The Wiert Corner – irregular stream of stuff

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

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Archive for the ‘Software Development’ Category

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Coping with UTF-16 / UCS-2 little endian in Batch files: numbers from WMIC

Posted by jpluimers on 2016/11/22

A while ago, I needed to get the various date, time and week values from WMIC to environment variables with pre-padded zeros. I thought: easy job, just write a batch file.

Tough luck: I couldn’t get the values to expand properly. Which in the end was caused by WMIC emitting UTF-16 and the command-interpreter not expecting double-byte character sets which messed up my original batch file.

What I wanted What I got 
wmic_Day=21
wmic_DayOfWeek=04
wmic_Hour=15
wmic_Milliseconds=00
wmic_Minute=02
wmic_Month=05
wmic_Quarter=02
wmic_Second=22
wmic_WeekInMonth=04
wmic_Year=2015

Day=21
wmic_DayOfWeek=4
wmic_Hour=15
wmic_Milliseconds=
wmic_Minute=4
wmic_Month=5
wmic_Quarter=2
wmic_Second=22
wmic_WeekInMonth=4
wmic_Year=2015

WMIC uses this encoding because the Wide versions of Windows API calls use UTF-16 (sometimes called UCS-2 as that is where UTF-16 evolved from).

As Windows uses little-endian encoding by default, the high byte (which is zero) of a UTF-16 code point with ASCII characters comes first. That messes up the command interpreter.

Lucikly rojo was of great help solving this.

His solution is centered around set /A, which:

  • handles integer numbers and calls them “numeric” (hinting floating point, but those are truncated to integer; one of the tricks rojo uses)
  • and (be careful with this as 08 and 09 are not octal numbers) uses these prefixes:
    • 0 for Octal
    • 0x for hexadecimal

Enjoy and shiver with the online help extract:
Read the rest of this entry »

Posted in Algorithms, Batch-Files, Development, Encoding, Floating point handling, Scripting, Software Development, UCS-2, UTF-16, UTF16 | Leave a Comment »

Hope this doesn’t repeat itself…

Posted by jpluimers on 2016/11/18

Nice error starting Delphi XE8:

[Window Title]
Error

[Content]
Registration procedure, Dbexpressentimpl.Register in package c:\program files (x86)\embarcadero\studio\16.0\Bin\DataExplorerDBXPluginEnt220.bpl raised exception class EWrapperError: Parameter MetaClass cannot be nil.
Do you want to attempt to load this package the next time a project is loaded?

[Yes] [No]

–jeroen

Posted in Delphi, Delphi XE8, Development, Software Development | Leave a Comment »

Why I always disable Castalia in Delphi

Posted by jpluimers on 2016/11/18

I wrote about disabling Castalia before. This is yet another reason why I disabled it: on a fresh install it will throw errors at startup like this one in XE8: [WayBack] http://qc.embarcadero.com/wc/qcmain.aspx?d=139278

[20441569]{coreide220.bpl} IDEKbd... (Line 586, "IDEKbd.pas" + 0) + $79D
[20441523]{coreide220.bpl} IDEKbd... (Line 586, "IDEKbd.pas" + 0) + $757
[2044168B]{coreide220.bpl} IDEKbd... (Line 586, "IDEKbd.pas" + 0) + $8BF
[2078892A]{coreide220.bpl} KbClient.TKeyboardServices.AddKeyBinding (Line 1455, "KbClient.pas" + 10) + $19
[0DD556A9]{Castalia220.bpl} Castalianavbar.TCastaliaNavToolbarKeyBinding.BindKeyboard + $4D
[2078746B]{coreide220.bpl} KbClient.TIDEKBDFrameAPI.KeyboardChanged (Line 521, "KbClient.pas" + 10) + $16
[20788AF5]{coreide220.bpl} KbClient.CheckUpdate (Line 1490, "KbClient.pas" + 3) + $6
[20788C7E]{coreide220.bpl} KbClient.TKeyboardServices.AddKeyboardBinding (Line 1527, "KbClient.pas" + 31) + $2
[50067002]{rtl220.bpl } System.@IntfCast (Line 36449, "System.pas" + 12) + $0
[0DD55629]{Castalia220.bpl} Castalianavbar.TCastaliaNavToolbarInstallerD8.WndProc + $2D
[2108A075]{designide220.bpl} Events.TEvent.Send (Line 165, "Events.pas" + 2) + $11
[0041D2B7]{bds.exe } AppMain.PostCreateInit (Line 2095, "AppMain.pas" + 72) + $B
[50682FE9]{vcl220.bpl } Vcl.Controls.TControl.WndProc (Line 7245, "Vcl.Controls.pas" + 91) + $6
[50687B91]{vcl220.bpl } Vcl.Controls.TWinControl.WndProc (Line 10079, "Vcl.Controls.pas" + 158) + $6
[5068A86D]{vcl220.bpl } Vcl.Controls.TWinControl.Invalidate (Line 12027, "Vcl.Controls.pas" + 0) + $9
[500605B4]{rtl220.bpl } System.TMonitor.TryEnter (Line 17939, "System.pas" + 10) + $0
[507C1F58]{vcl220.bpl } Vcl.Forms.TCustomForm.WndProc (Line 4427, "Vcl.Forms.pas" + 206) + $5
[506871B0]{vcl220.bpl } Vcl.Controls.TWinControl.MainWndProc (Line 9786, "Vcl.Controls.pas" + 3) + $6
[50172DF4]{rtl220.bpl } System.Classes.StdWndProc (Line 16882, "System.Classes.pas" + 8) + $0
[507CB41F]{vcl220.bpl } Vcl.Forms.TApplication.ProcessMessage (Line 10352, "Vcl.Forms.pas" + 23) + $1
[507CB44A]{vcl220.bpl } Vcl.Forms.TApplication.ProcessMessages (Line 10374, "Vcl.Forms.pas" + 1) + $4
[0041DE2B]{bds.exe } AppMain.TAppBuilder.ApplicationActivated (Line 2264, "AppMain.pas" + 0) + $7
[50828C27]{vcl220.bpl } Vcl.AppEvnts.TCustomApplicationEvents.DoActivate (Line 201, "Vcl.AppEvnts.pas" + 1) + $E
[50829289]{vcl220.bpl } Vcl.AppEvnts.TMultiCaster.DoActivate (Line 422, "Vcl.AppEvnts.pas" + 5) + $8
[507CA8E6]{vcl220.bpl } Vcl.Forms.TApplication.WndProc (Line 9949, "Vcl.Forms.pas" + 126) + $C
[50172DF4]{rtl220.bpl } System.Classes.StdWndProc (Line 16882, "System.Classes.pas" + 8) + $0
[507CC78D]{vcl220.bpl } Vcl.Forms.TApplication.CancelHint (Line 11181, "Vcl.Forms.pas" + 6) + $D
[507CB41F]{vcl220.bpl } Vcl.Forms.TApplication.ProcessMessage (Line 10352, "Vcl.Forms.pas" + 23) + $1
[507CB462]{vcl220.bpl } Vcl.Forms.TApplication.HandleMessage (Line 10382, "Vcl.Forms.pas" + 1) + $4
[507CB795]{vcl220.bpl } Vcl.Forms.TApplication.Run (Line 10520, "Vcl.Forms.pas" + 26) + $3

 

–jeroen

Read the rest of this entry »

Posted in Castalia, Delphi, Delphi XE8, Development, QC, Software Development | 3 Comments »

CppCon 2015: Greg Law ” Give me 15 minutes & I’ll change your view of GDB” – YouTube

Posted by jpluimers on 2016/11/17

CppCon 2015: Greg Law ” Give me 15 minutes & I’ll change your view of GDB” – YouTube

via: Things you did not know about GDB – Kristian Köhntopp – Google+

–jeroen

Posted in Debugging, Development, GDB, Software Development | Leave a Comment »

Versioning common sense (major.minor.patch) has a name: Semantic Versioning 2.0.0

Posted by jpluimers on 2016/11/17

I just discovered the versioning common sense I’ve used for decades actually has a name. It’s even a “standard”!

Semantic Versioning 2.0.0 Summary

Given a version number MAJOR.MINOR.PATCH, increment the:

  1. MAJOR version when you make incompatible API changes,
  2. MINOR version when you add functionality in a backwards-compatible manner, and
  3. PATCH version when you make backwards-compatible bug fixes.

Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format.

I discovered it via:

betty – Friendly English-like interface for your command line. Don’t remember a command? Ask Betty.

Source: pickhardt/betty

–jeroen

Posted in Agile, Development, Software Development | Leave a Comment »

`xcode-select –install` required for OS X 10.9 Xcode command-line tools (like `zlib-devel`)

Posted by jpluimers on 2016/11/16

Hopefully this was a one time oversight from Apple, but on OS X 10.9 (Mavericks) the Xcode command-line tools cannot be installed from the Xcode Preferences pane.

You have to install them from the command-line:

xcode-select --install

There is one catch though: it might fail as you first have to start Xcode once and accept the license agreement.

You need them for instance when playing with zlib-devel (for instance when creating your own openssl builds).

–jeroen

Posted in Apple, Development, Mac OS X / OS X / MacOS, OS X 10.9 Mavericks, Power User, Software Development, xCode/Mac/iPad/iPhone/iOS/cocoa | Leave a Comment »

Positive: Delphi 10.1 Berlin Update 2 is out – ISO links

Posted by jpluimers on 2016/11/15

Since I’m lazy and always misplace how to get the ISOs:

–jeroen

Reference: Positive: Delphi 10.1 Berlin is out; negative all Embarcadero HTTPS sites still vulnerable to DROWN attack « The Wiert Corner – irregular stream of stuff

Posted in Delphi, Delphi 10.1 Berlin (BigBen), Development, Software Development | 1 Comment »

Oh nice: the compiler settings in your .dproj files are not reflected in what Ctrl-O O emits in XE7

Posted by jpluimers on 2016/11/15

I need to test this with other Delphi versions:

Oh nice: the compiler settings in your .dproj files are not reflected in what Ctrl-O O emits as it always puts this as first line in your source code for Delphi XE7:

{$A8,B-,C+,D+,E-,F-,G+,H+,I+,J-,K-,L+,M-,N-,O+,P+,Q-,R-,S-,T-,U-,V+,W-,X+,Y+,Z1}

Which means that changing integer values in <DCC_Alighment> or <DCC_MinimumEnumSize> and boolean values in <DCC_Optimize> have no effect.

Bummer.

Source: Oh nice: the compiler settings in your .dproj files are not reflected in what…

I will officially report it as soon as https://www.ssllabs.com/ssltest/analyze.html?d=quality.embarcadero.com grades B or better.

And I need to find out if I can help determining which of these causes it via [WayBack] Thomas Mueller (dummzeuch) – Google+:

There are two possibilities:
1. The settings in the dproj file have no effect
2. The settings Ctrl-O O writes to the source file do not reflect the actual compiler settings but are hard coded instead.
(3. Both)

–jeroen

 

 

Posted in Delphi, Delphi XE7, Development, Software Development | Leave a Comment »

Angular 2: Show me the Money!

Posted by jpluimers on 2016/11/15

In the enterprise, Angular is a safe bet!

Source: Angular 2: Show me the Money!

Posted in Angular 2, Development, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

Determine Domain and username used when a network share was mapped

Posted by jpluimers on 2016/11/15

Need to research this a bit further as this works:

powershell gwmi -Query 'Select LocalName, RemoteName, UserName from Win32_NetworkConnection'
__GENUS : 2
__CLASS : Win32_NetworkConnection
__SUPERCLASS :
__DYNASTY :
__RELPATH :
__PROPERTY_COUNT : 3
__DERIVATION : {}
__SERVER :
__NAMESPACE :
__PATH :
LocalName :
RemoteName : \\w701ujpl\IPC$
UserName : EN81ENTx64SCAN\jeroenp
PSComputerName :

But this fails for some Powershell versions:

powershell
gwmi -Query 'Select * from Win32_NetworkConnection' | Select-Object LocalName, RemoteName, UserName, ConnectionState | Sort-Object LocalName | ft -auto

–jeroen

Source: user – Determine Domain and username used to map a network drive – Stack Overflow

Posted in Development, PowerShell, Scripting, Software Development | 1 Comment »

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