Michal Čihař - Blog Archives for English

Weekly phpMyAdmin contributions 2016-W19

After week of vacation I got back to work. There was lot of bug screening this week, it seems that people are finally migrating to 4.6 and discovering new problems there. Fortunately 4.6.1 has been released fixing most annoying issues.

Several issues were quite tricky to debug issue happening solely on Windows servers and looked quite tricky from beginning (breaking utf-8 chars). It turned out to be caused by preg_replace calls on the content, which could break utf-8 chars in some cases.

Handled issues:

Fifteen years with phpMyAdmin and free software

Today it's fifteen years from my first contribution to free software. I've changed several jobs since that time, all of them involved quite a lot of free software and now I'm fully working on free software.

The first contribution happened to be on phpMyAdmin and did consist of Czech translation:

Subject: Updated Czech translation of phpMyAdmin
From: Michal Cihar <cihar@email.cz>
To: swix@users.sourceforge.net
Date: Mon, 14 May 2001 11:23:36 +0200
X-Mailer: KMail [version 1.2]

Hi

I've updated (translated few added messages) Czech translation of phpMyAdmin. 
I send it to you in two encodings, because I thing that in distribution 
should be included version in ISO-8859-2 which is more standard than Windows 
1250.

Regards
    Michal Cihar

Many other contributions came afterwards, several projects died on the way, but it has been a great ride so far. To see some of these you can look at my software page which contains both current and past projects and also includes later opensourced tools I've created earlier (mostly for Windows).

These days you can find me being active on phpMyAdmin, Gammu, python-gammu and Wammu, Debian and Weblate.

Changed Debian repository signing key

After getting complains from apt and users, I've finally decided to upgrade signing key on my Debian repository to something more decent that DSA. If you are using that repository, you will now have to fetch new key to make it work again.

The old DSA key was there really because my laziness as I didn't want users to reimport the key, but I think it's really good that apt started to complain about it (it doesn't complain about DSA itself, but rather on using SHA1 signatures, which is most you can get out of DSA key).

Anyway the new key ID is DCE7B04E7C6E3CD9 and fingerprint is 4732 8C5E CD1A 3840 0419 1F24 DCE7 B04E 7C6E 3CD9. It's signed by my GPG key, so you can verify it this way. Of course instruction on my Debian repository page have been updated as well.

Weekly phpMyAdmin contributions 2016-W17

Last week was quite split into many smaller tasks - working on our libraries (both SQL parser and motranslator got new releases with bug fixes), fixing bugs for upcoming 4.6.1 and working on documentation.

From the libraries side, probably most visible is release of motranslator 1.0, just to claim it's now stable enough. Let's see if somebody else will pick it up as well or it will stay only for our use.

Most time was however spent on our documentation. We've agreed to move wiki from our server to GitHub wiki and reduce content available on the wiki. So far it's really mixture of user documentation, notes and developer documentation. The final shape should be that wiki will contain only developer documentation and all end user documentation will go to our documentation. So far I've gone through about half of user docs pages, deleted duplicated ones and moved content to our documentation. It is most visible on the user guide which now contains way more information and hopefully it will get more complete in near future.

Handled issues:

Weblate 2.6

Going back to faster release cycle, Weblate 2.6 has been just released. There is improved support for Python 3 or brand new HTTP REST API.

Full list of changes for 2.6:

  • Fixed validation of subprojects with language filter.
  • Improved support for XLIFF files.
  • Fixed machine translation for non English sources.
  • Added REST API.
  • Django 1.10 compatibility.
  • Added categories to whiteboard messages.

If you are upgrading from older version, please follow our upgrading instructions.

You can find more information about Weblate on https://weblate.org, the code is hosted on Github. If you are curious how it looks, you can try it out on demo server. You can login there with demo account using demo password or register your own user. Weblate is also being used https://hosted.weblate.org/ as official translating service for phpMyAdmin, OsmAnd, Aptoide, FreedomBox, Weblate itself and many other projects.

Should you be looking for hosting of translations for your project, I'm happy to host them for you or help with setting it up on your infrastructure.

Further development of Weblate would not be possible without people providing donations, thanks to everybody who have helped so far! The roadmap for next release is just being prepared, you can influence this by expressing support for individual issues either by comments or by providing bounty for them.

motranslator 1.0

After two months since it's announcement I think it's good time to release 1.0 version of motranslator. This release doesn't bring any major changes, it's more to indicate that the library is stable :-).

The motranslator is a translation library used in current phpMyAdmin master (upcoming 4.7.0) with focus on speed and memory usage. It uses Gettext MO files to load the translations. It also comes with testsuite (100% coverage) and basic documentation.

Recommended way to install it is using composer from Packagist repository:

composer require phpmyadmin/motranslator

The Debian package will be available probably at point phpMyAdmin 4.7.0 will be out, but if you see need to have it earlier, just let me know.

Weekly phpMyAdmin contributions 2016-W16

Last week was again focused on bug fixing due to increased amount of received bug reports on 4.6.0 release. Fortunately most of the annoying bugs are already fixed in git and will be soon released as 4.6.1.

Another bigger task which was started last week was wiki migration. So far we've been using own wiki running MediaWiki and we're migrating it to GitHub wiki. The wiki on GitHub is way simpler, but it seems as better choice for us. During the migration all user documentation will be merged into our documentation, so that it's all in one place and wiki will be targeted on developers.

Handled issues:

Testing Sphinx documentation with Jenkins

While reviewing comments on phpMyAdmin wiki (which we're shrinking down to developer documentation and moving end user documentation to proper documentation) I've noticed that people complained there on broken links in our documentation. Indeed there was quite some of them as this is something nobody really checks. It seems like obvious task to automate.

It seemed to me as obvious as somebody had to do it already. Unfortunately I have not found much, but at least there was Using Jenkins to parse sphinx warnings. This helps with the build warnings, but unfortunately I found no integration for the linkcheck builder. Fortunately it's quite easy with the Jenkins Warnings plugin to write custom parsers and to parse linkcheck output as well.

The Sphinx output parser based on above link can be configured like:

Regular Expression:

^(.*):(\d+): \((.*)\) (.*)

Mapping Script:

import hudson.plugins.warnings.parser.Warning

String fileName = matcher.group(1)
String lineNumber = matcher.group(2)
String category = matcher.group(3)
String message = matcher.group(4)

return new Warning(fileName, Integer.parseInt(lineNumber), "sphinx", category, message);

Example Log Message:

Percona-Server-1.0.2-3.rst:67: (WARNING/2) Inline literal start-string without end-string.

The Sphinx linkcheck output is quite similar:

Regular Expression:

^(.*):(\d+): \[([^\]]*)\] (.*)

Mapping Script:

import hudson.plugins.warnings.parser.Warning

String fileName = matcher.group(1)
String lineNumber = matcher.group(2)
String category = matcher.group(3)
String message = matcher.group(4)

return new Warning(fileName, Integer.parseInt(lineNumber), "sphinx-linkcheck", category, message);

Example Log Message:

faq.rst:793: [broken] http://www.hardened-php.net/: <urlopen error [Errno -3] Temporary failure in name resolution>

All you need to do now is to enable these in your Jenkins project, let the Sphinx parse output and the Sphinx linkcheck one file generated by linkcheck (usually _build/linkcheck/output.txt). The result can be found on the phpMyAdmin CI server.

Weekly phpMyAdmin contributions 2016-W15

After weeks of bugfixing my focus has again shifted to refactoring and code cleanups.

One big area was charsets and collations, which were cached in the session data so far. This had bad effect of making the session data quite huge leading to performance loss on every page, while the cached information is needed only on few pages. I've removed this caching, cleaned up the code and everything seems to be behave faster, even the pages which used cached content in the past.

Second area was handling of file uploads. Historically we had two copies of code doing almost the same thing. I've tried to merge them and use File class for all the operations. However this code was built to handle lot of corner cases, so I'm a bit afraid of breaking some special setups.

Handled issues:

Gammu 1.37.2

Yesterday, Gammu 1.37.1 and Gammu 1.37.2 have been released. As usual it collects bug fixes and minor improvements.

Full list of changes in 1.37.1:

  • Properly report errors in HEX encoded strings from SMSD SQL backends.
  • Configurable SMSD table names.
  • Improved support for Huawei E303.
  • Improved support for Vodafone K4511.
  • Improved support for Telit M2M modules.

Full list of changes in 1.37.2:

  • Fixed compilation of SMSD.

Would you like to see more features in Gammu? You an support further Gammu development at Bountysource salt or by direct donation.