Parser 3 Web Development

Золотое сечение

2011-12-29T13:50:00.002+04:00

История знает массу примеров мистификаций и приписок, причем из самых благих намерений. Так же и в символике. Надо чтобы люди чувствовали ее глубинный смысл, а сама форма не так важна. Возьми любую картинку, в ней обязательно что-нибудь золото секущееся да отыщется. Чем древнее, тем лучше. Самый древний у нас Египет, поупражняемся на нем.

Нет причин не заявить, что Египтяне знали о золотом сечении и специально все так сделали. В гробнице Петосириса, если покопаться с линейкой и циркулем можно много чего найти.

А вот современность - это поинтересней. Оказывается во многих предметах, в том числе, в айподе скрыты эти самые древние пропорции. Золотое сечение так вообще используется тут и там в этих девайсах.

Читайте полную статью по ссылке, там все рассказано.

Cinema - movies reviews

2008-01-10T11:49:00.000+03:00

Hey guys, I reanimated my website with funny reviews on different movies CINEMA
Although, most of you could not get any use of it, because it's in Russian.

JQuery - cool JavaScript library

2007-07-30T14:45:00.000+04:00

Here is very useful and lightweight JavaScript library that you could use to add proper web 2.0 feel to your page. If you need to. There is also huge, huge amount of plugins that you absolutely must take-a-look.
Here is the url: http://www.jquery.com

Applying LEFT to UTF-8 string in MySQL 3

2007-04-23T16:47:00.000+04:00

While applying LEFT function (MySQL built-in or Parser's) to the data encoded in UTF-8 in MySQL 3 database, you could get an charset dismatch error.

One chap at TeleType studio had written a quick workaround. This function chops the string by the first preceding space:



@subString[content;length]
$length(^length.int(0))
^while(^content.mid($length;1) ne ' ' && $i<^content.length[]){
^length.dec(1)
}
$result[^content.left($length)]
#/subString

Preloading images in JavaScript

2007-04-20T10:55:00.000+04:00

Old trick to preload images so that they could change smoothly in rollovers.

Act like this in <head> section:

<script language="JavaScript">
camera1 = new Image();
camera1.src = "/p/common/camera1.jpg";
camera2 = new Image();
camera2.src = "/p/common/camera2.jpg";
camera3 = new Image();
camera3.src = "/p/common/camera3.jpg";
</script>

This is used on www.lean-m.ru/?intro=no

Virtual file structure with mod_rewrite

2007-04-13T11:35:00.000+04:00

It is cool to use virtual directory structure. You could keep all your code in several files and all the content in the DB.

Here is trick with mod_rewrite that you can put into .htaccess file on the root of your site. The urls, that are not physically exist on the server will be passed into index.html and you could parse them yourself.


RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.html?uri=/$1 [QSA,L]

Cursor types in CSS

2007-04-11T18:19:00.000+04:00

Here is quick reference on cursor types in CSS

self-explaining:
style="cursor:auto;"
style="cursor:crosshair;"
style="cursor:default;"
style="cursor:hand;"
style="cursor:text;"
style="cursor:wait;"
style="cursor:help;"
style="cursor:move;"

arrow cursors "n", "w", etc. indicates "north", "west", and so on:
style="cursor:n-resize;"
style="cursor:ne-resize;"
style="cursor:nw-resize;"
style="cursor:s-resize;"
style="cursor:se-resize;"
style="cursor:sw-resize;"
style="cursor:e-resize;"
style="cursor:w-resize;"

Actual and requested server name

2007-04-09T10:45:00.000+04:00

There are differences between requested server name and actual server name. Because of aliases this may vary, but you could get both by apache environment variables. In Parser 3 it is as easy as an apple.

Assume you have a website at at www.hoogabooga.com and a bunch of aliases pointing to it:

$env:SERVER_NAME will get you an www.hoogabooga.com (actually it's an value of ServerName apache directive).

$env:HTTP_HOST gets whatever.hoogabooga.com that was input into the address box of the browser.

How to send HTML email with images

2007-04-07T23:39:00.000+04:00

When you are sending an HTML email (you don't want this for spam, aren't you?) and want a picture to be shown in a message body, you need to do this:

- attach an image to the message
- each image should be given an id
- in message's HTML you use this counstruction


<img src="cid:image_id" />

In Parser 3 sending such an email is a really easy job.

Here is the self-explaining code:


^mail:send[
  $.from[from@server.com]
  $.to[user@server.com]     
  $.subject[enlarge your appetite]
  $.charset[windows-1251]     
  $.html{
   <html>
   <img src="cid:logo" />
   </html>
  }
  $.file[
   $.value[^file::load[binary;/p/common/logo.gif]]
   $.name[logo.gif]
   $.content-id[logo]
  ]
]

Check for valid email regexp

2007-04-06T16:26:00.000+04:00

Here is regular expression I use to check for valid email


#
# Check whether string seems like an email
@IsEmail[email]
$result(^if(def $email && ^email.match[^^\w+([.-]?\w+)+\@\w+([.-]?[^^@]\w+)*\.[a-z]{2,4}^$][i]){1}{0})
#/IsEmail

And example of use:

^if(!^IsEmail[user@aol.com]){Invalid email}

What is Parser 3?

2007-04-04T12:50:00.000+04:00

Parser 3 is a web language developed by the Art.Lebedev Studio - the greatest Russian design studio, creators of Optimus keyboard and Vilcus plug dactyloadapter. They use it in their web projects as long as some other russian studios. It's simply designed, cgi- or apache-module thing that parse .html files and execute instructions.

It is class-based typeless language that would be easy to any PHP-developer to learn. At the same time it could be much more cost-effective to use in common web-application that PHP or Perl.

It features transparent charset handling including UTF-8, working with different database, XSLT transformation, XML parsing and other things.

The main feature of the language is that it keeps to be simple while providing almost every capabilities you could think of.

Further reading, documentation, downloads and support could be found at www.parser.ru/en/

PS: Yes I've used to work for Art.Lebedev some time ago :)
PPS: I know there are a lot of grammar problems. Normally I speak Russian most of the time, you know :))