Blog - page 11

HighlightInterface

I added another Kate interface, this time to access some of the highlighting information:

what’s the Attribute for a given default style right now? Default styles are those known from syntax files, e.g. dsKeyword, dsFunction,…
what are used Attributes in a given line and what range do they occupy?
what modes do we embed? E.g. PHP embeds HTML, JavaScript, CSS, …
what mode is used at a given Cursor position?

This made it possible to port the “Export to HTML” action to a real plugin. If you come up with other output formats I might add them, I wondered about LaTeX support… might do this at some point.

This should also make it possible to use KatePart in other applications and than export the highlighting to a different format, e.g. a Flake shape for Koffice. Afaik this is actually planned by The_User - lets see if it works out!

KDevelop & KWrite/Kate hacksprint 2010 in Berlin (November 16, 2009)

Hey everybody!

If you are a KDevelop and/or Kate/Kwrite developer and do not read the mailing lists: There’s a hack sprint coming up in Berlin in 2010. I think there’ve been enough sprints in Berlin already so that you know it’s a great city for such an event. Though this time it won’t be at KDAB or Nokia offices, but at the Physics Faculty of the FU-Berlin. Since I (currently) work there as an IT admin, it was my first choice and worked out. I hope it will be a good location for the meeting. If you want to attend, vote on doodle:

http://www.doodle.com/vkyh9up9794zr4s8

But you probably also should register either on the KDevelop or KWrite mailing lists so I have some kind of way to contact you.

PS: in unrelated news I’ll do an internship at KDAB next year! yay

Improving KDevelop-PG-Qt (October 26, 2009)

Good news everyone :)

Documentation

After years of pretty much no documentation (except looking at the sources… ), The_User aka. Jonathan Schmidt-Dominé started documenting the parser generator that is used for most KDevelop language plugins (java, python, php, …). You can find it here: http://techbase.kde.org/Development/KDevelop-PG-Qt_Introduction

It has to be improved and more examples have to be put in there, but it’s already a huge improvement over the situation before…

Performance

In related news I did some profiling on the parsing of the quite big file that includes all internal PHP declarations (i.e. all functions, classes, definitions,…). It drops in at a whopping 1.9M, with ~80k lines. Well, turns out that this showed a pretty easy to fix bottleneck in KDevelop-PG’s LocationTable, which used to use a linear lookup algorithm. Profiling showed that nearly 75% was spent in that function. But I used the past tense for a reason:

I replaced it with an algorithm that combines a relative search (i.e. relative to the last lookup) with a binary search fallback. That’s comparatively blazingly fast. I added some benchmarks to KDevelop-PG-Qt that proofs that (benchmark below run with release mode build):

Easily access quassellogs from the CLI (October 22, 2009)

Quassel is really a cool program. I like how I can use it from everywhere and access the same set of data. Now using IMAP and Quassel I’d really look forward for similar shared access to other IMs, but that’s not the topic of this blog post.

What I want to introduce is a new addition to my set of shell helpers, called quassellog:

    $ quassellog -u milian -b "#kdevelop" | tail -n 1
    [2009-08-27 13:09:11]  milian > hi all
    $ quassellog -b "#kdevelop" | tail -n 1
    [2009-08-27 16:43:35]  Fersis!n=Fersis@190.245.176.231 > yeah i did
    $ quassellog
    quassellog [-u USER] [-b BUFFER] [PATTERN]
     
     -u USER        show only messages from users, who have USER at
                    the start of their sender name.
     
     -b BUFFER      show only messages in this buffer
                    valid buffers are:
    ##linux                 #khtml                  &IMP                    ...SNIP...
     
     PATTERN        a simple pattern, use * for wildcard matching
     
    NOTE: order of options is not exchangable, i.e. first -u, then -b then pattern...

first experience with Archlinux (October 18, 2009)

So, I kinda messed up my desktop right after the upgrade to karmic, because I was too greedy for performance and converted my root file system to ext4. Well, that worked like a charm on my laptop, but it broke my desktop. This is in no way karmic’s fault, it’s my own misbehavior. Thankfully I could rescue most of my data.

Since I’d had to reinstall anyways, I decided to finally try out Archlinux. I find the rolling release mantra very intriguing. Together with a “simpler” packaging, namely no splitting between -dev and -dbg packages like debian/ubuntu does, this is destined to be a good environment for a developer. I always hated it to track down missing -dev packages when compiling software. And don’t get me started on outdated software in repos… I just compiled kdelibs and the only missing build dependency was hspell, that I don’t need anyways. Under Jaunty I had to compile stuff from kdesupport to fulfill updated dependencies. And the list of not-found optional dependencies was huge, since I did not spent time to install all those -dev packages by hand…

KDevelop PHP digest - August to Oktober 2009 (October 02, 2009)

Hi there again! I’ve been silent again on my blog, but didn’t rest on development. In the one and a half months since the last digest, I started writing a PHP application This finally made me eat my own dog food :). It resulted in lots of polishing and quite a few bug fixes for the PHP plugin in KDevelop. Here’s a list of what I think are the notably changes since the last digest:

(Note: to view screenshots, go to the bottom of this article.)

refactoring of parts of the Code Completion code, should already result in faster code under certain situations
properly mark constants as “Kind: Constant” in the declaration tooltips
offer argument hints for ctors during code completion in class init statements
greatly improve the generate inline documentation of built-in PHP functions, classes, properties etc. pp.
- add documentation of public properties
- support aliased functions (thanks to Victor Grischenko for his patch)
- show more/all documentation, and not only the first paragraph
- fix type-lookup
- don’t get confused when a documentation file documents both, a method and a function (greatly improves e.g. MySQLi documentation)
don’t offer “jump to declaration” for built-in PHP declarations
add support for list(...) statement
cleanup code-completion list, esp. show the return type of functions in the prefix field, and not something a la “function ReturnType ($arg1, $arg2, …)”
improve the code-completion for include/require statements
add language constructs to code completion (e.g. class, while, foreach, print, …)
show declaration tooltip for magic constants, showing their current value
make functions, methods and classes case-insensitive, just like PHP handles them
some performance improvements, especially in code completion and parsing of the generated file containing php-internal declarations
lots of bug fixes, don’t want to iterate them all ;-)

Kate linter plugin (September 28, 2009)

Just a quicky: I wrote a little plugin for KTextEditor which supplies you with basic error checking when you save documents. Currently only PHP (via php -l) and JavaScript (via JavaScript Lint) are supported.

Screenshots

Requirements

usual tools for compiling C++, e.g. gcc.
cmake
Qt development packages, i.e. under Ubuntu: sudo aptitude install libqt4-dev
KDE 4.2 with development packages for kdelibs and kdebase, i.e. under Ubuntu: sudo aptitude install kdebase-dev kdebase-workspace-dev kdelibs5-dev. Note: You’ll need the experimental KDE 4.2 packages activated as of now, see for example the Kubuntu news on KDE 4.2 RC1 for hints.
proper setup of environment variables, read this techbase article for more information. the .bashrc linked there should be enough for most people
For PHP support: a PHP executable which supports the -l switch for linting
For JavaScript support: a JavaScript Lint executable, you could download and compile the sources for example.

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Blog - page 11

Recent Posts

Will code for food (December 22, 2009)

PHP and PHP-Docs plugins now up for review (meaning: SVN location moved!) (December 18, 2009)

Real FOSS appreciation (December 07, 2009)

Kate Love: HighlightInterface, Autobrace (November 23, 2009)

HighlightInterface

KDevelop & KWrite/Kate hacksprint 2010 in Berlin (November 16, 2009)

Improving KDevelop-PG-Qt (October 26, 2009)

Documentation

Performance

Easily access quassellogs from the CLI (October 22, 2009)

first experience with Archlinux (October 18, 2009)

KDevelop PHP digest - August to Oktober 2009 (October 02, 2009)

Kate linter plugin (September 28, 2009)

Screenshots

Requirements