{$v} ;
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if ($compactDump && !grep(ref $_, @{$v})) {
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if ($#$v >= 0) {
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$short = $sp . "0..$#{$v} " .
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join(" ",
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map {exists $v->[$_] ? stringify $v->[$_] : "empty"} ($[..$tArrayDepth)
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) . "$shortmore";
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} else {
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$short = $sp . "empty array";
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}
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(print "$short\n"), return if length $short <= $compactDump;
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}
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#if ($compactDump && $short = ShortArray($v)) {
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# print "$short\n";
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# return;
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#}
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for $num ($[ .. $tArrayDepth) {
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return if $DB::signal;
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print "$sp$num ";
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if (exists $v->[$num]) {
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DumpElem $v->[$num], $s;
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} else {
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print "empty slot\n";
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}
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}
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print "$sp empty array\n" unless @$v;
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print "$sp$more" if defined $more ;
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} elsif ( UNIVERSAL::isa($v, 'SCALAR') or ref $v eq 'REF' ) {
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print "$sp-> ";
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DumpElem $$v, $s;
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} elsif ( UNIVERSAL::isa($v, 'CODE') ) {
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print "$sp-> ";
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dumpsub (0, $v);
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} elsif ( UNIVERSAL::isa($v, 'GLOB') ) {
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print "$sp-> ",&stringify($$v,1),"\n";
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if ($globPrint) {
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$s += 3;
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dumpglob($s, "{$$v}", $$v, 1);
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} elsif (defined ($fileno = fileno($v))) {
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print( (' ' x ($s+3)) . "FileHandle({$$v}) => fileno($fileno)\n" );
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}
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} elsif (ref \$v eq 'GLOB') {
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if ($globPrint) {
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dumpglob($s, "{$v}", $v, 1) if $globPrint;
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} elsif (defined ($fileno = fileno(\$v))) {
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print( (' ' x $s) . "FileHandle({$v}) => fileno($fileno)\n" );
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}
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}
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}
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sub matchvar {
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$_[0] eq $_[1] or
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($_[1] =~ /^([!~])(.)([\x00-\xff]*)/) and
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($1 eq '!') ^ (eval {($_[2] . "::" . $_[0]) =~ /$2$3/});
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}
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sub compactDump {
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$compactDump = shift if @_;
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$compactDump = 6*80-1 if $compactDump and $compactDump < 2;
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$compactDump;
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}
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sub veryCompact {
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$veryCompact = shift if @_;
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compactDump(1) if !$compactDump and $veryCompact;
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$veryCompact;
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}
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sub unctrlSet {
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if (@_) {
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my $in = shift;
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if ($in eq 'unctrl' or $in eq 'quote') {
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$unctrl = $in;
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} else {
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print "Unknown value for `unctrl'.\n";
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}
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}
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$unctrl;
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}
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sub quote {
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if (@_ and $_[0] eq '"') {
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$tick = '"';
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$unctrl = 'quote';
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} elsif (@_ and $_[0] eq 'auto') {
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$tick = 'auto';
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$unctrl = 'quote';
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} elsif (@_) { # Need to set
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$tick = "'";
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$unctrl = 'unctrl';
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}
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$tick;
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}
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sub dumpglob {
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return if $DB::signal;
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my ($off,$key, $val, $all) = @_;
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local(*entry) = $val;
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my $fileno;
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if (($key !~ /^_</ or $dumpDBFiles) and defined $entry) {
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print( (' ' x $off) . "\$", &unctrl($key), " = " );
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DumpElem $entry, 3+$off;
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}
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if (($key !~ /^_</ or $dumpDBFiles) and @entry) {
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print( (' ' x $off) . "\@$key = (\n" );
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unwrap(\@entry,3+$off) ;
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print( (' ' x $off) . ")\n" );
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}
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if ($key ne "main::" && $key ne "DB::" && %entry
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&& ($dumpPackages or $key !~ /::$/)
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&& ($key !~ /^_</ or $dumpDBFiles)
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&& !($package eq "dumpvar" and $key eq "stab")) {
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print( (' ' x $off) . "\%$key = (\n" );
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unwrap(\%entry,3+$off) ;
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print( (' ' x $off) . ")\n" );
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}
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if (defined ($fileno = fileno(*entry))) {
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print( (' ' x $off) . "FileHandle($key) => fileno($fileno)\n" );
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}
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if ($all) {
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if (defined &entry) {
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dumpsub($off, $key);
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}
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}
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}
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sub CvGV_name_or_bust {
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my $in = shift;
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return if $skipCvGV; # Backdoor to avoid problems if XS broken...
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$in = \&$in; # Hard reference...
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eval {require Devel::Peek; 1} or return;
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my $gv = Devel::Peek::CvGV($in) or return;
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*$gv{PACKAGE} . '::' . *$gv{NAME};
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}
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sub dumpsub {
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my ($off,$sub) = @_;
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my $ini = $sub;
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my $s;
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$sub = $1 if $sub =~ /^\{\*(.*)\}$/;
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my $subref = defined $1 ? \&$sub : \&$ini;
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my $place = $DB::sub{$sub} || (($s = $subs{"$subref"}) && $DB::sub{$s})
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|| (($s = CvGV_name_or_bust($subref)) && $DB::sub{$s})
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|| ($subdump && ($s = findsubs("$subref")) && $DB::sub{$s});
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$place = '???' unless defined $place;
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$s = $sub unless defined $s;
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print( (' ' x $off) . "&$s in $place\n" );
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}
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sub findsubs {
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return undef unless %DB::sub;
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my ($addr, $name, $loc);
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while (($name, $loc) = each %DB::sub) {
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$addr = \&$name;
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$subs{"$addr"} = $name;
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}
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$subdump = 0;
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$subs{ shift() };
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}
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sub main::dumpvar {
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my ($package,@vars) = @_;
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local(%address,$key,$val,$^W);
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$package .= "::" unless $package =~ /::$/;
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*stab = *{"main::"};
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while ($package =~ /(\w+?::)/g){
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*stab = $ {stab}{$1};
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}
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local $TotalStrings = 0;
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local $Strings = 0;
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local $CompleteTotal = 0;
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while (($key,$val) = each(%stab)) {
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return if $DB::signal;
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next if @vars && !grep( matchvar($key, $_), @vars );
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if ($usageOnly) {
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globUsage(\$val, $key)
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if ($package ne 'dumpvar' or $key ne 'stab')
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and ref(\$val) eq 'GLOB';
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} else {
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dumpglob(0,$key, $val);
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}
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}
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if ($usageOnly) {
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print "String space: $TotalStrings bytes in $Strings strings.\n";
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$CompleteTotal += $TotalStrings;
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print "Grand total = $CompleteTotal bytes (1 level deep) + overhead.\n";
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}
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}
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sub scalarUsage {
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my $size = length($_[0]);
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$TotalStrings += $size;
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$Strings++;
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$size;
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}
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sub arrayUsage { # array ref, name
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my $size = 0;
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map {$size += scalarUsage($_)} @{$_[0]};
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my $len = @{$_[0]};
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print "\@$_[1] = $len item", ($len > 1 ? "s" : ""),
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" (data: $size bytes)\n"
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if defined $_[1];
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$CompleteTotal += $size;
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$size;
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}
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sub hashUsage { # hash ref, name
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my @keys = keys %{$_[0]};
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my @values = values %{$_[0]};
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my $keys = arrayUsage \@keys;
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my $values = arrayUsage \@values;
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my $len = @keys;
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my $total = $keys + $values;
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print "\%$_[1] = $len item", ($len > 1 ? "s" : ""),
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" (keys: $keys; values: $values; total: $total bytes)\n"
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if defined $_[1];
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$total;
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}
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sub globUsage { # glob ref, name
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local *name = *{$_[0]};
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$total = 0;
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$total += scalarUsage $name if defined $name;
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$total += arrayUsage \@name, $_[1] if @name;
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$total += hashUsage \%name, $_[1] if %name and $_[1] ne "main::"
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and $_[1] ne "DB::"; #and !($package eq "dumpvar" and $key eq "stab"));
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$total;
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}
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sub packageUsage {
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my ($package,@vars) = @_;
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$package .= "::" unless $package =~ /::$/;
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local *stab = *{"main::"};
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while ($package =~ /(\w+?::)/g){
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*stab = $ {stab}{$1};
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}
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local $TotalStrings = 0;
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local $CompleteTotal = 0;
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my ($key,$val);
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while (($key,$val) = each(%stab)) {
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next if @vars && !grep($key eq $_,@vars);
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globUsage \$val, $key unless $package eq 'dumpvar' and $key eq 'stab';
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}
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print "String space: $TotalStrings.\n";
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$CompleteTotal += $TotalStrings;
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print "\nGrand total = $CompleteTotal bytes\n";
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}
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1;
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