| File | /opt/wise/lib/perl5/5.10.0/x86_64-linux-thread-multi/Data/Dumper.pm | Statements Executed | 41 | Total Time | 0.006329 seconds |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine | |
|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | BEGIN |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Bless |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | DESTROY |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Deepcopy |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Deparse |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Dump |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Dumper |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | DumperX |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Dumpf |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Dumpp |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Dumpperl |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Freezer |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Indent |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Maxdepth |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Names |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Pad |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Pair |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Purity |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Quotekeys |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Reset |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Seen |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Sortkeys |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Terse |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Toaster |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Useperl |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Useqq |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Values |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | Varname |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | __ANON__[:106] |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | __ANON__[:111] |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | __ANON__[:118] |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | __ANON__[:123] |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | _dump |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | _quote |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | _sortkeys |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | new |
| 0 | 0 | 0 | 0 | 0 | Data::Dumper:: | qquote |
| Line | Stmts. | Exclusive Time | Avg. | Code |
|---|---|---|---|---|
| 1 | # | |||
| 2 | # Data/Dumper.pm | |||
| 3 | # | |||
| 4 | # convert perl data structures into perl syntax suitable for both printing | |||
| 5 | # and eval | |||
| 6 | # | |||
| 7 | # Documentation at the __END__ | |||
| 8 | # | |||
| 9 | ||||
| 10 | package Data::Dumper; | |||
| 11 | ||||
| 12 | 1 | 1.0e-6 | 1.0e-6 | $VERSION = '2.121_14'; |
| 13 | ||||
| 14 | #$| = 1; | |||
| 15 | ||||
| 16 | 3 | 5.2e-5 | 1.7e-5 | use 5.006_001; |
| 17 | 1 | 1.0e-6 | 1.0e-6 | require Exporter; |
| 18 | 1 | 0.00097 | 0.00097 | require overload; |
| 19 | ||||
| 20 | 3 | 8.9e-5 | 3.0e-5 | use Carp; # spent 49µs making 1 call to Exporter::import |
| 21 | ||||
| 22 | BEGIN { | |||
| 23 | 5 | 9.0e-6 | 1.8e-6 | @ISA = qw(Exporter); |
| 24 | @EXPORT = qw(Dumper); | |||
| 25 | @EXPORT_OK = qw(DumperX); | |||
| 26 | ||||
| 27 | # if run under miniperl, or otherwise lacking dynamic loading, | |||
| 28 | # XSLoader should be attempted to load, or the pure perl flag | |||
| 29 | # toggled on load failure. | |||
| 30 | 1 | 6.0e-6 | 6.0e-6 | eval { |
| 31 | require XSLoader; | |||
| 32 | }; | |||
| 33 | $Useperl = 1 if $@; | |||
| 34 | 1 | 0.00437 | 0.00437 | } |
| 35 | ||||
| 36 | 1 | 0.00027 | 0.00027 | XSLoader::load( 'Data::Dumper' ) unless $Useperl; # spent 268µs making 1 call to XSLoader::load |
| 37 | ||||
| 38 | # module vars and their defaults | |||
| 39 | 1 | 1.0e-6 | 1.0e-6 | $Indent = 2 unless defined $Indent; |
| 40 | 1 | 0 | 0 | $Purity = 0 unless defined $Purity; |
| 41 | 1 | 1.0e-6 | 1.0e-6 | $Pad = "" unless defined $Pad; |
| 42 | 1 | 1.0e-6 | 1.0e-6 | $Varname = "VAR" unless defined $Varname; |
| 43 | 1 | 0 | 0 | $Useqq = 0 unless defined $Useqq; |
| 44 | 1 | 1.0e-6 | 1.0e-6 | $Terse = 0 unless defined $Terse; |
| 45 | 1 | 1.0e-6 | 1.0e-6 | $Freezer = "" unless defined $Freezer; |
| 46 | 1 | 0 | 0 | $Toaster = "" unless defined $Toaster; |
| 47 | 1 | 1.0e-6 | 1.0e-6 | $Deepcopy = 0 unless defined $Deepcopy; |
| 48 | 1 | 0 | 0 | $Quotekeys = 1 unless defined $Quotekeys; |
| 49 | 1 | 1.0e-6 | 1.0e-6 | $Bless = "bless" unless defined $Bless; |
| 50 | #$Expdepth = 0 unless defined $Expdepth; | |||
| 51 | 1 | 0 | 0 | $Maxdepth = 0 unless defined $Maxdepth; |
| 52 | 1 | 1.0e-6 | 1.0e-6 | $Pair = ' => ' unless defined $Pair; |
| 53 | 1 | 1.0e-6 | 1.0e-6 | $Useperl = 0 unless defined $Useperl; |
| 54 | 1 | 0 | 0 | $Sortkeys = 0 unless defined $Sortkeys; |
| 55 | 1 | 0 | 0 | $Deparse = 0 unless defined $Deparse; |
| 56 | ||||
| 57 | # | |||
| 58 | # expects an arrayref of values to be dumped. | |||
| 59 | # can optionally pass an arrayref of names for the values. | |||
| 60 | # names must have leading $ sign stripped. begin the name with * | |||
| 61 | # to cause output of arrays and hashes rather than refs. | |||
| 62 | # | |||
| 63 | sub new { | |||
| 64 | my($c, $v, $n) = @_; | |||
| 65 | ||||
| 66 | croak "Usage: PACKAGE->new(ARRAYREF, [ARRAYREF])" | |||
| 67 | unless (defined($v) && (ref($v) eq 'ARRAY')); | |||
| 68 | $n = [] unless (defined($n) && (ref($v) eq 'ARRAY')); | |||
| 69 | ||||
| 70 | my($s) = { | |||
| 71 | level => 0, # current recursive depth | |||
| 72 | indent => $Indent, # various styles of indenting | |||
| 73 | pad => $Pad, # all lines prefixed by this string | |||
| 74 | xpad => "", # padding-per-level | |||
| 75 | apad => "", # added padding for hash keys n such | |||
| 76 | sep => "", # list separator | |||
| 77 | pair => $Pair, # hash key/value separator: defaults to ' => ' | |||
| 78 | seen => {}, # local (nested) refs (id => [name, val]) | |||
| 79 | todump => $v, # values to dump [] | |||
| 80 | names => $n, # optional names for values [] | |||
| 81 | varname => $Varname, # prefix to use for tagging nameless ones | |||
| 82 | purity => $Purity, # degree to which output is evalable | |||
| 83 | useqq => $Useqq, # use "" for strings (backslashitis ensues) | |||
| 84 | terse => $Terse, # avoid name output (where feasible) | |||
| 85 | freezer => $Freezer, # name of Freezer method for objects | |||
| 86 | toaster => $Toaster, # name of method to revive objects | |||
| 87 | deepcopy => $Deepcopy, # dont cross-ref, except to stop recursion | |||
| 88 | quotekeys => $Quotekeys, # quote hash keys | |||
| 89 | 'bless' => $Bless, # keyword to use for "bless" | |||
| 90 | # expdepth => $Expdepth, # cutoff depth for explicit dumping | |||
| 91 | maxdepth => $Maxdepth, # depth beyond which we give up | |||
| 92 | useperl => $Useperl, # use the pure Perl implementation | |||
| 93 | sortkeys => $Sortkeys, # flag or filter for sorting hash keys | |||
| 94 | deparse => $Deparse, # use B::Deparse for coderefs | |||
| 95 | }; | |||
| 96 | ||||
| 97 | if ($Indent > 0) { | |||
| 98 | $s->{xpad} = " "; | |||
| 99 | $s->{sep} = "\n"; | |||
| 100 | } | |||
| 101 | return bless($s, $c); | |||
| 102 | } | |||
| 103 | ||||
| 104 | 3 | 9.0e-6 | 3.0e-6 | if ($] >= 5.006) { |
| 105 | # Packed numeric addresses take less memory. Plus pack is faster than sprintf | |||
| 106 | *init_refaddr_format = sub {}; | |||
| 107 | ||||
| 108 | *format_refaddr = sub { | |||
| 109 | require Scalar::Util; | |||
| 110 | pack "J", Scalar::Util::refaddr(shift); | |||
| 111 | }; | |||
| 112 | } else { | |||
| 113 | *init_refaddr_format = sub { | |||
| 114 | require Config; | |||
| 115 | my $f = $Config::Config{uvxformat}; | |||
| 116 | $f =~ tr/"//d; | |||
| 117 | our $refaddr_format = "0x%" . $f; | |||
| 118 | }; | |||
| 119 | ||||
| 120 | *format_refaddr = sub { | |||
| 121 | require Scalar::Util; | |||
| 122 | sprintf our $refaddr_format, Scalar::Util::refaddr(shift); | |||
| 123 | } | |||
| 124 | } | |||
| 125 | ||||
| 126 | # | |||
| 127 | # add-to or query the table of already seen references | |||
| 128 | # | |||
| 129 | sub Seen { | |||
| 130 | my($s, $g) = @_; | |||
| 131 | if (defined($g) && (ref($g) eq 'HASH')) { | |||
| 132 | init_refaddr_format(); | |||
| 133 | my($k, $v, $id); | |||
| 134 | while (($k, $v) = each %$g) { | |||
| 135 | if (defined $v and ref $v) { | |||
| 136 | $id = format_refaddr($v); | |||
| 137 | if ($k =~ /^[*](.*)$/) { | |||
| 138 | $k = (ref $v eq 'ARRAY') ? ( "\\\@" . $1 ) : | |||
| 139 | (ref $v eq 'HASH') ? ( "\\\%" . $1 ) : | |||
| 140 | (ref $v eq 'CODE') ? ( "\\\&" . $1 ) : | |||
| 141 | ( "\$" . $1 ) ; | |||
| 142 | } | |||
| 143 | elsif ($k !~ /^\$/) { | |||
| 144 | $k = "\$" . $k; | |||
| 145 | } | |||
| 146 | $s->{seen}{$id} = [$k, $v]; | |||
| 147 | } | |||
| 148 | else { | |||
| 149 | carp "Only refs supported, ignoring non-ref item \$$k"; | |||
| 150 | } | |||
| 151 | } | |||
| 152 | return $s; | |||
| 153 | } | |||
| 154 | else { | |||
| 155 | return map { @$_ } values %{$s->{seen}}; | |||
| 156 | } | |||
| 157 | } | |||
| 158 | ||||
| 159 | # | |||
| 160 | # set or query the values to be dumped | |||
| 161 | # | |||
| 162 | sub Values { | |||
| 163 | my($s, $v) = @_; | |||
| 164 | if (defined($v) && (ref($v) eq 'ARRAY')) { | |||
| 165 | $s->{todump} = [@$v]; # make a copy | |||
| 166 | return $s; | |||
| 167 | } | |||
| 168 | else { | |||
| 169 | return @{$s->{todump}}; | |||
| 170 | } | |||
| 171 | } | |||
| 172 | ||||
| 173 | # | |||
| 174 | # set or query the names of the values to be dumped | |||
| 175 | # | |||
| 176 | sub Names { | |||
| 177 | my($s, $n) = @_; | |||
| 178 | if (defined($n) && (ref($n) eq 'ARRAY')) { | |||
| 179 | $s->{names} = [@$n]; # make a copy | |||
| 180 | return $s; | |||
| 181 | } | |||
| 182 | else { | |||
| 183 | return @{$s->{names}}; | |||
| 184 | } | |||
| 185 | } | |||
| 186 | ||||
| 187 | sub DESTROY {} | |||
| 188 | ||||
| 189 | sub Dump { | |||
| 190 | return &Dumpxs | |||
| 191 | unless $Data::Dumper::Useperl || (ref($_[0]) && $_[0]->{useperl}) || | |||
| 192 | $Data::Dumper::Useqq || (ref($_[0]) && $_[0]->{useqq}) || | |||
| 193 | $Data::Dumper::Deparse || (ref($_[0]) && $_[0]->{deparse}); | |||
| 194 | return &Dumpperl; | |||
| 195 | } | |||
| 196 | ||||
| 197 | # | |||
| 198 | # dump the refs in the current dumper object. | |||
| 199 | # expects same args as new() if called via package name. | |||
| 200 | # | |||
| 201 | sub Dumpperl { | |||
| 202 | my($s) = shift; | |||
| 203 | my(@out, $val, $name); | |||
| 204 | my($i) = 0; | |||
| 205 | local(@post); | |||
| 206 | init_refaddr_format(); | |||
| 207 | ||||
| 208 | $s = $s->new(@_) unless ref $s; | |||
| 209 | ||||
| 210 | for $val (@{$s->{todump}}) { | |||
| 211 | my $out = ""; | |||
| 212 | @post = (); | |||
| 213 | $name = $s->{names}[$i++]; | |||
| 214 | if (defined $name) { | |||
| 215 | if ($name =~ /^[*](.*)$/) { | |||
| 216 | if (defined $val) { | |||
| 217 | $name = (ref $val eq 'ARRAY') ? ( "\@" . $1 ) : | |||
| 218 | (ref $val eq 'HASH') ? ( "\%" . $1 ) : | |||
| 219 | (ref $val eq 'CODE') ? ( "\*" . $1 ) : | |||
| 220 | ( "\$" . $1 ) ; | |||
| 221 | } | |||
| 222 | else { | |||
| 223 | $name = "\$" . $1; | |||
| 224 | } | |||
| 225 | } | |||
| 226 | elsif ($name !~ /^\$/) { | |||
| 227 | $name = "\$" . $name; | |||
| 228 | } | |||
| 229 | } | |||
| 230 | else { | |||
| 231 | $name = "\$" . $s->{varname} . $i; | |||
| 232 | } | |||
| 233 | ||||
| 234 | # Ensure hash iterator is reset | |||
| 235 | if (ref($val) eq 'HASH') { | |||
| 236 | keys(%$val); | |||
| 237 | } | |||
| 238 | ||||
| 239 | my $valstr; | |||
| 240 | { | |||
| 241 | local($s->{apad}) = $s->{apad}; | |||
| 242 | $s->{apad} .= ' ' x (length($name) + 3) if $s->{indent} >= 2; | |||
| 243 | $valstr = $s->_dump($val, $name); | |||
| 244 | } | |||
| 245 | ||||
| 246 | $valstr = "$name = " . $valstr . ';' if @post or !$s->{terse}; | |||
| 247 | $out .= $s->{pad} . $valstr . $s->{sep}; | |||
| 248 | $out .= $s->{pad} . join(';' . $s->{sep} . $s->{pad}, @post) | |||
| 249 | . ';' . $s->{sep} if @post; | |||
| 250 | ||||
| 251 | push @out, $out; | |||
| 252 | } | |||
| 253 | return wantarray ? @out : join('', @out); | |||
| 254 | } | |||
| 255 | ||||
| 256 | # wrap string in single quotes (escaping if needed) | |||
| 257 | sub _quote { | |||
| 258 | my $val = shift; | |||
| 259 | $val =~ s/([\\\'])/\\$1/g; | |||
| 260 | return "'" . $val . "'"; | |||
| 261 | } | |||
| 262 | ||||
| 263 | # | |||
| 264 | # twist, toil and turn; | |||
| 265 | # and recurse, of course. | |||
| 266 | # sometimes sordidly; | |||
| 267 | # and curse if no recourse. | |||
| 268 | # | |||
| 269 | sub _dump { | |||
| 270 | my($s, $val, $name) = @_; | |||
| 271 | my($sname); | |||
| 272 | my($out, $realpack, $realtype, $type, $ipad, $id, $blesspad); | |||
| 273 | ||||
| 274 | $type = ref $val; | |||
| 275 | $out = ""; | |||
| 276 | ||||
| 277 | if ($type) { | |||
| 278 | ||||
| 279 | # Call the freezer method if it's specified and the object has the | |||
| 280 | # method. Trap errors and warn() instead of die()ing, like the XS | |||
| 281 | # implementation. | |||
| 282 | my $freezer = $s->{freezer}; | |||
| 283 | if ($freezer and UNIVERSAL::can($val, $freezer)) { | |||
| 284 | eval { $val->$freezer() }; | |||
| 285 | warn "WARNING(Freezer method call failed): $@" if $@; | |||
| 286 | } | |||
| 287 | ||||
| 288 | require Scalar::Util; | |||
| 289 | $realpack = Scalar::Util::blessed($val); | |||
| 290 | $realtype = $realpack ? Scalar::Util::reftype($val) : ref $val; | |||
| 291 | $id = format_refaddr($val); | |||
| 292 | ||||
| 293 | # if it has a name, we need to either look it up, or keep a tab | |||
| 294 | # on it so we know when we hit it later | |||
| 295 | if (defined($name) and length($name)) { | |||
| 296 | # keep a tab on it so that we dont fall into recursive pit | |||
| 297 | if (exists $s->{seen}{$id}) { | |||
| 298 | # if ($s->{expdepth} < $s->{level}) { | |||
| 299 | if ($s->{purity} and $s->{level} > 0) { | |||
| 300 | $out = ($realtype eq 'HASH') ? '{}' : | |||
| 301 | ($realtype eq 'ARRAY') ? '[]' : | |||
| 302 | 'do{my $o}' ; | |||
| 303 | push @post, $name . " = " . $s->{seen}{$id}[0]; | |||
| 304 | } | |||
| 305 | else { | |||
| 306 | $out = $s->{seen}{$id}[0]; | |||
| 307 | if ($name =~ /^([\@\%])/) { | |||
| 308 | my $start = $1; | |||
| 309 | if ($out =~ /^\\$start/) { | |||
| 310 | $out = substr($out, 1); | |||
| 311 | } | |||
| 312 | else { | |||
| 313 | $out = $start . '{' . $out . '}'; | |||
| 314 | } | |||
| 315 | } | |||
| 316 | } | |||
| 317 | return $out; | |||
| 318 | # } | |||
| 319 | } | |||
| 320 | else { | |||
| 321 | # store our name | |||
| 322 | $s->{seen}{$id} = [ (($name =~ /^[@%]/) ? ('\\' . $name ) : | |||
| 323 | ($realtype eq 'CODE' and | |||
| 324 | $name =~ /^[*](.*)$/) ? ('\\&' . $1 ) : | |||
| 325 | $name ), | |||
| 326 | $val ]; | |||
| 327 | } | |||
| 328 | } | |||
| 329 | ||||
| 330 | if ($realpack and $realpack eq 'Regexp') { | |||
| 331 | $out = "$val"; | |||
| 332 | $out =~ s,/,\\/,g; | |||
| 333 | return "qr/$out/"; | |||
| 334 | } | |||
| 335 | ||||
| 336 | # If purity is not set and maxdepth is set, then check depth: | |||
| 337 | # if we have reached maximum depth, return the string | |||
| 338 | # representation of the thing we are currently examining | |||
| 339 | # at this depth (i.e., 'Foo=ARRAY(0xdeadbeef)'). | |||
| 340 | if (!$s->{purity} | |||
| 341 | and $s->{maxdepth} > 0 | |||
| 342 | and $s->{level} >= $s->{maxdepth}) | |||
| 343 | { | |||
| 344 | return qq['$val']; | |||
| 345 | } | |||
| 346 | ||||
| 347 | # we have a blessed ref | |||
| 348 | if ($realpack) { | |||
| 349 | $out = $s->{'bless'} . '( '; | |||
| 350 | $blesspad = $s->{apad}; | |||
| 351 | $s->{apad} .= ' ' if ($s->{indent} >= 2); | |||
| 352 | } | |||
| 353 | ||||
| 354 | $s->{level}++; | |||
| 355 | $ipad = $s->{xpad} x $s->{level}; | |||
| 356 | ||||
| 357 | if ($realtype eq 'SCALAR' || $realtype eq 'REF') { | |||
| 358 | if ($realpack) { | |||
| 359 | $out .= 'do{\\(my $o = ' . $s->_dump($$val, "\${$name}") . ')}'; | |||
| 360 | } | |||
| 361 | else { | |||
| 362 | $out .= '\\' . $s->_dump($$val, "\${$name}"); | |||
| 363 | } | |||
| 364 | } | |||
| 365 | elsif ($realtype eq 'GLOB') { | |||
| 366 | $out .= '\\' . $s->_dump($$val, "*{$name}"); | |||
| 367 | } | |||
| 368 | elsif ($realtype eq 'ARRAY') { | |||
| 369 | my($v, $pad, $mname); | |||
| 370 | my($i) = 0; | |||
| 371 | $out .= ($name =~ /^\@/) ? '(' : '['; | |||
| 372 | $pad = $s->{sep} . $s->{pad} . $s->{apad}; | |||
| 373 | ($name =~ /^\@(.*)$/) ? ($mname = "\$" . $1) : | |||
| 374 | # omit -> if $foo->[0]->{bar}, but not ${$foo->[0]}->{bar} | |||
| 375 | ($name =~ /^\\?[\%\@\*\$][^{].*[]}]$/) ? ($mname = $name) : | |||
| 376 | ($mname = $name . '->'); | |||
| 377 | $mname .= '->' if $mname =~ /^\*.+\{[A-Z]+\}$/; | |||
| 378 | for $v (@$val) { | |||
| 379 | $sname = $mname . '[' . $i . ']'; | |||
| 380 | $out .= $pad . $ipad . '#' . $i if $s->{indent} >= 3; | |||
| 381 | $out .= $pad . $ipad . $s->_dump($v, $sname); | |||
| 382 | $out .= "," if $i++ < $#$val; | |||
| 383 | } | |||
| 384 | $out .= $pad . ($s->{xpad} x ($s->{level} - 1)) if $i; | |||
| 385 | $out .= ($name =~ /^\@/) ? ')' : ']'; | |||
| 386 | } | |||
| 387 | elsif ($realtype eq 'HASH') { | |||
| 388 | my($k, $v, $pad, $lpad, $mname, $pair); | |||
| 389 | $out .= ($name =~ /^\%/) ? '(' : '{'; | |||
| 390 | $pad = $s->{sep} . $s->{pad} . $s->{apad}; | |||
| 391 | $lpad = $s->{apad}; | |||
| 392 | $pair = $s->{pair}; | |||
| 393 | ($name =~ /^\%(.*)$/) ? ($mname = "\$" . $1) : | |||
| 394 | # omit -> if $foo->[0]->{bar}, but not ${$foo->[0]}->{bar} | |||
| 395 | ($name =~ /^\\?[\%\@\*\$][^{].*[]}]$/) ? ($mname = $name) : | |||
| 396 | ($mname = $name . '->'); | |||
| 397 | $mname .= '->' if $mname =~ /^\*.+\{[A-Z]+\}$/; | |||
| 398 | my ($sortkeys, $keys, $key) = ("$s->{sortkeys}"); | |||
| 399 | if ($sortkeys) { | |||
| 400 | if (ref($s->{sortkeys}) eq 'CODE') { | |||
| 401 | $keys = $s->{sortkeys}($val); | |||
| 402 | unless (ref($keys) eq 'ARRAY') { | |||
| 403 | carp "Sortkeys subroutine did not return ARRAYREF"; | |||
| 404 | $keys = []; | |||
| 405 | } | |||
| 406 | } | |||
| 407 | else { | |||
| 408 | $keys = [ sort keys %$val ]; | |||
| 409 | } | |||
| 410 | } | |||
| 411 | while (($k, $v) = ! $sortkeys ? (each %$val) : | |||
| 412 | @$keys ? ($key = shift(@$keys), $val->{$key}) : | |||
| 413 | () ) | |||
| 414 | { | |||
| 415 | my $nk = $s->_dump($k, ""); | |||
| 416 | $nk = $1 if !$s->{quotekeys} and $nk =~ /^[\"\']([A-Za-z_]\w*)[\"\']$/; | |||
| 417 | $sname = $mname . '{' . $nk . '}'; | |||
| 418 | $out .= $pad . $ipad . $nk . $pair; | |||
| 419 | ||||
| 420 | # temporarily alter apad | |||
| 421 | $s->{apad} .= (" " x (length($nk) + 4)) if $s->{indent} >= 2; | |||
| 422 | $out .= $s->_dump($val->{$k}, $sname) . ","; | |||
| 423 | $s->{apad} = $lpad if $s->{indent} >= 2; | |||
| 424 | } | |||
| 425 | if (substr($out, -1) eq ',') { | |||
| 426 | chop $out; | |||
| 427 | $out .= $pad . ($s->{xpad} x ($s->{level} - 1)); | |||
| 428 | } | |||
| 429 | $out .= ($name =~ /^\%/) ? ')' : '}'; | |||
| 430 | } | |||
| 431 | elsif ($realtype eq 'CODE') { | |||
| 432 | if ($s->{deparse}) { | |||
| 433 | require B::Deparse; | |||
| 434 | my $sub = 'sub ' . (B::Deparse->new)->coderef2text($val); | |||
| 435 | $pad = $s->{sep} . $s->{pad} . $s->{apad} . $s->{xpad} x ($s->{level} - 1); | |||
| 436 | $sub =~ s/\n/$pad/gse; | |||
| 437 | $out .= $sub; | |||
| 438 | } else { | |||
| 439 | $out .= 'sub { "DUMMY" }'; | |||
| 440 | carp "Encountered CODE ref, using dummy placeholder" if $s->{purity}; | |||
| 441 | } | |||
| 442 | } | |||
| 443 | else { | |||
| 444 | croak "Can\'t handle $realtype type."; | |||
| 445 | } | |||
| 446 | ||||
| 447 | if ($realpack) { # we have a blessed ref | |||
| 448 | $out .= ', ' . _quote($realpack) . ' )'; | |||
| 449 | $out .= '->' . $s->{toaster} . '()' if $s->{toaster} ne ''; | |||
| 450 | $s->{apad} = $blesspad; | |||
| 451 | } | |||
| 452 | $s->{level}--; | |||
| 453 | ||||
| 454 | } | |||
| 455 | else { # simple scalar | |||
| 456 | ||||
| 457 | my $ref = \$_[1]; | |||
| 458 | # first, catalog the scalar | |||
| 459 | if ($name ne '') { | |||
| 460 | $id = format_refaddr($ref); | |||
| 461 | if (exists $s->{seen}{$id}) { | |||
| 462 | if ($s->{seen}{$id}[2]) { | |||
| 463 | $out = $s->{seen}{$id}[0]; | |||
| 464 | #warn "[<$out]\n"; | |||
| 465 | return "\${$out}"; | |||
| 466 | } | |||
| 467 | } | |||
| 468 | else { | |||
| 469 | #warn "[>\\$name]\n"; | |||
| 470 | $s->{seen}{$id} = ["\\$name", $ref]; | |||
| 471 | } | |||
| 472 | } | |||
| 473 | if (ref($ref) eq 'GLOB' or "$ref" =~ /=GLOB\([^()]+\)$/) { # glob | |||
| 474 | my $name = substr($val, 1); | |||
| 475 | if ($name =~ /^[A-Za-z_][\w:]*$/) { | |||
| 476 | $name =~ s/^main::/::/; | |||
| 477 | $sname = $name; | |||
| 478 | } | |||
| 479 | else { | |||
| 480 | $sname = $s->_dump($name, ""); | |||
| 481 | $sname = '{' . $sname . '}'; | |||
| 482 | } | |||
| 483 | if ($s->{purity}) { | |||
| 484 | my $k; | |||
| 485 | local ($s->{level}) = 0; | |||
| 486 | for $k (qw(SCALAR ARRAY HASH)) { | |||
| 487 | my $gval = *$val{$k}; | |||
| 488 | next unless defined $gval; | |||
| 489 | next if $k eq "SCALAR" && ! defined $$gval; # always there | |||
| 490 | ||||
| 491 | # _dump can push into @post, so we hold our place using $postlen | |||
| 492 | my $postlen = scalar @post; | |||
| 493 | $post[$postlen] = "\*$sname = "; | |||
| 494 | local ($s->{apad}) = " " x length($post[$postlen]) if $s->{indent} >= 2; | |||
| 495 | $post[$postlen] .= $s->_dump($gval, "\*$sname\{$k\}"); | |||
| 496 | } | |||
| 497 | } | |||
| 498 | $out .= '*' . $sname; | |||
| 499 | } | |||
| 500 | elsif (!defined($val)) { | |||
| 501 | $out .= "undef"; | |||
| 502 | } | |||
| 503 | elsif ($val =~ /^(?:0|-?[1-9]\d{0,8})\z/) { # safe decimal number | |||
| 504 | $out .= $val; | |||
| 505 | } | |||
| 506 | else { # string | |||
| 507 | if ($s->{useqq} or $val =~ tr/\0-\377//c) { | |||
| 508 | # Fall back to qq if there's Unicode | |||
| 509 | $out .= qquote($val, $s->{useqq}); | |||
| 510 | } | |||
| 511 | else { | |||
| 512 | $out .= _quote($val); | |||
| 513 | } | |||
| 514 | } | |||
| 515 | } | |||
| 516 | if ($id) { | |||
| 517 | # if we made it this far, $id was added to seen list at current | |||
| 518 | # level, so remove it to get deep copies | |||
| 519 | if ($s->{deepcopy}) { | |||
| 520 | delete($s->{seen}{$id}); | |||
| 521 | } | |||
| 522 | elsif ($name) { | |||
| 523 | $s->{seen}{$id}[2] = 1; | |||
| 524 | } | |||
| 525 | } | |||
| 526 | return $out; | |||
| 527 | } | |||
| 528 | ||||
| 529 | # | |||
| 530 | # non-OO style of earlier version | |||
| 531 | # | |||
| 532 | sub Dumper { | |||
| 533 | return Data::Dumper->Dump([@_]); | |||
| 534 | } | |||
| 535 | ||||
| 536 | # compat stub | |||
| 537 | sub DumperX { | |||
| 538 | return Data::Dumper->Dumpxs([@_], []); | |||
| 539 | } | |||
| 540 | ||||
| 541 | sub Dumpf { return Data::Dumper->Dump(@_) } | |||
| 542 | ||||
| 543 | sub Dumpp { print Data::Dumper->Dump(@_) } | |||
| 544 | ||||
| 545 | # | |||
| 546 | # reset the "seen" cache | |||
| 547 | # | |||
| 548 | sub Reset { | |||
| 549 | my($s) = shift; | |||
| 550 | $s->{seen} = {}; | |||
| 551 | return $s; | |||
| 552 | } | |||
| 553 | ||||
| 554 | sub Indent { | |||
| 555 | my($s, $v) = @_; | |||
| 556 | if (defined($v)) { | |||
| 557 | if ($v == 0) { | |||
| 558 | $s->{xpad} = ""; | |||
| 559 | $s->{sep} = ""; | |||
| 560 | } | |||
| 561 | else { | |||
| 562 | $s->{xpad} = " "; | |||
| 563 | $s->{sep} = "\n"; | |||
| 564 | } | |||
| 565 | $s->{indent} = $v; | |||
| 566 | return $s; | |||
| 567 | } | |||
| 568 | else { | |||
| 569 | return $s->{indent}; | |||
| 570 | } | |||
| 571 | } | |||
| 572 | ||||
| 573 | sub Pair { | |||
| 574 | my($s, $v) = @_; | |||
| 575 | defined($v) ? (($s->{pair} = $v), return $s) : $s->{pair}; | |||
| 576 | } | |||
| 577 | ||||
| 578 | sub Pad { | |||
| 579 | my($s, $v) = @_; | |||
| 580 | defined($v) ? (($s->{pad} = $v), return $s) : $s->{pad}; | |||
| 581 | } | |||
| 582 | ||||
| 583 | sub Varname { | |||
| 584 | my($s, $v) = @_; | |||
| 585 | defined($v) ? (($s->{varname} = $v), return $s) : $s->{varname}; | |||
| 586 | } | |||
| 587 | ||||
| 588 | sub Purity { | |||
| 589 | my($s, $v) = @_; | |||
| 590 | defined($v) ? (($s->{purity} = $v), return $s) : $s->{purity}; | |||
| 591 | } | |||
| 592 | ||||
| 593 | sub Useqq { | |||
| 594 | my($s, $v) = @_; | |||
| 595 | defined($v) ? (($s->{useqq} = $v), return $s) : $s->{useqq}; | |||
| 596 | } | |||
| 597 | ||||
| 598 | sub Terse { | |||
| 599 | my($s, $v) = @_; | |||
| 600 | defined($v) ? (($s->{terse} = $v), return $s) : $s->{terse}; | |||
| 601 | } | |||
| 602 | ||||
| 603 | sub Freezer { | |||
| 604 | my($s, $v) = @_; | |||
| 605 | defined($v) ? (($s->{freezer} = $v), return $s) : $s->{freezer}; | |||
| 606 | } | |||
| 607 | ||||
| 608 | sub Toaster { | |||
| 609 | my($s, $v) = @_; | |||
| 610 | defined($v) ? (($s->{toaster} = $v), return $s) : $s->{toaster}; | |||
| 611 | } | |||
| 612 | ||||
| 613 | sub Deepcopy { | |||
| 614 | my($s, $v) = @_; | |||
| 615 | defined($v) ? (($s->{deepcopy} = $v), return $s) : $s->{deepcopy}; | |||
| 616 | } | |||
| 617 | ||||
| 618 | sub Quotekeys { | |||
| 619 | my($s, $v) = @_; | |||
| 620 | defined($v) ? (($s->{quotekeys} = $v), return $s) : $s->{quotekeys}; | |||
| 621 | } | |||
| 622 | ||||
| 623 | sub Bless { | |||
| 624 | my($s, $v) = @_; | |||
| 625 | defined($v) ? (($s->{'bless'} = $v), return $s) : $s->{'bless'}; | |||
| 626 | } | |||
| 627 | ||||
| 628 | sub Maxdepth { | |||
| 629 | my($s, $v) = @_; | |||
| 630 | defined($v) ? (($s->{'maxdepth'} = $v), return $s) : $s->{'maxdepth'}; | |||
| 631 | } | |||
| 632 | ||||
| 633 | sub Useperl { | |||
| 634 | my($s, $v) = @_; | |||
| 635 | defined($v) ? (($s->{'useperl'} = $v), return $s) : $s->{'useperl'}; | |||
| 636 | } | |||
| 637 | ||||
| 638 | sub Sortkeys { | |||
| 639 | my($s, $v) = @_; | |||
| 640 | defined($v) ? (($s->{'sortkeys'} = $v), return $s) : $s->{'sortkeys'}; | |||
| 641 | } | |||
| 642 | ||||
| 643 | sub Deparse { | |||
| 644 | my($s, $v) = @_; | |||
| 645 | defined($v) ? (($s->{'deparse'} = $v), return $s) : $s->{'deparse'}; | |||
| 646 | } | |||
| 647 | ||||
| 648 | # used by qquote below | |||
| 649 | 1 | 5.0e-6 | 5.0e-6 | my %esc = ( |
| 650 | "\a" => "\\a", | |||
| 651 | "\b" => "\\b", | |||
| 652 | "\t" => "\\t", | |||
| 653 | "\n" => "\\n", | |||
| 654 | "\f" => "\\f", | |||
| 655 | "\r" => "\\r", | |||
| 656 | "\e" => "\\e", | |||
| 657 | ); | |||
| 658 | ||||
| 659 | # put a string value in double quotes | |||
| 660 | sub qquote { | |||
| 661 | local($_) = shift; | |||
| 662 | s/([\\\"\@\$])/\\$1/g; | |||
| 663 | 3 | 0.00051 | 0.00017 | my $bytes; { use bytes; $bytes = length } # spent 9µs making 1 call to bytes::import |
| 664 | s/([^\x00-\x7f])/'\x{'.sprintf("%x",ord($1)).'}'/ge if $bytes > length; | |||
| 665 | return qq("$_") unless | |||
| 666 | /[^ !"\#\$%&'()*+,\-.\/0-9:;<=>?\@A-Z[\\\]^_`a-z{|}~]/; # fast exit | |||
| 667 | ||||
| 668 | my $high = shift || ""; | |||
| 669 | s/([\a\b\t\n\f\r\e])/$esc{$1}/g; | |||
| 670 | ||||
| 671 | if (ord('^')==94) { # ascii | |||
| 672 | # no need for 3 digits in escape for these | |||
| 673 | s/([\0-\037])(?!\d)/'\\'.sprintf('%o',ord($1))/eg; | |||
| 674 | s/([\0-\037\177])/'\\'.sprintf('%03o',ord($1))/eg; | |||
| 675 | # all but last branch below not supported --BEHAVIOR SUBJECT TO CHANGE-- | |||
| 676 | if ($high eq "iso8859") { | |||
| 677 | s/([\200-\240])/'\\'.sprintf('%o',ord($1))/eg; | |||
| 678 | } elsif ($high eq "utf8") { | |||
| 679 | # use utf8; | |||
| 680 | # $str =~ s/([^\040-\176])/sprintf "\\x{%04x}", ord($1)/ge; | |||
| 681 | } elsif ($high eq "8bit") { | |||
| 682 | # leave it as it is | |||
| 683 | } else { | |||
| 684 | s/([\200-\377])/'\\'.sprintf('%03o',ord($1))/eg; | |||
| 685 | s/([^\040-\176])/sprintf "\\x{%04x}", ord($1)/ge; | |||
| 686 | } | |||
| 687 | } | |||
| 688 | else { # ebcdic | |||
| 689 | s{([^ !"\#\$%&'()*+,\-.\/0-9:;<=>?\@A-Z[\\\]^_`a-z{|}~])(?!\d)} | |||
| 690 | {my $v = ord($1); '\\'.sprintf(($v <= 037 ? '%o' : '%03o'), $v)}eg; | |||
| 691 | s{([^ !"\#\$%&'()*+,\-.\/0-9:;<=>?\@A-Z[\\\]^_`a-z{|}~])} | |||
| 692 | {'\\'.sprintf('%03o',ord($1))}eg; | |||
| 693 | } | |||
| 694 | ||||
| 695 | return qq("$_"); | |||
| 696 | } | |||
| 697 | ||||
| 698 | # helper sub to sort hash keys in Perl < 5.8.0 where we don't have | |||
| 699 | # access to sortsv() from XS | |||
| 700 | sub _sortkeys { [ sort keys %{$_[0]} ] } | |||
| 701 | ||||
| 702 | 1 | 2.4e-5 | 2.4e-5 | 1; |
| 703 | __END__ | |||
| 704 | ||||
| 705 | =head1 NAME | |||
| 706 | ||||
| 707 | Data::Dumper - stringified perl data structures, suitable for both printing and C<eval> | |||
| 708 | ||||
| 709 | =head1 SYNOPSIS | |||
| 710 | ||||
| 711 | use Data::Dumper; | |||
| 712 | ||||
| 713 | # simple procedural interface | |||
| 714 | print Dumper($foo, $bar); | |||
| 715 | ||||
| 716 | # extended usage with names | |||
| 717 | print Data::Dumper->Dump([$foo, $bar], [qw(foo *ary)]); | |||
| 718 | ||||
| 719 | # configuration variables | |||
| 720 | { | |||
| 721 | local $Data::Dumper::Purity = 1; | |||
| 722 | eval Data::Dumper->Dump([$foo, $bar], [qw(foo *ary)]); | |||
| 723 | } | |||
| 724 | ||||
| 725 | # OO usage | |||
| 726 | $d = Data::Dumper->new([$foo, $bar], [qw(foo *ary)]); | |||
| 727 | ... | |||
| 728 | print $d->Dump; | |||
| 729 | ... | |||
| 730 | $d->Purity(1)->Terse(1)->Deepcopy(1); | |||
| 731 | eval $d->Dump; | |||
| 732 | ||||
| 733 | ||||
| 734 | =head1 DESCRIPTION | |||
| 735 | ||||
| 736 | Given a list of scalars or reference variables, writes out their contents in | |||
| 737 | perl syntax. The references can also be objects. The contents of each | |||
| 738 | variable is output in a single Perl statement. Handles self-referential | |||
| 739 | structures correctly. | |||
| 740 | ||||
| 741 | The return value can be C<eval>ed to get back an identical copy of the | |||
| 742 | original reference structure. | |||
| 743 | ||||
| 744 | Any references that are the same as one of those passed in will be named | |||
| 745 | C<$VAR>I<n> (where I<n> is a numeric suffix), and other duplicate references | |||
| 746 | to substructures within C<$VAR>I<n> will be appropriately labeled using arrow | |||
| 747 | notation. You can specify names for individual values to be dumped if you | |||
| 748 | use the C<Dump()> method, or you can change the default C<$VAR> prefix to | |||
| 749 | something else. See C<$Data::Dumper::Varname> and C<$Data::Dumper::Terse> | |||
| 750 | below. | |||
| 751 | ||||
| 752 | The default output of self-referential structures can be C<eval>ed, but the | |||
| 753 | nested references to C<$VAR>I<n> will be undefined, since a recursive | |||
| 754 | structure cannot be constructed using one Perl statement. You should set the | |||
| 755 | C<Purity> flag to 1 to get additional statements that will correctly fill in | |||
| 756 | these references. Moreover, if C<eval>ed when strictures are in effect, | |||
| 757 | you need to ensure that any variables it accesses are previously declared. | |||
| 758 | ||||
| 759 | In the extended usage form, the references to be dumped can be given | |||
| 760 | user-specified names. If a name begins with a C<*>, the output will | |||
| 761 | describe the dereferenced type of the supplied reference for hashes and | |||
| 762 | arrays, and coderefs. Output of names will be avoided where possible if | |||
| 763 | the C<Terse> flag is set. | |||
| 764 | ||||
| 765 | In many cases, methods that are used to set the internal state of the | |||
| 766 | object will return the object itself, so method calls can be conveniently | |||
| 767 | chained together. | |||
| 768 | ||||
| 769 | Several styles of output are possible, all controlled by setting | |||
| 770 | the C<Indent> flag. See L<Configuration Variables or Methods> below | |||
| 771 | for details. | |||
| 772 | ||||
| 773 | ||||
| 774 | =head2 Methods | |||
| 775 | ||||
| 776 | =over 4 | |||
| 777 | ||||
| 778 | =item I<PACKAGE>->new(I<ARRAYREF [>, I<ARRAYREF]>) | |||
| 779 | ||||
| 780 | Returns a newly created C<Data::Dumper> object. The first argument is an | |||
| 781 | anonymous array of values to be dumped. The optional second argument is an | |||
| 782 | anonymous array of names for the values. The names need not have a leading | |||
| 783 | C<$> sign, and must be comprised of alphanumeric characters. You can begin | |||
| 784 | a name with a C<*> to specify that the dereferenced type must be dumped | |||
| 785 | instead of the reference itself, for ARRAY and HASH references. | |||
| 786 | ||||
| 787 | The prefix specified by C<$Data::Dumper::Varname> will be used with a | |||
| 788 | numeric suffix if the name for a value is undefined. | |||
| 789 | ||||
| 790 | Data::Dumper will catalog all references encountered while dumping the | |||
| 791 | values. Cross-references (in the form of names of substructures in perl | |||
| 792 | syntax) will be inserted at all possible points, preserving any structural | |||
| 793 | interdependencies in the original set of values. Structure traversal is | |||
| 794 | depth-first, and proceeds in order from the first supplied value to | |||
| 795 | the last. | |||
| 796 | ||||
| 797 | =item I<$OBJ>->Dump I<or> I<PACKAGE>->Dump(I<ARRAYREF [>, I<ARRAYREF]>) | |||
| 798 | ||||
| 799 | Returns the stringified form of the values stored in the object (preserving | |||
| 800 | the order in which they were supplied to C<new>), subject to the | |||
| 801 | configuration options below. In a list context, it returns a list | |||
| 802 | of strings corresponding to the supplied values. | |||
| 803 | ||||
| 804 | The second form, for convenience, simply calls the C<new> method on its | |||
| 805 | arguments before dumping the object immediately. | |||
| 806 | ||||
| 807 | =item I<$OBJ>->Seen(I<[HASHREF]>) | |||
| 808 | ||||
| 809 | Queries or adds to the internal table of already encountered references. | |||
| 810 | You must use C<Reset> to explicitly clear the table if needed. Such | |||
| 811 | references are not dumped; instead, their names are inserted wherever they | |||
| 812 | are encountered subsequently. This is useful especially for properly | |||
| 813 | dumping subroutine references. | |||
| 814 | ||||
| 815 | Expects an anonymous hash of name => value pairs. Same rules apply for names | |||
| 816 | as in C<new>. If no argument is supplied, will return the "seen" list of | |||
| 817 | name => value pairs, in a list context. Otherwise, returns the object | |||
| 818 | itself. | |||
| 819 | ||||
| 820 | =item I<$OBJ>->Values(I<[ARRAYREF]>) | |||
| 821 | ||||
| 822 | Queries or replaces the internal array of values that will be dumped. | |||
| 823 | When called without arguments, returns the values. Otherwise, returns the | |||
| 824 | object itself. | |||
| 825 | ||||
| 826 | =item I<$OBJ>->Names(I<[ARRAYREF]>) | |||
| 827 | ||||
| 828 | Queries or replaces the internal array of user supplied names for the values | |||
| 829 | that will be dumped. When called without arguments, returns the names. | |||
| 830 | Otherwise, returns the object itself. | |||
| 831 | ||||
| 832 | =item I<$OBJ>->Reset | |||
| 833 | ||||
| 834 | Clears the internal table of "seen" references and returns the object | |||
| 835 | itself. | |||
| 836 | ||||
| 837 | =back | |||
| 838 | ||||
| 839 | =head2 Functions | |||
| 840 | ||||
| 841 | =over 4 | |||
| 842 | ||||
| 843 | =item Dumper(I<LIST>) | |||
| 844 | ||||
| 845 | Returns the stringified form of the values in the list, subject to the | |||
| 846 | configuration options below. The values will be named C<$VAR>I<n> in the | |||
| 847 | output, where I<n> is a numeric suffix. Will return a list of strings | |||
| 848 | in a list context. | |||
| 849 | ||||
| 850 | =back | |||
| 851 | ||||
| 852 | =head2 Configuration Variables or Methods | |||
| 853 | ||||
| 854 | Several configuration variables can be used to control the kind of output | |||
| 855 | generated when using the procedural interface. These variables are usually | |||
| 856 | C<local>ized in a block so that other parts of the code are not affected by | |||
| 857 | the change. | |||
| 858 | ||||
| 859 | These variables determine the default state of the object created by calling | |||
| 860 | the C<new> method, but cannot be used to alter the state of the object | |||
| 861 | thereafter. The equivalent method names should be used instead to query | |||
| 862 | or set the internal state of the object. | |||
| 863 | ||||
| 864 | The method forms return the object itself when called with arguments, | |||
| 865 | so that they can be chained together nicely. | |||
| 866 | ||||
| 867 | =over 4 | |||
| 868 | ||||
| 869 | =item * | |||
| 870 | ||||
| 871 | $Data::Dumper::Indent I<or> I<$OBJ>->Indent(I<[NEWVAL]>) | |||
| 872 | ||||
| 873 | Controls the style of indentation. It can be set to 0, 1, 2 or 3. Style 0 | |||
| 874 | spews output without any newlines, indentation, or spaces between list | |||
| 875 | items. It is the most compact format possible that can still be called | |||
| 876 | valid perl. Style 1 outputs a readable form with newlines but no fancy | |||
| 877 | indentation (each level in the structure is simply indented by a fixed | |||
| 878 | amount of whitespace). Style 2 (the default) outputs a very readable form | |||
| 879 | which takes into account the length of hash keys (so the hash value lines | |||
| 880 | up). Style 3 is like style 2, but also annotates the elements of arrays | |||
| 881 | with their index (but the comment is on its own line, so array output | |||
| 882 | consumes twice the number of lines). Style 2 is the default. | |||
| 883 | ||||
| 884 | =item * | |||
| 885 | ||||
| 886 | $Data::Dumper::Purity I<or> I<$OBJ>->Purity(I<[NEWVAL]>) | |||
| 887 | ||||
| 888 | Controls the degree to which the output can be C<eval>ed to recreate the | |||
| 889 | supplied reference structures. Setting it to 1 will output additional perl | |||
| 890 | statements that will correctly recreate nested references. The default is | |||
| 891 | 0. | |||
| 892 | ||||
| 893 | =item * | |||
| 894 | ||||
| 895 | $Data::Dumper::Pad I<or> I<$OBJ>->Pad(I<[NEWVAL]>) | |||
| 896 | ||||
| 897 | Specifies the string that will be prefixed to every line of the output. | |||
| 898 | Empty string by default. | |||
| 899 | ||||
| 900 | =item * | |||
| 901 | ||||
| 902 | $Data::Dumper::Varname I<or> I<$OBJ>->Varname(I<[NEWVAL]>) | |||
| 903 | ||||
| 904 | Contains the prefix to use for tagging variable names in the output. The | |||
| 905 | default is "VAR". | |||
| 906 | ||||
| 907 | =item * | |||
| 908 | ||||
| 909 | $Data::Dumper::Useqq I<or> I<$OBJ>->Useqq(I<[NEWVAL]>) | |||
| 910 | ||||
| 911 | When set, enables the use of double quotes for representing string values. | |||
| 912 | Whitespace other than space will be represented as C<[\n\t\r]>, "unsafe" | |||
| 913 | characters will be backslashed, and unprintable characters will be output as | |||
| 914 | quoted octal integers. Since setting this variable imposes a performance | |||
| 915 | penalty, the default is 0. C<Dump()> will run slower if this flag is set, | |||
| 916 | since the fast XSUB implementation doesn't support it yet. | |||
| 917 | ||||
| 918 | =item * | |||
| 919 | ||||
| 920 | $Data::Dumper::Terse I<or> I<$OBJ>->Terse(I<[NEWVAL]>) | |||
| 921 | ||||
| 922 | When set, Data::Dumper will emit single, non-self-referential values as | |||
| 923 | atoms/terms rather than statements. This means that the C<$VAR>I<n> names | |||
| 924 | will be avoided where possible, but be advised that such output may not | |||
| 925 | always be parseable by C<eval>. | |||
| 926 | ||||
| 927 | =item * | |||
| 928 | ||||
| 929 | $Data::Dumper::Freezer I<or> $I<OBJ>->Freezer(I<[NEWVAL]>) | |||
| 930 | ||||
| 931 | Can be set to a method name, or to an empty string to disable the feature. | |||
| 932 | Data::Dumper will invoke that method via the object before attempting to | |||
| 933 | stringify it. This method can alter the contents of the object (if, for | |||
| 934 | instance, it contains data allocated from C), and even rebless it in a | |||
| 935 | different package. The client is responsible for making sure the specified | |||
| 936 | method can be called via the object, and that the object ends up containing | |||
| 937 | only perl data types after the method has been called. Defaults to an empty | |||
| 938 | string. | |||
| 939 | ||||
| 940 | If an object does not support the method specified (determined using | |||
| 941 | UNIVERSAL::can()) then the call will be skipped. If the method dies a | |||
| 942 | warning will be generated. | |||
| 943 | ||||
| 944 | =item * | |||
| 945 | ||||
| 946 | $Data::Dumper::Toaster I<or> $I<OBJ>->Toaster(I<[NEWVAL]>) | |||
| 947 | ||||
| 948 | Can be set to a method name, or to an empty string to disable the feature. | |||
| 949 | Data::Dumper will emit a method call for any objects that are to be dumped | |||
| 950 | using the syntax C<bless(DATA, CLASS)-E<gt>METHOD()>. Note that this means that | |||
| 951 | the method specified will have to perform any modifications required on the | |||
| 952 | object (like creating new state within it, and/or reblessing it in a | |||
| 953 | different package) and then return it. The client is responsible for making | |||
| 954 | sure the method can be called via the object, and that it returns a valid | |||
| 955 | object. Defaults to an empty string. | |||
| 956 | ||||
| 957 | =item * | |||
| 958 | ||||
| 959 | $Data::Dumper::Deepcopy I<or> $I<OBJ>->Deepcopy(I<[NEWVAL]>) | |||
| 960 | ||||
| 961 | Can be set to a boolean value to enable deep copies of structures. | |||
| 962 | Cross-referencing will then only be done when absolutely essential | |||
| 963 | (i.e., to break reference cycles). Default is 0. | |||
| 964 | ||||
| 965 | =item * | |||
| 966 | ||||
| 967 | $Data::Dumper::Quotekeys I<or> $I<OBJ>->Quotekeys(I<[NEWVAL]>) | |||
| 968 | ||||
| 969 | Can be set to a boolean value to control whether hash keys are quoted. | |||
| 970 | A false value will avoid quoting hash keys when it looks like a simple | |||
| 971 | string. Default is 1, which will always enclose hash keys in quotes. | |||
| 972 | ||||
| 973 | =item * | |||
| 974 | ||||
| 975 | $Data::Dumper::Bless I<or> $I<OBJ>->Bless(I<[NEWVAL]>) | |||
| 976 | ||||
| 977 | Can be set to a string that specifies an alternative to the C<bless> | |||
| 978 | builtin operator used to create objects. A function with the specified | |||
| 979 | name should exist, and should accept the same arguments as the builtin. | |||
| 980 | Default is C<bless>. | |||
| 981 | ||||
| 982 | =item * | |||
| 983 | ||||
| 984 | $Data::Dumper::Pair I<or> $I<OBJ>->Pair(I<[NEWVAL]>) | |||
| 985 | ||||
| 986 | Can be set to a string that specifies the separator between hash keys | |||
| 987 | and values. To dump nested hash, array and scalar values to JavaScript, | |||
| 988 | use: C<$Data::Dumper::Pair = ' : ';>. Implementing C<bless> in JavaScript | |||
| 989 | is left as an exercise for the reader. | |||
| 990 | A function with the specified name exists, and accepts the same arguments | |||
| 991 | as the builtin. | |||
| 992 | ||||
| 993 | Default is: C< =E<gt> >. | |||
| 994 | ||||
| 995 | =item * | |||
| 996 | ||||
| 997 | $Data::Dumper::Maxdepth I<or> $I<OBJ>->Maxdepth(I<[NEWVAL]>) | |||
| 998 | ||||
| 999 | Can be set to a positive integer that specifies the depth beyond which | |||
| 1000 | which we don't venture into a structure. Has no effect when | |||
| 1001 | C<Data::Dumper::Purity> is set. (Useful in debugger when we often don't | |||
| 1002 | want to see more than enough). Default is 0, which means there is | |||
| 1003 | no maximum depth. | |||
| 1004 | ||||
| 1005 | =item * | |||
| 1006 | ||||
| 1007 | $Data::Dumper::Useperl I<or> $I<OBJ>->Useperl(I<[NEWVAL]>) | |||
| 1008 | ||||
| 1009 | Can be set to a boolean value which controls whether the pure Perl | |||
| 1010 | implementation of C<Data::Dumper> is used. The C<Data::Dumper> module is | |||
| 1011 | a dual implementation, with almost all functionality written in both | |||
| 1012 | pure Perl and also in XS ('C'). Since the XS version is much faster, it | |||
| 1013 | will always be used if possible. This option lets you override the | |||
| 1014 | default behavior, usually for testing purposes only. Default is 0, which | |||
| 1015 | means the XS implementation will be used if possible. | |||
| 1016 | ||||
| 1017 | =item * | |||
| 1018 | ||||
| 1019 | $Data::Dumper::Sortkeys I<or> $I<OBJ>->Sortkeys(I<[NEWVAL]>) | |||
| 1020 | ||||
| 1021 | Can be set to a boolean value to control whether hash keys are dumped in | |||
| 1022 | sorted order. A true value will cause the keys of all hashes to be | |||
| 1023 | dumped in Perl's default sort order. Can also be set to a subroutine | |||
| 1024 | reference which will be called for each hash that is dumped. In this | |||
| 1025 | case C<Data::Dumper> will call the subroutine once for each hash, | |||
| 1026 | passing it the reference of the hash. The purpose of the subroutine is | |||
| 1027 | to return a reference to an array of the keys that will be dumped, in | |||
| 1028 | the order that they should be dumped. Using this feature, you can | |||
| 1029 | control both the order of the keys, and which keys are actually used. In | |||
| 1030 | other words, this subroutine acts as a filter by which you can exclude | |||
| 1031 | certain keys from being dumped. Default is 0, which means that hash keys | |||
| 1032 | are not sorted. | |||
| 1033 | ||||
| 1034 | =item * | |||
| 1035 | ||||
| 1036 | $Data::Dumper::Deparse I<or> $I<OBJ>->Deparse(I<[NEWVAL]>) | |||
| 1037 | ||||
| 1038 | Can be set to a boolean value to control whether code references are | |||
| 1039 | turned into perl source code. If set to a true value, C<B::Deparse> | |||
| 1040 | will be used to get the source of the code reference. Using this option | |||
| 1041 | will force using the Perl implementation of the dumper, since the fast | |||
| 1042 | XSUB implementation doesn't support it. | |||
| 1043 | ||||
| 1044 | Caution : use this option only if you know that your coderefs will be | |||
| 1045 | properly reconstructed by C<B::Deparse>. | |||
| 1046 | ||||
| 1047 | =back | |||
| 1048 | ||||
| 1049 | =head2 Exports | |||
| 1050 | ||||
| 1051 | =over 4 | |||
| 1052 | ||||
| 1053 | =item Dumper | |||
| 1054 | ||||
| 1055 | =back | |||
| 1056 | ||||
| 1057 | =head1 EXAMPLES | |||
| 1058 | ||||
| 1059 | Run these code snippets to get a quick feel for the behavior of this | |||
| 1060 | module. When you are through with these examples, you may want to | |||
| 1061 | add or change the various configuration variables described above, | |||
| 1062 | to see their behavior. (See the testsuite in the Data::Dumper | |||
| 1063 | distribution for more examples.) | |||
| 1064 | ||||
| 1065 | ||||
| 1066 | use Data::Dumper; | |||
| 1067 | ||||
| 1068 | package Foo; | |||
| 1069 | sub new {bless {'a' => 1, 'b' => sub { return "foo" }}, $_[0]}; | |||
| 1070 | ||||
| 1071 | package Fuz; # a weird REF-REF-SCALAR object | |||
| 1072 | sub new {bless \($_ = \ 'fu\'z'), $_[0]}; | |||
| 1073 | ||||
| 1074 | package main; | |||
| 1075 | $foo = Foo->new; | |||
| 1076 | $fuz = Fuz->new; | |||
| 1077 | $boo = [ 1, [], "abcd", \*foo, | |||
| 1078 | {1 => 'a', 023 => 'b', 0x45 => 'c'}, | |||
| 1079 | \\"p\q\'r", $foo, $fuz]; | |||
| 1080 | ||||
| 1081 | ######## | |||
| 1082 | # simple usage | |||
| 1083 | ######## | |||
| 1084 | ||||
| 1085 | $bar = eval(Dumper($boo)); | |||
| 1086 | print($@) if $@; | |||
| 1087 | print Dumper($boo), Dumper($bar); # pretty print (no array indices) | |||
| 1088 | ||||
| 1089 | $Data::Dumper::Terse = 1; # don't output names where feasible | |||
| 1090 | $Data::Dumper::Indent = 0; # turn off all pretty print | |||
| 1091 | print Dumper($boo), "\n"; | |||
| 1092 | ||||
| 1093 | $Data::Dumper::Indent = 1; # mild pretty print | |||
| 1094 | print Dumper($boo); | |||
| 1095 | ||||
| 1096 | $Data::Dumper::Indent = 3; # pretty print with array indices | |||
| 1097 | print Dumper($boo); | |||
| 1098 | ||||
| 1099 | $Data::Dumper::Useqq = 1; # print strings in double quotes | |||
| 1100 | print Dumper($boo); | |||
| 1101 | ||||
| 1102 | $Data::Dumper::Pair = " : "; # specify hash key/value separator | |||
| 1103 | print Dumper($boo); | |||
| 1104 | ||||
| 1105 | ||||
| 1106 | ######## | |||
| 1107 | # recursive structures | |||
| 1108 | ######## | |||
| 1109 | ||||
| 1110 | @c = ('c'); | |||
| 1111 | $c = \@c; | |||
| 1112 | $b = {}; | |||
| 1113 | $a = [1, $b, $c]; | |||
| 1114 | $b->{a} = $a; | |||
| 1115 | $b->{b} = $a->[1]; | |||
| 1116 | $b->{c} = $a->[2]; | |||
| 1117 | print Data::Dumper->Dump([$a,$b,$c], [qw(a b c)]); | |||
| 1118 | ||||
| 1119 | ||||
| 1120 | $Data::Dumper::Purity = 1; # fill in the holes for eval | |||
| 1121 | print Data::Dumper->Dump([$a, $b], [qw(*a b)]); # print as @a | |||
| 1122 | print Data::Dumper->Dump([$b, $a], [qw(*b a)]); # print as %b | |||
| 1123 | ||||
| 1124 | ||||
| 1125 | $Data::Dumper::Deepcopy = 1; # avoid cross-refs | |||
| 1126 | print Data::Dumper->Dump([$b, $a], [qw(*b a)]); | |||
| 1127 | ||||
| 1128 | ||||
| 1129 | $Data::Dumper::Purity = 0; # avoid cross-refs | |||
| 1130 | print Data::Dumper->Dump([$b, $a], [qw(*b a)]); | |||
| 1131 | ||||
| 1132 | ######## | |||
| 1133 | # deep structures | |||
| 1134 | ######## | |||
| 1135 | ||||
| 1136 | $a = "pearl"; | |||
| 1137 | $b = [ $a ]; | |||
| 1138 | $c = { 'b' => $b }; | |||
| 1139 | $d = [ $c ]; | |||
| 1140 | $e = { 'd' => $d }; | |||
| 1141 | $f = { 'e' => $e }; | |||
| 1142 | print Data::Dumper->Dump([$f], [qw(f)]); | |||
| 1143 | ||||
| 1144 | $Data::Dumper::Maxdepth = 3; # no deeper than 3 refs down | |||
| 1145 | print Data::Dumper->Dump([$f], [qw(f)]); | |||
| 1146 | ||||
| 1147 | ||||
| 1148 | ######## | |||
| 1149 | # object-oriented usage | |||
| 1150 | ######## | |||
| 1151 | ||||
| 1152 | $d = Data::Dumper->new([$a,$b], [qw(a b)]); | |||
| 1153 | $d->Seen({'*c' => $c}); # stash a ref without printing it | |||
| 1154 | $d->Indent(3); | |||
| 1155 | print $d->Dump; | |||
| 1156 | $d->Reset->Purity(0); # empty the seen cache | |||
| 1157 | print join "----\n", $d->Dump; | |||
| 1158 | ||||
| 1159 | ||||
| 1160 | ######## | |||
| 1161 | # persistence | |||
| 1162 | ######## | |||
| 1163 | ||||
| 1164 | package Foo; | |||
| 1165 | sub new { bless { state => 'awake' }, shift } | |||
| 1166 | sub Freeze { | |||
| 1167 | my $s = shift; | |||
| 1168 | print STDERR "preparing to sleep\n"; | |||
| 1169 | $s->{state} = 'asleep'; | |||
| 1170 | return bless $s, 'Foo::ZZZ'; | |||
| 1171 | } | |||
| 1172 | ||||
| 1173 | package Foo::ZZZ; | |||
| 1174 | sub Thaw { | |||
| 1175 | my $s = shift; | |||
| 1176 | print STDERR "waking up\n"; | |||
| 1177 | $s->{state} = 'awake'; | |||
| 1178 | return bless $s, 'Foo'; | |||
| 1179 | } | |||
| 1180 | ||||
| 1181 | package Foo; | |||
| 1182 | use Data::Dumper; | |||
| 1183 | $a = Foo->new; | |||
| 1184 | $b = Data::Dumper->new([$a], ['c']); | |||
| 1185 | $b->Freezer('Freeze'); | |||
| 1186 | $b->Toaster('Thaw'); | |||
| 1187 | $c = $b->Dump; | |||
| 1188 | print $c; | |||
| 1189 | $d = eval $c; | |||
| 1190 | print Data::Dumper->Dump([$d], ['d']); | |||
| 1191 | ||||
| 1192 | ||||
| 1193 | ######## | |||
| 1194 | # symbol substitution (useful for recreating CODE refs) | |||
| 1195 | ######## | |||
| 1196 | ||||
| 1197 | sub foo { print "foo speaking\n" } | |||
| 1198 | *other = \&foo; | |||
| 1199 | $bar = [ \&other ]; | |||
| 1200 | $d = Data::Dumper->new([\&other,$bar],['*other','bar']); | |||
| 1201 | $d->Seen({ '*foo' => \&foo }); | |||
| 1202 | print $d->Dump; | |||
| 1203 | ||||
| 1204 | ||||
| 1205 | ######## | |||
| 1206 | # sorting and filtering hash keys | |||
| 1207 | ######## | |||
| 1208 | ||||
| 1209 | $Data::Dumper::Sortkeys = \&my_filter; | |||
| 1210 | my $foo = { map { (ord, "$_$_$_") } 'I'..'Q' }; | |||
| 1211 | my $bar = { %$foo }; | |||
| 1212 | my $baz = { reverse %$foo }; | |||
| 1213 | print Dumper [ $foo, $bar, $baz ]; | |||
| 1214 | ||||
| 1215 | sub my_filter { | |||
| 1216 | my ($hash) = @_; | |||
| 1217 | # return an array ref containing the hash keys to dump | |||
| 1218 | # in the order that you want them to be dumped | |||
| 1219 | return [ | |||
| 1220 | # Sort the keys of %$foo in reverse numeric order | |||
| 1221 | $hash eq $foo ? (sort {$b <=> $a} keys %$hash) : | |||
| 1222 | # Only dump the odd number keys of %$bar | |||
| 1223 | $hash eq $bar ? (grep {$_ % 2} keys %$hash) : | |||
| 1224 | # Sort keys in default order for all other hashes | |||
| 1225 | (sort keys %$hash) | |||
| 1226 | ]; | |||
| 1227 | } | |||
| 1228 | ||||
| 1229 | =head1 BUGS | |||
| 1230 | ||||
| 1231 | Due to limitations of Perl subroutine call semantics, you cannot pass an | |||
| 1232 | array or hash. Prepend it with a C<\> to pass its reference instead. This | |||
| 1233 | will be remedied in time, now that Perl has subroutine prototypes. | |||
| 1234 | For now, you need to use the extended usage form, and prepend the | |||
| 1235 | name with a C<*> to output it as a hash or array. | |||
| 1236 | ||||
| 1237 | C<Data::Dumper> cheats with CODE references. If a code reference is | |||
| 1238 | encountered in the structure being processed (and if you haven't set | |||
| 1239 | the C<Deparse> flag), an anonymous subroutine that | |||
| 1240 | contains the string '"DUMMY"' will be inserted in its place, and a warning | |||
| 1241 | will be printed if C<Purity> is set. You can C<eval> the result, but bear | |||
| 1242 | in mind that the anonymous sub that gets created is just a placeholder. | |||
| 1243 | Someday, perl will have a switch to cache-on-demand the string | |||
| 1244 | representation of a compiled piece of code, I hope. If you have prior | |||
| 1245 | knowledge of all the code refs that your data structures are likely | |||
| 1246 | to have, you can use the C<Seen> method to pre-seed the internal reference | |||
| 1247 | table and make the dumped output point to them, instead. See L</EXAMPLES> | |||
| 1248 | above. | |||
| 1249 | ||||
| 1250 | The C<Useqq> and C<Deparse> flags makes Dump() run slower, since the | |||
| 1251 | XSUB implementation does not support them. | |||
| 1252 | ||||
| 1253 | SCALAR objects have the weirdest looking C<bless> workaround. | |||
| 1254 | ||||
| 1255 | Pure Perl version of C<Data::Dumper> escapes UTF-8 strings correctly | |||
| 1256 | only in Perl 5.8.0 and later. | |||
| 1257 | ||||
| 1258 | =head2 NOTE | |||
| 1259 | ||||
| 1260 | Starting from Perl 5.8.1 different runs of Perl will have different | |||
| 1261 | ordering of hash keys. The change was done for greater security, | |||
| 1262 | see L<perlsec/"Algorithmic Complexity Attacks">. This means that | |||
| 1263 | different runs of Perl will have different Data::Dumper outputs if | |||
| 1264 | the data contains hashes. If you need to have identical Data::Dumper | |||
| 1265 | outputs from different runs of Perl, use the environment variable | |||
| 1266 | PERL_HASH_SEED, see L<perlrun/PERL_HASH_SEED>. Using this restores | |||
| 1267 | the old (platform-specific) ordering: an even prettier solution might | |||
| 1268 | be to use the C<Sortkeys> filter of Data::Dumper. | |||
| 1269 | ||||
| 1270 | =head1 AUTHOR | |||
| 1271 | ||||
| 1272 | Gurusamy Sarathy gsar@activestate.com | |||
| 1273 | ||||
| 1274 | Copyright (c) 1996-98 Gurusamy Sarathy. All rights reserved. | |||
| 1275 | This program is free software; you can redistribute it and/or | |||
| 1276 | modify it under the same terms as Perl itself. | |||
| 1277 | ||||
| 1278 | =head1 VERSION | |||
| 1279 | ||||
| 1280 | Version 2.121 (Aug 24 2003) | |||
| 1281 | ||||
| 1282 | =head1 SEE ALSO | |||
| 1283 | ||||
| 1284 | perl(1) | |||
| 1285 | ||||
| 1286 | =cut |