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Diffstat (limited to 'contrib/perl5/lib/dumpvar.pl')
| -rw-r--r-- | contrib/perl5/lib/dumpvar.pl | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/contrib/perl5/lib/dumpvar.pl b/contrib/perl5/lib/dumpvar.pl new file mode 100644 index 000000000000..32d4692d13ab --- /dev/null +++ b/contrib/perl5/lib/dumpvar.pl @@ -0,0 +1,417 @@ +require 5.002; # For (defined ref) +package dumpvar; + +# Needed for PrettyPrinter only: + +# require 5.001; # Well, it coredumps anyway undef DB in 5.000 (not now) + +# translate control chars to ^X - Randal Schwartz +# Modifications to print types by Peter Gordon v1.0 + +# Ilya Zakharevich -- patches after 5.001 (and some before ;-) + +# Won't dump symbol tables and contents of debugged files by default + +$winsize = 80 unless defined $winsize; + + +# Defaults + +# $globPrint = 1; +$printUndef = 1 unless defined $printUndef; +$tick = "auto" unless defined $tick; +$unctrl = 'quote' unless defined $unctrl; +$subdump = 1; +$dumpReused = 0 unless defined $dumpReused; +$bareStringify = 1 unless defined $bareStringify; + +sub main::dumpValue { + local %address; + local $^W=0; + (print "undef\n"), return unless defined $_[0]; + (print &stringify($_[0]), "\n"), return unless ref $_[0]; + dumpvar::unwrap($_[0],0); +} + +# This one is good for variable names: + +sub unctrl { + local($_) = @_; + local($v) ; + + return \$_ if ref \$_ eq "GLOB"; + s/([\001-\037\177])/'^'.pack('c',ord($1)^64)/eg; + $_; +} + +sub stringify { + local($_,$noticks) = @_; + local($v) ; + my $tick = $tick; + + return 'undef' unless defined $_ or not $printUndef; + return $_ . "" if ref \$_ eq 'GLOB'; + $_ = &{'overload::StrVal'}($_) + if $bareStringify and ref $_ + and defined %overload:: and defined &{'overload::StrVal'}; + + if ($tick eq 'auto') { + if (/[\000-\011\013-\037\177]/) { + $tick = '"'; + }else { + $tick = "'"; + } + } + if ($tick eq "'") { + s/([\'\\])/\\$1/g; + } elsif ($unctrl eq 'unctrl') { + s/([\"\\])/\\$1/g ; + s/([\000-\037\177])/'^'.pack('c',ord($1)^64)/eg; + s/([\200-\377])/'\\0x'.sprintf('%2X',ord($1))/eg + if $quoteHighBit; + } elsif ($unctrl eq 'quote') { + s/([\"\\\$\@])/\\$1/g if $tick eq '"'; + s/\033/\\e/g; + s/([\000-\037\177])/'\\c'.chr(ord($1)^64)/eg; + } + s/([\200-\377])/'\\'.sprintf('%3o',ord($1))/eg if $quoteHighBit; + ($noticks || /^\d+(\.\d*)?\Z/) + ? $_ + : $tick . $_ . $tick; +} + +sub ShortArray { + my $tArrayDepth = $#{$_[0]} ; + $tArrayDepth = $#{$_[0]} < $arrayDepth-1 ? $#{$_[0]} : $arrayDepth-1 + unless $arrayDepth eq '' ; + my $shortmore = ""; + $shortmore = " ..." if $tArrayDepth < $#{$_[0]} ; + if (!grep(ref $_, @{$_[0]})) { + $short = "0..$#{$_[0]} '" . + join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore"; + return $short if length $short <= $compactDump; + } + undef; +} + +sub DumpElem { + my $short = &stringify($_[0], ref $_[0]); + if ($veryCompact && ref $_[0] + && (ref $_[0] eq 'ARRAY' and !grep(ref $_, @{$_[0]}) )) { + my $end = "0..$#{$v} '" . + join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore"; + } elsif ($veryCompact && ref $_[0] + && (ref $_[0] eq 'HASH') and !grep(ref $_, values %{$_[0]})) { + my $end = 1; + $short = $sp . "0..$#{$v} '" . + join("' '", @{$v}[0..$tArrayDepth]) . "'$shortmore"; + } else { + print "$short\n"; + unwrap($_[0],$_[1]); + } +} + +sub unwrap { + return if $DB::signal; + local($v) = shift ; + local($s) = shift ; # extra no of spaces + local(%v,@v,$sp,$value,$key,@sortKeys,$more,$shortmore,$short) ; + local($tHashDepth,$tArrayDepth) ; + + $sp = " " x $s ; + $s += 3 ; + + # Check for reused addresses + if (ref $v) { + my $val = $v; + $val = &{'overload::StrVal'}($v) + if defined %overload:: and defined &{'overload::StrVal'}; + ($address) = $val =~ /(0x[0-9a-f]+)\)$/ ; + if (!$dumpReused && defined $address) { + $address{$address}++ ; + if ( $address{$address} > 1 ) { + print "${sp}-> REUSED_ADDRESS\n" ; + return ; + } + } + } elsif (ref \$v eq 'GLOB') { + $address = "$v" . ""; # To avoid a bug with globs + $address{$address}++ ; + if ( $address{$address} > 1 ) { + print "${sp}*DUMPED_GLOB*\n" ; + return ; + } + } + + if ( UNIVERSAL::isa($v, 'HASH') ) { + @sortKeys = sort keys(%$v) ; + undef $more ; + $tHashDepth = $#sortKeys ; + $tHashDepth = $#sortKeys < $hashDepth-1 ? $#sortKeys : $hashDepth-1 + unless $hashDepth eq '' ; + $more = "....\n" if $tHashDepth < $#sortKeys ; + $shortmore = ""; + $shortmore = ", ..." if $tHashDepth < $#sortKeys ; + $#sortKeys = $tHashDepth ; + if ($compactDump && !grep(ref $_, values %{$v})) { + #$short = $sp . + # (join ', ', +# Next row core dumps during require from DB on 5.000, even with map {"_"} + # map {&stringify($_) . " => " . &stringify($v->{$_})} + # @sortKeys) . "'$shortmore"; + $short = $sp; + my @keys; + for (@sortKeys) { + push @keys, &stringify($_) . " => " . &stringify($v->{$_}); + } + $short .= join ', ', @keys; + $short .= $shortmore; + (print "$short\n"), return if length $short <= $compactDump; + } + for $key (@sortKeys) { + return if $DB::signal; + $value = $ {$v}{$key} ; + print "$sp", &stringify($key), " => "; + DumpElem $value, $s; + } + print "$sp empty hash\n" unless @sortKeys; + print "$sp$more" if defined $more ; + } elsif ( UNIVERSAL::isa($v, 'ARRAY') ) { + $tArrayDepth = $#{$v} ; + undef $more ; + $tArrayDepth = $#{$v} < $arrayDepth-1 ? $#{$v} : $arrayDepth-1 + unless $arrayDepth eq '' ; + $more = "....\n" if $tArrayDepth < $#{$v} ; + $shortmore = ""; + $shortmore = " ..." if $tArrayDepth < $#{$v} ; + if ($compactDump && !grep(ref $_, @{$v})) { + if ($#$v >= 0) { + $short = $sp . "0..$#{$v} " . + join(" ", + map {stringify $_} @{$v}[0..$tArrayDepth]) + . "$shortmore"; + } else { + $short = $sp . "empty array"; + } + (print "$short\n"), return if length $short <= $compactDump; + } + #if ($compactDump && $short = ShortArray($v)) { + # print "$short\n"; + # return; + #} + for $num ($[ .. $tArrayDepth) { + return if $DB::signal; + print "$sp$num "; + DumpElem $v->[$num], $s; + } + print "$sp empty array\n" unless @$v; + print "$sp$more" if defined $more ; + } elsif ( UNIVERSAL::isa($v, 'SCALAR') or ref $v eq 'REF' ) { + print "$sp-> "; + DumpElem $$v, $s; + } elsif ( UNIVERSAL::isa($v, 'CODE') ) { + print "$sp-> "; + dumpsub (0, $v); + } elsif ( UNIVERSAL::isa($v, 'GLOB') ) { + print "$sp-> ",&stringify($$v,1),"\n"; + if ($globPrint) { + $s += 3; + dumpglob($s, "{$$v}", $$v, 1); + } elsif (defined ($fileno = fileno($v))) { + print( (' ' x ($s+3)) . "FileHandle({$$v}) => fileno($fileno)\n" ); + } + } elsif (ref \$v eq 'GLOB') { + if ($globPrint) { + dumpglob($s, "{$v}", $v, 1) if $globPrint; + } elsif (defined ($fileno = fileno(\$v))) { + print( (' ' x $s) . "FileHandle({$v}) => fileno($fileno)\n" ); + } + } +} + +sub matchvar { + $_[0] eq $_[1] or + ($_[1] =~ /^([!~])(.)([\x00-\xff]*)/) and + ($1 eq '!') ^ (eval {($_[2] . "::" . $_[0]) =~ /$2$3/}); +} + +sub compactDump { + $compactDump = shift if @_; + $compactDump = 6*80-1 if $compactDump and $compactDump < 2; + $compactDump; +} + +sub veryCompact { + $veryCompact = shift if @_; + compactDump(1) if !$compactDump and $veryCompact; + $veryCompact; +} + +sub unctrlSet { + if (@_) { + my $in = shift; + if ($in eq 'unctrl' or $in eq 'quote') { + $unctrl = $in; + } else { + print "Unknown value for `unctrl'.\n"; + } + } + $unctrl; +} + +sub quote { + if (@_ and $_[0] eq '"') { + $tick = '"'; + $unctrl = 'quote'; + } elsif (@_ and $_[0] eq 'auto') { + $tick = 'auto'; + $unctrl = 'quote'; + } elsif (@_) { # Need to set + $tick = "'"; + $unctrl = 'unctrl'; + } + $tick; +} + +sub dumpglob { + return if $DB::signal; + my ($off,$key, $val, $all) = @_; + local(*entry) = $val; + my $fileno; + if (($key !~ /^_</ or $dumpDBFiles) and defined $entry) { + print( (' ' x $off) . "\$", &unctrl($key), " = " ); + DumpElem $entry, 3+$off; + } + if (($key !~ /^_</ or $dumpDBFiles) and defined @entry) { + print( (' ' x $off) . "\@$key = (\n" ); + unwrap(\@entry,3+$off) ; + print( (' ' x $off) . ")\n" ); + } + if ($key ne "main::" && $key ne "DB::" && defined %entry + && ($dumpPackages or $key !~ /::$/) + && ($key !~ /^_</ or $dumpDBFiles) + && !($package eq "dumpvar" and $key eq "stab")) { + print( (' ' x $off) . "\%$key = (\n" ); + unwrap(\%entry,3+$off) ; + print( (' ' x $off) . ")\n" ); + } + if (defined ($fileno = fileno(*entry))) { + print( (' ' x $off) . "FileHandle($key) => fileno($fileno)\n" ); + } + if ($all) { + if (defined &entry) { + dumpsub($off, $key); + } + } +} + +sub dumpsub { + my ($off,$sub) = @_; + $sub = $1 if $sub =~ /^\{\*(.*)\}$/; + my $subref = \&$sub; + my $place = $DB::sub{$sub} || (($sub = $subs{"$subref"}) && $DB::sub{$sub}) + || ($subdump && ($sub = findsubs("$subref")) && $DB::sub{$sub}); + $place = '???' unless defined $place; + print( (' ' x $off) . "&$sub in $place\n" ); +} + +sub findsubs { + return undef unless defined %DB::sub; + my ($addr, $name, $loc); + while (($name, $loc) = each %DB::sub) { + $addr = \&$name; + $subs{"$addr"} = $name; + } + $subdump = 0; + $subs{ shift() }; +} + +sub main::dumpvar { + my ($package,@vars) = @_; + local(%address,$key,$val,$^W); + $package .= "::" unless $package =~ /::$/; + *stab = *{"main::"}; + while ($package =~ /(\w+?::)/g){ + *stab = $ {stab}{$1}; + } + local $TotalStrings = 0; + local $Strings = 0; + local $CompleteTotal = 0; + while (($key,$val) = each(%stab)) { + return if $DB::signal; + next if @vars && !grep( matchvar($key, $_), @vars ); + if ($usageOnly) { + globUsage(\$val, $key) unless $package eq 'dumpvar' and $key eq 'stab'; + } else { + dumpglob(0,$key, $val); + } + } + if ($usageOnly) { + print "String space: $TotalStrings bytes in $Strings strings.\n"; + $CompleteTotal += $TotalStrings; + print "Grand total = $CompleteTotal bytes (1 level deep) + overhead.\n"; + } +} + +sub scalarUsage { + my $size = length($_[0]); + $TotalStrings += $size; + $Strings++; + $size; +} + +sub arrayUsage { # array ref, name + my $size = 0; + map {$size += scalarUsage($_)} @{$_[0]}; + my $len = @{$_[0]}; + print "\@$_[1] = $len item", ($len > 1 ? "s" : ""), + " (data: $size bytes)\n" + if defined $_[1]; + $CompleteTotal += $size; + $size; +} + +sub hashUsage { # hash ref, name + my @keys = keys %{$_[0]}; + my @values = values %{$_[0]}; + my $keys = arrayUsage \@keys; + my $values = arrayUsage \@values; + my $len = @keys; + my $total = $keys + $values; + print "\%$_[1] = $len item", ($len > 1 ? "s" : ""), + " (keys: $keys; values: $values; total: $total bytes)\n" + if defined $_[1]; + $total; +} + +sub globUsage { # glob ref, name + local *name = *{$_[0]}; + $total = 0; + $total += scalarUsage $name if defined $name; + $total += arrayUsage \@name, $_[1] if defined @name; + $total += hashUsage \%name, $_[1] if defined %name and $_[1] ne "main::" + and $_[1] ne "DB::"; #and !($package eq "dumpvar" and $key eq "stab")); + $total; +} + +sub packageUsage { + my ($package,@vars) = @_; + $package .= "::" unless $package =~ /::$/; + local *stab = *{"main::"}; + while ($package =~ /(\w+?::)/g){ + *stab = $ {stab}{$1}; + } + local $TotalStrings = 0; + local $CompleteTotal = 0; + my ($key,$val); + while (($key,$val) = each(%stab)) { + next if @vars && !grep($key eq $_,@vars); + globUsage \$val, $key unless $package eq 'dumpvar' and $key eq 'stab'; + } + print "String space: $TotalStrings.\n"; + $CompleteTotal += $TotalStrings; + print "\nGrand total = $CompleteTotal bytes\n"; +} + +1; + |