mswl-eval

WebKIT(-ing) and Python

According to it’s definition :

“WebKit is an open source web browser engine. WebKit is also the name of the Mac OS X system framework version of the engine that’s used by Safari, Dashboard, Mail, and many other OS X applications. WebKit’s HTML and JavaScript code began as a branch of the KHTML and KJS libraries from KDE.  ”

Focusing on what WebKIT is , i found that there are many areas when a developer (and user as well) is able to contribute (after he gets involved on the Project).

Having a quick view on the project’s web page we see that are many ways to get involved on the Project. So let’s see :

Prerequisites :

a) You have to download the download the latest nightly build ,

b) You have to install developer tools (for your OS)

c) And then you have to check out and build the source code

As you notice you are not able to write source code untill you follow the steps above 🙂

After we followed the steps above there are some projects when new users (and developers as well) are able to contribute :

Notice that working with the source code has it’s own guidlines. Furthermore searching on the web i found that Python do provides several ways for WebBrowser Programming. Actually provides the following Api’s/bindings :

Although we can’t find any info about developing in Python with WebKit. Hope on of my following posts i will show some Python code for WebKit!

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QSOS and openBRR (Lightweight methodologies) – Gaps and impovements

Hello mates!

Making a comparison between QSOS and OpenBRR would fill a stack of papers books ,and blog posts. The aim of this post is to resume the main points and characteristics of its method and finally find possible gaps and vulnerabilities. So let’s start guys!

OpenBRR :

The main points of OpenBRR’s  Wikiperdia definition  are :

Taking in more technicaly way , what openBRR offers ?

  • 4 Phases/Levels  of Software Assessment ( Quick Assessment , Target User Assessment , Data Collection and Processing , Data Translation)
  • 8 classified criteria-metrics (Usability , Quality, Security, Performance , Scalability, Architecture, Support , Documentation)
  • Criteria is categorized into a tree hierarchy of 2 levels.

QSOS :

QSOS definition (by it’s community ) is :

QSOS is a method conceived to qualify, select and compare free and open source software in an objective, traceable and argued way. It is made available to all, under the terms of the GNU Free Documentation Licence ” . Furthermore QSOS provide a set of tools and editors in order to create your own criteria template (Template Editor , Sheet Editor , O3S , QSOS Engine, CVS Repository ). So it’s easy to find differences between openBRR and QSOS. Tecnicaly QSOS contains :

  • 4 steps (as a part of an iterative process): (Define , Access, Qualify , Select)
  • 5 classified criteria-metrics( Intrinsic durability , Industrialised solution , Integration , Technical adaptability , Strategy )
  • Criteria is categorized into a tree hierarchy of 3 levels.
  • Documentation , and more info available to the user.

Comparison and vulnerabilities 

No matter that a comparison could last , in my opinion a brief comparison and vulnerabilities detection  is always useful when talking about software (but not only). So differences always become when there no similarities .

Similarities

1)Each methodology proposes a predefined set of criteria for evaluating FlOSS projects.

2)Evaluation means  scoring the various criteria based on a standard scoring procedure. During the evaluation of a given FlOSS project, this step results in as- signing score to each criterion (always score as absolute).

3)During an evaluation, the absolute scores are weighted, by the users ,  based on their importance to the current evaluation context (weighted absolute scores as relative scores).

4)Decision can be taken based on the resulting relative scores.

Differences :

1) The order shown below represents the QSOS method.

2) OpenBRR suggests inverting point 2 and 3 so that users first select criteria relevant to their context and therefore
avoid scoring useless ones. Furthermore OpenBRR allows the creation of new criteria as well as the tailoring of the scoring procedure for criteria.

3) QSOS believes that the absolute scores obtained when applying the scoring procedures are universal. Hence, the scoring procedure for a particular version of a FlOSS Comparing Assessment Methodologies project only takes place once.

4 ) OpenBRR is a standard methodology but it assumes that every user instantiates it in a slight different way.

5) OpenBRR is at RFC stage where QSOS provide a set of tools and criteria-templates.

6) OpenBRR has famous sponsors [and also developed] (Carnegie Mellon West Center for Open Source Investigation, CodeZoo, SpikeSource, Intel ). On the other hand  QSOS created by Atos Origin and is a community based project.

7) QSOS provides 5 classified criteria-metrics where OpenBRR provides 8 classified criteria-metrics.

8) QSOS provides “rich” documentation and a very well organised web page for user. Besides OpenBRR only provides a “poor” web site.

Gaps

QSOS :

1) No matter provides a very useful set of tools , O3S criteria for “Software families” are only available in French language (in the project’s web page)

2) QSOS tree hierarchy of criterias make it more complicated compared with OpenBRR tree hierarchy.

3) Not many business support of this method, where OpenBRR is developed and sponsored by notable companies.

OpenBRR :

1) Absence of tools and abilities to make your own criteria in an easy and fast way.

2) Is at RFC state, where QSOS provides tools/sets for the user and is a community based project.

Conclusion

As a conclusion of this article , i would like to mention a disadvantage in common (of QSOS and OpenBRR) : Different criteria bring to us different scores, different scores bring to us different way of appliances. Is that a serious problem? Not always , sometimes becomes an advantage and sometimes a disadvantage. Let’s see :

The advantage is that each model provides it’s own criteria and it’s own iterative process to evaluate,edit and etc scores and data. The more available approaches for a software  the better is. On the other hand , the absence of a common-model (QUALOSS as defined by Jean-Christophe Deprez and Simon Alexandre) make the decision process more difficult and complicated. Finally the different approach and absence of a scalable based common-model sounds like the most possible answer in the question below :

” Would you buy a house constructed by a very famous company almost without mentioned your wishlist or would you construct your own house using “community” tools but defining your wishlist could be difficult process?”

No more thoughts , no more doubts….


Repository Comparison (CVS,Git(-hub-orious), Mercurial)

Imagine that you are a new programmer and you want to share your source , make commits and call  people to contribute on your source code , is there any tool that could help you? The answer is Yes you have more than one choices available. So which are the choices ? Is there any comparison between the available tools? Yes, just have a look :

According to the pie chart the highest percentage own the “Subversion” tool and after that is the “GitRepository”. So GitRepository owns 26 % when ” CVS ” and ” Mercurial” own 13 % and 2 %. (data and graph by ohloh.net). So between CVS , Git and Mercurial you will choose obviously Git.. Is there any other reason to choose Git? Yes!

A couple of days ago , i read a very interesting article about ” The 10 Most Important Open Source Projects od 2011″ in Linux.com . The projects listed in this article are :

– Hadoop

– Git

– Cassandra

– LibreOffice

– OpenStack

– Nginx

– jQuery

– Node.js

– Puppet

– Linux

And some information about Git : “Speaking of ubiquity, how about that Git, huh? Linus Torvalds other little hobby project has not only done good for Linux, but it’s hugely popular for FOSS projects. If you’re working on a new open source project, the odds are pretty good that you’re going to be using Git over any other distributed version control system (DVCS). Git isn’t just a popular tool, it’s the foundation of one of the most popular gathering spots around the Web for open source development: GitHub. It’s also being used and offered by Gitorious, SourceForge.net, Google Code Hosting, and pretty much every other major platform for hosting FOSS projects.”

Finally do you still have doubts about which tool you will choose?



Start programming with Python? Why not?

I found by chance a interesting and also funny book for Python. I thought it could be a good idea to share with you! But let me give you some details :

Snake Wrangling for Kids” is a printable electronic book, for children 8 years and older, who would like to learn computer programming. It covers the very basics of programming, and uses the Python 3 programming language to teach the concepts. ”

The book is available at :

1) http://code.google.com/p/swfk/ (Book’s web site)

2) http://code.google.com/p/swfk/downloads/detail?name=swfk-linux-0.7.7.zip&can=2&q= (Linux Edition)

Note that there are 3 different versions of the book (one for Mac, one for Linux and one for Windows)


Python and other programming languages (Ohloh.net)

Today i found by chance some details about Python (http://www.ohloh.net) :

– What is Ohloh ?

Ohloh is a website which provides a web services suite and online community platform that aims to map the landscape of open source software development. It was founded by former Microsoft managers Jason Allen and Scott Collison in 2004 and joined by the developer Robin Luckey. As of March 2011 the site lists 441,250+ projects

– Data and statistics about Python  :

Total Lines :  402,457,858
Code : 253,362,520
Comments : 88,805,752 (26.0%)
Blanks : 60,289,586

But i think that more important are the graphs (available on this site). The first graph  compares the languages picked by the user (in our case only Python). The height of each point on the graph is the sum of all commits in that month that included at least one line of change for that language. A commit that changed two languages will be counted for each language.Languages are always charted over 20 years, and do not include the most recent month. The most recent month is excluded because Ohloh does not yet have complete information for it. So let’s have a look on the graph :

According to the graph during the last two years (2010-2011) the percentage rose up 1,5 % approximately. Furthermore an other graph mentions the data above. On the second graph is represented a comparison between C, C++ and Python.

No matter which language you prefer , it shown obviously that Python rises up the last 5 years  (2005-2011) when C and C++ do fall. I think that Python do have a higher percentage , in comparison with the other 2 languages , due to its  appliance (Django , PyQT, Py GTK) , scalability and flexibility.


Find your GNU/Linux friends around the world

I use Gnu/Linux since 2007. It is a fact that finding other people who also use the same OS  is not always easy…You search people in order to express your ideas and your thoughts, maybe you spent hours talking in a IRC channel asking for help…but finally you talk with people and sometimes you are not able to see all them “pointed” in map…Could you imagine a platform (or maybe software) which would “serve” this kind of feature? I mean to “point” Gnu/Linux users around the world?  Personally , until yesterday i couldn’t…But now i don’t imagine i just enjoy!

Well , a friend of mine, Efstathios Chatzikyriakidis  implemented  this wish. He made a map where all over the world  are able to state their position in the map  and the distribution of Gnu/Linux they use as well. This project is called  OSHACKERS. OSHACKERS is licensed  under  GNU GPLv3.

So the question is  : “Are we spots (or points ) in the map or interactive/powerful users of Gnu/Linux ? ”

The answer is  : “It’s up to how often you see people around you using Gnu/Linux…”

So Master classmates, and other  Gnu/Linux users the conclusion of this post is :

No more thoughts , no more words just “click” the white  rabbit below….and be registered


LSWC’11 , Zaragoza, Spain Report (EN)

LSWC’11 Zaragoza, Spain

A conference with  600 participants and 100 open-source companies…something very interesting  and for me the first conference outside of my country…

I leave and study in Madrid but i thought it would be a good idea taking part in the LSWC’11..let’s see what happened in the conference and which presentation i saw…

Day  1st (9 November)

I woke up very early so as to take the bus and go to “Ayutamiento de Zarogoza’s building”. I arrived about  8 o’clock for  the “Accreditations” so i had free time to enjoy a coffee in  “Cafeteria el Seminario” .  At 9 o’clock i got into  Ayuntamiento de Zaragoza, so as to be accredited . The truth is that it wasn’t difficult to find the conference cartel  (poster) and the “Accreditations place”  because nearby there were 3 conference posters. ([1] , [2] , [3] ). About  10 o’clock  took part the  “Conference Opening”.  During the Opening  speech , Juan Alberto Belloca (Alcade de Zaragoza) presented the adoption and use of FLOSS in Aragon the last years. Afterwards , an interesting presentation took place “Firm and digital identity with Sinadura Suite” . This suite it’s a free software product (builed in Java) offered by  Zylk, has to do with the firm and digital identity in Spain (DNI). At  11.30 was the right moment for the (Coffee Break). After the Coffee Break  another presantation took place , “Web development  using  express.js (node.js + MVC)” . Express.js offers a very clever way to programm in Javascript. I really enjoyed this conference because there have been presentations not only of commercial interest although presentations of general interest like   “The social networks in web 2.0” (Ana Frede). After this interesting presentation , as usually the lunch time begun. I attended another presentation,which in my opinion was important enough,such as the others “Migrasion from  Google Apps to Zimbra OSE (Consorci Lleidatá)” . I believe that right now,there is a lack of applications that could replace Google Apps. At 17.00 in Salon Actos,started another speach of legal interest  “Software patents : the empire strikes back”   (by Alberto Barrionuevo). Though,I insist that this subject is not only of legal interest,as the informatics people have to be aware of what is up with software patents. After this speech, Alberto Barrionuevo, gave another one, of commercial interest  “OpenERP Plus : the most complete implementation of free empresial management ” ,over a version of OpenErp,more commercialized,that OPENTIA    gave out in the last years. This was how the first day in the conference passed.

At night,I went out for a   beer

Some videos of the first day of the conference are available here:

“Conference Openening “[vid1]

” Software Patents”  [vid2]

” OpenERP Plus ” [vid3]

2nd Day (November 10th)

The second day was slightly different from the first one. at 10.30 the most important speech for me,started in Aula 3. Certifications is something many people want to obtain,that’s why  “Que es la Certificacion LPI” gave us all, all the needed information. Henry Chalup Dergam , the Director Manager of  LPI in Spain , presented the certification and all the connected information. During the presentation in aula 3, I saw smth that made me happy. in the city hall of zaragoza,they use a distribution, based upon openSUSE 11.2, named AZLinux.  The last presentation I attended was in AZLinux. After the Coffe Break, at 12.00, I started the Merengue. The subject of the presentation was “Merengue : CMS based on Django” .Merengue is a CMS based on Django, and despite the fact that I don’t know much of Django, it seemed easier to use and program with Merengue than with Django. The last speech I attended was “AZLinux. Functional Characteristics” ” . AZLinux  is based on openSUSE 11.2. The CityHall now uses free software in all its computers and I loved the fact that it was a policy of the Aragon Government, this use of free software in the public sector.For this, AZLinux uses the Migasfree Package Manager, a package manager very useful and easy-to-use.In the   Ayutamiento de Zaragoza they inserted a  migration from propietary software into free software.

Some videos of the second day are available here :

” Merengue : CMS based on Django ” [vid4]

Also all the videos of the conference are available here :

[Videos]

Finally,LSWC’11 was a conference I liked. I met many people passionate with FreeSoftware.Not only company members but also persons like me,simple individuals.As Francisco Javier Solans Benedi (President of Cesla ) in [ vid1 ]  (13:00), “It’s a fact that Free Software is an axioma,that came to stay“, ,that’s why many autonomous communities in Spain use FreeSoftware. It’s sure that in the future,I will participate in more conferences and events like this,during my stay in Spain.

Rousinopoulos Athanasios-Ilias