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

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Archive for the ‘UTF8’ Category

Delphi Galileo IDE (version 8 and up): Force files to be saved as UTF8 – The Oracle at Delphi

Posted by jpluimers on 2019/07/04

Though formatting mangled the registry key to add, the article is interesting: since 2003 (C# Builder 1), you can force the IDE to always save files as UTF8 which should alleviate a lot of encoding problems.

It beats me why this isn’t the default setting, but below is an example .reg file for Delphi 8 which should be easily transformed to more recent Delphi versions:


Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Borland\BDS\2.0\Editor]
"DefaultFileFilter"="Borland.FileFilter.UTF8ToUTF8"

So basically (if formatting is kept), you browse to this key (replace Borland with the company for your specific Delphi version, and replace 2.0 by your IDE version):

HKEY_CURRENT_USER\Software\Borland\BDS\16.0\Editor

Then you add a new string value named DefaultFileFilter with value Borland.FileFilter.UTF8ToUTF8

More background [WayBack] The Oracle at Delphi: More IDE secrets – UTF8 and the Editor

The unmangled registry key (and more tips) was from [WayBackBSC Polska: Hidden possibilities of Delphi 8.

Get the list of HKEY_CURRENT_USER paths for your Delphi version at Update to List-Delphi-Installed-Packages.ps1 shows HKCU/HKLM keys and doesn’t truncated fields any more.

–jeroen

Via: [WayBack] Is there any way (IDE expert?) to automatic set encoding of each PAS file in UTF-8 instead of ANSI? – Jacek Laskowski – Google+

Posted in Delphi, Development, Encoding, Software Development, UTF-8, UTF8 | 1 Comment »

UTF-8 support for single byte character sets is beta in Windows and likely breaks a lot of applications not expecting this (via Unicode in Microsoft Windows: UTF-8 – Wikipedia)

Posted by jpluimers on 2018/12/04

Uh-oh: [WayBack] Unicode in Microsoft Windows: UTF-8 – Wikipedia:

Microsoft Windows has a code page designated for UTF-8code page 65001. Prior to Windows 10 insider build 17035 (November 2017),[7] it was impossible to set the locale code page to 65001, leaving this code page only available for:

  • Explicit conversion functions such as MultiByteToWideChar
  • The Win32 console command chcp 65001 to translate stdin/out between UTF-8 and UTF-16.

This means that “narrow” functions, in particular fopen, cannot be called with UTF-8 strings, and in fact there is no way to open all possible files using fopen no matter what the locale is set to and/or what bytes are put in the string, as none of the available locales can produce all possible UTF-16 characters.

On all modern non-Windows platforms, the string passed to fopen is effectively UTF-8. This produces an incompatibility between other platforms and Windows. The normal work-around is to add Windows-specific code to convert UTF-8 to UTF-16 using MultiByteToWideChar and call the “wide” function.[8] Conversion is also needed even for Windows-specific api such as SetWindowText since many applications inherently have to use UTF-8 due to its use in file formats, internet protocols, and its ability to interoperate with raw arrays of bytes.

There were proposals to add new API to portable libraries such as Boost to do the necessary conversion, by adding new functions for opening and renaming files. These functions would pass filenames through unchanged on Unix, but translate them to UTF-16 on Windows.[9] This would allow code to be “portable”, but required just as many code changes as calling the wide functions.

With insider build 17035 and the April 2018 update (nominal build 17134) for Windows 10, a “Beta: Use Unicode UTF-8 for worldwide language support” checkbox appeared for setting the locale code page to UTF-8.[a] This allows for calling “narrow” functions, including fopen and SetWindowTextA, with UTF-8 strings. Microsoft claims this option might break some functions (a possible example is _mbsrev[10]) as they were written to assume multibyte encodings used no more than 2 bytes per character, thus until now code pages with more bytes such as GB 18030 (cp54936) and UTF-8 could not be set as the locale.[11]


  1. Jump up^ [WayBack“UTF-8 in Windows”Stack Overflow. Retrieved July 1, 2011.
  2. Jump up^ [WayBack“Boost.Nowide”.
  3. Jump up^ [WayBackhttps://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/strrev-wcsrev-mbsrev-mbsrev-l
  4. Jump up^ [WayBack“Code Page Identifiers (Windows)”msdn.microsoft.com.

Via [WayBack] Microsoft Windows Beta UTF-8 support for Ansi API could break things. Wiki Article of the Change… – Tommi Prami – Google+

Related, as handling encoding is hard, especially if it is changed or not your default:

–jeroen

Posted in .NET, C, C++, Delphi, Development, Encoding, GB 18030, Power User, Software Development, UTF-16, UTF-32, UTF-8, UTF16, UTF32, UTF8, Windows, Windows 10 | 2 Comments »

It looks like gmail finally understands Outlook Calendar entries

Posted by jpluimers on 2018/11/12

For a very long time, gMail did nothing with Outlook Calendar entires.

So I had to view at the message source, then translate them to Google Calendar entries myself.

--_000_430b30b9ffd74d959b74ab7ba778b487ultrawarenl_
Content-Type: text/calendar; charset="utf-8"; method=REQUEST
Content-Transfer-Encoding: base64

...

As of late, they seem to be processed into Google Calendar compatible entries. Nice!

–jeroen

Posted in base64, Development, Encoding, GMail, Google, GoogleCalendar, MIME, Office, Outlook, Power User, Software Development, UTF-8, UTF8 | Leave a Comment »

Shouldnt this line be null terminated? HostEnt := gethostbyname(MarshaledASt…

Posted by jpluimers on 2018/08/07

[WayBackShouldnt this line be null terminated? HostEnt := gethostbyname(MarshaledAString(TEncoding.UTF8.GetBytes(Name))); – G+ – Allen Drennan

Yes it should, but I’m not sure if the compiler is fully to blame as GetBytes does not return a terminating zero byte.

–jeroen

Posted in Delphi, Development, Encoding, Software Development, UTF-8, UTF8 | Leave a Comment »

Michael Kaplan Obituary – Berkowitz-Kumin-Bookatz | Cleveland Heights OH (and a whole bunch of info in zero width Unicode stuff)

Posted by jpluimers on 2018/01/02

I totally missed the passing of Michael Scott Kaplan some 2 years ago, so a belated R.I.P. is in place.

Obituary for Michael Kaplan, Michael Scott Kaplan, 45, passed away Wednesday, October 21, 2015, in Redmond, WA, after a brave battle with MS for 25 years. He was a lead software developer for Microsoft.

Source: [WayBackMichael Kaplan Obituary – Berkowitz-Kumin-Bookatz | Cleveland Heights OH

Michael was the leading source on i18n, L10N, Unicode, sorting, normalisation and other things having to do with languages, representations and writing.

Besides that he was a really nice guy of which I enjoyed his MSDN materials.

Other people enjoy that too, so I’m glad his writings have been archived: [first archive.is, second archive.is, WayBackSorting it All Out: Archives

Here are some additional links:

More on miloush.net:

Read the rest of this entry »

Posted in Ansi, Development, Encoding, internatiolanization (i18n) and localization (l10), Software Development, The Old New Thing, UTF-8, UTF8, Windows Development | Leave a Comment »

Long read about Unicode: You, Me And The Emoji: Character Sets, Encoding And Emoji – Smashing Magazine

Posted by jpluimers on 2017/11/07

A well worth long rad:

We all recognize emoji. They’ve become the global pop stars of digital communication. But what are they, technically speaking? And what might we learn by taking a closer look at these images, characters, pictographs… whatever they are 🤔 (Thinking Face). We will dig deep to learn about how these thingamajigs work. Please note: Depending on your browser, you may not be able to see all emoji featured in this article (especially the Tifinagh characters). Also, different platforms vary in how they display emoji as well. That’s why the article always provides textual alternatives. Don’t let it discourage you from reading though! Now, let’s start with a seemingly simple question. What are emoji?

[WayBackYou, Me And The Emoji: Character Sets, Encoding And Emoji – Smashing Magazine

Via: [WayBack] Everything you ever wanted to know about characters, encodings, glyphs… and, oh yeah, emoji: bit.ly/2fNKeW3Long, rewarding read. – Ilya Grigorik – Google+

Here is just the ToC:

TABLE OF CONTENTS LINK

  1. Character Sets And Document Encoding: An Overview
    1. Characters
    2. Character Sets
    3. Coded Character Sets
    4. Encoding
  2. Declaring Character Sets And Document Encoding On The Web
    1. content-type HTTP Header Declaration
    2. Checking HTTP Headers Using A Browser’s Developer Tools
    3. Checking HTTP Headers Using Web-based Tools
    4. Using A Meta Element With charset Attribute
    5. An Encoding By Any Other Name
  3. What Were We Talking About Again? Oh Yeah, Emoji!
    1. So What Are Emoji?
    2. How Do We Use Emoji?
    3. Character References
    4. Glyphs
    5. How Do We Know If We Have These Symbols?
    6. The Great Emoji Proliferation Of 2016
  4. Emoji OS Support
    1. Emoji Support: Apple Platforms (macOS and iOS)
    2. Emoji Support: Windows
    3. Emoji Support: Linux
    4. Emoji Support: Android
  5. Emoji On The Web
    1. Emoji One
    2. Twemoji
  6. Conclusion

–jeroen

Posted in ASCII, Development, Encoding, ISO-8859, ISO8859, Shift JIS, Unicode, UTF-16, UTF-8, UTF16, UTF8, Windows-1252 | Leave a Comment »

When someone writes UTF-8 and UTF-16 strings to the same file in binary format without converting between them…

Posted by jpluimers on 2017/06/21

A while ago, I had to fix some stuff in an application that would write – using a binary mechanism – UTF-8 and UTF-16 strings (part of it XML in various flavours)  to the same byte stream without converting between the two encodings.

Some links that helped me investigate what was wrong, choose what encoding to use for storage and fix it:

–jeroen

Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE8, Development, Encoding, Software Development, UTF-16, UTF-8, UTF16, UTF8, XML, XML/XSD | 3 Comments »

Some notes on stripping NULL characters and BOMs from files

Posted by jpluimers on 2017/05/31

A while ago I bumped into applications that write alternating UTF-16 and UTF-8 to files without checking what type of encoding the files were using.

So here are some notes to at least save some of the contents.

TODO: figure out how to strip the BOM.

–jeroen

Posted in Development, Encoding, Software Development, UTF-16, UTF-8, UTF16, UTF8 | Leave a Comment »

Applications that scale badely on High-DPI Displays: How to Stop the Madness – via: SQLServerCentral

Posted by jpluimers on 2017/05/10

Many applications still scale badly on High-DPI displays: dialogs way too small, icons you need a microscope for, etc.

SSMS in High-DPI Displays: How to Stop the Madness – SQLServerCentral explains a great trick that works for many applications, for intance:

The trick comes down to enabling the PreferExternalManifest registry setting and then create a manual manifest for the application that forces the application to use “bitmap scaling” by basically telling it does not support “XP style DPI scaling”.

You name manifest file named after the exe and stored it in the same directory as the exe.

After that, you also have to rename the exe to a temporary name and then back in order to refresh the cache.

A quote from the trick:

In Windows Vista, you had two possible ways of scaling applications: with the first one (the default) applications were instructed to scale their objects using the scaling factor imposed by the operating system. The results, depending on the quality of the application and the Windows version, could vary a lot. Some scaled correctly, some other look very similar to what we are seeing in SSMS, with some weird-looking GUIs. In Vista, this option was called “XP style DPI scaling”.

The second option, which you could activate by unchecking the “XP style” checkbox, involved drawing the graphical components of the GUI to an off-screen buffer and then drawing them back to the display, scaling the whole thing up to the screen resolution. This option is called “bitmap scaling” and the result is a perfectly laid out GUI.

In order to enable this option in Windows 10, you need to merge this key to your registry:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide]
"PreferExternalManifest"=dword:00000001

Then, the application has to be decorated with a manifest file that instructs Windows to disable DPI scaling and enable bitmap scaling, by declaring the application as DPI unaware. The manifest file has to be saved in the same folder as the executable (ssms.exe) and its name must be ssms.exe.manifest. In this case, for SSMS 2014, the file path is “C:\Program Files (x86)\Microsoft SQL Server\120\Tools\Binn\ManagementStudio\Ssms.exe.manifest”.

Paste this text inside the manifest file and save it in UTF8 encoding:


<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
<dependency>
<dependentAssembly>
<assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*">
</assemblyIdentity>
</dependentAssembly>
</dependency>
<dependency>
<dependentAssembly>
<assemblyIdentity type="win32" name="Microsoft.VC90.CRT" version="9.0.21022.8" processorArchitecture="amd64" publicKeyToken="1fc8b3b9a1e18e3b">
</assemblyIdentity>
</dependentAssembly>
</dependency>
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
<security>
<requestedPrivileges>
<requestedExecutionLevel level="asInvoker" uiAccess="false"/>
</requestedPrivileges>
</security>
</trustInfo>
<asmv3:application>
<asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings"&gt;
<ms_windowsSettings:dpiAware xmlns:ms_windowsSettings="http://schemas.microsoft.com/SMI/2005/WindowsSettings">false</ms_windowsSettings:dpiAware&gt;
</asmv3:windowsSettings>
</asmv3:application>
</assembly>

This “Vista style” bitmap scaling is very similar to what Apple is doing on his Retina displays, except that Apple uses a different font rendering algorithm that looks better when scaled up. If you use this technique in Windows, ClearType rendering is performed on the off-screen buffer before upscaling, so the final result might look a bit blurry.The amount of blurriness you will see depends on the scale factor you set in the control panel or in the settings app in Windows 10. Needless to say that exact pixel scaling looks better, so prefer 200% over 225% or 250% scale factors, because there is no such thing as “half pixel”.

–jeroen

Source: SSMS in High-DPI Displays: How to Stop the Madness – SQLServerCentral

Posted in Database Development, Delphi, Development, Eclipse IDE, Encoding, Java, Java Platform, Software Development, SQL, SQL Server, SSMS SQL Server Management Studio, UTF-8, UTF8 | 4 Comments »

ext3 – How to tell the language encoding of a filename on Linux? – Server Fault

Posted by jpluimers on 2017/05/08

From ext3 – How to tell the language encoding of a filename on Linux? – Server Fault  [WayBack] I learned a few things:

  • filename encoding on Linux is undetermined – the file system just assumes a byte array of characters
  • FTP and SFTP suffer from this as well (SFTP is based on SSH which now prefers UTF-8 [WayBack])

A good default is UTF-8, but it’s never guaranteed.

Two tools can help to determine the encoding of a filename:

  • convmv [WayBack] converts filenames from one encoding to another
  • chardet (Python) The Universal Character Encoding Detector

–jeroen

Posted in *nix, *nix-tools, Development, Encoding, Power User, Software Development, UTF-8, UTF8 | Leave a Comment »