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It is a little about OPML (a format for creation of list RSS of channels)

It is a little about OPML

After you have created on a site some own RSS-channels (about creation RSS of channels and what is it such, on example RSS 2.0 read here http://naklon.debilarius.ru/texts/sleep/rss.htm), or want to create the list of RSS-channels of the friends and familiar at increase in the list to describe each of them in heading begins unproductively.

To do{make} the list on each page also not an output{exit}: as, first, it will be SPAM in the pure state, i.e. the information not demanded by the user, and, second, it increases the size of page. But there is a decision.

For creation of the list of channels RSS for the present{true} moment there are two formats: OCS (Open Content Syndication) and OPML (Outline Processor Markup Language). Both of them are based on language XML. The difference between these formats about same, as well as between RSS 1.0 and 2.0, therefore for formation manually the most convenient, in my opinion, will be nevertheless OPML. OPML is old enough format, and his basic applicability was the description of the structures similar to catalogues on a disk.

Let's consider, for an example, a file describing on a site debilarius.ru channels of partners Rybca.

<? xml version = " 1.0" encoding = "windows-1251"?>

<head>

<title> Rybec and his friends </title>

<ownerName> Egor Naklonyaeff </ownerName>

<ownerEmail> chyduskam@debilarius.ru </ownerEmail>

</head>

<body>

<outline type = "rss" title = " Rybka debiljarius "

description = " something intellectually other "

xmlUrl = " http: // debilarius.ru/rss / "

htmlUrl = " http: // debilarius.ru / "/>

<outline type = "rss" title = " Egor Naklonjaeva's Portal "

description = " Egor Naklonjaeva's Site and Sigizmunda Trakha, ljudovedov and

dusheljubov, and also them edinochajatelej. The site is devoted to an inclination, it

To propagation and practical application. "

xmlUrl = " http: // naklon.debilarius.ru/rss / "

htmlUrl = " http: // naklon.debilarius.ru / "/>

<outline type = "rss" title = " Provod.kom Valery Tihonov-NeToT, personal body " d

escription = " the Literaturo-study of local lore set of files.

Practical interest does not represent. Contains on means

nalogoneplatel`hhikov " xmlUrl = " http: // provod.com/rss.xml "

htmlUrl = " http: // www.provod.com / "/>

</body>

</opml>

So, we shall disassemble under the order. The first line speaks us about that, what is it XML versions 1.0, and that for analysis of it it is necessary to use the coding [47] windows-1251. The second line opens a tag opml with obligatory attribute version. The given element will consist of two obligatory elements: head and body. The element head can be empty, and can contain the below-mentioned elements, describing given document:

* <title> - the general{common} heading of the document

* <dateCreated> - date of creation of the document

* <dateModified> - date of last change of the document

* <ownerName> - a line describing the owner of the given document

* <ownerEmail> - an e-mail address of the owner.

Other elements mentioned in the specification as that <expansionState>, <vertScrollState>, <windowTop>, <windowLeft>, <windowBottom> and <windowRight> for our purposes are not necessary. More in detail about them, see specification OPML (http://opml.scripting.com/spec)

Pay attention to date, she should be necessarily in standard RFC 822, i.e. with the instruction{indication} of day of week and time zone. For Moscow and Saint Petersburg, time zone +0300. Thus: Sat, 20 Dec 2003 15:00:00 GMT - the same, that Sat, 20 Dec 2003 18:00:00 +0300.

It is allowable both spellings.

As if to an element body with it it is more complex . The detailed specification on him is not present, therefore I shall describe elements from existing practice of his application in the Internet. The given element will consist of any quantity{amount} of elements <outline>. Investments in the given element of other elements though are supposed by the standard at the description of documents of such type, it is not supported by the majority agregatorov. Each element contains the following desirable attributes:

* type - type of an element, we write "rss".

* title - in this case, the name of the RSS-channel. Corresponds{meets} to an element <title> an element <channel> for RSS 2.0

* description - the brief description of the channel. Corresponds{meets} to an element <description> an element <channel> for RSS 2.0

* xmlUrl - the link to the channel as RSS

* htmlUrl-ssyka on HTML-page of the given channel. Corresponds{meets} to an element <link> an element <channel> for RSS 2.0

Let's save the received result as a file with expansion .opml and we shall pass to adjustment of the server. It is necessary for server to inform, that there is such expansion. It is done{made} at Apache server, for example, by simple addition of a line:

AddType text/xml opml

In fail .htaccess. If all this for you a double-dutch simply save a file with expansion .xml, such as myfriends.xml and forget, that I just spoke.

After we have saved a file and have laid out it on the server, it is necessary to inform come on a site, that at us is opml. For page in format HTML it is done{made} by the following element of section <head>:

Replace http://naklon.debilarius.ru/debilarius.opml with the link and enjoy result. For such agregatorov, as for example NewzCrawler (http://www.newzcrawler.com/) more than it is enough of it.

For less advanced, it is possible to put the given link to the button or to make her in a text kind, but it already absolutely other history...