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See the License for the specific language governing permissions and limitations under the License. nokogumbo-1.4.2/lib/0000755000004100000410000000000012537757145014334 5ustar www-datawww-datanokogumbo-1.4.2/lib/nokogumbo.rb0000644000004100000410000001433412537757145016666 0ustar www-datawww-datarequire 'nokogiri' require 'nokogumboc' module Nokogiri # Parse an HTML document. +string+ contains the document. +string+ # may also be an IO-like object. Returns a +Nokogiri::HTML::Document+. def self.HTML5(string) Nokogiri::HTML5.parse(string) end module HTML5 # Parse an HTML document. +string+ contains the document. +string+ # may also be an IO-like object. Returns a +Nokogiri::HTML::Document+. def self.parse(string) if string.respond_to? :read string = string.read end # convert to UTF-8 (Ruby 1.9+) if string.respond_to?(:encoding) and string.encoding != Encoding::UTF_8 string = reencode(string) end Nokogumbo.parse(string.to_s) end # Fetch and parse a HTML document from the web, following redirects, # handling https, and determining the character encoding using HTML5 # rules. +uri+ may be a +String+ or a +URI+. +options+ contains # http headers and special options. Everything which is not a # special option is considered a header. Special options include: # * :follow_limit => number of redirects which are followed # * :basic_auth => [username, password] def self.get(uri, options={}) headers = options.clone headers = {:follow_limit => headers} if Numeric === headers # deprecated limit=headers[:follow_limit] ? headers.delete(:follow_limit).to_i : 10 require 'net/http' uri = URI(uri) unless URI === uri http = Net::HTTP.new(uri.host, uri.port) # TLS / SSL support http.use_ssl = true if uri.scheme == 'https' # Pass through Net::HTTP override values, which currently include: # :ca_file, :ca_path, :cert, :cert_store, :ciphers, # :close_on_empty_response, :continue_timeout, :key, :open_timeout, # :read_timeout, :ssl_timeout, :ssl_version, :use_ssl, # :verify_callback, :verify_depth, :verify_mode options.each do |key, value| http.send "#{key}=", headers.delete(key) if http.respond_to? "#{key}=" end request = Net::HTTP::Get.new(uri.request_uri) # basic authentication auth = headers.delete(:basic_auth) auth ||= [uri.user, uri.password] if uri.user and uri.password request.basic_auth auth.first, auth.last if auth # remaining options are treated as headers headers.each {|key, value| request[key.to_s] = value.to_s} response = http.request(request) case response when Net::HTTPSuccess doc = parse(reencode(response.body, response['content-type'])) doc.instance_variable_set('@response', response) doc.class.send(:attr_reader, :response) doc when Net::HTTPRedirection response.value if limit <= 1 location = URI.join(uri, response['location']) get(location, options.merge(:follow_limit => limit-1)) else response.value end end # while fragment is on the Gumbo TODO list, simulate it by doing # a full document parse and ignoring the parent , , and # tags, and collecting up the children of each. def self.fragment(string) doc = parse(string) fragment = Nokogiri::HTML::DocumentFragment.new(doc) if doc.children.length != 1 or doc.children.first.name != 'html' # no HTML? Return document as is fragment = doc else # examine children of HTML element children = doc.children.first.children # head is always first. If present, take children but otherwise # ignore the head element if children.length > 0 and doc.children.first.name = 'head' fragment << children.shift.children end # body may be next, or last. If found, take children but otherwise # ignore the body element. Also take any remaining elements, taking # care to preserve order. if children.length > 0 and doc.children.first.name = 'body' fragment << children.shift.children fragment << children elsif children.length > 0 and doc.children.last.name = 'body' body = children.pop fragment << children fragment << body.children else fragment << children end end # return result fragment end private # Charset sniffing is a complex and controversial topic that understandably # isn't done _by default_ by the Ruby Net::HTTP library. This being said, # it is a very real problem for consumers of HTML as the default for HTML # is iso-8859-1, most "good" producers use utf-8, and the Gumbo parser # *only* supports utf-8. # # Accordingly, Nokogiri::HTML::Document.parse provides limited encoding # detection. Following this lead, Nokogiri::HTML5 attempts to do likewise, # while attempting to more closely follow the HTML5 standard. # # http://bugs.ruby-lang.org/issues/2567 # http://www.w3.org/TR/html5/syntax.html#determining-the-character-encoding # def self.reencode(body, content_type=nil) return body unless body.respond_to? :encoding if body.encoding == Encoding::ASCII_8BIT encoding = nil # look for a Byte Order Mark (BOM) if body[0..1] == "\xFE\xFF" encoding = 'utf-16be' elsif body[0..1] == "\xFF\xFE" encoding = 'utf-16le' elsif body[0..2] == "\xEF\xBB\xBF" encoding = 'utf-8' end # look for a charset in a content-encoding header if content_type encoding ||= content_type[/charset=(.*?)($|\s|;)/i, 1] end # look for a charset in a meta tag in the first 1024 bytes if not encoding data = body[0..1023].gsub(/|\Z)/m, '') data.scan(//m).each do |meta| encoding ||= meta[/charset=["']?([^>]*?)($|["'\s>])/im, 1] end end # if all else fails, default to the official default encoding for HTML encoding ||= Encoding::ISO_8859_1 # change the encoding to match the detected or inferred encoding begin body.force_encoding(encoding) rescue ArgumentError body.force_encoding(Encoding::ISO_8859_1) end end body.encode(Encoding::UTF_8) end end end nokogumbo-1.4.2/test-nokogumbo.rb0000644000004100000410000000721012537757145017070 0ustar www-datawww-data$:.unshift('lib') $:.unshift('ext/nokogumboc') gem 'minitest' require 'nokogumbo' require 'minitest/autorun' class TestNokogumbo < Minitest::Test def test_element_text doc = Nokogiri::HTML5(buffer) assert_equal "content", doc.at('span').text end def test_element_cdata doc = Nokogiri::HTML5(buffer) assert_equal "foobar", doc.at('textarea').text.strip end def test_attr_value doc = Nokogiri::HTML5(buffer) assert_equal "utf-8", doc.at('meta')['charset'] end def test_comment doc = Nokogiri::HTML5(buffer) assert_equal " test comment ", doc.xpath('//comment()').text end def test_unknown_element doc = Nokogiri::HTML5(buffer) assert_equal "main", doc.at('main').name end def test_IO require 'stringio' doc = Nokogiri::HTML5(StringIO.new(buffer)) assert_equal 'textarea', doc.at('form').element_children.first.name end def test_nil doc = Nokogiri::HTML5(nil) assert_equal 1, doc.search('body').count end if ''.respond_to? 'encoding' def test_macroman_encoding mac="\xCA".force_encoding('macroman') doc = Nokogiri::HTML5(mac) assert_equal ' ', doc.at('span').to_xml end def test_iso8859_encoding iso8859="Se\xF1or".force_encoding(Encoding::ASCII_8BIT) doc = Nokogiri::HTML5(iso8859) assert_equal 'Señor', doc.at('span').to_xml end def test_charset_encoding utf8="Se\xC3\xB1or". force_encoding(Encoding::ASCII_8BIT) doc = Nokogiri::HTML5(utf8) assert_equal 'Señor', doc.at('span').to_xml end def test_bogus_encoding bogus="Se\xF1or". force_encoding(Encoding::ASCII_8BIT) doc = Nokogiri::HTML5(bogus) assert_equal 'Señor', doc.at('span').to_xml end end def test_html5_doctype doc = Nokogumbo.parse("") assert_match //, doc.to_html end def test_fragment_head doc = Nokogiri::HTML5.fragment(buffer[/(.*?)<\/head>/m, 1]) assert_equal "hello world", doc.xpath('title').text assert_equal "utf-8", doc.xpath('meta').first['charset'] end def test_fragment_body doc = Nokogiri::HTML5.fragment(buffer[/(.*?)<\/body>/m, 1]) assert_equal 'content', doc.xpath('main/span').to_xml assert_equal " test comment ", doc.xpath('comment()').text end def test_xlink_attribute source = <<-EOF.gsub(/^ {6}/, '') EOF doc = Nokogiri::HTML5.fragment(source) a = doc.at('a') assert_equal ["xlink:href", "xmlns:xlink"], a.attributes.keys.sort end def x_test_template # future source = <<-EOF.gsub(/^ {6}/, '') EOF doc = Nokogiri::HTML5.fragment(source) template = doc.at('template') assert_equal "productrow", template['id'] assert_equal "record", template.at('td')['class'] end private def buffer <<-EOF.gsub(/^ /, '') hello world

hello world

content
EOF end end nokogumbo-1.4.2/metadata.yml0000644000004100000410000000447412537757145016102 0ustar www-datawww-data--- !ruby/object:Gem::Specification name: nokogumbo version: !ruby/object:Gem::Version version: 1.4.2 platform: ruby authors: - Sam Ruby autorequire: bindir: bin cert_chain: [] date: 2015-05-12 00:00:00.000000000 Z dependencies: - !ruby/object:Gem::Dependency name: nokogiri requirement: !ruby/object:Gem::Requirement requirements: - - ">=" - !ruby/object:Gem::Version version: '0' type: :runtime prerelease: false version_requirements: !ruby/object:Gem::Requirement requirements: - - ">=" - !ruby/object:Gem::Version version: '0' description: Nokogumbo allows a Ruby program to invoke the Gumbo HTML5 parser and access the result as a Nokogiri parsed document. email: rubys@intertwingly.net executables: [] extensions: - ext/nokogumboc/extconf.rb extra_rdoc_files: [] files: - LICENSE.txt - README.md - ext/nokogumboc/extconf.rb - ext/nokogumboc/nokogumbo.c - gumbo-parser/src/attribute.c - gumbo-parser/src/attribute.h - gumbo-parser/src/char_ref.c - gumbo-parser/src/char_ref.h - gumbo-parser/src/char_ref.rl - gumbo-parser/src/error.c - gumbo-parser/src/error.h - gumbo-parser/src/gumbo.h - gumbo-parser/src/insertion_mode.h - gumbo-parser/src/parser.c - gumbo-parser/src/parser.h - gumbo-parser/src/string_buffer.c - gumbo-parser/src/string_buffer.h - gumbo-parser/src/string_piece.c - gumbo-parser/src/string_piece.h - gumbo-parser/src/tag.c - gumbo-parser/src/token_type.h - gumbo-parser/src/tokenizer.c - gumbo-parser/src/tokenizer.h - gumbo-parser/src/tokenizer_states.h - gumbo-parser/src/utf8.c - gumbo-parser/src/utf8.h - gumbo-parser/src/util.c - gumbo-parser/src/util.h - gumbo-parser/src/vector.c - gumbo-parser/src/vector.h - gumbo-parser/visualc/include/strings.h - lib/nokogumbo.rb - test-nokogumbo.rb homepage: https://github.com/rubys/nokogumbo/#readme licenses: - Apache 2.0 metadata: {} post_install_message: rdoc_options: [] require_paths: - lib required_ruby_version: !ruby/object:Gem::Requirement requirements: - - ">=" - !ruby/object:Gem::Version version: '0' required_rubygems_version: !ruby/object:Gem::Requirement requirements: - - ">=" - !ruby/object:Gem::Version version: '0' requirements: [] rubyforge_project: rubygems_version: 2.4.5 signing_key: specification_version: 4 summary: Nokogiri interface to the Gumbo HTML5 parser test_files: [] nokogumbo-1.4.2/ext/0000755000004100000410000000000012537757145014366 5ustar www-datawww-datanokogumbo-1.4.2/ext/nokogumboc/0000755000004100000410000000000012537757145016531 5ustar www-datawww-datanokogumbo-1.4.2/ext/nokogumboc/extconf.rb0000644000004100000410000000313412537757145020525 0ustar www-datawww-datarequire 'mkmf' $CFLAGS += " -std=c99" if have_library('xml2', 'xmlNewDoc') # libxml2 libraries from http://www.xmlsoft.org/ pkg_config('libxml-2.0') # nokogiri configuration from gem install nokogiri_lib = Gem.find_files('nokogiri'). select { |name| name.match(%r{gems/nokogiri-([\d.]+)/lib/nokogiri}) }. sort_by {|name| name[/nokogiri-([\d.]+)/,1].split('.').map(&:to_i)}.last if nokogiri_lib nokogiri_ext = nokogiri_lib.sub(%r(lib/nokogiri(.rb)?$), 'ext/nokogiri') # if that doesn't work, try workarounds found in Nokogiri's extconf unless find_header('nokogiri.h', nokogiri_ext) require "#{nokogiri_ext}/extconf.rb" end # if found, enable direct calls to Nokogiri (and libxml2) $CFLAGS += ' -DNGLIB' if find_header('nokogiri.h', nokogiri_ext) if File.exists?("/etc/gentoo-release") # link to the library to prevent: nokogumbo.c:(.text+0x26a): undefined reference to `Nokogiri_wrap_xml_document' $LDFLAGS += " -L#{nokogiri_ext} -l:nokogiri.so" end end end # add in gumbo-parser source from github if not already installed unless have_library('gumbo', 'gumbo_parse') rakehome = ENV['RAKEHOME'] || File.expand_path('../..') unless File.exist? "#{rakehome}/ext/nokogumboc/gumbo.h" require 'fileutils' FileUtils.cp Dir["#{rakehome}/gumbo-parser/src/*"], "#{rakehome}/ext/nokogumboc" case RbConfig::CONFIG['target_os'] when 'mingw32', /mswin/ FileUtils.cp Dir["#{rakehome}/gumbo-parser/visualc/include/*"], "#{rakehome}/ext/nokogumboc" end $srcs = $objs = nil end end create_makefile('nokogumboc') nokogumbo-1.4.2/ext/nokogumboc/nokogumbo.c0000644000004100000410000001614312537757145020702 0ustar www-datawww-data// // nokogumbo.c defines the following: // // class Nokogumbo // def parse(utf8_string) # returns Nokogiri::HTML::Document // end // // Processing starts by calling gumbo_parse_with_options. The resulting // document tree is then walked: // // * if Nokogiri and libxml2 headers are available at compile time, // (ifdef NGLIB) then a parallel libxml2 tree is constructed, and the // final document is then wrapped using Nokogiri_wrap_xml_document. // This approach reduces memory and CPU requirements as Ruby objects // are only built when necessary. // // * if the necessary headers are not available at compile time, Nokogiri // methods are called instead, producing the equivalent functionality. // #include #include // class constants static VALUE Document; #ifdef NGLIB #include #include #define NIL NULL #define CONST_CAST (xmlChar const*) #else #define NIL 0 #define CONST_CAST // more class constants static VALUE Element; static VALUE Text; static VALUE CDATA; static VALUE Comment; // interned symbols static VALUE new; static VALUE set_attribute; static VALUE add_child; static VALUE internal_subset; static VALUE remove_; static VALUE create_internal_subset; // map libxml2 types to Ruby VALUE #define xmlNodePtr VALUE #define xmlDocPtr VALUE // redefine libxml2 API as Ruby function calls #define xmlNewDocNode(doc, ns, name, content) \ rb_funcall(Element, new, 2, rb_str_new2(name), doc) #define xmlNewProp(element, name, value) \ rb_funcall(element, set_attribute, 2, rb_str_new2(name), rb_str_new2(value)) #define xmlNewDocText(doc, text) \ rb_funcall(Text, new, 2, rb_str_new2(text), doc) #define xmlNewCDataBlock(doc, content, length) \ rb_funcall(CDATA, new, 2, rb_str_new(content, length), doc) #define xmlNewDocComment(doc, text) \ rb_funcall(Comment, new, 2, doc, rb_str_new2(text)) #define xmlAddChild(element, node) \ rb_funcall(element, add_child, 1, node) #define xmlDocSetRootElement(doc, root) \ rb_funcall(doc, add_child, 1, root) #define xmlCreateIntSubset(doc, name, external, system) \ rb_funcall(doc, create_internal_subset, 3, rb_str_new2(name), \ (external ? rb_str_new2(external) : Qnil), \ (system ? rb_str_new2(system) : Qnil)); #define Nokogiri_wrap_xml_document(klass, doc) \ doc // remove internal subset from newly created documents static VALUE xmlNewDoc(char* version) { VALUE doc = rb_funcall(Document, new, 0); rb_funcall(rb_funcall(doc, internal_subset, 0), remove_, 0); return doc; } #endif // Build a Nokogiri Element for a given GumboElement (recursively) static xmlNodePtr walk_tree(xmlDocPtr document, GumboElement *node) { // determine tag name for a given node xmlNodePtr element; if (node->tag != GUMBO_TAG_UNKNOWN) { element = xmlNewDocNode(document, NIL, CONST_CAST gumbo_normalized_tagname(node->tag), NIL); } else { GumboStringPiece tag = node->original_tag; gumbo_tag_from_original_text(&tag); #ifdef _MSC_VER char* name = alloca(tag.length+1); #else char name[tag.length+1]; #endif strncpy(name, tag.data, tag.length); name[tag.length] = '\0'; element = xmlNewDocNode(document, NIL, CONST_CAST name, NIL); } // add in the attributes GumboVector* attrs = &node->attributes; char *name = NULL; int namelen = 0; char *ns; for (int i=0; i < attrs->length; i++) { GumboAttribute *attr = attrs->data[i]; switch (attr->attr_namespace) { case GUMBO_ATTR_NAMESPACE_XLINK: ns = "xlink:"; break; case GUMBO_ATTR_NAMESPACE_XML: ns = "xml:"; break; case GUMBO_ATTR_NAMESPACE_XMLNS: ns = "xmlns:"; if (!strcmp(attr->name, "xmlns")) ns = NULL; break; default: ns = NULL; } if (ns) { if (strlen(ns) + strlen(attr->name) + 1 > namelen) { free(name); name = NULL; } if (!name) { namelen = strlen(ns) + strlen(attr->name) + 1; name = malloc(namelen); } strcpy(name, ns); strcat(name, attr->name); xmlNewProp(element, CONST_CAST name, CONST_CAST attr->value); } else { xmlNewProp(element, CONST_CAST attr->name, CONST_CAST attr->value); } } if (name) free(name); // add in the children GumboVector* children = &node->children; for (int i=0; i < children->length; i++) { GumboNode* child = children->data[i]; xmlNodePtr node = NIL; switch (child->type) { case GUMBO_NODE_ELEMENT: // case GUMBO_NODE_TEMPLATE: /* future */ node = walk_tree(document, &child->v.element); break; case GUMBO_NODE_WHITESPACE: case GUMBO_NODE_TEXT: node = xmlNewDocText(document, CONST_CAST child->v.text.text); break; case GUMBO_NODE_CDATA: node = xmlNewCDataBlock(document, CONST_CAST child->v.text.original_text.data, (int) child->v.text.original_text.length); break; case GUMBO_NODE_COMMENT: node = xmlNewDocComment(document, CONST_CAST child->v.text.text); break; case GUMBO_NODE_DOCUMENT: break; // should never happen -- ignore } if (node) xmlAddChild(element, node); } return element; } // Parse a string using gumbo_parse into a Nokogiri document static VALUE parse(VALUE self, VALUE string) { GumboOutput *output = gumbo_parse_with_options( &kGumboDefaultOptions, RSTRING_PTR(string), (size_t) RSTRING_LEN(string) ); xmlDocPtr doc = xmlNewDoc(CONST_CAST "1.0"); xmlNodePtr root = walk_tree(doc, &output->root->v.element); xmlDocSetRootElement(doc, root); if (output->document->v.document.has_doctype) { const char *public = output->document->v.document.public_identifier; const char *system = output->document->v.document.system_identifier; xmlCreateIntSubset(doc, CONST_CAST "html", (strlen(public) ? CONST_CAST public : NIL), (strlen(system) ? CONST_CAST system : NIL)); } gumbo_destroy_output(&kGumboDefaultOptions, output); return Nokogiri_wrap_xml_document(Document, doc); } // Initialize the Nokogumbo class and fetch constants we will use later void Init_nokogumboc() { rb_funcall(rb_mKernel, rb_intern("gem"), 1, rb_str_new2("nokogiri")); rb_require("nokogiri"); // class constants VALUE Nokogiri = rb_const_get(rb_cObject, rb_intern("Nokogiri")); VALUE HTML = rb_const_get(Nokogiri, rb_intern("HTML")); Document = rb_const_get(HTML, rb_intern("Document")); #ifndef NGLIB // more class constants VALUE XML = rb_const_get(Nokogiri, rb_intern("XML")); Element = rb_const_get(XML, rb_intern("Element")); Text = rb_const_get(XML, rb_intern("Text")); CDATA = rb_const_get(XML, rb_intern("CDATA")); Comment = rb_const_get(XML, rb_intern("Comment")); // interned symbols new = rb_intern("new"); set_attribute = rb_intern("set_attribute"); add_child = rb_intern("add_child"); internal_subset = rb_intern("internal_subset"); remove_ = rb_intern("remove"); create_internal_subset = rb_intern("create_internal_subset"); #endif // define Nokogumbo class with a singleton parse method VALUE Gumbo = rb_define_class("Nokogumbo", rb_cObject); rb_define_singleton_method(Gumbo, "parse", parse, 1); } nokogumbo-1.4.2/README.md0000644000004100000410000000554012537757145015051 0ustar www-datawww-dataNokogumbo - a Nokogiri interface to the Gumbo HTML5 parser. =========== Nokogumbo provides the ability for a Ruby program to invoke the [Gumbo HTML5 parser](https://github.com/google/gumbo-parser#readme) and to access the result as a [Nokogiri::HTML::Document](http://rdoc.info/github/sparklemotion/nokogiri/Nokogiri/HTML/Document). [![Build Status](https://travis-ci.org/rubys/nokogumbo.svg)](https://travis-ci.org/rubys/nokogumbo) Usage ----- ```ruby require 'nokogumbo' doc = Nokogiri::HTML5(string) ``` An experimental _fragment_ method is also provided. While not HTML5 compliant, it may be useful: ```ruby require 'nokogumbo' doc = Nokogiri::HTML5.fragment(string) ``` Because HTML is often fetched via the web, a convenience interface to HTTP get is also provided: ```ruby require 'nokogumbo' doc = Nokogiri::HTML5.get(uri) ``` Example ----- ```ruby require 'nokogumbo' puts Nokogiri::HTML5.get('http://nokogiri.org').search('ol li')[2].text ``` Notes ----- * The `Nokogiri::HTML5.fragment` function takes a string and parses it as a HTML5 document. The ``, ``, and `` elements are removed from this document, and any children of these elements that remain are returned as a `Nokogiri::HTML::DocumentFragment`. * The `Nokogiri::HTML5.parse` function takes a string and passes it to the gumbo_parse_with_options method, using the default options. The resulting Gumbo parse tree is then walked. * If the necessary Nokogiri and [libxml2](http://xmlsoft.org/html/) headers can be found at installation time then an [xmlDoc](http://xmlsoft.org/html/libxml-tree.html#xmlDoc) tree is produced and a single Nokogiri Ruby object is constructed to wrap the xmlDoc structure. Nokogiri only produces Ruby objects as necessary, so all searching is done using the underlying libxml2 libraries. * If the necessary headers are not present at installation time, then Nokogiri Ruby objects are created for each Gumbo node. Other than memory usage and CPU time, the results should be equivalent. * The `Nokogiri::HTML5.get` function takes care of following redirects, https, and determining the character encoding of the result, based on the rules defined in the HTML5 specification for doing so. * Instead of uppercase element names, lowercase element names are produced. * Instead of returning `unknown` as the element name for unknown tags, the original tag name is returned verbatim. * If the Gumbo HTML5 parser is not already installed, the source for the parser will be downloaded and compiled into the Gem itself. Installation ============ git clone --recursive https://github.com/rubys/nokogumbo.git cd nokogumbo bundle install rake gem gem install pkg/nokogumbo*.gem Related efforts ============ * [ruby-gumbo](https://github.com/galdor/ruby-gumbo#readme) - a ruby binding for the Gumbo HTML5 parser.