Article <v3uidi$20jte$2@dont-email.me>

Warning: mysqli::__construct(): (HY000/1203): User howardkn already has more than 'max_user_connections' active connections in D:\Inetpub\vhosts\howardknight.net\al.howardknight.net\includes\artfuncs.php on line 21
Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connections
Warning: mysqli::query(): Couldn't fetch mysqli in D:\Inetpub\vhosts\howardknight.net\al.howardknight.net\index.php on line 66
Article <v3uidi$20jte$2@dont-email.me>

Deutsch English Français Italiano

<v3uidi$20jte$2@dont-email.me>

View for Bookmarking (what is this?)
Look up another Usenet article

Path: ...!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Malcolm McLean <malcolm.arthur.mclean@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: ASCII to ASCII compression.
Date: Fri, 7 Jun 2024 10:03:46 +0100
Organization: A noiseless patient Spider
Lines: 33
Message-ID: <v3uidi$20jte$2@dont-email.me>
References: <v3snu1$1io29$2@dont-email.me> <v3u3c4$1ubqm$1@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 07 Jun 2024 11:03:46 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="bbc6ce194fadee025562548db60d9fc6";
	logging-data="2117550"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX18YIhlN/fmdtX25F8Ij9n/KQseuBN4MW5c="
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:EsiCvULE+XeVG/iZq8jqNOY3i8U=
In-Reply-To: <v3u3c4$1ubqm$1@dont-email.me>
Content-Language: en-GB
Bytes: 2431

On 07/06/2024 05:47, Mikko wrote:
> On 2024-06-06 16:25:37 +0000, Malcolm McLean said:
> 
>> Not strictly a C programming question, but smart people will see the 
>> relavance to the topicality, which is portability.
>>
>> Is there a compresiion algorthim which converts human language ASCII 
>> text to compressed ASCII, preferably only "isgraph" characters?
>>
>> So "Mary had a little lamb, its fleece was white as snow".
>>
>> Would become
>>
>> QWE£$543GtT£$"||x|VVBB?
> 
> There are compression algorithms that can be adapted to any possible
> size of input and output character sets, including that both are
> ASCII and that the output character set is a subset of the input set.
> 
> Restricting the input set to ASCII may be too strong. Files that should
> be ASCII files sometimes contain non-ascii bytes. The output should be
> restricted to the 94 visible characters but the decompressor should
> accept at least full ASCII and skip the invalid characters as 
> insignificant.
> That permits addition of line brakes and perhaps other spaces that could
> be useful for example when the file is printed for debugging.
> 
That's exactly the idea. The system is robust to white space. You can 
add spaces to your heart's content, and they arec just skipped.
-- 
Check out Basic Algorithms and my other books:
https://www.lulu.com/spotlight/bgy1mm