From cfis at savagexi.com  Sun May  3 21:13:07 2009
From: cfis at savagexi.com (Charlie Savage)
Date: Sun, 03 May 2009 19:13:07 -0600
Subject: [libxml-devel] Frequent crashes of libxml-ruby with Ruby 1.9.1
In-Reply-To: <F530FDA2-BB74-419A-8E45-4DA2C278E43C@voormedia.com>
References: <F530FDA2-BB74-419A-8E45-4DA2C278E43C@voormedia.com>
Message-ID: <49FE4123.60706@savagexi.com>

Rolf,

> Currently we're building a Rails application that uses libxml-ruby 
> (1.1.3) to parse some documents and loop over its contents with xpath 
> expressions.
> 
> When running the application with Ruby 1.8.7-p72, everything works 
> flawlessly. With Ruby 1.9.1-p0, however, we get frequent double-linked 
> list errors, like the one below.
> 
> Is this is a known issue? If not, some pointers that may help us isolate 
> the issue would be very welcome. Thank you!

Do you by chance have a test case?

Charlie
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From alecjacobson at gmail.com  Fri May  1 10:47:08 2009
From: alecjacobson at gmail.com (Alec Jacobson)
Date: Fri, 1 May 2009 10:47:08 -0400
Subject: [libxml-devel] Typos in rdoc...
Message-ID: <86944d0905010747u4dc99591v458b6c533a93b6dc@mail.gmail.com>

In the rdoc for ?Class?LibXML::XML::Reader, in the first example the code reads:

parser = XML::Reader.string("<foo><bar>1</bar><bar>2</bar><bar>3</bar></foo>")
reader.read

Should that instead be:

reader = XML::Reader.string("<foo><bar>1</bar><bar>2</bar><bar>3</bar></foo>")
reader.read

Thanks, also the word "contrast" is spelt "contract" in the rdoc for
Class LibXML::XML::Parser in the first sentence.

-Alec Jacobson

alecjacobson.com

From sam.mulube at gmail.com  Mon May  4 06:14:12 2009
From: sam.mulube at gmail.com (sam mulube)
Date: Mon, 4 May 2009 11:14:12 +0100
Subject: [libxml-devel] Can't seem to supress warning and errors
In-Reply-To: <daf5da30-2db4-48d9-b299-ee66d2a413ea@z23g2000prd.googlegroups.com>
References: <daf5da30-2db4-48d9-b299-ee66d2a413ea@z23g2000prd.googlegroups.com>
Message-ID: <fd2e14540905040314t6aa61773y652f272ceb38fb8a@mail.gmail.com>

Hi Alex,

I puzzled about this for a while. Eventually I found this in the docs for
XML::Error (http://libxml.rubyforge.org/rdoc/classes/LibXML/XML/Error.html)

> By default, warnings, errors and fatal errors that libxml generates are
printed to STDERR via the XML::Error::VERBOSE_HANDLER proc.

> To disable this output you can install the quiet handler:

>     XML::Error.set_handler(&XML::Error::QUIET_HANDLER)

> Install your own handler:
>     XML::Error.set_handler do |error|
>        puts error.to_s
>     end

> Or remove all handlers:
>     XML::Error.reset_handler

So we've been using something a bit like the second method mentioned
above as we are trying to capture some sort of informative error
message about
what went wrong with the parsing to return the user.

Think there are some more examples in the test class for the error
handler (tc_error.rb) if you have a look at the source.

regards

sam


2009/4/23 Alex Wayne <alex at beautifulpixel.com>

> I am parsing a whole of imperfectly formed HTML.  In doing so, about
> 1600 errors are generated and dumped to the log/console every time I
> parse this feed.  Yet it parses fine with the recover option.  But the
> options for supressing the messages don't appear to work.
>
> Here's my code:
>
> parser = LibXML::XML::HTMLParser.string(Downloader.get
> (url).clean_html,
>  :options => LibXML::XML::HTMLParser::Options::RECOVER |
>    LibXML::XML::HTMLParser::Options::NOERROR |
>    LibXML::XML::HTMLParser::Options::NOWARNING)
> page = parser.parse.root
>
>
> Is this the right way to declare the options for supressing errors and
> warnings?  Why aren't they actually supressed.  I would worry too much
> about this normally, but it appears after some profiling it appears
> printing and handling these errors takes about 20-40% of my total
> request time in my rails app, so its a fairly large performance issue.
> _______________________________________________
> libxml-devel mailing list
> libxml-devel at rubyforge.org
> http://rubyforge.org/mailman/listinfo/libxml-devel
>
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From r.timmermans at voormedia.com  Thu May  7 08:20:18 2009
From: r.timmermans at voormedia.com (Rolf Timmermans)
Date: Thu, 7 May 2009 14:20:18 +0200
Subject: [libxml-devel] Frequent crashes of libxml-ruby with Ruby 1.9.1
In-Reply-To: <49FE4123.60706@savagexi.com>
References: <F530FDA2-BB74-419A-8E45-4DA2C278E43C@voormedia.com>
	<49FE4123.60706@savagexi.com>
Message-ID: <DA77A5DB-63B8-45F2-BE36-888F202F59AE@voormedia.com>

Hi Charlie,

Unfortunately the errors do not occur in our test environment.
It seems to happen during garbage collection, but so far have not been  
able to set up a test case that reproduces it.

Kind regards,

Rolf Timmermans

On 4 mei 2009, at 03:13, Charlie Savage wrote:

> Rolf,
>
>> Currently we're building a Rails application that uses libxml-ruby  
>> (1.1.3) to parse some documents and loop over its contents with  
>> xpath expressions.
>> When running the application with Ruby 1.8.7-p72, everything works  
>> flawlessly. With Ruby 1.9.1-p0, however, we get frequent double- 
>> linked list errors, like the one below.
>> Is this is a known issue? If not, some pointers that may help us  
>> isolate the issue would be very welcome. Thank you!
>
> Do you by chance have a test case?
>
> Charlie


From havanap at gmail.com  Thu May  7 22:37:33 2009
From: havanap at gmail.com (Norihito YAMAKAWA)
Date: Fri, 8 May 2009 11:37:33 +0900
Subject: [libxml-devel] Formatting Schema Validation Errors
In-Reply-To: <5eb98a9b0905070313u245f2e11w330643ec2fb7a1e6@mail.gmail.com>
References: <5eb98a9b0905070313u245f2e11w330643ec2fb7a1e6@mail.gmail.com>
Message-ID: <8154f7ea0905071937r1cdabc76h3d9240aa97ca889f@mail.gmail.com>

Hi.

You can  obtain more "native" errors by LibXML::XML::Error#set_error_handler.
It capture all errors of libxml, such as parsing, schema validations, etc.

XML::Error object has error level, domain, occurred node and more informations.
Means of  the constants are not documented in ruby-libxml rdoc,
so you may see libxml C API.
http://www.xmlsoft.org/html/libxml-xmlerror.html#xmlError

2009/5/7 Sudhindra Kulkarni <kulkarni.sudhi at gmail.com>:
> Hi,
>
> I have a schema validation site where given and xml schema validation is
> performed. The output shown by the libxml is not well formatted is there a
> way to neatly format the output by overriding a class method of libxml? or
> something like that?
>
> Regards,
> Sudhindra
>
>
> _______________________________________________
> libxml-devel mailing list
> libxml-devel at rubyforge.org
> http://rubyforge.org/mailman/listinfo/libxml-devel
>