[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";
        if (ord('A') == 193) { # EBCDIC.
	    # EBCDIC has no concept of "\cA" or "A" being related
	    # to each other by a linear/boolean mapping.
	} else {
	    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 (ord('A') == 193) {
		if (/[\000-\011]/ or /[\013-\024\31-\037\177]/) {
		    $tick = '"';
		} else {
		    $tick = "'";
		}
            }  else {
		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;
	  if (ord('A') == 193) { # EBCDIC.
	      s/([\000-\037\177])/'\\c'.chr(193)/eg; # Unfinished.
	  } else {
	      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 = eval {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 = eval {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 = eval{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";
2f3efc97	44	if (ord('A') == 193) { # EBCDIC.
	45	# EBCDIC has no concept of "\cA" or "A" being related
	46	# to each other by a linear/boolean mapping.
	47	} else {
	48	s/([\001-\037\177])/'^'.pack('c',ord($1)^64)/eg;
	49	}
d338d6fe	50	$_;
	51	}
	52
f8543d02	53	sub uniescape {
	54	join("",
	55	map { $_ > 255 ? sprintf("\\x{%04X}", $_) : chr($_) }
	56	unpack("U*", $_[0]));
	57	}
	58
d338d6fe	59	sub stringify {
	60	local($_,$noticks) = @_;
	61	local($v) ;
54d04a52	62	my $tick = $tick;
d338d6fe	63
	64	return 'undef' unless defined $_ or not $printUndef;
	65	return $_ . "" if ref \$_ eq 'GLOB';
ee239bfe	66	$_ = &{'overload::StrVal'}($_)
ee239bfe	67	if $bareStringify and ref $_
475342a6	68	and %overload:: and defined &{'overload::StrVal'};
ee239bfe	69
54d04a52	70	if ($tick eq 'auto') {
2f3efc97	71	if (ord('A') == 193) {
	72	if (/[\000-\011]/ or /[\013-\024\31-\037\177]/) {
	73	$tick = '"';
	74	} else {
	75	$tick = "'";
	76	}
	77	} else {
	78	if (/[\000-\011\013-\037\177]/) {
	79	$tick = '"';
	80	} else {
	81	$tick = "'";
	82	}
	83	}
54d04a52	84	}
d338d6fe	85	if ($tick eq "'") {
	86	s/([\'\\])/\\$1/g;
	87	} elsif ($unctrl eq 'unctrl') {
	88	s/([\"\\])/\\$1/g ;
	89	s/([\000-\037\177])/'^'.pack('c',ord($1)^64)/eg;
f8543d02	90	# uniescape?
d338d6fe	91	s/([\200-\377])/'\\0x'.sprintf('%2X',ord($1))/eg
	92	if $quoteHighBit;
	93	} elsif ($unctrl eq 'quote') {
	94	s/([\"\\\$\@])/\\$1/g if $tick eq '"';
	95	s/\033/\\e/g;
2f3efc97	96	if (ord('A') == 193) { # EBCDIC.
	97	s/([\000-\037\177])/'\\c'.chr(193)/eg; # Unfinished.
	98	} else {
	99	s/([\000-\037\177])/'\\c'._escaped_ord($1)/eg;
	100	}
d338d6fe	101	}
f8543d02	102	$_ = uniescape($_);
d338d6fe	103	s/([\200-\377])/'\\'.sprintf('%3o',ord($1))/eg if $quoteHighBit;
	104	($noticks \|\| /^\d+(\.\d*)?\Z/)
	105	? $_
	106	: $tick . $_ . $tick;
	107	}
	108
bd6f3d36	109	# Ensure a resulting \ is escaped to be \\
	110	sub _escaped_ord {
	111	my $chr = shift;
	112	$chr = chr(ord($chr)^64);
	113	$chr =~ s{\\}{\\\\}g;
	114	return $chr;
	115	}
	116
d338d6fe	117	sub ShortArray {
	118	my $tArrayDepth = $#{$_[0]} ;
	119	$tArrayDepth = $#{$_[0]} < $arrayDepth-1 ? $#{$_[0]} : $arrayDepth-1
	120	unless $arrayDepth eq '' ;
	121	my $shortmore = "";
	122	$shortmore = " ..." if $tArrayDepth < $#{$_[0]} ;
	123	if (!grep(ref $_, @{$_[0]})) {
	124	$short = "0..$#{$_[0]} '" .
	125	join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
	126	return $short if length $short <= $compactDump;
	127	}
	128	undef;
	129	}
	130
	131	sub DumpElem {
	132	my $short = &stringify($_[0], ref $_[0]);
	133	if ($veryCompact && ref $_[0]
	134	&& (ref $_[0] eq 'ARRAY' and !grep(ref $_, @{$_[0]}) )) {
	135	my $end = "0..$#{$v} '" .
	136	join("' '", @{$_[0]}[0..$tArrayDepth]) . "'$shortmore";
	137	} elsif ($veryCompact && ref $_[0]
	138	&& (ref $_[0] eq 'HASH') and !grep(ref $_, values %{$_[0]})) {
	139	my $end = 1;
	140	$short = $sp . "0..$#{$v} '" .
	141	join("' '", @{$v}[0..$tArrayDepth]) . "'$shortmore";
	142	} else {
	143	print "$short\n";
9bcb75ad	144	unwrap($_[0],$_[1],$_[2]) if ref $_[0];
d338d6fe	145	}
	146	}
	147
	148	sub unwrap {
	149	return if $DB::signal;
	150	local($v) = shift ;
	151	local($s) = shift ; # extra no of spaces
d03c2a1b	152	local($m) = shift ; # maximum recursion depth
d03c2a1b	153	return if $m == 0;
ee239bfe	154	local(%v,@v,$sp,$value,$key,@sortKeys,$more,$shortmore,$short) ;
d338d6fe	155	local($tHashDepth,$tArrayDepth) ;
	156
	157	$sp = " " x $s ;
	158	$s += 3 ;
	159
	160	# Check for reused addresses
	161	if (ref $v) {
ee239bfe	162	my $val = $v;
ee239bfe	163	$val = &{'overload::StrVal'}($v)
475342a6	164	if %overload:: and defined &{'overload::StrVal'};
9bcb75ad	165	# Match type and address.
	166	# Unblessed references will look like TYPE(0x...)
	167	# Blessed references will look like Class=TYPE(0x...)
	168	($start_part, $val) = split /=/,$val;
	169	$val = $start_part unless defined $val;
	170	($item_type, $address) =
	171	$val =~ /([^\(]+) # Keep stuff that's
	172	# not an open paren
	173	\( # Skip open paren
	174	(0x[0-9a-f]+) # Save the address
	175	\) # Skip close paren
	176	$/x; # Should be at end now
	177
22fae026	178	if (!$dumpReused && defined $address) {
d338d6fe	179	$address{$address}++ ;
	180	if ( $address{$address} > 1 ) {
	181	print "${sp}-> REUSED_ADDRESS\n" ;
	182	return ;
	183	}
	184	}
	185	} elsif (ref \$v eq 'GLOB') {
9bcb75ad	186	# This is a raw glob. Special handling for that.
d338d6fe	187	$address = "$v" . ""; # To avoid a bug with globs
	188	$address{$address}++ ;
	189	if ( $address{$address} > 1 ) {
	190	print "${sp}DUMPED_GLOB\n" ;
	191	return ;
	192	}
	193	}
	194
7894fbab	195	if (ref $v eq 'Regexp') {
9bcb75ad	196	# Reformat the regexp to look the standard way.
7894fbab	197	my $re = "$v";
	198	$re =~ s,/,\\/,g;
	199	print "$sp-> qr/$re/\n";
	200	return;
	201	}
	202
9bcb75ad	203	if ( $item_type eq 'HASH' ) {
	204	# Hash ref or hash-based object.
	205	my @sortKeys = sort keys(%$v) ;
d338d6fe	206	undef $more ;
	207	$tHashDepth = $#sortKeys ;
	208	$tHashDepth = $#sortKeys < $hashDepth-1 ? $#sortKeys : $hashDepth-1
	209	unless $hashDepth eq '' ;
	210	$more = "....\n" if $tHashDepth < $#sortKeys ;
	211	$shortmore = "";
	212	$shortmore = ", ..." if $tHashDepth < $#sortKeys ;
	213	$#sortKeys = $tHashDepth ;
	214	if ($compactDump && !grep(ref $_, values %{$v})) {
	215	#$short = $sp .
	216	# (join ', ',
	217	# Next row core dumps during require from DB on 5.000, even with map {"_"}
	218	# map {&stringify($_) . " => " . &stringify($v->{$_})}
	219	# @sortKeys) . "'$shortmore";
	220	$short = $sp;
	221	my @keys;
	222	for (@sortKeys) {
	223	push @keys, &stringify($_) . " => " . &stringify($v->{$_});
	224	}
	225	$short .= join ', ', @keys;
	226	$short .= $shortmore;
	227	(print "$short\n"), return if length $short <= $compactDump;
	228	}
	229	for $key (@sortKeys) {
	230	return if $DB::signal;
	231	$value = $ {$v}{$key} ;
	232	print "$sp", &stringify($key), " => ";
d03c2a1b	233	DumpElem $value, $s, $m-1;
d338d6fe	234	}
	235	print "$sp empty hash\n" unless @sortKeys;
	236	print "$sp$more" if defined $more ;
9bcb75ad	237	} elsif ( $item_type eq 'ARRAY' ) {
	238	# Array ref or array-based object. Also: undef.
	239	# See how big the array is.
d338d6fe	240	$tArrayDepth = $#{$v} ;
d338d6fe	241	undef $more ;
9bcb75ad	242	# Bigger than the max?
d338d6fe	243	$tArrayDepth = $#{$v} < $arrayDepth-1 ? $#{$v} : $arrayDepth-1
600d99fa	244	if defined $arrayDepth && $arrayDepth ne '';
9bcb75ad	245	# Yep. Don't show it all.
d338d6fe	246	$more = "....\n" if $tArrayDepth < $#{$v} ;
	247	$shortmore = "";
	248	$shortmore = " ..." if $tArrayDepth < $#{$v} ;
9bcb75ad	249
d338d6fe	250	if ($compactDump && !grep(ref $_, @{$v})) {
d338d6fe	251	if ($#$v >= 0) {
54d04a52	252	$short = $sp . "0..$#{$v} " .
54d04a52	253	join(" ",
d9182636	254	map {exists $v->[$_] ? stringify $v->[$_] : "empty"} ($[..$tArrayDepth)
d9182636	255	) . "$shortmore";
d338d6fe	256	} else {
	257	$short = $sp . "empty array";
	258	}
	259	(print "$short\n"), return if length $short <= $compactDump;
	260	}
	261	#if ($compactDump && $short = ShortArray($v)) {
	262	# print "$short\n";
	263	# return;
	264	#}
	265	for $num ($[ .. $tArrayDepth) {
	266	return if $DB::signal;
	267	print "$sp$num ";
d9182636	268	if (exists $v->[$num]) {
9bcb75ad	269	if (defined $v->[$num]) {
	270	DumpElem $v->[$num], $s, $m-1;
	271	}
	272	else {
	273	print "undef\n";
	274	}
d9182636	275	} else {
	276	print "empty slot\n";
	277	}
d338d6fe	278	}
	279	print "$sp empty array\n" unless @$v;
	280	print "$sp$more" if defined $more ;
9bcb75ad	281	} elsif ( $item_type eq 'SCALAR' ) {
	282	unless (defined $$v) {
	283	print "$sp-> undef\n";
	284	return;
	285	}
d338d6fe	286	print "$sp-> ";
d03c2a1b	287	DumpElem $$v, $s, $m-1;
9bcb75ad	288	} elsif ( $item_type eq 'REF' ) {
	289	print "$sp-> $$v\n";
	290	return unless defined $$v;
	291	unwrap($$v, $s+3, $m-1);
	292	} elsif ( $item_type eq 'CODE' ) {
	293	# Code object or reference.
54d04a52	294	print "$sp-> ";
54d04a52	295	dumpsub (0, $v);
9bcb75ad	296	} elsif ( $item_type eq 'GLOB' ) {
9bcb75ad	297	# Glob object or reference.
d338d6fe	298	print "$sp-> ",&stringify($$v,1),"\n";
	299	if ($globPrint) {
	300	$s += 3;
3a4b996c	301	dumpglob($s, "{$$v}", $$v, 1, $m-1);
bef1d284	302	} elsif (defined ($fileno = eval {fileno($v)})) {
d338d6fe	303	print( (' ' x ($s+3)) . "FileHandle({$$v}) => fileno($fileno)\n" );
	304	}
	305	} elsif (ref \$v eq 'GLOB') {
9bcb75ad	306	# Raw glob (again?)
d338d6fe	307	if ($globPrint) {
3a4b996c	308	dumpglob($s, "{$v}", $v, 1, $m-1) if $globPrint;
bef1d284	309	} elsif (defined ($fileno = eval {fileno(\$v)})) {
d338d6fe	310	print( (' ' x $s) . "FileHandle({$v}) => fileno($fileno)\n" );
	311	}
	312	}
	313	}
	314
a7b657ee	315	sub matchlex {
	316	(my $var = $_[0]) =~ s/.//;
	317	$var eq $_[1] or
	318	($_[1] =~ /^([!~])(.)([\x00-\xff]*)/) and
	319	($1 eq '!') ^ (eval { $var =~ /$2$3/ });
	320	}
	321
d338d6fe	322	sub matchvar {
d338d6fe	323	$_[0] eq $_[1] or
b2391ea8	324	($_[1] =~ /^([!~])(.)([\x00-\xff]*)/) and
b2391ea8	325	($1 eq '!') ^ (eval {($_[2] . "::" . $_[0]) =~ /$2$3/});
d338d6fe	326	}
	327
	328	sub compactDump {
	329	$compactDump = shift if @_;
	330	$compactDump = 6*80-1 if $compactDump and $compactDump < 2;
	331	$compactDump;
	332	}
	333
	334	sub veryCompact {
	335	$veryCompact = shift if @_;
	336	compactDump(1) if !$compactDump and $veryCompact;
	337	$veryCompact;
	338	}
	339
	340	sub unctrlSet {
	341	if (@_) {
	342	my $in = shift;
	343	if ($in eq 'unctrl' or $in eq 'quote') {
	344	$unctrl = $in;
	345	} else {
	346	print "Unknown value for `unctrl'.\n";
	347	}
	348	}
	349	$unctrl;
	350	}
	351
	352	sub quote {
	353	if (@_ and $_[0] eq '"') {
	354	$tick = '"';
	355	$unctrl = 'quote';
54d04a52	356	} elsif (@_ and $_[0] eq 'auto') {
	357	$tick = 'auto';
	358	$unctrl = 'quote';
d338d6fe	359	} elsif (@_) { # Need to set
	360	$tick = "'";
	361	$unctrl = 'unctrl';
	362	}
	363	$tick;
	364	}
	365
	366	sub dumpglob {
	367	return if $DB::signal;
3a4b996c	368	my ($off,$key, $val, $all, $m) = @_;
d338d6fe	369	local(*entry) = $val;
d338d6fe	370	my $fileno;
54d04a52	371	if (($key !~ /^_</ or $dumpDBFiles) and defined $entry) {
d338d6fe	372	print( (' ' x $off) . "\$", &unctrl($key), " = " );
3a4b996c	373	DumpElem $entry, 3+$off, $m;
d338d6fe	374	}
475342a6	375	if (($key !~ /^_</ or $dumpDBFiles) and @entry) {
d338d6fe	376	print( (' ' x $off) . "\@$key = (\n" );
3a4b996c	377	unwrap(\@entry,3+$off,$m) ;
d338d6fe	378	print( (' ' x $off) . ")\n" );
d338d6fe	379	}
475342a6	380	if ($key ne "main::" && $key ne "DB::" && %entry
d338d6fe	381	&& ($dumpPackages or $key !~ /::$/)
54d04a52	382	&& ($key !~ /^_</ or $dumpDBFiles)
d338d6fe	383	&& !($package eq "dumpvar" and $key eq "stab")) {
d338d6fe	384	print( (' ' x $off) . "\%$key = (\n" );
3a4b996c	385	unwrap(\%entry,3+$off,$m) ;
d338d6fe	386	print( (' ' x $off) . ")\n" );
d338d6fe	387	}
bef1d284	388	if (defined ($fileno = eval{fileno(*entry)})) {
d338d6fe	389	print( (' ' x $off) . "FileHandle($key) => fileno($fileno)\n" );
	390	}
	391	if ($all) {
	392	if (defined &entry) {
54d04a52	393	dumpsub($off, $key);
d338d6fe	394	}
	395	}
	396	}
	397
a7b657ee	398	sub dumplex {
	399	return if $DB::signal;
	400	my ($key, $val, $m, @vars) = @_;
	401	return if @vars && !grep( matchlex($key, $_), @vars );
	402	local %address;
	403	my $off = 0; # It reads better this way
	404	my $fileno;
	405	if (UNIVERSAL::isa($val,'ARRAY')) {
	406	print( (' ' x $off) . "$key = (\n" );
	407	unwrap($val,3+$off,$m) ;
	408	print( (' ' x $off) . ")\n" );
	409	}
	410	elsif (UNIVERSAL::isa($val,'HASH')) {
	411	print( (' ' x $off) . "$key = (\n" );
	412	unwrap($val,3+$off,$m) ;
	413	print( (' ' x $off) . ")\n" );
	414	}
	415	elsif (UNIVERSAL::isa($val,'IO')) {
	416	print( (' ' x $off) . "FileHandle($key) => fileno($fileno)\n" );
	417	}
	418	# No lexical subroutines yet...
	419	# elsif (UNIVERSAL::isa($val,'CODE')) {
	420	# dumpsub($off, $$val);
	421	# }
	422	else {
	423	print( (' ' x $off) . &unctrl($key), " = " );
	424	DumpElem $$val, 3+$off, $m;
	425	}
	426	}
	427
83ee9e09	428	sub CvGV_name_or_bust {
	429	my $in = shift;
	430	return if $skipCvGV; # Backdoor to avoid problems if XS broken...
	431	$in = \&$in; # Hard reference...
	432	eval {require Devel::Peek; 1} or return;
	433	my $gv = Devel::Peek::CvGV($in) or return;
	434	$gv{PACKAGE} . '::' . $gv{NAME};
	435	}
	436
54d04a52	437	sub dumpsub {
54d04a52	438	my ($off,$sub) = @_;
83ee9e09	439	my $ini = $sub;
83ee9e09	440	my $s;
54d04a52	441	$sub = $1 if $sub =~ /^\{\(.)\}$/;
83ee9e09	442	my $subref = defined $1 ? \&$sub : \&$ini;
	443	my $place = $DB::sub{$sub} \|\| (($s = $subs{"$subref"}) && $DB::sub{$s})
	444	\|\| (($s = CvGV_name_or_bust($subref)) && $DB::sub{$s})
	445	\|\| ($subdump && ($s = findsubs("$subref")) && $DB::sub{$s});
54d04a52	446	$place = '???' unless defined $place;
83ee9e09	447	$s = $sub unless defined $s;
83ee9e09	448	print( (' ' x $off) . "&$s in $place\n" );
54d04a52	449	}
	450
	451	sub findsubs {
475342a6	452	return undef unless %DB::sub;
54d04a52	453	my ($addr, $name, $loc);
	454	while (($name, $loc) = each %DB::sub) {
	455	$addr = \&$name;
	456	$subs{"$addr"} = $name;
	457	}
	458	$subdump = 0;
	459	$subs{ shift() };
	460	}
	461
d338d6fe	462	sub main::dumpvar {
3a4b996c	463	my ($package,$m,@vars) = @_;
b2391ea8	464	local(%address,$key,$val,$^W);
d338d6fe	465	$package .= "::" unless $package =~ /::$/;
	466	stab = {"main::"};
	467	while ($package =~ /(\w+?::)/g){
	468	*stab = $ {stab}{$1};
	469	}
	470	local $TotalStrings = 0;
	471	local $Strings = 0;
	472	local $CompleteTotal = 0;
	473	while (($key,$val) = each(%stab)) {
	474	return if $DB::signal;
	475	next if @vars && !grep( matchvar($key, $_), @vars );
	476	if ($usageOnly) {
4c82ae22	477	globUsage(\$val, $key)
	478	if ($package ne 'dumpvar' or $key ne 'stab')
	479	and ref(\$val) eq 'GLOB';
d338d6fe	480	} else {
3a4b996c	481	dumpglob(0,$key, $val, 0, $m);
d338d6fe	482	}
	483	}
	484	if ($usageOnly) {
	485	print "String space: $TotalStrings bytes in $Strings strings.\n";
	486	$CompleteTotal += $TotalStrings;
	487	print "Grand total = $CompleteTotal bytes (1 level deep) + overhead.\n";
	488	}
	489	}
	490
	491	sub scalarUsage {
	492	my $size = length($_[0]);
	493	$TotalStrings += $size;
	494	$Strings++;
	495	$size;
	496	}
	497
	498	sub arrayUsage { # array ref, name
	499	my $size = 0;
	500	map {$size += scalarUsage($_)} @{$_[0]};
	501	my $len = @{$_[0]};
	502	print "\@$_[1] = $len item", ($len > 1 ? "s" : ""),
	503	" (data: $size bytes)\n"
	504	if defined $_[1];
	505	$CompleteTotal += $size;
	506	$size;
	507	}
	508
	509	sub hashUsage { # hash ref, name
	510	my @keys = keys %{$_[0]};
	511	my @values = values %{$_[0]};
	512	my $keys = arrayUsage \@keys;
	513	my $values = arrayUsage \@values;
	514	my $len = @keys;
	515	my $total = $keys + $values;
	516	print "\%$_[1] = $len item", ($len > 1 ? "s" : ""),
	517	" (keys: $keys; values: $values; total: $total bytes)\n"
	518	if defined $_[1];
	519	$total;
	520	}
	521
	522	sub globUsage { # glob ref, name
	523	local name = {$_[0]};
	524	$total = 0;
	525	$total += scalarUsage $name if defined $name;
475342a6	526	$total += arrayUsage \@name, $_[1] if @name;
475342a6	527	$total += hashUsage \%name, $_[1] if %name and $_[1] ne "main::"
d338d6fe	528	and $_[1] ne "DB::"; #and !($package eq "dumpvar" and $key eq "stab"));
	529	$total;
	530	}
	531
	532	sub packageUsage {
	533	my ($package,@vars) = @_;
	534	$package .= "::" unless $package =~ /::$/;
	535	local stab = {"main::"};
	536	while ($package =~ /(\w+?::)/g){
	537	*stab = $ {stab}{$1};
	538	}
	539	local $TotalStrings = 0;
	540	local $CompleteTotal = 0;
	541	my ($key,$val);
	542	while (($key,$val) = each(%stab)) {
	543	next if @vars && !grep($key eq $_,@vars);
	544	globUsage \$val, $key unless $package eq 'dumpvar' and $key eq 'stab';
	545	}
	546	print "String space: $TotalStrings.\n";
	547	$CompleteTotal += $TotalStrings;
	548	print "\nGrand total = $CompleteTotal bytes\n";
	549	}
	550
	551	1;
	552