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LibXML.pm
# $Id$ # # # This is free software, you may use it and distribute it under the same terms as # Perl itself. # # Copyright 2001-2003 AxKit.com Ltd., 2002-2006 Christian Glahn, 2006-2009 Petr Pajas # # package XML::LibXML; use strict; use warnings; use vars qw($VERSION $ABI_VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $skipDTD $skipXMLDeclaration $setTagCompression $MatchCB $ReadCB $OpenCB $CloseCB %PARSER_FLAGS $XML_LIBXML_PARSE_DEFAULTS ); use Carp; use constant XML_XMLNS_NS => 'http://www.w3.org/2000/xmlns/'; use constant XML_XML_NS => 'http://www.w3.org/XML/1998/namespace'; use XML::LibXML::Error; use XML::LibXML::NodeList; use XML::LibXML::XPathContext; use IO::Handle; # for FH reads called as methods BEGIN { $VERSION = "2.0134"; # VERSION TEMPLATE: DO NOT CHANGE $ABI_VERSION = 2; require Exporter; require DynaLoader; @ISA = qw(DynaLoader Exporter); use vars qw($__PROXY_NODE_REGISTRY $__threads_shared $__PROXY_NODE_REGISTRY_MUTEX $__loaded); sub VERSION { my $class = shift; my ($caller) = caller; my $req_abi = $ABI_VERSION; if (UNIVERSAL::can($caller,'REQUIRE_XML_LIBXML_ABI_VERSION')) { $req_abi = $caller->REQUIRE_XML_LIBXML_ABI_VERSION(); } elsif ($caller eq 'XML::LibXSLT') { # XML::LibXSLT without REQUIRE_XML_LIBXML_ABI_VERSION is an old and incompatible version $req_abi = 1; } unless ($req_abi == $ABI_VERSION) { my $ver = @_ ? ' '.$_[0] : ''; die ("This version of $caller requires XML::LibXML$ver (ABI $req_abi), which is incompatible with currently installed XML::LibXML $VERSION (ABI $ABI_VERSION). Please upgrade $caller, XML::LibXML, or both!"); } return $class->UNIVERSAL::VERSION(@_) } #-------------------------------------------------------------------------# # export information # #-------------------------------------------------------------------------# %EXPORT_TAGS = ( all => [qw( XML_ELEMENT_NODE XML_ATTRIBUTE_NODE XML_TEXT_NODE XML_CDATA_SECTION_NODE XML_ENTITY_REF_NODE XML_ENTITY_NODE XML_PI_NODE XML_COMMENT_NODE XML_DOCUMENT_NODE XML_DOCUMENT_TYPE_NODE XML_DOCUMENT_FRAG_NODE XML_NOTATION_NODE XML_HTML_DOCUMENT_NODE XML_DTD_NODE XML_ELEMENT_DECL XML_ATTRIBUTE_DECL XML_ENTITY_DECL XML_NAMESPACE_DECL XML_XINCLUDE_END XML_XINCLUDE_START encodeToUTF8 decodeFromUTF8 XML_XMLNS_NS XML_XML_NS )], libxml => [qw( XML_ELEMENT_NODE XML_ATTRIBUTE_NODE XML_TEXT_NODE XML_CDATA_SECTION_NODE XML_ENTITY_REF_NODE XML_ENTITY_NODE XML_PI_NODE XML_COMMENT_NODE XML_DOCUMENT_NODE XML_DOCUMENT_TYPE_NODE XML_DOCUMENT_FRAG_NODE XML_NOTATION_NODE XML_HTML_DOCUMENT_NODE XML_DTD_NODE XML_ELEMENT_DECL XML_ATTRIBUTE_DECL XML_ENTITY_DECL XML_NAMESPACE_DECL XML_XINCLUDE_END XML_XINCLUDE_START )], encoding => [qw( encodeToUTF8 decodeFromUTF8 )], ns => [qw( XML_XMLNS_NS XML_XML_NS )], ); @EXPORT_OK = ( @{$EXPORT_TAGS{all}}, ); @EXPORT = ( @{$EXPORT_TAGS{all}}, ); #-------------------------------------------------------------------------# # initialization of the global variables # #-------------------------------------------------------------------------# $skipDTD = 0; $skipXMLDeclaration = 0; $setTagCompression = 0; $MatchCB = undef; $ReadCB = undef; $OpenCB = undef; $CloseCB = undef; # if ($threads::threads) { # our $__THREADS_TID = 0; # eval q{ # use threads::shared; # our $__PROXY_NODE_REGISTRY_MUTEX :shared = 0; # }; # die $@ if $@; # } #-------------------------------------------------------------------------# # bootstrapping # #-------------------------------------------------------------------------# bootstrap XML::LibXML $VERSION; undef &AUTOLOAD; *encodeToUTF8 = \&XML::LibXML::Common::encodeToUTF8; *decodeFromUTF8 = \&XML::LibXML::Common::decodeFromUTF8; } # BEGIN #-------------------------------------------------------------------------# # libxml2 node names (see also XML::LibXML::Common # #-------------------------------------------------------------------------# use constant XML_ELEMENT_NODE => 1; use constant XML_ATTRIBUTE_NODE => 2; use constant XML_TEXT_NODE => 3; use constant XML_CDATA_SECTION_NODE => 4; use constant XML_ENTITY_REF_NODE => 5; use constant XML_ENTITY_NODE => 6; use constant XML_PI_NODE => 7; use constant XML_COMMENT_NODE => 8; use constant XML_DOCUMENT_NODE => 9; use constant XML_DOCUMENT_TYPE_NODE => 10; use constant XML_DOCUMENT_FRAG_NODE => 11; use constant XML_NOTATION_NODE => 12; use constant XML_HTML_DOCUMENT_NODE => 13; use constant XML_DTD_NODE => 14; use constant XML_ELEMENT_DECL => 15; use constant XML_ATTRIBUTE_DECL => 16; use constant XML_ENTITY_DECL => 17; use constant XML_NAMESPACE_DECL => 18; use constant XML_XINCLUDE_START => 19; use constant XML_XINCLUDE_END => 20; sub import { my $package=shift; if (grep /^:threads_shared$/, @_) { require threads; if (!defined($__threads_shared)) { if (INIT_THREAD_SUPPORT()) { eval q{ use threads::shared; share($__PROXY_NODE_REGISTRY_MUTEX); }; if ($@) { # something went wrong DISABLE_THREAD_SUPPORT(); # leave the library in a usable state die $@; # and die } $__PROXY_NODE_REGISTRY = XML::LibXML::HashTable->new(); $__threads_shared=1; } else { croak("XML::LibXML or Perl compiled without ithread support!"); } } elsif (!$__threads_shared) { croak("XML::LibXML already loaded without thread support. Too late to enable thread support!"); } } elsif (defined $XML::LibXML::__loaded) { $__threads_shared=0 if not defined $__threads_shared; } __PACKAGE__->export_to_level(1,$package,grep !/^:threads(_shared)?$/,@_); } sub threads_shared_enabled { return $__threads_shared ? 1 : 0; } # if ($threads::threads) { # our $__PROXY_NODE_REGISTRY = XML::LibXML::HashTable->new(); # } #-------------------------------------------------------------------------# # test exact version (up to patch-level) # #-------------------------------------------------------------------------# # # disabled in Debian; cf. https://bugs.debian.org/783610 and # https://rt.cpan.org/Public/Bug/Display.html?id=104156 # #{ # my ($runtime_version) = LIBXML_RUNTIME_VERSION() =~ /^(\d+)/; # if ( $runtime_version < LIBXML_VERSION ) { # warn "Warning: XML::LibXML compiled against libxml2 ".LIBXML_VERSION. # ", but runtime libxml2 is older $runtime_version\n"; # } #} #-------------------------------------------------------------------------# # parser flags # #-------------------------------------------------------------------------# # Copied directly from http://xmlsoft.org/html/libxml-parser.html#xmlParserOption use constant { XML_PARSE_RECOVER => 1, # recover on errors XML_PARSE_NOENT => 2, # substitute entities XML_PARSE_DTDLOAD => 4, # load the external subset XML_PARSE_DTDATTR => 8, # default DTD attributes XML_PARSE_DTDVALID => 16, # validate with the DTD XML_PARSE_NOERROR => 32, # suppress error reports XML_PARSE_NOWARNING => 64, # suppress warning reports XML_PARSE_PEDANTIC => 128, # pedantic error reporting XML_PARSE_NOBLANKS => 256, # remove blank nodes XML_PARSE_SAX1 => 512, # use the SAX1 interface internally XML_PARSE_XINCLUDE => 1024, # Implement XInclude substitution XML_PARSE_NONET => 2048, # Forbid network access XML_PARSE_NODICT => 4096, # Do not reuse the context dictionary XML_PARSE_NSCLEAN => 8192, # remove redundant namespaces declarations XML_PARSE_NOCDATA => 16384, # merge CDATA as text nodes XML_PARSE_NOXINCNODE => 32768, # do not generate XINCLUDE START/END nodes XML_PARSE_COMPACT => 65536, # compact small text nodes; no modification of the tree allowed afterwards # (will possibly crash if you try to modify the tree) XML_PARSE_OLD10 => 131072, # parse using XML-1.0 before update 5 XML_PARSE_NOBASEFIX => 262144, # do not fixup XINCLUDE xml#base uris XML_PARSE_HUGE => 524288, # relax any hardcoded limit from the parser XML_PARSE_OLDSAX => 1048576, # parse using SAX2 interface from before 2.7.0 HTML_PARSE_RECOVER => (1<<0), # suppress error reports HTML_PARSE_NOERROR => (1<<5), # suppress error reports }; $XML_LIBXML_PARSE_DEFAULTS = ( XML_PARSE_NODICT | XML_PARSE_DTDLOAD | XML_PARSE_NOENT ); # this hash is made global so that applications can add names for new # libxml2 parser flags as temporary workaround %PARSER_FLAGS = ( recover => XML_PARSE_RECOVER, expand_entities => XML_PARSE_NOENT, load_ext_dtd => XML_PARSE_DTDLOAD, complete_attributes => XML_PARSE_DTDATTR, validation => XML_PARSE_DTDVALID, suppress_errors => XML_PARSE_NOERROR, suppress_warnings => XML_PARSE_NOWARNING, pedantic_parser => XML_PARSE_PEDANTIC, no_blanks => XML_PARSE_NOBLANKS, expand_xinclude => XML_PARSE_XINCLUDE, xinclude => XML_PARSE_XINCLUDE, no_network => XML_PARSE_NONET, clean_namespaces => XML_PARSE_NSCLEAN, no_cdata => XML_PARSE_NOCDATA, no_xinclude_nodes => XML_PARSE_NOXINCNODE, old10 => XML_PARSE_OLD10, no_base_fix => XML_PARSE_NOBASEFIX, huge => XML_PARSE_HUGE, oldsax => XML_PARSE_OLDSAX, ); my %OUR_FLAGS = ( recover => 'XML_LIBXML_RECOVER', line_numbers => 'XML_LIBXML_LINENUMBERS', URI => 'XML_LIBXML_BASE_URI', base_uri => 'XML_LIBXML_BASE_URI', gdome => 'XML_LIBXML_GDOME', ext_ent_handler => 'ext_ent_handler', ); sub _parser_options { my ($self, $opts) = @_; # currently dictionaries break XML::LibXML memory management my $flags; if (ref($self)) { $flags = ($self->{XML_LIBXML_PARSER_OPTIONS}||0); } else { $flags = $XML_LIBXML_PARSE_DEFAULTS; # safety precaution } my ($key, $value); while (($key,$value) = each %$opts) { my $f = $PARSER_FLAGS{ $key }; if (defined $f) { if ($value) { $flags |= $f } else { $flags &= ~$f; } } elsif ($key eq 'set_parser_flags') { # this can be used to pass flags XML::LibXML does not yet know about $flags |= $value; } elsif ($key eq 'unset_parser_flags') { $flags &= ~$value; } } return $flags; } my %compatibility_flags = ( XML_LIBXML_VALIDATION => 'validation', XML_LIBXML_EXPAND_ENTITIES => 'expand_entities', XML_LIBXML_PEDANTIC => 'pedantic_parser', XML_LIBXML_NONET => 'no_network', XML_LIBXML_EXT_DTD => 'load_ext_dtd', XML_LIBXML_COMPLETE_ATTR => 'complete_attributes', XML_LIBXML_EXPAND_XINCLUDE => 'expand_xinclude', XML_LIBXML_NSCLEAN => 'clean_namespaces', XML_LIBXML_KEEP_BLANKS => 'keep_blanks', XML_LIBXML_LINENUMBERS => 'line_numbers', ); #-------------------------------------------------------------------------# # parser constructor # #-------------------------------------------------------------------------# sub new { my $class = shift; my $self = bless { }, $class; if (@_) { my %opts = (); if (ref($_[0]) eq 'HASH') { %opts = %{$_[0]}; } else { # old interface my %args = @_; %opts=( map { (($compatibility_flags{ $_ }||$_) => $args{ $_ }) } keys %args ); } # parser flags $opts{no_blanks} = !$opts{keep_blanks} if exists($opts{keep_blanks}) and !exists($opts{no_blanks}); for (keys %OUR_FLAGS) { $self->{$OUR_FLAGS{$_}} = delete $opts{$_}; } $class->load_catalog(delete($opts{catalog})) if $opts{catalog}; $self->{XML_LIBXML_PARSER_OPTIONS} = XML::LibXML->_parser_options(\%opts); # store remaining unknown options directly in $self for (keys %opts) { $self->{$_}=$opts{$_} unless exists $PARSER_FLAGS{$_}; } } else { $self->{XML_LIBXML_PARSER_OPTIONS} = $XML_LIBXML_PARSE_DEFAULTS; } if ( defined $self->{Handler} ) { $self->set_handler( $self->{Handler} ); } $self->{_State_} = 0; return $self; } sub _clone { my ($self)=@_; my $new = ref($self)->new({ recover => $self->{XML_LIBXML_RECOVER}, line_numbers => $self->{XML_LIBXML_LINENUMBERS}, base_uri => $self->{XML_LIBXML_BASE_URI}, gdome => $self->{XML_LIBXML_GDOME}, }); # The parser options may contain some options that were zeroed from the # defaults so set_parser_flags won't work here. We need to assign them # explicitly. $new->{XML_LIBXML_PARSER_OPTIONS} = $self->{XML_LIBXML_PARSER_OPTIONS}; $new->input_callbacks($self->input_callbacks()); return $new; } #-------------------------------------------------------------------------# # Threads support methods # #-------------------------------------------------------------------------# # threads doc says CLONE's API may change in future, which would break # an XS method prototype sub CLONE { if ($XML::LibXML::__threads_shared) { XML::LibXML::_CLONE( $_[0] ); } } sub CLONE_SKIP { return $XML::LibXML::__threads_shared ? 0 : 1; } sub __proxy_registry { my ($class)=caller; die "This version of $class uses API of XML::LibXML 1.66 which is not compatible with XML::LibXML $VERSION. Please upgrade $class!\n"; } #-------------------------------------------------------------------------# # DOM Level 2 document constructor # #-------------------------------------------------------------------------# sub createDocument { my $self = shift; if (!@_ or $_[0] =~ m/^\d\.\d$/) { # for backward compatibility return XML::LibXML::Document->new(@_); } else { # DOM API: createDocument(namespaceURI, qualifiedName, doctype?) my $doc = XML::LibXML::Document-> new; my $el = $doc->createElementNS(shift, shift); $doc->setDocumentElement($el); $doc->setExternalSubset(shift) if @_; return $doc; } } #-------------------------------------------------------------------------# # callback functions # #-------------------------------------------------------------------------# sub externalEntityLoader(&) { return _externalEntityLoader($_[0]); } sub input_callbacks { my $self = shift; my $icbclass = shift; if ( defined $icbclass ) { $self->{XML_LIBXML_CALLBACK_STACK} = $icbclass; } return $self->{XML_LIBXML_CALLBACK_STACK}; } sub match_callback { my $self = shift; if ( ref $self ) { if ( scalar @_ ) { $self->{XML_LIBXML_MATCH_CB} = shift; $self->{XML_LIBXML_CALLBACK_STACK} = undef; } return $self->{XML_LIBXML_MATCH_CB}; } else { $MatchCB = shift if scalar @_; return $MatchCB; } } sub read_callback { my $self = shift; if ( ref $self ) { if ( scalar @_ ) { $self->{XML_LIBXML_READ_CB} = shift; $self->{XML_LIBXML_CALLBACK_STACK} = undef; } return $self->{XML_LIBXML_READ_CB}; } else { $ReadCB = shift if scalar @_; return $ReadCB; } } sub close_callback { my $self = shift; if ( ref $self ) { if ( scalar @_ ) { $self->{XML_LIBXML_CLOSE_CB} = shift; $self->{XML_LIBXML_CALLBACK_STACK} = undef; } return $self->{XML_LIBXML_CLOSE_CB}; } else { $CloseCB = shift if scalar @_; return $CloseCB; } } sub open_callback { my $self = shift; if ( ref $self ) { if ( scalar @_ ) { $self->{XML_LIBXML_OPEN_CB} = shift; $self->{XML_LIBXML_CALLBACK_STACK} = undef; } return $self->{XML_LIBXML_OPEN_CB}; } else { $OpenCB = shift if scalar @_; return $OpenCB; } } sub callbacks { my $self = shift; if ( ref $self ) { if (@_) { my ($match, $open, $read, $close) = @_; @{$self}{qw(XML_LIBXML_MATCH_CB XML_LIBXML_OPEN_CB XML_LIBXML_READ_CB XML_LIBXML_CLOSE_CB)} = ($match, $open, $read, $close); $self->{XML_LIBXML_CALLBACK_STACK} = undef; } else { return @{$self}{qw(XML_LIBXML_MATCH_CB XML_LIBXML_OPEN_CB XML_LIBXML_READ_CB XML_LIBXML_CLOSE_CB)}; } } else { if (@_) { ( $MatchCB, $OpenCB, $ReadCB, $CloseCB ) = @_; } else { return ( $MatchCB, $OpenCB, $ReadCB, $CloseCB ); } } } #-------------------------------------------------------------------------# # internal member variable manipulation # #-------------------------------------------------------------------------# sub __parser_option { my ($self, $opt) = @_; if (@_>2) { if ($_[2]) { $self->{XML_LIBXML_PARSER_OPTIONS} |= $opt; return 1; } else { $self->{XML_LIBXML_PARSER_OPTIONS} &= ~$opt; return 0; } } else { return ($self->{XML_LIBXML_PARSER_OPTIONS} & $opt) ? 1 : 0; } } sub option_exists { my ($self,$name)=@_; return ($PARSER_FLAGS{$name} || $OUR_FLAGS{$name}) ? 1 : 0; } sub get_option { my ($self,$name)=@_; my $flag = $OUR_FLAGS{$name}; return $self->{$flag} if $flag; $flag = $PARSER_FLAGS{$name}; return $self->__parser_option($flag) if $flag; warn "XML::LibXML::get_option: unknown parser option $name\n"; return undef; } sub set_option { my ($self,$name,$value)=@_; my $flag = $OUR_FLAGS{$name}; return ($self->{$flag}=$value) if $flag; $flag = $PARSER_FLAGS{$name}; return $self->__parser_option($flag,$value) if $flag; warn "XML::LibXML::get_option: unknown parser option $name\n"; return undef; } sub set_options { my $self=shift; my $opts; if (@_==1 and ref($_[0]) eq 'HASH') { $opts = $_[0]; } elsif (@_ % 2 == 0) { $opts={@_}; } else { croak("Odd number of elements passed to set_options"); } $self->set_option($_=>$opts->{$_}) foreach keys %$opts; return; } sub validation { my $self = shift; return $self->__parser_option(XML_PARSE_DTDVALID,@_); } sub recover { my $self = shift; if (scalar @_) { $self->{XML_LIBXML_RECOVER} = $_[0]; $self->__parser_option(XML_PARSE_RECOVER,@_); } return $self->{XML_LIBXML_RECOVER}; } sub recover_silently { my $self = shift; my $arg = shift; if ( defined($arg) ) { $self->recover(($arg == 1) ? 2 : $arg); } return (($self->recover()||0) == 2) ? 1 : 0; } sub expand_entities { my $self = shift; if (scalar(@_) and $_[0]) { return $self->__parser_option(XML_PARSE_NOENT | XML_PARSE_DTDLOAD,1); } return $self->__parser_option(XML_PARSE_NOENT,@_); } sub keep_blanks { my $self = shift; my @args; # we have to negate the argument and return negated value, since # the actual flag is no_blanks if (scalar @_) { @args=($_[0] ? 0 : 1); } return $self->__parser_option(XML_PARSE_NOBLANKS,@args) ? 0 : 1; } sub pedantic_parser { my $self = shift; return $self->__parser_option(XML_PARSE_PEDANTIC,@_); } sub line_numbers { my $self = shift; $self->{XML_LIBXML_LINENUMBERS} = shift if scalar @_; return $self->{XML_LIBXML_LINENUMBERS}; } sub no_network { my $self = shift; return $self->__parser_option(XML_PARSE_NONET,@_); } sub load_ext_dtd { my $self = shift; return $self->__parser_option(XML_PARSE_DTDLOAD,@_); } sub complete_attributes { my $self = shift; return $self->__parser_option(XML_PARSE_DTDATTR,@_); } sub expand_xinclude { my $self = shift; return $self->__parser_option(XML_PARSE_XINCLUDE,@_); } sub base_uri { my $self = shift; $self->{XML_LIBXML_BASE_URI} = shift if scalar @_; return $self->{XML_LIBXML_BASE_URI}; } sub gdome_dom { my $self = shift; $self->{XML_LIBXML_GDOME} = shift if scalar @_; return $self->{XML_LIBXML_GDOME}; } sub clean_namespaces { my $self = shift; return $self->__parser_option(XML_PARSE_NSCLEAN,@_); } #-------------------------------------------------------------------------# # set the optional SAX(2) handler # #-------------------------------------------------------------------------# sub set_handler { my $self = shift; if ( defined $_[0] ) { $self->{HANDLER} = $_[0]; $self->{SAX_ELSTACK} = []; $self->{SAX} = {State => 0}; } else { # undef SAX handling $self->{SAX_ELSTACK} = []; delete $self->{HANDLER}; delete $self->{SAX}; } } #-------------------------------------------------------------------------# # helper functions # #-------------------------------------------------------------------------# sub _auto_expand { my ( $self, $result, $uri ) = @_; $result->setBaseURI( $uri ) if defined $uri; if ( $self->expand_xinclude ) { $self->{_State_} = 1; eval { $self->processXIncludes($result); }; my $err = $@; $self->{_State_} = 0; if ($err) { $self->_cleanup_callbacks(); $result = undef; croak $err; } } return $result; } sub _init_callbacks { my $self = shift; my $icb = $self->{XML_LIBXML_CALLBACK_STACK}; unless ( defined $icb ) { $self->{XML_LIBXML_CALLBACK_STACK} = XML::LibXML::InputCallback->new(); $icb = $self->{XML_LIBXML_CALLBACK_STACK}; } $icb->init_callbacks($self); } sub _cleanup_callbacks { my $self = shift; $self->{XML_LIBXML_CALLBACK_STACK}->cleanup_callbacks(); } sub __read { read($_[0], $_[1], $_[2]); } sub __write { if ( ref( $_[0] ) ) { $_[0]->write( $_[1], $_[2] ); } else { $_[0]->write( $_[1] ); } } sub load_xml { my $class_or_self = shift; my %args = map { ref($_) eq 'HASH' ? (%$_) : $_ } @_; my $URI = delete($args{URI}); $URI = "$URI" if defined $URI; # stringify in case it is an URI object my $parser; if (ref($class_or_self)) { $parser = $class_or_self->_clone(); $parser->{XML_LIBXML_PARSER_OPTIONS} = $parser->_parser_options(\%args); } else { $parser = $class_or_self->new(\%args); } my $dom; if ( defined $args{location} ) { $dom = $parser->parse_file( "$args{location}" ); } elsif ( defined $args{string} ) { $dom = $parser->parse_string( $args{string}, $URI ); } elsif ( defined $args{IO} ) { $dom = $parser->parse_fh( $args{IO}, $URI ); } else { croak("XML::LibXML->load: specify location, string, or IO"); } return $dom; } sub load_html { my ($class_or_self) = shift; my %args = map { ref($_) eq 'HASH' ? (%$_) : $_ } @_; my $URI = delete($args{URI}); $URI = "$URI" if defined $URI; # stringify in case it is an URI object my $parser; if (ref($class_or_self)) { $parser = $class_or_self->_clone(); } else { $parser = $class_or_self->new(); } my $dom; if ( defined $args{location} ) { $dom = $parser->parse_html_file( "$args{location}", \%args ); } elsif ( defined $args{string} ) { $dom = $parser->parse_html_string( $args{string}, \%args ); } elsif ( defined $args{IO} ) { $dom = $parser->parse_html_fh( $args{IO}, \%args ); } else { croak("XML::LibXML->load: specify location, string, or IO"); } return $dom; } #-------------------------------------------------------------------------# # parsing functions # #-------------------------------------------------------------------------# # all parsing functions handle normal as SAX parsing at the same time. # note that SAX parsing is handled incomplete! use XML::LibXML::SAX for # complete parsing sequences #-------------------------------------------------------------------------# sub parse_string { my $self = shift; croak("parse_string is not a class method! Create a parser object with XML::LibXML->new first!") unless ref $self; croak("parse already in progress") if $self->{_State_}; unless ( defined $_[0] and length $_[0] ) { croak("Empty String"); } $self->{_State_} = 1; my $result; $self->_init_callbacks(); if ( defined $self->{SAX} ) { my $string = shift; $self->{SAX_ELSTACK} = []; eval { $result = $self->_parse_sax_string($string); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } } else { eval { $result = $self->_parse_string( @_ ); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } $result = $self->_auto_expand( $result, $self->{XML_LIBXML_BASE_URI} ); } $self->_cleanup_callbacks(); return $result; } sub parse_fh { my $self = shift; croak("parse_fh is not a class method! Create a parser object with XML::LibXML->new first!") unless ref $self; croak("parse already in progress") if $self->{_State_}; $self->{_State_} = 1; my $result; $self->_init_callbacks(); if ( defined $self->{SAX} ) { $self->{SAX_ELSTACK} = []; eval { $self->_parse_sax_fh( @_ ); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } } else { eval { $result = $self->_parse_fh( @_ ); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } $result = $self->_auto_expand( $result, $self->{XML_LIBXML_BASE_URI} ); } $self->_cleanup_callbacks(); return $result; } sub parse_file { my $self = shift; croak("parse_file is not a class method! Create a parser object with XML::LibXML->new first!") unless ref $self; croak("parse already in progress") if $self->{_State_}; $self->{_State_} = 1; my $result; $self->_init_callbacks(); if ( defined $self->{SAX} ) { $self->{SAX_ELSTACK} = []; eval { $self->_parse_sax_file( @_ ); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } } else { eval { $result = $self->_parse_file(@_); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } $result = $self->_auto_expand( $result ); } $self->_cleanup_callbacks(); return $result; } sub parse_xml_chunk { my $self = shift; # max 2 parameter: # 1: the chunk # 2: the encoding of the string croak("parse_xml_chunk is not a class method! Create a parser object with XML::LibXML->new first!") unless ref $self; croak("parse already in progress") if $self->{_State_}; my $result; unless ( defined $_[0] and length $_[0] ) { croak("Empty String"); } $self->{_State_} = 1; $self->_init_callbacks(); if ( defined $self->{SAX} ) { eval { $self->_parse_sax_xml_chunk( @_ ); # this is required for XML::GenericChunk. # in normal case is_filter is not defined, an thus the parsing # will be terminated. in case of a SAX filter the parsing is not # finished at that state. therefore we must not reset the parsing unless ( $self->{IS_FILTER} ) { $result = $self->{HANDLER}->end_document(); } }; } else { eval { $result = $self->_parse_xml_chunk( @_ ); }; } $self->_cleanup_callbacks(); my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; croak $err; } return $result; } sub parse_balanced_chunk { my $self = shift; $self->_init_callbacks(); my $rv; eval { $rv = $self->parse_xml_chunk( @_ ); }; my $err = $@; $self->_cleanup_callbacks(); if ( $err ) { chomp $err unless ref $err; croak $err; } return $rv } # java style sub processXIncludes { my $self = shift; my $doc = shift; my $opts = shift; my $options = $self->_parser_options($opts); if ( $self->{_State_} != 1 ) { $self->_init_callbacks(); } my $rv; eval { $rv = $self->_processXIncludes($doc || " ", $options); }; my $err = $@; if ( $self->{_State_} != 1 ) { $self->_cleanup_callbacks(); } if ( $err ) { chomp $err unless ref $err; croak $err; } return $rv; } # perl style sub process_xincludes { my $self = shift; my $doc = shift; my $opts = shift; my $options = $self->_parser_options($opts); my $rv; $self->_init_callbacks(); eval { $rv = $self->_processXIncludes($doc || " ", $options); }; my $err = $@; $self->_cleanup_callbacks(); if ( $err ) { chomp $err unless ref $err; croak $@; } return $rv; } #-------------------------------------------------------------------------# # HTML parsing functions # #-------------------------------------------------------------------------# sub _html_options { my ($self,$opts)=@_; $opts = {} unless ref $opts; # return (undef,undef) unless ref $opts; my $flags = 0; { my $recover = exists $opts->{recover} ? $opts->{recover} : $self->recover; if ($recover) { $flags |= HTML_PARSE_RECOVER; if ($recover == 2) { $flags |= HTML_PARSE_NOERROR; } } } $flags |= 4 if $opts->{no_defdtd}; # default is ON: injects DTD as needed $flags |= 32 if exists $opts->{suppress_errors} ? $opts->{suppress_errors} : $self->get_option('suppress_errors'); # This is to fix https://rt.cpan.org/Ticket/Display.html?id=58024 : # <quote> # In XML::LibXML, warnings are not suppressed when specifying the recover # or recover_silently flags as per the following excerpt from the manpage: # </quote> if ($self->recover_silently) { $flags |= 32; } $flags |= 64 if $opts->{suppress_warnings}; $flags |= 128 if exists $opts->{pedantic_parser} ? $opts->{pedantic_parser} : $self->pedantic_parser; $flags |= 256 if exists $opts->{no_blanks} ? $opts->{no_blanks} : !$self->keep_blanks; $flags |= 2048 if exists $opts->{no_network} ? $opts->{no_network} : !$self->no_network; $flags |= 16384 if $opts->{no_cdata}; $flags |= 65536 if $opts->{compact}; # compact small text nodes; no modification # of the tree allowed afterwards # (WILL possibly CRASH IF YOU try to MODIFY THE TREE) $flags |= 524288 if $opts->{huge}; # relax any hardcoded limit from the parser $flags |= 1048576 if $opts->{oldsax}; # parse using SAX2 interface from before 2.7.0 return ($opts->{URI},$opts->{encoding},$flags); } sub parse_html_string { my ($self,$str,$opts) = @_; croak("parse_html_string is not a class method! Create a parser object with XML::LibXML->new first!") unless ref $self; croak("parse already in progress") if $self->{_State_}; unless ( defined $str and length $str ) { croak("Empty String"); } $self->{_State_} = 1; my $result; $self->_init_callbacks(); eval { $result = $self->_parse_html_string( $str, $self->_html_options($opts) ); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } $self->_cleanup_callbacks(); return $result; } sub parse_html_file { my ($self,$file,$opts) = @_; croak("parse_html_file is not a class method! Create a parser object with XML::LibXML->new first!") unless ref $self; croak("parse already in progress") if $self->{_State_}; $self->{_State_} = 1; my $result; $self->_init_callbacks(); eval { $result = $self->_parse_html_file($file, $self->_html_options($opts) ); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } $self->_cleanup_callbacks(); return $result; } sub parse_html_fh { my ($self,$fh,$opts) = @_; croak("parse_html_fh is not a class method! Create a parser object with XML::LibXML->new first!") unless ref $self; croak("parse already in progress") if $self->{_State_}; $self->{_State_} = 1; my $result; $self->_init_callbacks(); eval { $result = $self->_parse_html_fh( $fh, $self->_html_options($opts) ); }; my $err = $@; $self->{_State_} = 0; if ($err) { chomp $err unless ref $err; $self->_cleanup_callbacks(); croak $err; } $self->_cleanup_callbacks(); return $result; } #-------------------------------------------------------------------------# # push parser interface # #-------------------------------------------------------------------------# sub init_push { my $self = shift; if ( defined $self->{CONTEXT} ) { delete $self->{CONTEXT}; } if ( defined $self->{SAX} ) { $self->{CONTEXT} = $self->_start_push(1); } else { $self->{CONTEXT} = $self->_start_push(0); } } sub push { my $self = shift; $self->_init_callbacks(); if ( not defined $self->{CONTEXT} ) { $self->init_push(); } eval { foreach ( @_ ) { $self->_push( $self->{CONTEXT}, $_ ); } }; my $err = $@; $self->_cleanup_callbacks(); if ( $err ) { chomp $err unless ref $err; croak $err; } } # this function should be promoted! # the reason is because libxml2 uses xmlParseChunk() for this purpose! sub parse_chunk { my $self = shift; my $chunk = shift; my $terminate = shift; if ( not defined $self->{CONTEXT} ) { $self->init_push(); } if ( defined $chunk and length $chunk ) { $self->_push( $self->{CONTEXT}, $chunk ); } if ( $terminate ) { return $self->finish_push(); } } sub finish_push { my $self = shift; my $restore = shift || 0; return undef unless defined $self->{CONTEXT}; my $retval; if ( defined $self->{SAX} ) { eval { $self->_end_sax_push( $self->{CONTEXT} ); $retval = $self->{HANDLER}->end_document( {} ); }; } else { eval { $retval = $self->_end_push( $self->{CONTEXT}, $restore ); }; } my $err = $@; delete $self->{CONTEXT}; if ( $err ) { chomp $err unless ref $err; croak( $err ); } return $retval; } 1; #-------------------------------------------------------------------------# # XML::LibXML::Node Interface # #-------------------------------------------------------------------------# package XML::LibXML::Node; use Carp qw(croak); use overload '""' => sub { $_[0]->toString() }, 'bool' => sub { 1 }, '0+' => sub { Scalar::Util::refaddr($_[0]) }, fallback => 1, ; sub CLONE_SKIP { return $XML::LibXML::__threads_shared ? 0 : 1; } sub isSupported { my $self = shift; my $feature = shift; return $self->can($feature) ? 1 : 0; } sub getChildNodes { my $self = shift; return $self->childNodes(); } sub childNodes { my $self = shift; my @children = $self->_childNodes(0); return wantarray ? @children : XML::LibXML::NodeList->new_from_ref(\@children , 1); } sub nonBlankChildNodes { my $self = shift; my @children = $self->_childNodes(1); return wantarray ? @children : XML::LibXML::NodeList->new_from_ref(\@children , 1); } sub attributes { my $self = shift; my @attr = $self->_attributes(); return wantarray ? @attr : XML::LibXML::NamedNodeMap->new( @attr ); } sub findnodes { my ($node, $xpath) = @_; my @nodes = $node->_findnodes($xpath); if (wantarray) { return @nodes; } else { return XML::LibXML::NodeList->new_from_ref(\@nodes, 1); } } sub exists { my ($node, $xpath) = @_; my (undef, $value) = $node->_find($xpath,1); return $value; } sub findvalue { my ($node, $xpath) = @_; my $res; $res = $node->find($xpath); return $res->to_literal->value; } sub findbool { my ($node, $xpath) = @_; my ($type, @params) = $node->_find($xpath,1); if ($type) { return $type->new(@params); } return undef; } sub find { my ($node, $xpath) = @_; my ($type, @params) = $node->_find($xpath,0); if ($type) { return $type->new(@params); } return undef; } sub setOwnerDocument { my ( $self, $doc ) = @_; $doc->adoptNode( $self ); } sub toStringC14N { my ($self, $comments, $xpath, $xpc) = @_; return $self->_toStringC14N( $comments || 0, (defined $xpath ? $xpath : undef), 0, undef, (defined $xpc ? $xpc : undef) ); } { my $C14N_version_1_dot_1_val = 2; sub toStringC14N_v1_1 { my ($self, $comments, $xpath, $xpc) = @_; return $self->_toStringC14N( $comments || 0, (defined $xpath ? $xpath : undef), $C14N_version_1_dot_1_val, undef, (defined $xpc ? $xpc : undef) ); } } sub toStringEC14N { my ($self, $comments, $xpath, $xpc, $inc_prefix_list) = @_; unless (UNIVERSAL::isa($xpc,'XML::LibXML::XPathContext')) { if ($inc_prefix_list) { croak("toStringEC14N: 3rd argument is not an XML::LibXML::XPathContext"); } else { $inc_prefix_list=$xpc; $xpc=undef; } } if (defined($inc_prefix_list) and !UNIVERSAL::isa($inc_prefix_list,'ARRAY')) { croak("toStringEC14N: inclusive_prefix_list must be undefined or ARRAY"); } return $self->_toStringC14N( $comments || 0, (defined $xpath ? $xpath : undef), 1, (defined $inc_prefix_list ? $inc_prefix_list : undef), (defined $xpc ? $xpc : undef) ); } *serialize_c14n = \&toStringC14N; *serialize_exc_c14n = \&toStringEC14N; 1; #-------------------------------------------------------------------------# # XML::LibXML::Document Interface # #-------------------------------------------------------------------------# package XML::LibXML::Document; use vars qw(@ISA); @ISA = ('XML::LibXML::Node'); sub actualEncoding { my $doc = shift; my $enc = $doc->encoding; return (defined $enc and length $enc) ? $enc : 'UTF-8'; } sub setDocumentElement { my $doc = shift; my $element = shift; my $oldelem = $doc->documentElement; if ( defined $oldelem ) { $doc->removeChild($oldelem); } $doc->_setDocumentElement($element); } sub toString { my $self = shift; my $flag = shift; my $retval = ""; if ( defined $XML::LibXML::skipXMLDeclaration and $XML::LibXML::skipXMLDeclaration == 1 ) { foreach ( $self->childNodes ){ next if $_->nodeType == XML::LibXML::XML_DTD_NODE() and $XML::LibXML::skipDTD; $retval .= $_->toString; } } else { $flag ||= 0 unless defined $flag; $retval = $self->_toString($flag); } return $retval; } sub serialize { my $self = shift; return $self->toString( @_ ); } #-------------------------------------------------------------------------# # bad style xinclude processing # #-------------------------------------------------------------------------# sub process_xinclude { my $self = shift; my $opts = shift; XML::LibXML->new->processXIncludes( $self, $opts ); } sub insertProcessingInstruction { my $self = shift; my $target = shift; my $data = shift; my $pi = $self->createPI( $target, $data ); my $root = $self->documentElement; if ( defined $root ) { # this is actually not correct, but i guess it's what the user # intends $self->insertBefore( $pi, $root ); } else { # if no documentElement was found we just append the PI $self->appendChild( $pi ); } } sub insertPI { my $self = shift; $self->insertProcessingInstruction( @_ ); } #-------------------------------------------------------------------------# # DOM L3 Document functions. # added after robins implicit feature request #-------------------------------------------------------------------------# *getElementsByTagName = \&XML::LibXML::Element::getElementsByTagName; *getElementsByTagNameNS = \&XML::LibXML::Element::getElementsByTagNameNS; *getElementsByLocalName = \&XML::LibXML::Element::getElementsByLocalName; 1; #-------------------------------------------------------------------------# # XML::LibXML::DocumentFragment Interface # #-------------------------------------------------------------------------# package XML::LibXML::DocumentFragment; use vars qw(@ISA); @ISA = ('XML::LibXML::Node'); sub toString { my $self = shift; my $retval = ""; if ( $self->hasChildNodes() ) { foreach my $n ( $self->childNodes() ) { $retval .= $n->toString(@_); } } return $retval; } *serialize = \&toString; 1; #-------------------------------------------------------------------------# # XML::LibXML::Element Interface # #-------------------------------------------------------------------------# package XML::LibXML::Element; use vars qw(@ISA); @ISA = ('XML::LibXML::Node'); use XML::LibXML qw(:ns :libxml); use XML::LibXML::AttributeHash; use Carp; use Scalar::Util qw(blessed); use overload '%{}' => 'getAttributeHash', 'eq' => '_isSameNodeLax', '==' => '_isSameNodeLax', 'ne' => '_isNotSameNodeLax', '!=' => '_isNotSameNodeLax', fallback => 1, ; sub _isNotSameNodeLax { my ($self, $other) = @_; return ((not $self->_isSameNodeLax($other)) ? 1 : ''); } sub _isSameNodeLax { my ($self, $other) = @_; if (blessed($other) and $other->isa('XML::LibXML::Element')) { return ($self->isSameNode($other) ? 1 : ''); } else { return ''; } } { my %tiecache; sub __destroy_tiecache { delete $tiecache{ 0+$_[0] }; } sub getAttributeHash { my $self = shift; if (!exists $tiecache{ 0+$self }) { tie my %attr, 'XML::LibXML::AttributeHash', $self, weaken => 1; $tiecache{ 0+$self } = \%attr; } return $tiecache{ 0+$self }; } sub DESTROY { my ($self) = @_; $self->__destroy_tiecache; $self->SUPER::DESTROY; } } sub setNamespace { my $self = shift; my $n = $self->localname; if ( $self->_setNamespace(@_) ){ if ( scalar @_ < 3 || $_[2] == 1 ){ $self->setNodeName( $n ); } return 1; } return 0; } sub getAttribute { my $self = shift; my $name = $_[0]; if ( $name =~ /^xmlns(?::|$)/ ) { # user wants to get a namespace ... (my $prefix = $name )=~s/^xmlns:?//; $self->_getNamespaceDeclURI($prefix); } else { $self->_getAttribute(@_); } } sub setAttribute { my ( $self, $name, $value ) = @_; if ( $name =~ /^xmlns(?::|$)/ ) { # user wants to set the special attribute for declaring XML namespace ... # this is fine but not exactly DOM conformant behavior, btw (according to DOM we should # probably declare an attribute which looks like XML namespace declaration # but isn't) (my $nsprefix = $name )=~s/^xmlns:?//; my $nn = $self->nodeName; if ( $nn =~ /^\Q${nsprefix}\E:/ ) { # the element has the same prefix $self->setNamespaceDeclURI($nsprefix,$value) || $self->setNamespace($value,$nsprefix,1); ## ## We set the namespace here. ## This is helpful, as in: ## ## | $e = XML::LibXML::Element->new('foo:bar'); ## | $e->setAttribute('xmlns:foo','http://yoyodine') ## } else { # just modify the namespace $self->setNamespaceDeclURI($nsprefix, $value) || $self->setNamespace($value,$nsprefix,0); } } else { $self->_setAttribute($name, $value); } } sub getAttributeNS { my $self = shift; my ($nsURI, $name) = @_; croak("invalid attribute name") if !defined($name) or $name eq q{}; if ( defined($nsURI) and $nsURI eq XML_XMLNS_NS ) { $self->_getNamespaceDeclURI($name eq 'xmlns' ? undef : $name); } else { $self->_getAttributeNS(@_); } } sub setAttributeNS { my ($self, $nsURI, $qname, $value)=@_; unless (defined $qname and length $qname) { croak("bad name"); } if (defined($nsURI) and $nsURI eq XML_XMLNS_NS) { if ($qname !~ /^xmlns(?::|$)/) { croak("NAMESPACE ERROR: Namespace declarations must have the prefix 'xmlns'"); } $self->setAttribute($qname,$value); # see implementation above return; } if ($qname=~/:/ and not (defined($nsURI) and length($nsURI))) { croak("NAMESPACE ERROR: Attribute without a prefix cannot be in a namespace"); } if ($qname=~/^xmlns(?:$|:)/) { croak("NAMESPACE ERROR: 'xmlns' prefix and qualified-name are reserved for the namespace ".XML_XMLNS_NS); } if ($qname=~/^xml:/ and not (defined $nsURI and $nsURI eq XML_XML_NS)) { croak("NAMESPACE ERROR: 'xml' prefix is reserved for the namespace ".XML_XML_NS); } $self->_setAttributeNS( defined $nsURI ? $nsURI : undef, $qname, $value ); } sub getElementsByTagName { my ( $node , $name ) = @_; my $xpath = $name eq '*' ? "descendant::*" : "descendant::*[name()='$name']"; my @nodes = $node->_findnodes($xpath); return wantarray ? @nodes : XML::LibXML::NodeList->new_from_ref(\@nodes, 1); } sub getElementsByTagNameNS { my ( $node, $nsURI, $name ) = @_; my $xpath; if ( $name eq '*' ) { if ( $nsURI eq '*' ) { $xpath = "descendant::*"; } else { $xpath = "descendant::*[namespace-uri()='$nsURI']"; } } elsif ( $nsURI eq '*' ) { $xpath = "descendant::*[local-name()='$name']"; } else { $xpath = "descendant::*[local-name()='$name' and namespace-uri()='$nsURI']"; } my @nodes = $node->_findnodes($xpath); return wantarray ? @nodes : XML::LibXML::NodeList->new_from_ref(\@nodes, 1); } sub getElementsByLocalName { my ( $node,$name ) = @_; my $xpath; if ($name eq '*') { $xpath = "descendant::*"; } else { $xpath = "descendant::*[local-name()='$name']"; } my @nodes = $node->_findnodes($xpath); return wantarray ? @nodes : XML::LibXML::NodeList->new_from_ref(\@nodes, 1); } sub getChildrenByTagName { my ( $node, $name ) = @_; my @nodes; if ($name eq '*') { @nodes = grep { $_->nodeType == XML_ELEMENT_NODE() } $node->childNodes(); } else { @nodes = grep { $_->nodeName eq $name } $node->childNodes(); } return wantarray ? @nodes : XML::LibXML::NodeList->new_from_ref(\@nodes, 1); } sub getChildrenByLocalName { my ( $node, $name ) = @_; # my @nodes; # if ($name eq '*') { # @nodes = grep { $_->nodeType == XML_ELEMENT_NODE() } # $node->childNodes(); # } else { # @nodes = grep { $_->nodeType == XML_ELEMENT_NODE() and # $_->localName eq $name } $node->childNodes(); # } # return wantarray ? @nodes : XML::LibXML::NodeList->new_from_ref(\@nodes, 1); my @nodes = $node->_getChildrenByTagNameNS('*',$name); return wantarray ? @nodes : XML::LibXML::NodeList->new_from_ref(\@nodes, 1); } sub getChildrenByTagNameNS { my ( $node, $nsURI, $name ) = @_; my @nodes = $node->_getChildrenByTagNameNS($nsURI,$name); return wantarray ? @nodes : XML::LibXML::NodeList->new_from_ref(\@nodes, 1); } sub appendWellBalancedChunk { my ( $self, $chunk ) = @_; my $local_parser = XML::LibXML->new(); my $frag = $local_parser->parse_xml_chunk( $chunk ); $self->appendChild( $frag ); } 1; #-------------------------------------------------------------------------# # XML::LibXML::Text Interface # #-------------------------------------------------------------------------# package XML::LibXML::Text; use vars qw(@ISA); @ISA = ('XML::LibXML::Node'); sub attributes { return; } sub deleteDataString { my ($node, $string, $all) = @_; return $node->replaceDataString($string, '', $all); } sub replaceDataString { my ( $node, $left_proto, $right,$all ) = @_; # Assure we exchange the strings and not expressions! my $left = quotemeta($left_proto); my $datastr = $node->nodeValue(); if ( $all ) { $datastr =~ s/$left/$right/g; } else{ $datastr =~ s/$left/$right/; } $node->setData( $datastr ); } sub replaceDataRegEx { my ( $node, $leftre, $rightre, $flags ) = @_; return unless defined $leftre; $rightre ||= ""; my $datastr = $node->nodeValue(); my $restr = "s/" . $leftre . "/" . $rightre . "/"; $restr .= $flags if defined $flags; eval '$datastr =~ '. $restr; $node->setData( $datastr ); } 1; package XML::LibXML::Comment; use vars qw(@ISA); @ISA = ('XML::LibXML::Text'); 1; package XML::LibXML::CDATASection; use vars qw(@ISA); @ISA = ('XML::LibXML::Text'); 1; #-------------------------------------------------------------------------# # XML::LibXML::Attribute Interface # #-------------------------------------------------------------------------# package XML::LibXML::Attr; use vars qw( @ISA ) ; @ISA = ('XML::LibXML::Node') ; sub setNamespace { my ($self,$href,$prefix) = @_; my $n = $self->localname; if ( $self->_setNamespace($href,$prefix) ) { $self->setNodeName($n); return 1; } return 0; } 1; #-------------------------------------------------------------------------# # XML::LibXML::Dtd Interface # #-------------------------------------------------------------------------# # this is still under construction # package XML::LibXML::Dtd; use vars qw( @ISA ); @ISA = ('XML::LibXML::Node'); # at least DESTROY and CLONE_SKIP must be inherited 1; #-------------------------------------------------------------------------# # XML::LibXML::PI Interface # #-------------------------------------------------------------------------# package XML::LibXML::PI; use vars qw( @ISA ); @ISA = ('XML::LibXML::Node'); sub setData { my $pi = shift; my $string = ""; if ( scalar @_ == 1 ) { $string = shift; } else { my %h = @_; $string = join " ", map {$_.'="'.$h{$_}.'"'} keys %h; } # the spec says any char but "?>" [17] $pi->_setData( $string ) unless $string =~ /\?>/; } 1; #-------------------------------------------------------------------------# # XML::LibXML::Namespace Interface # #-------------------------------------------------------------------------# package XML::LibXML::Namespace; sub CLONE_SKIP { 1 } # In fact, this is not a node! sub prefix { return "xmlns"; } sub getPrefix { return "xmlns"; } sub getNamespaceURI { return "http://www.w3.org/2000/xmlns/" }; sub getNamespaces { return (); } sub nodeName { my $self = shift; my $nsP = $self->localname; return ( defined($nsP) && length($nsP) ) ? "xmlns:$nsP" : "xmlns"; } sub name { goto &nodeName } sub getName { goto &nodeName } sub isEqualNode { my ( $self, $ref ) = @_; if ( ref($ref) eq "XML::LibXML::Namespace" ) { return $self->_isEqual($ref); } return 0; } sub isSameNode { my ( $self, $ref ) = @_; if ( $$self == $$ref ){ return 1; } return 0; } 1; #-------------------------------------------------------------------------# # XML::LibXML::NamedNodeMap Interface # #-------------------------------------------------------------------------# package XML::LibXML::NamedNodeMap; use XML::LibXML qw(:libxml); sub CLONE_SKIP { return $XML::LibXML::__threads_shared ? 0 : 1; } sub new { my $class = shift; my $self = bless { Nodes => [@_] }, $class; $self->{NodeMap} = { map { $_->nodeName => $_ } @_ }; return $self; } sub length { return scalar( @{$_[0]->{Nodes}} ); } sub nodes { return $_[0]->{Nodes}; } sub item { $_[0]->{Nodes}->[$_[1]]; } sub getNamedItem { my $self = shift; my $name = shift; return $self->{NodeMap}->{$name}; } sub setNamedItem { my $self = shift; my $node = shift; my $retval; if ( defined $node ) { if ( scalar @{$self->{Nodes}} ) { my $name = $node->nodeName(); if ( $node->nodeType() == XML_NAMESPACE_DECL ) { return; } if ( defined $self->{NodeMap}->{$name} ) { if ( $node->isSameNode( $self->{NodeMap}->{$name} ) ) { return; } $retval = $self->{NodeMap}->{$name}->replaceNode( $node ); } else { $self->{Nodes}->[0]->addSibling($node); } $self->{NodeMap}->{$name} = $node; push @{$self->{Nodes}}, $node; } else { # not done yet # can this be properly be done??? warn "not done yet\n"; } } return $retval; } sub removeNamedItem { my $self = shift; my $name = shift; my $retval; if ( $name =~ /^xmlns/ ) { warn "not done yet\n"; } elsif ( exists $self->{NodeMap}->{$name} ) { $retval = $self->{NodeMap}->{$name}; $retval->unbindNode; delete $self->{NodeMap}->{$name}; $self->{Nodes} = [grep {not($retval->isSameNode($_))} @{$self->{Nodes}}]; } return $retval; } sub getNamedItemNS { my $self = shift; my $nsURI = shift; my $name = shift; return undef; } sub setNamedItemNS { my $self = shift; my $nsURI = shift; my $node = shift; return undef; } sub removeNamedItemNS { my $self = shift; my $nsURI = shift; my $name = shift; return undef; } 1; package XML::LibXML::_SAXParser; # this is pseudo class!!! and it will be removed as soon all functions # moved to XS level use XML::SAX::Exception; sub CLONE_SKIP { return $XML::LibXML::__threads_shared ? 0 : 1; } # these functions will use SAX exceptions as soon i know how things really work sub warning { my ( $parser, $message, $line, $col ) = @_; my $error = XML::SAX::Exception::Parse->new( LineNumber => $line, ColumnNumber => $col, Message => $message, ); $parser->{HANDLER}->warning( $error ); } sub error { my ( $parser, $message, $line, $col ) = @_; my $error = XML::SAX::Exception::Parse->new( LineNumber => $line, ColumnNumber => $col, Message => $message, ); $parser->{HANDLER}->error( $error ); } sub fatal_error { my ( $parser, $message, $line, $col ) = @_; my $error = XML::SAX::Exception::Parse->new( LineNumber => $line, ColumnNumber => $col, Message => $message, ); $parser->{HANDLER}->fatal_error( $error ); } 1; package XML::LibXML::RelaxNG; sub CLONE_SKIP { 1 } sub new { my $class = shift; my %args = @_; my $self = undef; if ( defined $args{location} ) { $self = $class->parse_location( $args{location} ); } elsif ( defined $args{string} ) { $self = $class->parse_buffer( $args{string} ); } elsif ( defined $args{DOM} ) { $self = $class->parse_document( $args{DOM} ); } return $self; } 1; package XML::LibXML::Schema; sub CLONE_SKIP { 1 } sub new { my $class = shift; my %args = @_; my $self = undef; if ( defined $args{location} ) { $self = $class->parse_location( $args{location} ); } elsif ( defined $args{string} ) { $self = $class->parse_buffer( $args{string} ); } return $self; } 1; #-------------------------------------------------------------------------# # XML::LibXML::Pattern Interface # #-------------------------------------------------------------------------# package XML::LibXML::Pattern; sub CLONE_SKIP { 1 } sub new { my $class = shift; my ($pattern,$ns_map)=@_; my $self = undef; unless (UNIVERSAL::can($class,'_compilePattern')) { croak("Cannot create XML::LibXML::Pattern - ". "your libxml2 is compiled without pattern support!"); } if (ref($ns_map) eq 'HASH') { # translate prefix=>URL hash to a (URL,prefix) list $self = $class->_compilePattern($pattern,0,[reverse %$ns_map]); } else { $self = $class->_compilePattern($pattern,0); } return $self; } 1; #-------------------------------------------------------------------------# # XML::LibXML::RegExp Interface # #-------------------------------------------------------------------------# package XML::LibXML::RegExp; sub CLONE_SKIP { 1 } sub new { my $class = shift; my ($regexp)=@_; unless (UNIVERSAL::can($class,'_compile')) { croak("Cannot create XML::LibXML::RegExp - ". "your libxml2 is compiled without regexp support!"); } return $class->_compile($regexp); } 1; #-------------------------------------------------------------------------# # XML::LibXML::XPathExpression Interface # #-------------------------------------------------------------------------# package XML::LibXML::XPathExpression; sub CLONE_SKIP { 1 } 1; #-------------------------------------------------------------------------# # XML::LibXML::InputCallback Interface # #-------------------------------------------------------------------------# package XML::LibXML::InputCallback; use vars qw($_CUR_CB @_GLOBAL_CALLBACKS @_CB_STACK $_CB_NESTED_DEPTH @_CB_NESTED_STACK); BEGIN { $_CUR_CB = undef; @_GLOBAL_CALLBACKS = (); @_CB_STACK = (); $_CB_NESTED_DEPTH = 0; @_CB_NESTED_STACK = (); } sub CLONE_SKIP { return $XML::LibXML::__threads_shared ? 0 : 1; } #-------------------------------------------------------------------------# # global callbacks # #-------------------------------------------------------------------------# sub _callback_match { my $uri = shift; my $retval = 0; # loop through the callbacks, and find the first matching one. # The callbacks are stored in execution order (reverse stack order). # Any new global callbacks are shifted to the callback stack. foreach my $cb ( @_GLOBAL_CALLBACKS ) { # callbacks have to return 1, 0 or undef, while 0 and undef # are handled the same way. # in fact, if callbacks return other values, the global match # assumes silently that the callback failed. $retval = $cb->[0]->($uri); if ( defined $retval and $retval == 1 ) { # make the other callbacks use this callback $_CUR_CB = $cb; unshift @_CB_STACK, $cb; last; } } return $retval; } sub _callback_open { my $uri = shift; my $retval = undef; # the open callback has to return a defined value. # if one works on files this can be a file handle. But # depending on the needs of the callback it also can be a # database handle or a integer labeling a certain dataset. if ( defined $_CUR_CB ) { $retval = $_CUR_CB->[1]->( $uri ); # reset the callbacks, if one callback cannot open an uri if ( not defined $retval or $retval == 0 ) { shift @_CB_STACK; $_CUR_CB = $_CB_STACK[0]; } } return $retval; } sub _callback_read { my $fh = shift; my $buflen = shift; my $retval = undef; if ( defined $_CUR_CB ) { $retval = $_CUR_CB->[2]->( $fh, $buflen ); } return $retval; } sub _callback_close { my $fh = shift; my $retval = 0; if ( defined $_CUR_CB ) { $retval = $_CUR_CB->[3]->( $fh ); shift @_CB_STACK; $_CUR_CB = $_CB_STACK[0]; } return $retval; } #-------------------------------------------------------------------------# # member functions and methods # #-------------------------------------------------------------------------# sub new { my $CLASS = shift; return bless {'_CALLBACKS' => []}, $CLASS; } # add a callback set to the callback stack # synopsis: $icb->register_callbacks( [$match_cb, $open_cb, $read_cb, $close_cb] ); sub register_callbacks { my $self = shift; my $cbset = shift; # test if callback set is complete if ( ref $cbset eq "ARRAY" and scalar( @$cbset ) == 4 ) { unshift @{$self->{_CALLBACKS}}, $cbset; } } # remove a callback set to the callback stack # if a callback set is passed, this function will check for the match function sub unregister_callbacks { my $self = shift; my $cbset = shift; if ( ref $cbset eq "ARRAY" and scalar( @$cbset ) == 4 ) { $self->{_CALLBACKS} = [grep { $_->[0] != $cbset->[0] } @{$self->{_CALLBACKS}}]; } else { shift @{$self->{_CALLBACKS}}; } } # make libxml2 use the callbacks sub init_callbacks { my $self = shift; my $parser = shift; #initialize the libxml2 callbacks unless this is a nested callback $self->lib_init_callbacks() unless($_CB_NESTED_DEPTH); #store the callbacks for any outer executing parser instance $_CB_NESTED_DEPTH++; push @_CB_NESTED_STACK, [ $_CUR_CB, [@_CB_STACK], [@_GLOBAL_CALLBACKS], ]; #initialize the callback variables for the current parser $_CUR_CB = undef; @_CB_STACK = (); @_GLOBAL_CALLBACKS = @{ $self->{_CALLBACKS} }; #attach parser specific callbacks if($parser) { my $mcb = $parser->match_callback(); my $ocb = $parser->open_callback(); my $rcb = $parser->read_callback(); my $ccb = $parser->close_callback(); if ( defined $mcb and defined $ocb and defined $rcb and defined $ccb ) { unshift @_GLOBAL_CALLBACKS, [$mcb, $ocb, $rcb, $ccb]; } } #attach global callbacks if ( defined $XML::LibXML::match_cb and defined $XML::LibXML::open_cb and defined $XML::LibXML::read_cb and defined $XML::LibXML::close_cb ) { push @_GLOBAL_CALLBACKS, [$XML::LibXML::match_cb, $XML::LibXML::open_cb, $XML::LibXML::read_cb, $XML::LibXML::close_cb]; } } # reset libxml2's callbacks sub cleanup_callbacks { my $self = shift; #restore the callbacks for the outer parser instance $_CB_NESTED_DEPTH--; my $saved = pop @_CB_NESTED_STACK; $_CUR_CB = $saved->[0]; @_CB_STACK = (@{$saved->[1]}); @_GLOBAL_CALLBACKS = (@{$saved->[2]}); #clean up the libxml2 callbacks unless there are still outer parsing instances $self->lib_cleanup_callbacks() unless($_CB_NESTED_DEPTH); } $XML::LibXML::__loaded=1; 1; __END__