[p5sagit/p5-mst-13.2.git] / lib / dumpvar.pl

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 $_[0];
  push @_, -1 if @_ == 1;
  dumpvar::unwrap($_[0], 0, $_[1]);
}

# 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 uniescape {
    join("",
	 map { $_ > 255 ? sprintf("\\x{%04X}", $_) : chr($_) }
	     unpack("U*", $_[0]));
}

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 %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;
	  # uniescape?
	  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'._escaped_ord($1)/eg;
	}
	$_ = uniescape($_);
	s/([\200-\377])/'\\'.sprintf('%3o',ord($1))/eg if $quoteHighBit;
	($noticks || /^\d+(\.\d*)?\Z/) 
	  ? $_ 
	  : $tick . $_ . $tick;
}

# Ensure a resulting \ is escaped to be \\
sub _escaped_ord {
    my $chr = shift;
    $chr = chr(ord($chr)^64);
    $chr =~ s{\\}{\\\\}g;
    return $chr;
}

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],$_[1],$_[2]) if ref $_[0];
  }
}

sub unwrap {
    return if $DB::signal;
    local($v) = shift ; 
    local($s) = shift ; # extra no of spaces
    local($m) = shift ; # maximum recursion depth
    return if $m == 0;
    local(%v,@v,$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 %overload:: and defined &{'overload::StrVal'};
      # Match type and address.                      
      # Unblessed references will look like TYPE(0x...)
      # Blessed references will look like Class=TYPE(0x...)
      ($start_part, $val) = split /=/,$val;
      $val = $start_part unless defined $val;
      ($item_type, $address) = 
        $val =~ /([^\(]+)        # Keep stuff that's     
                                 # not an open paren
                 \(              # Skip open paren
                 (0x[0-9a-f]+)   # Save the address
                 \)              # Skip close paren
                 $/x;            # Should be at end now

      if (!$dumpReused && defined $address) { 
	$address{$address}++ ;
	if ( $address{$address} > 1 ) { 
	  print "${sp}-> REUSED_ADDRESS\n" ; 
	  return ; 
	} 
      }
    } elsif (ref \$v eq 'GLOB') {
      # This is a raw glob. Special handling for that.
      $address = "$v" . "";	# To avoid a bug with globs
      $address{$address}++ ;
      if ( $address{$address} > 1 ) { 
	print "${sp}*DUMPED_GLOB*\n" ; 
	return ; 
      } 
    }

    if (ref $v eq 'Regexp') {
      # Reformat the regexp to look the standard way.
      my $re = "$v";
      $re =~ s,/,\\/,g;
      print "$sp-> qr/$re/\n";
      return;
    }

    if ( $item_type eq 'HASH' ) { 
        # Hash ref or hash-based object.
	my @sortKeys = sort keys(%$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, $m-1;
	}
	print "$sp  empty hash\n" unless @sortKeys;
	print "$sp$more" if defined $more ;
    } elsif ( $item_type eq 'ARRAY' ) { 
        # Array ref or array-based object. Also: undef.
        # See how big the array is.
	$tArrayDepth = $#{$v} ; 
	undef $more ; 
        # Bigger than the max?
	$tArrayDepth = $#{$v} < $arrayDepth-1 ? $#{$v} : $arrayDepth-1 
	  if defined $arrayDepth && $arrayDepth ne '';
        # Yep. Don't show it all.
	$more = "....\n" if $tArrayDepth < $#{$v} ; 
	$shortmore = "";
	$shortmore = " ..." if $tArrayDepth < $#{$v} ;

	if ($compactDump && !grep(ref $_, @{$v})) {
	  if ($#$v >= 0) {
	    $short = $sp . "0..$#{$v}  " . 
	      join(" ", 
		   map {exists $v->[$_] ? stringify $v->[$_] : "empty"} ($[..$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  ";
	    if (exists $v->[$num]) {
                if (defined $v->[$num]) {
	          DumpElem $v->[$num], $s, $m-1;
                } 
                else {
                  print "undef\n";
                }
	    } else {
	    	print "empty slot\n";
	    }
	}
	print "$sp  empty array\n" unless @$v;
	print "$sp$more" if defined $more ;  
    } elsif ( $item_type eq 'SCALAR' ) { 
            unless (defined $$v) {
              print "$sp-> undef\n";
              return;
            }
	    print "$sp-> ";
	    DumpElem $$v, $s, $m-1;
    } elsif ( $item_type eq 'REF' ) { 
	    print "$sp-> $$v\n";
            return unless defined $$v;
	    unwrap($$v, $s+3, $m-1);
    } elsif ( $item_type eq 'CODE' ) { 
            # Code object or reference.
	    print "$sp-> ";
	    dumpsub (0, $v);
    } elsif ( $item_type eq 'GLOB' ) {
      # Glob object or reference.
      print "$sp-> ",&stringify($$v,1),"\n";
      if ($globPrint) {
	$s += 3;
       dumpglob($s, "{$$v}", $$v, 1, $m-1);
      } elsif (defined ($fileno = fileno($v))) {
	print( (' ' x ($s+3)) .  "FileHandle({$$v}) => fileno($fileno)\n" );
      }
    } elsif (ref \$v eq 'GLOB') {
      # Raw glob (again?)
      if ($globPrint) {
       dumpglob($s, "{$v}", $v, 1, $m-1) if $globPrint;
      } elsif (defined ($fileno = fileno(\$v))) {
	print( (' ' x $s) .  "FileHandle({$v}) => fileno($fileno)\n" );
      }
    }
}

sub matchlex {
  (my $var = $_[0]) =~ s/.//;
  $var eq $_[1] or 
    ($_[1] =~ /^([!~])(.)([\x00-\xff]*)/) and 
      ($1 eq '!') ^ (eval { $var =~ /$2$3/ });
}

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, $m) = @_;
    local(*entry) = $val;
    my $fileno;
    if (($key !~ /^_</ or $dumpDBFiles) and defined $entry) {
      print( (' ' x $off) . "\$", &unctrl($key), " = " );
      DumpElem $entry, 3+$off, $m;
    }
    if (($key !~ /^_</ or $dumpDBFiles) and @entry) {
      print( (' ' x $off) . "\@$key = (\n" );
      unwrap(\@entry,3+$off,$m) ;
      print( (' ' x $off) .  ")\n" );
    }
    if ($key ne "main::" && $key ne "DB::" && %entry
	&& ($dumpPackages or $key !~ /::$/)
	&& ($key !~ /^_</ or $dumpDBFiles)
	&& !($package eq "dumpvar" and $key eq "stab")) {
      print( (' ' x $off) . "\%$key = (\n" );
      unwrap(\%entry,3+$off,$m) ;
      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 dumplex {
  return if $DB::signal;
  my ($key, $val, $m, @vars) = @_;
  return if @vars && !grep( matchlex($key, $_), @vars );
  local %address;
  my $off = 0;  # It reads better this way
  my $fileno;
  if (UNIVERSAL::isa($val,'ARRAY')) {
    print( (' ' x $off) . "$key = (\n" );
    unwrap($val,3+$off,$m) ;
    print( (' ' x $off) .  ")\n" );
  }
  elsif (UNIVERSAL::isa($val,'HASH')) {
    print( (' ' x $off) . "$key = (\n" );
    unwrap($val,3+$off,$m) ;
    print( (' ' x $off) .  ")\n" );
  }
  elsif (UNIVERSAL::isa($val,'IO')) {
    print( (' ' x $off) .  "FileHandle($key) => fileno($fileno)\n" );
  }
  #  No lexical subroutines yet...
  #  elsif (UNIVERSAL::isa($val,'CODE')) {
  #    dumpsub($off, $$val);
  #  }
  else {
    print( (' ' x $off) . &unctrl($key), " = " );
    DumpElem $$val, 3+$off, $m;
  }
}

sub CvGV_name_or_bust {
  my $in = shift;
  return if $skipCvGV;		# Backdoor to avoid problems if XS broken...
  $in = \&$in;			# Hard reference...
  eval {require Devel::Peek; 1} or return;
  my $gv = Devel::Peek::CvGV($in) or return;
  *$gv{PACKAGE} . '::' . *$gv{NAME};
}

sub dumpsub {
    my ($off,$sub) = @_;
    my $ini = $sub;
    my $s;
    $sub = $1 if $sub =~ /^\{\*(.*)\}$/;
    my $subref = defined $1 ? \&$sub : \&$ini;
    my $place = $DB::sub{$sub} || (($s = $subs{"$subref"}) && $DB::sub{$s})
      || (($s = CvGV_name_or_bust($subref)) && $DB::sub{$s})
      || ($subdump && ($s = findsubs("$subref")) && $DB::sub{$s});
    $place = '???' unless defined $place;
    $s = $sub unless defined $s;
    print( (' ' x $off) .  "&$s in $place\n" );
}

sub findsubs {
  return undef unless %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 ($package,$m,@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, $key)
	  if ($package ne 'dumpvar' or $key ne 'stab')
	     and ref(\$val) eq 'GLOB';
      } else {
       dumpglob(0,$key, $val, 0, $m);
      }
    }
    if ($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 @name;
  $total += hashUsage \%name, $_[1] if %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;
Commit	Line	Data
d338d6fe	1	require 5.002; # For (defined ref)
	2	package dumpvar;
	3
	4	# Needed for PrettyPrinter only:
	5
	6	# require 5.001; # Well, it coredumps anyway undef DB in 5.000 (not now)
	7
	8	# translate control chars to ^X - Randal Schwartz
	9	# Modifications to print types by Peter Gordon v1.0
	10
	11	# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
	12
	13	# Won't dump symbol tables and contents of debugged files by default
	14
	15	$winsize = 80 unless defined $winsize;
	16
	17
	18	# Defaults
	19
	20	# $globPrint = 1;
	21	$printUndef = 1 unless defined $printUndef;
54d04a52	22	$tick = "auto" unless defined $tick;
d338d6fe	23	$unctrl = 'quote' unless defined $unctrl;
54d04a52	24	$subdump = 1;
22fae026	25	$dumpReused = 0 unless defined $dumpReused;
ee239bfe	26	$bareStringify = 1 unless defined $bareStringify;
d338d6fe	27
	28	sub main::dumpValue {
	29	local %address;
b2391ea8	30	local $^W=0;
d338d6fe	31	(print "undef\n"), return unless defined $_[0];
d338d6fe	32	(print &stringify($_[0]), "\n"), return unless ref $_[0];
f338af47	33	push @_, -1 if @_ == 1;
f338af47	34	dumpvar::unwrap($_[0], 0, $_[1]);
d338d6fe	35	}
	36
	37	# This one is good for variable names:
	38
	39	sub unctrl {
	40	local($_) = @_;
	41	local($v) ;
	42
	43	return \$_ if ref \$_ eq "GLOB";
	44	s/([\001-\037\177])/'^'.pack('c',ord($1)^64)/eg;
	45	$_;
	46	}
	47
f8543d02	48	sub uniescape {
	49	join("",
	50	map { $_ > 255 ? sprintf("\\x{%04X}", $_) : chr($_) }
	51	unpack("U*", $_[0]));
	52	}
	53
d338d6fe	54	sub stringify {
	55	local($_,$noticks) = @_;
	56	local($v) ;
54d04a52	57	my $tick = $tick;
d338d6fe	58
	59	return 'undef' unless defined $_ or not $printUndef;
	60	return $_ . "" if ref \$_ eq 'GLOB';
ee239bfe	61	$_ = &{'overload::StrVal'}($_)
ee239bfe	62	if $bareStringify and ref $_
475342a6	63	and %overload:: and defined &{'overload::StrVal'};
ee239bfe	64
54d04a52	65	if ($tick eq 'auto') {
	66	if (/[\000-\011\013-\037\177]/) {
	67	$tick = '"';
	68	}else {
	69	$tick = "'";
	70	}
	71	}
d338d6fe	72	if ($tick eq "'") {
	73	s/([\'\\])/\\$1/g;
	74	} elsif ($unctrl eq 'unctrl') {
	75	s/([\"\\])/\\$1/g ;
	76	s/([\000-\037\177])/'^'.pack('c',ord($1)^64)/eg;
f8543d02	77	# uniescape?
d338d6fe	78	s/([\200-\377])/'\\0x'.sprintf('%2X',ord($1))/eg
	79	if $quoteHighBit;
	80	} elsif ($unctrl eq 'quote') {
	81	s/([\"\\\$\@])/\\$1/g if $tick eq '"';
	82	s/\033/\\e/g;
bd6f3d36	83	s/([\000-\037\177])/'\\c'._escaped_ord($1)/eg;
d338d6fe	84	}
f8543d02	85	$_ = uniescape($_);
d338d6fe	86	s/([\200-\377])/'\\'.sprintf('%3o',ord($1))/eg if $quoteHighBit;
	87	($noticks \|\| /^\d+(\.\d*)?\Z/)
	88	? $_
	89	: $tick . $_ . $tick;
	90	}
	91
bd6f3d36	92	# Ensure a resulting \ is escaped to be \\
	93	sub _escaped_ord {
	94	my $chr = shift;
	95	$chr = chr(ord($chr)^64);
	96	$chr =~ s{\\}{\\\\}g;
	97	return $chr;
	98	}
	99
d338d6fe	100	sub ShortArray {
	101	my $tArrayDepth = $#{$_[0]} ;
	102	$tArrayDepth = $#{$_[0]} < $arrayDepth-1 ? $#{$_[0]} : $arrayDepth-1
	103	unless $arrayDepth eq '' ;
	104	my $shortmore = "";
	105	$shortmore = " ..." if $tArrayDepth < $#{$_[0]} ;
	106	if (!grep(ref $_, @{$_[0]})) {
	107	$short = "0..$#{$_[0]} '" .
	108	join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
	109	return $short if length $short <= $compactDump;
	110	}
	111	undef;
	112	}
	113
	114	sub DumpElem {
	115	my $short = &stringify($_[0], ref $_[0]);
	116	if ($veryCompact && ref $_[0]
	117	&& (ref $_[0] eq 'ARRAY' and !grep(ref $_, @{$_[0]}) )) {
	118	my $end = "0..$#{$v} '" .
	119	join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
	120	} elsif ($veryCompact && ref $_[0]
	121	&& (ref $_[0] eq 'HASH') and !grep(ref $_, values %{$_[0]})) {
	122	my $end = 1;
	123	$short = $sp . "0..$#{$v} '" .
	124	join("' '", @{$v}[0..$tArrayDepth]) . "'$shortmore";
	125	} else {
	126	print "$short\n";
9bcb75ad	127	unwrap($_[0],$_[1],$_[2]) if ref $_[0];
d338d6fe	128	}
	129	}
	130
	131	sub unwrap {
	132	return if $DB::signal;
	133	local($v) = shift ;
	134	local($s) = shift ; # extra no of spaces
d03c2a1b	135	local($m) = shift ; # maximum recursion depth
d03c2a1b	136	return if $m == 0;
ee239bfe	137	local(%v,@v,$sp,$value,$key,@sortKeys,$more,$shortmore,$short) ;
d338d6fe	138	local($tHashDepth,$tArrayDepth) ;
	139
	140	$sp = " " x $s ;
	141	$s += 3 ;
	142
	143	# Check for reused addresses
	144	if (ref $v) {
ee239bfe	145	my $val = $v;
ee239bfe	146	$val = &{'overload::StrVal'}($v)
475342a6	147	if %overload:: and defined &{'overload::StrVal'};
9bcb75ad	148	# Match type and address.
	149	# Unblessed references will look like TYPE(0x...)
	150	# Blessed references will look like Class=TYPE(0x...)
	151	($start_part, $val) = split /=/,$val;
	152	$val = $start_part unless defined $val;
	153	($item_type, $address) =
	154	$val =~ /([^\(]+) # Keep stuff that's
	155	# not an open paren
	156	\( # Skip open paren
	157	(0x[0-9a-f]+) # Save the address
	158	\) # Skip close paren
	159	$/x; # Should be at end now
	160
22fae026	161	if (!$dumpReused && defined $address) {
d338d6fe	162	$address{$address}++ ;
	163	if ( $address{$address} > 1 ) {
	164	print "${sp}-> REUSED_ADDRESS\n" ;
	165	return ;
	166	}
	167	}
	168	} elsif (ref \$v eq 'GLOB') {
9bcb75ad	169	# This is a raw glob. Special handling for that.
d338d6fe	170	$address = "$v" . ""; # To avoid a bug with globs
	171	$address{$address}++ ;
	172	if ( $address{$address} > 1 ) {
	173	print "${sp}DUMPED_GLOB\n" ;
	174	return ;
	175	}
	176	}
	177
7894fbab	178	if (ref $v eq 'Regexp') {
9bcb75ad	179	# Reformat the regexp to look the standard way.
7894fbab	180	my $re = "$v";
	181	$re =~ s,/,\\/,g;
	182	print "$sp-> qr/$re/\n";
	183	return;
	184	}
	185
9bcb75ad	186	if ( $item_type eq 'HASH' ) {
	187	# Hash ref or hash-based object.
	188	my @sortKeys = sort keys(%$v) ;
d338d6fe	189	undef $more ;
	190	$tHashDepth = $#sortKeys ;
	191	$tHashDepth = $#sortKeys < $hashDepth-1 ? $#sortKeys : $hashDepth-1
	192	unless $hashDepth eq '' ;
	193	$more = "....\n" if $tHashDepth < $#sortKeys ;
	194	$shortmore = "";
	195	$shortmore = ", ..." if $tHashDepth < $#sortKeys ;
	196	$#sortKeys = $tHashDepth ;
	197	if ($compactDump && !grep(ref $_, values %{$v})) {
	198	#$short = $sp .
	199	# (join ', ',
	200	# Next row core dumps during require from DB on 5.000, even with map {"_"}
	201	# map {&stringify($_) . " => " . &stringify($v->{$_})}
	202	# @sortKeys) . "'$shortmore";
	203	$short = $sp;
	204	my @keys;
	205	for (@sortKeys) {
	206	push @keys, &stringify($_) . " => " . &stringify($v->{$_});
	207	}
	208	$short .= join ', ', @keys;
	209	$short .= $shortmore;
	210	(print "$short\n"), return if length $short <= $compactDump;
	211	}
	212	for $key (@sortKeys) {
	213	return if $DB::signal;
	214	$value = $ {$v}{$key} ;
	215	print "$sp", &stringify($key), " => ";
d03c2a1b	216	DumpElem $value, $s, $m-1;
d338d6fe	217	}
	218	print "$sp empty hash\n" unless @sortKeys;
	219	print "$sp$more" if defined $more ;
9bcb75ad	220	} elsif ( $item_type eq 'ARRAY' ) {
	221	# Array ref or array-based object. Also: undef.
	222	# See how big the array is.
d338d6fe	223	$tArrayDepth = $#{$v} ;
d338d6fe	224	undef $more ;
9bcb75ad	225	# Bigger than the max?
d338d6fe	226	$tArrayDepth = $#{$v} < $arrayDepth-1 ? $#{$v} : $arrayDepth-1
600d99fa	227	if defined $arrayDepth && $arrayDepth ne '';
9bcb75ad	228	# Yep. Don't show it all.
d338d6fe	229	$more = "....\n" if $tArrayDepth < $#{$v} ;
	230	$shortmore = "";
	231	$shortmore = " ..." if $tArrayDepth < $#{$v} ;
9bcb75ad	232
d338d6fe	233	if ($compactDump && !grep(ref $_, @{$v})) {
d338d6fe	234	if ($#$v >= 0) {
54d04a52	235	$short = $sp . "0..$#{$v} " .
54d04a52	236	join(" ",
d9182636	237	map {exists $v->[$_] ? stringify $v->[$_] : "empty"} ($[..$tArrayDepth)
d9182636	238	) . "$shortmore";
d338d6fe	239	} else {
	240	$short = $sp . "empty array";
	241	}
	242	(print "$short\n"), return if length $short <= $compactDump;
	243	}
	244	#if ($compactDump && $short = ShortArray($v)) {
	245	# print "$short\n";
	246	# return;
	247	#}
	248	for $num ($[ .. $tArrayDepth) {
	249	return if $DB::signal;
	250	print "$sp$num ";
d9182636	251	if (exists $v->[$num]) {
9bcb75ad	252	if (defined $v->[$num]) {
	253	DumpElem $v->[$num], $s, $m-1;
	254	}
	255	else {
	256	print "undef\n";
	257	}
d9182636	258	} else {
	259	print "empty slot\n";
	260	}
d338d6fe	261	}
	262	print "$sp empty array\n" unless @$v;
	263	print "$sp$more" if defined $more ;
9bcb75ad	264	} elsif ( $item_type eq 'SCALAR' ) {
	265	unless (defined $$v) {
	266	print "$sp-> undef\n";
	267	return;
	268	}
d338d6fe	269	print "$sp-> ";
d03c2a1b	270	DumpElem $$v, $s, $m-1;
9bcb75ad	271	} elsif ( $item_type eq 'REF' ) {
	272	print "$sp-> $$v\n";
	273	return unless defined $$v;
	274	unwrap($$v, $s+3, $m-1);
	275	} elsif ( $item_type eq 'CODE' ) {
	276	# Code object or reference.
54d04a52	277	print "$sp-> ";
54d04a52	278	dumpsub (0, $v);
9bcb75ad	279	} elsif ( $item_type eq 'GLOB' ) {
9bcb75ad	280	# Glob object or reference.
d338d6fe	281	print "$sp-> ",&stringify($$v,1),"\n";
	282	if ($globPrint) {
	283	$s += 3;
3a4b996c	284	dumpglob($s, "{$$v}", $$v, 1, $m-1);
d338d6fe	285	} elsif (defined ($fileno = fileno($v))) {
	286	print( (' ' x ($s+3)) . "FileHandle({$$v}) => fileno($fileno)\n" );
	287	}
	288	} elsif (ref \$v eq 'GLOB') {
9bcb75ad	289	# Raw glob (again?)
d338d6fe	290	if ($globPrint) {
3a4b996c	291	dumpglob($s, "{$v}", $v, 1, $m-1) if $globPrint;
d338d6fe	292	} elsif (defined ($fileno = fileno(\$v))) {
	293	print( (' ' x $s) . "FileHandle({$v}) => fileno($fileno)\n" );
	294	}
	295	}
	296	}
	297
a7b657ee	298	sub matchlex {
	299	(my $var = $_[0]) =~ s/.//;
	300	$var eq $_[1] or
	301	($_[1] =~ /^([!~])(.)([\x00-\xff]*)/) and
	302	($1 eq '!') ^ (eval { $var =~ /$2$3/ });
	303	}
	304
d338d6fe	305	sub matchvar {
d338d6fe	306	$_[0] eq $_[1] or
b2391ea8	307	($_[1] =~ /^([!~])(.)([\x00-\xff]*)/) and
b2391ea8	308	($1 eq '!') ^ (eval {($_[2] . "::" . $_[0]) =~ /$2$3/});
d338d6fe	309	}
	310
	311	sub compactDump {
	312	$compactDump = shift if @_;
	313	$compactDump = 6*80-1 if $compactDump and $compactDump < 2;
	314	$compactDump;
	315	}
	316
	317	sub veryCompact {
	318	$veryCompact = shift if @_;
	319	compactDump(1) if !$compactDump and $veryCompact;
	320	$veryCompact;
	321	}
	322
	323	sub unctrlSet {
	324	if (@_) {
	325	my $in = shift;
	326	if ($in eq 'unctrl' or $in eq 'quote') {
	327	$unctrl = $in;
	328	} else {
	329	print "Unknown value for `unctrl'.\n";
	330	}
	331	}
	332	$unctrl;
	333	}
	334
	335	sub quote {
	336	if (@_ and $_[0] eq '"') {
	337	$tick = '"';
	338	$unctrl = 'quote';
54d04a52	339	} elsif (@_ and $_[0] eq 'auto') {
	340	$tick = 'auto';
	341	$unctrl = 'quote';
d338d6fe	342	} elsif (@_) { # Need to set
	343	$tick = "'";
	344	$unctrl = 'unctrl';
	345	}
	346	$tick;
	347	}
	348
	349	sub dumpglob {
	350	return if $DB::signal;
3a4b996c	351	my ($off,$key, $val, $all, $m) = @_;
d338d6fe	352	local(*entry) = $val;
d338d6fe	353	my $fileno;
54d04a52	354	if (($key !~ /^_</ or $dumpDBFiles) and defined $entry) {
d338d6fe	355	print( (' ' x $off) . "\$", &unctrl($key), " = " );
3a4b996c	356	DumpElem $entry, 3+$off, $m;
d338d6fe	357	}
475342a6	358	if (($key !~ /^_</ or $dumpDBFiles) and @entry) {
d338d6fe	359	print( (' ' x $off) . "\@$key = (\n" );
3a4b996c	360	unwrap(\@entry,3+$off,$m) ;
d338d6fe	361	print( (' ' x $off) . ")\n" );
d338d6fe	362	}
475342a6	363	if ($key ne "main::" && $key ne "DB::" && %entry
d338d6fe	364	&& ($dumpPackages or $key !~ /::$/)
54d04a52	365	&& ($key !~ /^_</ or $dumpDBFiles)
d338d6fe	366	&& !($package eq "dumpvar" and $key eq "stab")) {
d338d6fe	367	print( (' ' x $off) . "\%$key = (\n" );
3a4b996c	368	unwrap(\%entry,3+$off,$m) ;
d338d6fe	369	print( (' ' x $off) . ")\n" );
	370	}
	371	if (defined ($fileno = fileno(*entry))) {
	372	print( (' ' x $off) . "FileHandle($key) => fileno($fileno)\n" );
	373	}
	374	if ($all) {
	375	if (defined &entry) {
54d04a52	376	dumpsub($off, $key);
d338d6fe	377	}
	378	}
	379	}
	380
a7b657ee	381	sub dumplex {
	382	return if $DB::signal;
	383	my ($key, $val, $m, @vars) = @_;
	384	return if @vars && !grep( matchlex($key, $_), @vars );
	385	local %address;
	386	my $off = 0; # It reads better this way
	387	my $fileno;
	388	if (UNIVERSAL::isa($val,'ARRAY')) {
	389	print( (' ' x $off) . "$key = (\n" );
	390	unwrap($val,3+$off,$m) ;
	391	print( (' ' x $off) . ")\n" );
	392	}
	393	elsif (UNIVERSAL::isa($val,'HASH')) {
	394	print( (' ' x $off) . "$key = (\n" );
	395	unwrap($val,3+$off,$m) ;
	396	print( (' ' x $off) . ")\n" );
	397	}
	398	elsif (UNIVERSAL::isa($val,'IO')) {
	399	print( (' ' x $off) . "FileHandle($key) => fileno($fileno)\n" );
	400	}
	401	# No lexical subroutines yet...
	402	# elsif (UNIVERSAL::isa($val,'CODE')) {
	403	# dumpsub($off, $$val);
	404	# }
	405	else {
	406	print( (' ' x $off) . &unctrl($key), " = " );
	407	DumpElem $$val, 3+$off, $m;
	408	}
	409	}
	410
83ee9e09	411	sub CvGV_name_or_bust {
	412	my $in = shift;
	413	return if $skipCvGV; # Backdoor to avoid problems if XS broken...
	414	$in = \&$in; # Hard reference...
	415	eval {require Devel::Peek; 1} or return;
	416	my $gv = Devel::Peek::CvGV($in) or return;
	417	$gv{PACKAGE} . '::' . $gv{NAME};
	418	}
	419
54d04a52	420	sub dumpsub {
54d04a52	421	my ($off,$sub) = @_;
83ee9e09	422	my $ini = $sub;
83ee9e09	423	my $s;
54d04a52	424	$sub = $1 if $sub =~ /^\{\(.)\}$/;
83ee9e09	425	my $subref = defined $1 ? \&$sub : \&$ini;
	426	my $place = $DB::sub{$sub} \|\| (($s = $subs{"$subref"}) && $DB::sub{$s})
	427	\|\| (($s = CvGV_name_or_bust($subref)) && $DB::sub{$s})
	428	\|\| ($subdump && ($s = findsubs("$subref")) && $DB::sub{$s});
54d04a52	429	$place = '???' unless defined $place;
83ee9e09	430	$s = $sub unless defined $s;
83ee9e09	431	print( (' ' x $off) . "&$s in $place\n" );
54d04a52	432	}
	433
	434	sub findsubs {
475342a6	435	return undef unless %DB::sub;
54d04a52	436	my ($addr, $name, $loc);
	437	while (($name, $loc) = each %DB::sub) {
	438	$addr = \&$name;
	439	$subs{"$addr"} = $name;
	440	}
	441	$subdump = 0;
	442	$subs{ shift() };
	443	}
	444
d338d6fe	445	sub main::dumpvar {
3a4b996c	446	my ($package,$m,@vars) = @_;
b2391ea8	447	local(%address,$key,$val,$^W);
d338d6fe	448	$package .= "::" unless $package =~ /::$/;
	449	stab = {"main::"};
	450	while ($package =~ /(\w+?::)/g){
	451	*stab = $ {stab}{$1};
	452	}
	453	local $TotalStrings = 0;
	454	local $Strings = 0;
	455	local $CompleteTotal = 0;
	456	while (($key,$val) = each(%stab)) {
	457	return if $DB::signal;
	458	next if @vars && !grep( matchvar($key, $_), @vars );
	459	if ($usageOnly) {
4c82ae22	460	globUsage(\$val, $key)
	461	if ($package ne 'dumpvar' or $key ne 'stab')
	462	and ref(\$val) eq 'GLOB';
d338d6fe	463	} else {
3a4b996c	464	dumpglob(0,$key, $val, 0, $m);
d338d6fe	465	}
	466	}
	467	if ($usageOnly) {
	468	print "String space: $TotalStrings bytes in $Strings strings.\n";
	469	$CompleteTotal += $TotalStrings;
	470	print "Grand total = $CompleteTotal bytes (1 level deep) + overhead.\n";
	471	}
	472	}
	473
	474	sub scalarUsage {
	475	my $size = length($_[0]);
	476	$TotalStrings += $size;
	477	$Strings++;
	478	$size;
	479	}
	480
	481	sub arrayUsage { # array ref, name
	482	my $size = 0;
	483	map {$size += scalarUsage($_)} @{$_[0]};
	484	my $len = @{$_[0]};
	485	print "\@$_[1] = $len item", ($len > 1 ? "s" : ""),
	486	" (data: $size bytes)\n"
	487	if defined $_[1];
	488	$CompleteTotal += $size;
	489	$size;
	490	}
	491
	492	sub hashUsage { # hash ref, name
	493	my @keys = keys %{$_[0]};
	494	my @values = values %{$_[0]};
	495	my $keys = arrayUsage \@keys;
	496	my $values = arrayUsage \@values;
	497	my $len = @keys;
	498	my $total = $keys + $values;
	499	print "\%$_[1] = $len item", ($len > 1 ? "s" : ""),
	500	" (keys: $keys; values: $values; total: $total bytes)\n"
	501	if defined $_[1];
	502	$total;
	503	}
	504
	505	sub globUsage { # glob ref, name
	506	local name = {$_[0]};
	507	$total = 0;
	508	$total += scalarUsage $name if defined $name;
475342a6	509	$total += arrayUsage \@name, $_[1] if @name;
475342a6	510	$total += hashUsage \%name, $_[1] if %name and $_[1] ne "main::"
d338d6fe	511	and $_[1] ne "DB::"; #and !($package eq "dumpvar" and $key eq "stab"));
	512	$total;
	513	}
	514
	515	sub packageUsage {
	516	my ($package,@vars) = @_;
	517	$package .= "::" unless $package =~ /::$/;
	518	local stab = {"main::"};
	519	while ($package =~ /(\w+?::)/g){
	520	*stab = $ {stab}{$1};
	521	}
	522	local $TotalStrings = 0;
	523	local $CompleteTotal = 0;
	524	my ($key,$val);
	525	while (($key,$val) = each(%stab)) {
	526	next if @vars && !grep($key eq $_,@vars);
	527	globUsage \$val, $key unless $package eq 'dumpvar' and $key eq 'stab';
	528	}
	529	print "String space: $TotalStrings.\n";
	530	$CompleteTotal += $TotalStrings;
	531	print "\nGrand total = $CompleteTotal bytes\n";
	532	}
	533
	534	1;
	535