The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for November, 2018

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Delphi XE8..Tokyo 10.2 Release 3: Access Violation at address xxxxxxxx in module ‘delphicoreide###.bpl’ whenever I try to create a new unit or form. How to fix it?

Posted by jpluimers on 2018/11/30

[WayBack] Ouch: “It’s due to some Castalia code, that’s merged in Delphi since XE8. It’s only possible to reduce this issue, so it will happen less often… – Thomas Mueller (dummzeuch) – Google+

“It’s due to some Castalia code, that’s merged in Delphi since XE8. It’s only possible to reduce this issue, so it will happen less often. Use: Tools – Options – Editor Options – Color – Structural Highlighting and switch everything off. Looking at how the code is integrated into the IDE, this results in less editor parsing and repainting. Irrespective of that, the handler that causes the Access violation is still attached to the editor. So basically, we will have to wait for this to be fixed in 10.3.”

The errors in 10.2 are related to “EditorStructuralHighlight.TStructuralHighlighter.EvQuery” – Google Search, but older versions can have a different path.

Lets hope that by a new Delphi version has been released that fixes this, but do not expect older versions to get fixes for it.

For XE8, it is enough to disable Castalia, which is on the list of packages to disable in …/Native/Delphi/Scripts/List-Delphi-Installed-Packages.ps1.

More recent versions have the old Castalia code base much more rightly integrated, so the only way is to disable Structural Syntax Highlighting in the Editor options.

More at:

I have seen this happen too, but so intermittently that I could not point it back to this code (especially since I usually have Model Maker Code Explorer and GExerts loaded which makes it harder to trace back issues to actual Delphi things).

–jeroen

Posted in Delphi, Development, Software Development | 2 Comments »

Design your own visual maps with data points: Eerste stapjes in LocalFocus

Posted by jpluimers on 2018/11/30

[WayBack] Eerste stapjes in LocalFocus: [WayBack] Zwemwaterkwaliteit Nederland 20180724

Via: [Archive.is] Hitte in de stad: code oranje uitgeroepen – Amsterdam – PAROOL

–jeroen

Posted in Power User, Usability, User Experience (ux) | Leave a Comment »

how can I free up space on /boot as “openSUSE-2014-462” fails to install on openSUSE 12.3 x86_64

Posted by jpluimers on 2018/11/30

From a long time ago:

[WayBack] how can I free up space on /boot as “openSUSE-2014-462” fails to install on openSUSE 12.3 (x86_64):

Installation of kernel-desktop-3.7.10-1.40.1 failed:
(with --nodeps --force) Error: Subprocess failed. Error: RPM failed:     installing package kernel-desktop-3.7.10-1.40.1.x86_64 needs 16MB on the /boot filesystem

Based on that thread, I figured out the steps:

Read the rest of this entry »

Posted in *nix, Linux, openSuSE, Power User, SuSE Linux | Leave a Comment »

Not all Fritz!Box devices can be upgraded to the most recent firmware

Posted by jpluimers on 2018/11/30

I forgot to document this earlier.

Many Fritz!Box devices cannot be upgraded to recent firmwares. The behaviour differs on hardware revisions of the same model. I’ve seen it happen on Fritz!Box 7360 devices, but others are could be affected too.

You can get the firmware revision using the trick here: FRITZ!Box call http://fritz.box/cgi-bin/system_status.

If your hardware revision is affected, do not expose it to the outside world.

You could still turn it into a local switch though: [WayBack] Convert FRITZ!Box 7360 to Managed Switch (or even Access Point) having it’s own IP address: Setting up the FRITZ!Box as an IP client.

I did this before even discovering about the hardware revision limits as I wanted to keep the full phone history when migrating from ADSL to fiber (which came with a brand new Fritz!Box 7490) and could use the extra LAN ports.

Fritz!Box 7360 hardware revision v1: limited to firmware 06.3x

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Posted in Fritz!, Fritz!Box, Internet, Power User | Leave a Comment »

Some links that might help migrating from Mantis to GitLab

Posted by jpluimers on 2018/11/29

I might give a few of these a shot:

–jeroen

Posted in Development, DVCS - Distributed Version Control, GitLab, Software Development, Source Code Management | Leave a Comment »

Parsing simple html in Python

Posted by jpluimers on 2018/11/29

Was working to get fritzcap to emit a list of interfaces so I could specify which one to capture.

For that I needed to parse the output of http://fritz.box/capture.lua which consists of HTML fragments like below.

What I needed was for each consecutive entries of [WayBack] th and first [WayBack] button tags:

  • content of the th tag
  • content of the value attribute of the button tag having a type="submit" attribute and name=start attribute

So before starting to work on it, I created [WayBack] In order to fix #5, print a list of available interfaces to potentially capture from · Issue #6 · jpluimers/fritzcap

The goal was to get a series of key/value pairs:

4-138 = AP2 (2.4 + 5 GHz, ath1) - Interface 1
4-137 = AP2 (2.4 + 5 GHz, ath1) - Interface 0
4-132 = AP (2.4 GHz, ath0) - Interface 1
4-131 = AP (2.4 GHz, ath0) - Interface 0
4-129 = HW (2.4 GHz, wifi0) - Interface 0
4-128 = WLAN Management Traffic - Interface 0a

So I built a class descending from [WayBack] HTMLParser — Simple HTML and XHTML parser that ships with the [WayBack] Python standard libraries.

If in the future I need more complex HTML parsing, then these links will help me choosing more feature rich parsers:

Back to the HTMLParser descendant in interfaces_dumper.py which can basically be condensed down to the code below.

  • handle_data is called for both start tags and end tags. The th value in data is only present in the start tag (at the time of end tag the data is empty), so you need to keep track of both last_start_tag and last_end_tag.
  • handle_endtag maintains last_end_tag to help handle_data.
  • handle_starttag maintains last_start_tag to help handle_data and also handles the button behaviour.
    • The buttonis only relevant if it has type="submit" and name="start" and a value attribute in that order.
    • Output is in data which is an array of key/value pairs.

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Posted in Development, Fritz!, Fritz!Box, fritzcap, Internet, Power User, Python, Scripting, Software Development | Leave a Comment »

UptimeRobot is written in PHP and runs on IIS

Posted by jpluimers on 2018/11/28

In [WayBack] Jeroen Pluimers‏ @jpluimers: Every now and then editing @uptimerobot entries failed. Just “HTTP Error 503.4 – Service Unavailable The FastCGI pool queue is full” 1/2 I found out that UptimeRobot:

There is also a maintenance page at uptimerobot.com/maintenance.php#tvMode [Archive.is] and uptimerobot.com/maintenance.php?c-e [Archive.is]. If you get to those, then retry in ~10 minutes as sometimes it takes that long for an update to be processed.

Sometimes setting up multiple Android devices for the same uptimerobot account can be a bit of a hassle: [WayBack] Uptime Robot on Twitter: “Once logged in to the account from another Andriod device, that device will be added as an alert contact too.… “.

All in all it is still a nice tool (:

–jeroen

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Posted in *nix, Development, IIS, Monitoring, PHP, Power User, Scripting, Software Development, Uptimerobot, Web Development | Leave a Comment »

A few observations on Python while I made my first steps into it

Posted by jpluimers on 2018/11/28

A while back, I made my first steps into Python.

Coming from a mixed language back-ground (including Pascal, Delphi, C#, SQL, batch files, PowerShell, bash, C, Java) it was an interesting experience.

A few observations:

More observations likely to follow.

–jeroen

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Posted in Development, Python, Scripting, Software Development | Leave a Comment »

An In Depth Guide Into a Ridiculously Simple API Using .NET Core

Posted by jpluimers on 2018/11/27

Since I am going to be involved with building some REST API servers and clients in .NET, here are some links to get me up to speed.

Posted in .NET, .NET ORM, ASP.NET, C#, Development, EF Entity Framework, NHibernate, Software Development | Leave a Comment »

web servers and pre-compressed content

Posted by jpluimers on 2018/11/27

One of my sites is about a lot of static content which is mostly generated too. So I want to put some research into pre-compressing that content before serving it.

Here are some links that might put me in the right direction:

–jeroen

Posted in *nix, Apache2, Power User | Leave a Comment »

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