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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: windows-1251 to utf-8
Date: Wed, 31 Oct 2018 11:01:47 +0100
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Date: 2018-10-31T11:01:47+01:00
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On 2018-10-31 03:57, eduardsapotski@gmail.com wrote:
> I get HTML from web-server in windows-1251 encoding.
> How do convert HTML in windows-1251 to utf-8?

The encoding table is this:

    https://en.wikipedia.org/wiki/Windows-1251

The 7-bit codes correspond to UTF-8 directly. For 8-bit codes (for all 
codes actually) you take the number from the table, e.g. Cyrillic 
capital Ц -> 16#0426# and convert it to UTF-8 sequence using, for 
example this:

    http://www.dmitry-kazakov.de/ada/strings_edit.htm#7

The function Strings_Edit.UTF8.Image takes code point and returns UTF-8 
equivalent, so

    Strings_Edit.UTF8.Image (16#0426#)

gives Ц in UTF-8.

HTML is an unrelated story. Do you mean RFC 2396 escape sequences? This 
is an alternative representation that has nothing to do with Windows-1251.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de