[7909] | 1 | # $Id: Node.pm 7909 2004-08-06 05:11:55Z mdewsnip $
|
---|
| 2 |
|
---|
| 3 | package XML::XPath::Node;
|
---|
| 4 |
|
---|
| 5 | use strict;
|
---|
| 6 | use vars qw(@ISA @EXPORT $AUTOLOAD %EXPORT_TAGS @EXPORT_OK);
|
---|
| 7 | use Exporter;
|
---|
| 8 | use Carp;
|
---|
| 9 | @ISA = ('Exporter');
|
---|
| 10 |
|
---|
| 11 | sub UNKNOWN_NODE () {0;}
|
---|
| 12 | sub ELEMENT_NODE () {1;}
|
---|
| 13 | sub ATTRIBUTE_NODE () {2;}
|
---|
| 14 | sub TEXT_NODE () {3;}
|
---|
| 15 | sub CDATA_SECTION_NODE () {4;}
|
---|
| 16 | sub ENTITY_REFERENCE_NODE () {5;}
|
---|
| 17 | sub ENTITY_NODE () {6;}
|
---|
| 18 | sub PROCESSING_INSTRUCTION_NODE () {7;}
|
---|
| 19 | sub COMMENT_NODE () {8;}
|
---|
| 20 | sub DOCUMENT_NODE () {9;}
|
---|
| 21 | sub DOCUMENT_TYPE_NODE () {10;}
|
---|
| 22 | sub DOCUMENT_FRAGMENT_NODE () {11;}
|
---|
| 23 | sub NOTATION_NODE () {12;}
|
---|
| 24 |
|
---|
| 25 | # Non core DOM stuff
|
---|
| 26 | sub ELEMENT_DECL_NODE () {13;}
|
---|
| 27 | sub ATT_DEF_NODE () {14;}
|
---|
| 28 | sub XML_DECL_NODE () {15;}
|
---|
| 29 | sub ATTLIST_DECL_NODE () {16;}
|
---|
| 30 | sub NAMESPACE_NODE () {17;}
|
---|
| 31 |
|
---|
| 32 | # per-node constants
|
---|
| 33 |
|
---|
| 34 | # All
|
---|
| 35 | sub node_parent () { 0; }
|
---|
| 36 | sub node_pos () { 1; }
|
---|
| 37 | sub node_global_pos () { 2; }
|
---|
| 38 |
|
---|
| 39 | # Element
|
---|
| 40 | sub node_prefix () { 3; }
|
---|
| 41 | sub node_children () { 4; }
|
---|
| 42 | sub node_name () { 5; }
|
---|
| 43 | sub node_attribs () { 6; }
|
---|
| 44 | sub node_namespaces () { 7; }
|
---|
| 45 | sub node_ids () { 8; }
|
---|
| 46 |
|
---|
| 47 | # Char
|
---|
| 48 | sub node_text () { 3; }
|
---|
| 49 |
|
---|
| 50 | # PI
|
---|
| 51 | sub node_target () { 3; }
|
---|
| 52 | sub node_data () { 4; }
|
---|
| 53 |
|
---|
| 54 | # Comment
|
---|
| 55 | sub node_comment () { 3; }
|
---|
| 56 |
|
---|
| 57 | # Attribute
|
---|
| 58 | # sub node_prefix () { 3; }
|
---|
| 59 | sub node_key () { 4; }
|
---|
| 60 | sub node_value () { 5; }
|
---|
| 61 |
|
---|
| 62 | # Namespaces
|
---|
| 63 | # sub node_prefix () { 3; }
|
---|
| 64 | sub node_expanded () { 4; }
|
---|
| 65 |
|
---|
| 66 | @EXPORT = qw(
|
---|
| 67 | UNKNOWN_NODE
|
---|
| 68 | ELEMENT_NODE
|
---|
| 69 | ATTRIBUTE_NODE
|
---|
| 70 | TEXT_NODE
|
---|
| 71 | CDATA_SECTION_NODE
|
---|
| 72 | ENTITY_REFERENCE_NODE
|
---|
| 73 | ENTITY_NODE
|
---|
| 74 | PROCESSING_INSTRUCTION_NODE
|
---|
| 75 | COMMENT_NODE
|
---|
| 76 | DOCUMENT_NODE
|
---|
| 77 | DOCUMENT_TYPE_NODE
|
---|
| 78 | DOCUMENT_FRAGMENT_NODE
|
---|
| 79 | NOTATION_NODE
|
---|
| 80 | ELEMENT_DECL_NODE
|
---|
| 81 | ATT_DEF_NODE
|
---|
| 82 | XML_DECL_NODE
|
---|
| 83 | ATTLIST_DECL_NODE
|
---|
| 84 | NAMESPACE_NODE
|
---|
| 85 | );
|
---|
| 86 |
|
---|
| 87 | @EXPORT_OK = qw(
|
---|
| 88 | node_parent
|
---|
| 89 | node_pos
|
---|
| 90 | node_global_pos
|
---|
| 91 | node_prefix
|
---|
| 92 | node_children
|
---|
| 93 | node_name
|
---|
| 94 | node_attribs
|
---|
| 95 | node_namespaces
|
---|
| 96 | node_text
|
---|
| 97 | node_target
|
---|
| 98 | node_data
|
---|
| 99 | node_comment
|
---|
| 100 | node_key
|
---|
| 101 | node_value
|
---|
| 102 | node_expanded
|
---|
| 103 | node_ids
|
---|
| 104 | );
|
---|
| 105 |
|
---|
| 106 | %EXPORT_TAGS = (
|
---|
| 107 | 'node_keys' => [
|
---|
| 108 | qw(
|
---|
| 109 | node_parent
|
---|
| 110 | node_pos
|
---|
| 111 | node_global_pos
|
---|
| 112 | node_prefix
|
---|
| 113 | node_children
|
---|
| 114 | node_name
|
---|
| 115 | node_attribs
|
---|
| 116 | node_namespaces
|
---|
| 117 | node_text
|
---|
| 118 | node_target
|
---|
| 119 | node_data
|
---|
| 120 | node_comment
|
---|
| 121 | node_key
|
---|
| 122 | node_value
|
---|
| 123 | node_expanded
|
---|
| 124 | node_ids
|
---|
| 125 | ), @EXPORT,
|
---|
| 126 | ],
|
---|
| 127 | );
|
---|
| 128 |
|
---|
| 129 |
|
---|
| 130 | my $global_pos = 0;
|
---|
| 131 |
|
---|
| 132 | sub nextPos {
|
---|
| 133 | my $class = shift;
|
---|
| 134 | return $global_pos += 5;
|
---|
| 135 | }
|
---|
| 136 |
|
---|
| 137 | sub resetPos {
|
---|
| 138 | $global_pos = 0;
|
---|
| 139 | }
|
---|
| 140 |
|
---|
| 141 | my %DecodeDefaultEntity =
|
---|
| 142 | (
|
---|
| 143 | '"' => """,
|
---|
| 144 | ">" => ">",
|
---|
| 145 | "<" => "<",
|
---|
| 146 | "'" => "'",
|
---|
| 147 | "&" => "&"
|
---|
| 148 | );
|
---|
| 149 |
|
---|
| 150 | sub XMLescape {
|
---|
| 151 | my ($str, $default) = @_;
|
---|
| 152 | return undef unless defined $str;
|
---|
| 153 | $default ||= '';
|
---|
| 154 |
|
---|
| 155 | if ($XML::XPath::EncodeUtf8AsEntity) {
|
---|
| 156 | $str =~ s/([\xC0-\xDF].|[\xE0-\xEF]..|[\xF0-\xFF]...)|([$default])|(]]>)/
|
---|
| 157 | defined($1) ? XmlUtf8Decode ($1) :
|
---|
| 158 | defined ($2) ? $DecodeDefaultEntity{$2} : "]]>" /egsx;
|
---|
| 159 | }
|
---|
| 160 | else {
|
---|
| 161 | $str =~ s/([$default])|(]]>)/
|
---|
| 162 | defined ($1) ? $DecodeDefaultEntity{$1} : ']]>' /gsex;
|
---|
| 163 | }
|
---|
| 164 |
|
---|
| 165 | #?? could there be references that should not be expanded?
|
---|
| 166 | # e.g. should not replace &#nn; ¯ and &abc;
|
---|
| 167 | # $str =~ s/&(?!($ReName|#[0-9]+|#x[0-9a-fA-F]+);)/&/go;
|
---|
| 168 |
|
---|
| 169 | $str;
|
---|
| 170 | }
|
---|
| 171 |
|
---|
| 172 | #
|
---|
| 173 | # Opposite of XmlUtf8Decode plus it adds prefix "&#" or "&#x" and suffix ";"
|
---|
| 174 | # The 2nd parameter ($hex) indicates whether the result is hex encoded or not.
|
---|
| 175 | #
|
---|
| 176 | sub XmlUtf8Decode
|
---|
| 177 | {
|
---|
| 178 | my ($str, $hex) = @_;
|
---|
| 179 | my $len = length ($str);
|
---|
| 180 | my $n;
|
---|
| 181 |
|
---|
| 182 | if ($len == 2) {
|
---|
| 183 | my @n = unpack "C2", $str;
|
---|
| 184 | $n = (($n[0] & 0x3f) << 6) + ($n[1] & 0x3f);
|
---|
| 185 | }
|
---|
| 186 | elsif ($len == 3) {
|
---|
| 187 | my @n = unpack "C3", $str;
|
---|
| 188 | $n = (($n[0] & 0x1f) << 12) + (($n[1] & 0x3f) << 6) +
|
---|
| 189 | ($n[2] & 0x3f);
|
---|
| 190 | }
|
---|
| 191 | elsif ($len == 4) {
|
---|
| 192 | my @n = unpack "C4", $str;
|
---|
| 193 | $n = (($n[0] & 0x0f) << 18) + (($n[1] & 0x3f) << 12) +
|
---|
| 194 | (($n[2] & 0x3f) << 6) + ($n[3] & 0x3f);
|
---|
| 195 | }
|
---|
| 196 | elsif ($len == 1) { # just to be complete...
|
---|
| 197 | $n = ord ($str);
|
---|
| 198 | }
|
---|
| 199 | else {
|
---|
| 200 | die "bad value [$str] for XmlUtf8Decode";
|
---|
| 201 | }
|
---|
| 202 | $hex ? sprintf ("&#x%x;", $n) : "&#$n;";
|
---|
| 203 | }
|
---|
| 204 |
|
---|
| 205 | sub new {
|
---|
| 206 | my $class = shift;
|
---|
| 207 | no strict 'refs';
|
---|
| 208 | my $impl = $class . "Impl";
|
---|
| 209 | my $this = $impl->new(@_);
|
---|
| 210 | if ($XML::XPath::SafeMode) {
|
---|
| 211 | return $this;
|
---|
| 212 | }
|
---|
| 213 | my $self = \$this;
|
---|
| 214 | return bless $self, $class;
|
---|
| 215 | }
|
---|
| 216 |
|
---|
| 217 | sub AUTOLOAD {
|
---|
| 218 | my $method = $AUTOLOAD;
|
---|
| 219 | $method =~ s/.*:://;
|
---|
| 220 | # warn "AUTOLOAD $method!\n";
|
---|
| 221 | no strict 'refs';
|
---|
| 222 | *{$AUTOLOAD} = sub {
|
---|
| 223 | my $self = shift;
|
---|
| 224 | my $olderror = $@; # store previous exceptions
|
---|
| 225 | my $obj = eval { $$self };
|
---|
| 226 | if ($@) {
|
---|
| 227 | if ($@ =~ /Not a SCALAR reference/) {
|
---|
| 228 | croak("No such method $method in " . ref($self));
|
---|
| 229 | }
|
---|
| 230 | croak $@;
|
---|
| 231 | }
|
---|
| 232 | if ($obj) {
|
---|
| 233 | # make sure $@ propogates if this method call was the result
|
---|
| 234 | # of losing scope because of a die().
|
---|
| 235 | if ($method =~ /^(DESTROY|del_parent_link)$/) {
|
---|
| 236 | $obj->$method(@_);
|
---|
| 237 | $@ = $olderror if $olderror;
|
---|
| 238 | return;
|
---|
| 239 | }
|
---|
| 240 | return $obj->$method(@_);
|
---|
| 241 | }
|
---|
| 242 | };
|
---|
| 243 | goto &$AUTOLOAD;
|
---|
| 244 | }
|
---|
| 245 |
|
---|
| 246 | package XML::XPath::NodeImpl;
|
---|
| 247 |
|
---|
| 248 | use vars qw/@ISA $AUTOLOAD/;
|
---|
| 249 | @ISA = ('XML::XPath::Node');
|
---|
| 250 |
|
---|
| 251 | sub new {
|
---|
| 252 | die "Virtual base method";
|
---|
| 253 | }
|
---|
| 254 |
|
---|
| 255 | sub getNodeType {
|
---|
| 256 | my $self = shift;
|
---|
| 257 | return XML::XPath::Node::UNKNOWN_NODE;
|
---|
| 258 | }
|
---|
| 259 |
|
---|
| 260 | sub isElementNode {}
|
---|
| 261 | sub isAttributeNode {}
|
---|
| 262 | sub isNamespaceNode {}
|
---|
| 263 | sub isTextNode {}
|
---|
| 264 | sub isProcessingInstructionNode {}
|
---|
| 265 | sub isPINode {}
|
---|
| 266 | sub isCommentNode {}
|
---|
| 267 |
|
---|
| 268 | sub getNodeValue {
|
---|
| 269 | return;
|
---|
| 270 | }
|
---|
| 271 |
|
---|
| 272 | sub getValue {
|
---|
| 273 | shift->getNodeValue(@_);
|
---|
| 274 | }
|
---|
| 275 |
|
---|
| 276 | sub setNodeValue {
|
---|
| 277 | return;
|
---|
| 278 | }
|
---|
| 279 |
|
---|
| 280 | sub setValue {
|
---|
| 281 | shift->setNodeValue(@_);
|
---|
| 282 | }
|
---|
| 283 |
|
---|
| 284 | sub getParentNode {
|
---|
| 285 | my $self = shift;
|
---|
| 286 | return $self->[XML::XPath::Node::node_parent];
|
---|
| 287 | }
|
---|
| 288 |
|
---|
| 289 | sub getRootNode {
|
---|
| 290 | my $self = shift;
|
---|
| 291 | while (my $parent = $self->getParentNode) {
|
---|
| 292 | $self = $parent;
|
---|
| 293 | }
|
---|
| 294 | return $self;
|
---|
| 295 | }
|
---|
| 296 |
|
---|
| 297 | sub getElementById {
|
---|
| 298 | my $self = shift;
|
---|
| 299 | my ($id) = @_;
|
---|
| 300 | # warn "getElementById: $id\n";
|
---|
| 301 | my $root = $self->getRootNode;
|
---|
| 302 | my $node = $root->[XML::XPath::Node::node_ids]{$id};
|
---|
| 303 | # warn "returning node: ", $node->getName, "\n";
|
---|
| 304 | return $node;
|
---|
| 305 | }
|
---|
| 306 |
|
---|
| 307 | sub getName { }
|
---|
| 308 | sub getData { }
|
---|
| 309 |
|
---|
| 310 | sub getChildNodes {
|
---|
| 311 | return wantarray ? () : [];
|
---|
| 312 | }
|
---|
| 313 |
|
---|
| 314 | sub getChildNode {
|
---|
| 315 | return;
|
---|
| 316 | }
|
---|
| 317 |
|
---|
| 318 | sub getAttribute {
|
---|
| 319 | return;
|
---|
| 320 | }
|
---|
| 321 |
|
---|
| 322 | sub getAttributes {
|
---|
| 323 | return wantarray ? () : [];
|
---|
| 324 | }
|
---|
| 325 |
|
---|
| 326 | sub getAttributeNodes {
|
---|
| 327 | shift->getAttributes(@_);
|
---|
| 328 | }
|
---|
| 329 |
|
---|
| 330 | sub getNamespaceNodes {
|
---|
| 331 | return wantarray ? () : [];
|
---|
| 332 | }
|
---|
| 333 |
|
---|
| 334 | sub getNamespace {
|
---|
| 335 | return;
|
---|
| 336 | }
|
---|
| 337 |
|
---|
| 338 | sub getLocalName {
|
---|
| 339 | return;
|
---|
| 340 | }
|
---|
| 341 |
|
---|
| 342 | sub string_value { return; }
|
---|
| 343 |
|
---|
| 344 | sub get_pos {
|
---|
| 345 | my $self = shift;
|
---|
| 346 | return $self->[XML::XPath::Node::node_pos];
|
---|
| 347 | }
|
---|
| 348 |
|
---|
| 349 | sub set_pos {
|
---|
| 350 | my $self = shift;
|
---|
| 351 | $self->[XML::XPath::Node::node_pos] = shift;
|
---|
| 352 | }
|
---|
| 353 |
|
---|
| 354 | sub get_global_pos {
|
---|
| 355 | my $self = shift;
|
---|
| 356 | return $self->[XML::XPath::Node::node_global_pos];
|
---|
| 357 | }
|
---|
| 358 |
|
---|
| 359 | sub set_global_pos {
|
---|
| 360 | my $self = shift;
|
---|
| 361 | $self->[XML::XPath::Node::node_global_pos] = shift;
|
---|
| 362 | }
|
---|
| 363 |
|
---|
| 364 | sub renumber {
|
---|
| 365 | my $self = shift;
|
---|
| 366 | my $search = shift;
|
---|
| 367 | my $diff = shift;
|
---|
| 368 |
|
---|
| 369 | foreach my $node ($self->findnodes($search)) {
|
---|
| 370 | $node->set_global_pos(
|
---|
| 371 | $node->get_global_pos + $diff
|
---|
| 372 | );
|
---|
| 373 | }
|
---|
| 374 | }
|
---|
| 375 |
|
---|
| 376 | sub insertAfter {
|
---|
| 377 | my $self = shift;
|
---|
| 378 | my $newnode = shift;
|
---|
| 379 | my $posnode = shift;
|
---|
| 380 |
|
---|
| 381 | my $pos_number = eval { $posnode->[XML::XPath::Node::node_children][-1]->get_global_pos() + 1; };
|
---|
| 382 | if (!defined $pos_number) {
|
---|
| 383 | $pos_number = $posnode->get_global_pos() + 1;
|
---|
| 384 | }
|
---|
| 385 |
|
---|
| 386 | eval {
|
---|
| 387 | if ($pos_number ==
|
---|
| 388 | $posnode->findnodes(
|
---|
| 389 | 'following::node()'
|
---|
| 390 | )->get_node(1)->get_global_pos()) {
|
---|
| 391 | $posnode->renumber('following::node()', +5);
|
---|
| 392 | }
|
---|
| 393 | };
|
---|
| 394 |
|
---|
| 395 | my $pos = $posnode->get_pos;
|
---|
| 396 |
|
---|
| 397 | $newnode->setParentNode($self);
|
---|
| 398 | splice @{$self->[XML::XPath::Node::node_children]}, $pos + 1, 0, $newnode;
|
---|
| 399 |
|
---|
| 400 | for (my $i = $pos + 1; $i < @{$self->[XML::XPath::Node::node_children]}; $i++) {
|
---|
| 401 | $self->[XML::XPath::Node::node_children][$i]->set_pos($i);
|
---|
| 402 | }
|
---|
| 403 |
|
---|
| 404 | $newnode->set_global_pos($pos_number);
|
---|
| 405 | }
|
---|
| 406 |
|
---|
| 407 | sub insertBefore {
|
---|
| 408 | my $self = shift;
|
---|
| 409 | my $newnode = shift;
|
---|
| 410 | my $posnode = shift;
|
---|
| 411 |
|
---|
| 412 | my $pos_number = ($posnode->getPreviousSibling() || $posnode->getParentNode)->get_global_pos();
|
---|
| 413 | if ($pos_number == $posnode->get_global_pos()) {
|
---|
| 414 | $posnode->renumber('self::node() | descendant::node() | following::node()', +5);
|
---|
| 415 | }
|
---|
| 416 |
|
---|
| 417 | my $pos = $posnode->get_pos;
|
---|
| 418 |
|
---|
| 419 | $newnode->setParentNode($self);
|
---|
| 420 | splice @{$self->[XML::XPath::Node::node_children]}, $pos, 0, $newnode;
|
---|
| 421 |
|
---|
| 422 | for (my $i = $pos; $i < @{$self->[XML::XPath::Node::node_children]}; $i++) {
|
---|
| 423 | $self->[XML::XPath::Node::node_children][$i]->set_pos($i);
|
---|
| 424 | }
|
---|
| 425 |
|
---|
| 426 | $newnode->set_global_pos($pos_number);
|
---|
| 427 | }
|
---|
| 428 |
|
---|
| 429 | sub getPreviousSibling {
|
---|
| 430 | my $self = shift;
|
---|
| 431 | my $pos = $self->[XML::XPath::Node::node_pos];
|
---|
| 432 | return unless $self->[XML::XPath::Node::node_parent];
|
---|
| 433 | return $self->[XML::XPath::Node::node_parent]->getChildNode($pos);
|
---|
| 434 | }
|
---|
| 435 |
|
---|
| 436 | sub getNextSibling {
|
---|
| 437 | my $self = shift;
|
---|
| 438 | my $pos = $self->[XML::XPath::Node::node_pos];
|
---|
| 439 | return unless $self->[XML::XPath::Node::node_parent];
|
---|
| 440 | return $self->[XML::XPath::Node::node_parent]->getChildNode($pos + 2);
|
---|
| 441 | }
|
---|
| 442 |
|
---|
| 443 | sub setParentNode {
|
---|
| 444 | my $self = shift;
|
---|
| 445 | my $parent = shift;
|
---|
| 446 | # warn "SetParent of ", ref($self), " to ", $parent->[XML::XPath::Node::node_name], "\n";
|
---|
| 447 | $self->[XML::XPath::Node::node_parent] = $parent;
|
---|
| 448 | }
|
---|
| 449 |
|
---|
| 450 | sub del_parent_link {
|
---|
| 451 | my $self = shift;
|
---|
| 452 | $self->[XML::XPath::Node::node_parent] = undef;
|
---|
| 453 | }
|
---|
| 454 |
|
---|
| 455 | sub dispose {
|
---|
| 456 | my $self = shift;
|
---|
| 457 | foreach my $kid ($self->getChildNodes) {
|
---|
| 458 | $kid->dispose;
|
---|
| 459 | }
|
---|
| 460 | foreach my $kid ($self->getAttributeNodes) {
|
---|
| 461 | $kid->dispose;
|
---|
| 462 | }
|
---|
| 463 | foreach my $kid ($self->getNamespaceNodes) {
|
---|
| 464 | $kid->dispose;
|
---|
| 465 | }
|
---|
| 466 | $self->[XML::XPath::Node::node_parent] = undef;
|
---|
| 467 | }
|
---|
| 468 |
|
---|
| 469 | sub to_number {
|
---|
| 470 | my $num = shift->string_value;
|
---|
| 471 | return XML::XPath::Number->new($num);
|
---|
| 472 | }
|
---|
| 473 |
|
---|
| 474 | sub find {
|
---|
| 475 | my $node = shift;
|
---|
| 476 | my ($path) = @_;
|
---|
| 477 | my $xp = XML::XPath->new(); # new is v. lightweight
|
---|
| 478 | return $xp->find($path, $node);
|
---|
| 479 | }
|
---|
| 480 |
|
---|
| 481 | sub findvalue {
|
---|
| 482 | my $node = shift;
|
---|
| 483 | my ($path) = @_;
|
---|
| 484 | my $xp = XML::XPath->new();
|
---|
| 485 | return $xp->findvalue($path, $node);
|
---|
| 486 | }
|
---|
| 487 |
|
---|
| 488 | sub findnodes {
|
---|
| 489 | my $node = shift;
|
---|
| 490 | my ($path) = @_;
|
---|
| 491 | my $xp = XML::XPath->new();
|
---|
| 492 | return $xp->findnodes($path, $node);
|
---|
| 493 | }
|
---|
| 494 |
|
---|
| 495 | sub matches {
|
---|
| 496 | my $node = shift;
|
---|
| 497 | my ($path, $context) = @_;
|
---|
| 498 | my $xp = XML::XPath->new();
|
---|
| 499 | return $xp->matches($node, $path, $context);
|
---|
| 500 | }
|
---|
| 501 |
|
---|
| 502 | sub to_sax {
|
---|
| 503 | my $self = shift;
|
---|
| 504 | unshift @_, 'Handler' if @_ == 1;
|
---|
| 505 | my %handlers = @_;
|
---|
| 506 |
|
---|
| 507 | my $doch = $handlers{DocumentHandler} || $handlers{Handler};
|
---|
| 508 | my $dtdh = $handlers{DTDHandler} || $handlers{Handler};
|
---|
| 509 | my $enth = $handlers{EntityResolver} || $handlers{Handler};
|
---|
| 510 |
|
---|
| 511 | $self->_to_sax ($doch, $dtdh, $enth);
|
---|
| 512 | }
|
---|
| 513 |
|
---|
| 514 | sub DESTROY {}
|
---|
| 515 |
|
---|
| 516 | use Carp;
|
---|
| 517 |
|
---|
| 518 | sub _to_sax {
|
---|
| 519 | carp "_to_sax not implemented in ", ref($_[0]);
|
---|
| 520 | }
|
---|
| 521 |
|
---|
| 522 | 1;
|
---|
| 523 | __END__
|
---|
| 524 |
|
---|
| 525 | =head1 NAME
|
---|
| 526 |
|
---|
| 527 | XML::XPath::Node - internal representation of a node
|
---|
| 528 |
|
---|
| 529 | =head1 API
|
---|
| 530 |
|
---|
| 531 | The Node API aims to emulate DOM to some extent, however the API
|
---|
| 532 | isn't quite compatible with DOM. This is to ease transition from
|
---|
| 533 | XML::DOM programming to XML::XPath. Compatibility with DOM may
|
---|
| 534 | arise once XML::DOM gets namespace support.
|
---|
| 535 |
|
---|
| 536 | =head2 new
|
---|
| 537 |
|
---|
| 538 | Creates a new node. See the sub-classes for parameters to pass to new().
|
---|
| 539 |
|
---|
| 540 | =head2 getNodeType
|
---|
| 541 |
|
---|
| 542 | Returns one of ELEMENT_NODE, TEXT_NODE, COMMENT_NODE, ATTRIBUTE_NODE,
|
---|
| 543 | PROCESSING_INSTRUCTION_NODE or NAMESPACE_NODE. UNKNOWN_NODE is returned
|
---|
| 544 | if the sub-class doesn't implement getNodeType - but that means
|
---|
| 545 | something is broken! The constants are exported by default from
|
---|
| 546 | XML::XPath::Node. The constants have the same numeric value as the
|
---|
| 547 | XML::DOM versions.
|
---|
| 548 |
|
---|
| 549 | =head2 getParentNode
|
---|
| 550 |
|
---|
| 551 | Returns the parent of this node, or undef if this is the root node. Note
|
---|
| 552 | that the root node is the root node in terms of XPath - not the root
|
---|
| 553 | element node.
|
---|
| 554 |
|
---|
| 555 | =head2 to_sax ( $handler | %handlers )
|
---|
| 556 |
|
---|
| 557 | Generates sax calls to the handler or handlers. See the PerlSAX docs for
|
---|
| 558 | details (not yet implemented correctly).
|
---|
| 559 |
|
---|
| 560 | =head1 MORE INFO
|
---|
| 561 |
|
---|
| 562 | See the sub-classes for the meaning of the rest of the API:
|
---|
| 563 |
|
---|
| 564 | =over 4
|
---|
| 565 |
|
---|
| 566 | =item *
|
---|
| 567 |
|
---|
| 568 | L<XML::XPath::Node::Element>
|
---|
| 569 |
|
---|
| 570 | =item *
|
---|
| 571 |
|
---|
| 572 | L<XML::XPath::Node::Attribute>
|
---|
| 573 |
|
---|
| 574 | =item *
|
---|
| 575 |
|
---|
| 576 | L<XML::XPath::Node::Namespace>
|
---|
| 577 |
|
---|
| 578 | =item *
|
---|
| 579 |
|
---|
| 580 | L<XML::XPath::Node::Text>
|
---|
| 581 |
|
---|
| 582 | =item *
|
---|
| 583 |
|
---|
| 584 | L<XML::XPath::Node::Comment>
|
---|
| 585 |
|
---|
| 586 | =item *
|
---|
| 587 |
|
---|
| 588 | L<XML::XPath::Node::PI>
|
---|
| 589 |
|
---|
| 590 | =back
|
---|
| 591 |
|
---|
| 592 | =cut
|
---|