Parsing RSS

The purpose of this article - to show the general direction in parsing RSS. As an example, we will use RSS of our forum: http://en.a-parser.com/forum/english-news/index.rss. This preset may be used for other sites, but due to different standards, may need to make some modifications.

The process of parsing is quite simple and consists mainly of information search using regular expressions and its output to the result file.

Spoiler: Template of format results

• Use Net::HTTP
• The proxy may not be used
• First parse all <item>...</item>
• Then from the resulting array parse the necessary information. In this example: title, date, URL and content.
• Purified from the superfluous elements (in the example it is HTML tags and entities, as well as other residual lines).
• Outputs a result using the capabilities of Template Toolkit, in the desired format.

When parsing such a way that, if at some moment is not the desired parameter in the body of RSS feed, it simply will empty the integrity and consistency of information can not be broken (on the specification of RSS, all the parameters are optional, so may skip). The result is a file with the same contents:

Spoiler: Код для импорта

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