Viewing file:  dumpvar.pl (14.46 KB) -rw-r--r--
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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;
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