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| /** | ||
| * (The MIT License) | ||
| * | ||
| * Copyright (c) 2008 - 2012: | ||
| * | ||
| * * {Aaron Patterson}[http://tenderlovemaking.com] | ||
| * * {Mike Dalessio}[http://mike.daless.io] | ||
| * * {Charles Nutter}[http://blog.headius.com] | ||
| * * {Sergio Arbeo}[http://www.serabe.com] | ||
| * * {Patrick Mahoney}[http://polycrystal.org] | ||
| * * {Yoko Harada}[http://yokolet.blogspot.com] | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining | ||
| * a copy of this software and associated documentation files (the | ||
| * 'Software'), to deal in the Software without restriction, including | ||
| * without limitation the rights to use, copy, modify, merge, publish, | ||
| * distribute, sublicense, and/or sell copies of the Software, and to | ||
| * permit persons to whom the Software is furnished to do so, subject to | ||
| * the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be | ||
| * included in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | ||
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | ||
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| */ | ||
|
|
||
| package nokogiri; | ||
|
|
||
| import static nokogiri.internals.NokogiriHelpers.getNokogiriClass; | ||
| import static org.jruby.javasupport.util.RuntimeHelpers.invoke; | ||
| import static nokogiri.internals.NokogiriHelpers.rubyStringToString; | ||
|
|
||
| import java.io.ByteArrayInputStream; | ||
| import java.io.IOException; | ||
| import java.nio.charset.Charset; | ||
| import java.nio.charset.IllegalCharsetNameException; | ||
| import java.util.concurrent.Callable; | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.EnumSet; | ||
| import java.util.concurrent.Future; | ||
| import java.util.concurrent.FutureTask; | ||
| import java.util.concurrent.ThreadFactory; | ||
|
|
||
| import nokogiri.internals.ClosedStreamException; | ||
| import nokogiri.internals.NokogiriBlockingQueueInputStream; | ||
| import nokogiri.internals.ParserContext; | ||
|
|
||
| import org.jruby.Ruby; | ||
| import org.jruby.RubyClass; | ||
| import org.jruby.RubyException; | ||
| import org.jruby.RubyFixnum; | ||
| import org.jruby.RubyObject; | ||
| import org.jruby.RubyString; | ||
| import org.jruby.anno.JRubyClass; | ||
| import org.jruby.anno.JRubyMethod; | ||
| import org.jruby.exceptions.RaiseException; | ||
| import org.jruby.runtime.ThreadContext; | ||
| import org.jruby.runtime.builtin.IRubyObject; | ||
|
|
||
| /** | ||
| * Class for Nokogiri::HTML::SAX::PushParser | ||
| * | ||
| * @author | ||
| * @author Piotr Szmielew <p.szmielew@ava.waw.pl> - based on Nokogiri::XML::SAX::PushParser | ||
| */ | ||
| @JRubyClass(name="Nokogiri::HTML::SAX::PushParser") | ||
| public class HtmlSaxPushParser extends RubyObject { | ||
| ParserContext.Options options; | ||
| IRubyObject optionsRuby; | ||
| IRubyObject saxParser; | ||
| NokogiriBlockingQueueInputStream stream; | ||
| ParserTask parserTask = null; | ||
| FutureTask<HtmlSaxParserContext> futureTask = null; | ||
| ExecutorService executor = null; | ||
|
|
||
| public HtmlSaxPushParser(Ruby ruby, RubyClass rubyClass) { | ||
| super(ruby, rubyClass); | ||
| } | ||
|
|
||
| @Override | ||
| public void finalize() { | ||
| terminateTask(null); | ||
| } | ||
|
|
||
| /** | ||
| * Silently skips provided encoding | ||
| * | ||
| */ | ||
| @JRubyMethod | ||
| public IRubyObject initialize_native(final ThreadContext context, | ||
| IRubyObject saxParser, | ||
| IRubyObject fileName, | ||
| IRubyObject encoding) { | ||
| optionsRuby | ||
| = invoke(context, context.getRuntime().getClassFromPath("Nokogiri::XML::ParseOptions"), "new"); | ||
|
|
||
| options = new ParserContext.Options(0); | ||
| this.saxParser = saxParser; | ||
| return this; | ||
| } | ||
|
|
||
| /** | ||
| * Returns an integer. | ||
| */ | ||
| @JRubyMethod(name="options") | ||
| public IRubyObject getOptions(ThreadContext context) { | ||
| return invoke(context, optionsRuby, "options"); | ||
| } | ||
|
|
||
| /** | ||
| * <code>val</code> is an integer. | ||
| */ | ||
| @JRubyMethod(name="options=") | ||
| public IRubyObject setOptions(ThreadContext context, IRubyObject val) { | ||
| invoke(context, optionsRuby, "options=", val); | ||
| options = | ||
| new ParserContext.Options(val.convertToInteger().getLongValue()); | ||
| return getOptions(context); | ||
| } | ||
|
|
||
| @JRubyMethod | ||
| public IRubyObject native_write(ThreadContext context, IRubyObject chunk, | ||
| IRubyObject isLast) { | ||
| try { | ||
| initialize_task(context); | ||
| } catch (IOException e) { | ||
| throw context.getRuntime().newRuntimeError(e.getMessage()); | ||
| } | ||
| byte[] data = null; | ||
| if (chunk instanceof RubyString || chunk.respondsTo("to_str")) { | ||
| data = chunk.convertToString().getBytes(); | ||
| } else { | ||
| terminateTask(context); | ||
| XmlSyntaxError xmlSyntaxError = | ||
| (XmlSyntaxError) NokogiriService.XML_SYNTAXERROR_ALLOCATOR.allocate(context.getRuntime(), getNokogiriClass(context.getRuntime(), "Nokogiri::HTML::SyntaxError")); | ||
| throw new RaiseException(xmlSyntaxError); | ||
| } | ||
|
|
||
| int errorCount0 = parserTask.getErrorCount();; | ||
|
|
||
|
|
||
| if (isLast.isTrue()) { | ||
| IRubyObject document = invoke(context, this, "document"); | ||
| invoke(context, document, "end_document"); | ||
| terminateTask(context); | ||
| } else { | ||
| try { | ||
| Future<Void> task = stream.addChunk(new ByteArrayInputStream(data)); | ||
| task.get(); | ||
| } catch (ClosedStreamException ex) { | ||
| // this means the stream is closed, ignore this exception | ||
| } catch (Exception e) { | ||
| throw context.getRuntime().newRuntimeError(e.getMessage()); | ||
| } | ||
|
|
||
| } | ||
|
|
||
| if (!options.recover && parserTask.getErrorCount() > errorCount0) { | ||
| terminateTask(context); | ||
| throw new RaiseException(parserTask.getLastError(), true); | ||
| } | ||
|
|
||
| return this; | ||
| } | ||
|
|
||
| private void initialize_task(ThreadContext context) throws IOException { | ||
| if (futureTask == null || stream == null) { | ||
| stream = new NokogiriBlockingQueueInputStream(); | ||
|
|
||
| parserTask = new ParserTask(context, saxParser); | ||
| futureTask = new FutureTask<HtmlSaxParserContext>(parserTask); | ||
| executor = Executors.newSingleThreadExecutor(new ThreadFactory() { | ||
| @Override | ||
| public Thread newThread(Runnable r) { | ||
| Thread t = new Thread(r); | ||
| t.setName("HtmlSaxPushParser"); | ||
| t.setDaemon(true); | ||
| return t; | ||
| } | ||
| }); | ||
| executor.submit(futureTask); | ||
| } | ||
| } | ||
|
|
||
| private synchronized void terminateTask(ThreadContext context) { | ||
| try { | ||
| Future<Void> task = stream.addChunk(NokogiriBlockingQueueInputStream.END); | ||
| task.get(); | ||
| } catch (ClosedStreamException ex) { | ||
| // ignore this exception, it means the stream was closed | ||
| } catch (Exception e) { | ||
| if (context != null) | ||
| throw context.getRuntime().newRuntimeError(e.getMessage()); | ||
| } | ||
| futureTask.cancel(true); | ||
| executor.shutdown(); | ||
| executor = null; | ||
| stream = null; | ||
| futureTask = null; | ||
| } | ||
|
|
||
|
|
||
| private class ParserTask implements Callable<HtmlSaxParserContext> { | ||
| private final ThreadContext context; | ||
| private final IRubyObject handler; | ||
| private final HtmlSaxParserContext parser; | ||
|
|
||
| private ParserTask(ThreadContext context, IRubyObject handler) { | ||
| RubyClass klazz = getNokogiriClass(context.getRuntime(), "Nokogiri::HTML::SAX::ParserContext"); | ||
| this.context = context; | ||
| this.handler = handler; | ||
| this.parser = (HtmlSaxParserContext) HtmlSaxParserContext.parse_stream(context, klazz, stream); | ||
| } | ||
|
|
||
| @Override | ||
| public HtmlSaxParserContext call() throws Exception { | ||
| try { | ||
| parser.parse_with(context, handler); | ||
| } finally { | ||
| // we have to close the stream before exiting, otherwise someone | ||
| // can add a chunk and block on task.get() forever. | ||
| stream.close(); | ||
| } | ||
| return parser; | ||
| } | ||
|
|
||
| private synchronized int getErrorCount() { | ||
| // check for null because thread may not have started yet | ||
| if (parser.getNokogiriHandler() == null) return 0; | ||
| else return parser.getNokogiriHandler().getErrorCount(); | ||
| } | ||
|
|
||
| private synchronized RubyException getLastError() { | ||
| return (RubyException) parser.getNokogiriHandler().getLastError(); | ||
| } | ||
| } | ||
| } |
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