Feature #19: Adding 16-bit Unicode support for Component Pascal identifiers - BlackBox Component Builder - BlackBox Center Issues Tracker

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Feature #19

closed

Adding 16-bit Unicode support for Component Pascal identifiers

Added by J. Templ about 11 years ago. Updated about 10 years ago.

Status:

Closed

Priority:

Normal

Assignee:

J. Templ

Target version:

1.7

Start date:

10/23/2014

Due date:

% Done:

100%

Estimated time:

Forum topic:

Description

BlackBox 1.6 already supports extended ASCII-characters from the ISO-Latin-1 subset of Unicode for Component Pascal identifiers. For the benefit of the Cyrillic or Greek community, for example, it is required to add 16-bit Unicode support. In order to simplify the required changes in the compiler and runtime system and for providing a compact encoding
of plain ASCII-identifiers the UTF-8 encoding shall be used for representing Unicode identifiers both
internally in the compiler and runtime system and externally in symbol and object files. This also has
the advantage that the symbol and object file formats stay compatible with BB 1.6 as long as plain ASCII
characters are used. Because Unicode characters may also exist in module names, which are mapped to file names, it is required to add Unicode support to file name handling in a number of modules.
Refers to CPC-1.7 change list items 1, 7, 13, 21, 22, 23.

Related issues 3 (0 open — 3 closed)

Related to BlackBox Component Builder - Bug #120: The interface is not showing for aliases

Closed

I. Denisov

08/03/2016

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Related to BlackBox Component Builder - Bug #57: wrong encoding of "module not found" message

Closed

I. Denisov

05/29/2015

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Related to BlackBox Component Builder - Bug #132: Trash in the definitions for extended records with unicode identifiers

Closed

09/28/2016

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Issue # Delay: days Cancel

History
Notes
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Updated by J. Templ about 11 years ago

Description updated (diff)
% Done changed from 0 to 50

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Updated by J. Templ about 11 years ago

Subject changed from Adding full Unicode support for Component Pascal identifiers to Adding 16-bit Unicode support for Component Pascal identifiers
Description updated (diff)

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Updated by I. Denisov almost 11 years ago

Status changed from New to In Progress
% Done changed from 50 to 70

According the today de facto standart of UTF-8.
http://tools.ietf.org/html/rfc3629

any valid UTF-8 string should match the next "Syntax of UTF-8 Byte Sequences":

   UTF8-octets = *( UTF8-char )
   UTF8-char   = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
   UTF8-1      = 00X-7FX
   UTF8-2      = C2X-DFX UTF8-tail
   UTF8-3      = E0X A0X-BFX UTF8-tail / E1X-ECX 2( UTF8-tail ) / EDX 80X-9FX UTF8-tail / EEX-EFX 2( UTF8-tail )
   UTF8-4      = F0X 90X-BFX 2( UTF8-tail ) / F1X-F3X 3( UTF8-tail ) /  F4X 80X-8FX 2( UTF8-tail )
   UTF8-tail   = 80X-BFX

Alexander Shiryaev made the algorithm that doing conversion from UTF8 to Unicode checking validity of the input.
http://forum.oberoncore.ru/viewtopic.php?f=127&p=89571#p89571

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Updated by I. Denisov almost 11 years ago

Helmut found one error!

Helmut wrote:

Dear BlackBox User,

two days ago I received an e-mail from Hans Klaver:

Dear Helmut,
Today I downloaded BlackBox 1.7-RC4 for Windows.
In case you do not know already: the BB Logo is missing from the

About BlackBox dialog and from the Guided Tour document.

Bye,
Hans Klaver

Without his feedback I did not know that the uploaded version had an error.
I immediately rollback to the last known good version and search for the
error.

I catch the error with the following steps:
1. select the word DevCPM.LogWStr
2. Info -> Search in Source
3. klick on the link Dev/Mod/CPP.odc
4. Dev -> Compile
command error: cannot load module DevCompiler

Notes:
The error is reported form the StdInterpreter.ShowLoaderResult via
CannotLoaderResult.
The module DevCompiler exist and after restart of BlackBox I can
compile. So what happens?

I found the error in module StdLoader
PROCEDURE (h: Hook) ThisMod (IN name: ARRAY OF SHORTCHAR):
Kernel.Module;

at line
VAR m: Kernel.Module; ms: ModSpec; n: Kernel.Name; res: INTEGER;

The variable definition res: INTEGER; must be deleted.

The correct line is
VAR m: Kernel.Module; ms: ModSpec; n: Kernel.Name;

Please have a look at Help -> About BlackBox

Version 1.7-RC4 Built number 10 on 20.10.2014 is OK
Version 1.7-RC4 Built number 11 on 30.10.2014 is erroneous
Version 1.7-RC4 Built number 15 on 11.11.2014 is OK

I apologize the inconvenience you with my fault.

With best regards

Helmut Zinn

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Updated by I. Denisov almost 11 years ago

% Done changed from 70 to 80

luowy suggested better converter, that is also handle surrogates and return res in clever way.

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 --- end of encoding ---

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