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-rw-r--r--Aggregator/Parser/Parser.cs26
1 files changed, 19 insertions, 7 deletions
diff --git a/Aggregator/Parser/Parser.cs b/Aggregator/Parser/Parser.cs
index 5a6e7e6..3bd141d 100644
--- a/Aggregator/Parser/Parser.cs
+++ b/Aggregator/Parser/Parser.cs
@@ -5,11 +5,22 @@ using System.Collections.Generic;
using Aggregator.Classes;
namespace Aggregator.Parser {
+ /// <summary>
+ /// Class to provide Parsing services
+ /// </summary>
public static class Parser {
+
+ /// <summary>
+ /// Parse a single xml code, given a config, to Articles
+ /// </summary>
+ /// <param name="xml">XML code from an RSS feed</param>
+ /// <param name="config">Config that tells parser where to get relevant information</param>
+ /// <returns>Parsed articles from XML code</returns>
public static IEnumerable<Article> Parse(string xml, Config config) {
- return XDocument.Parse(xml).Descendants("item")
- .Select(articles => articles.Descendants().ToArray())
- .Select(article => new Article()
+
+ return XDocument.Parse(xml).Descendants("item") //make an XDocument out of the xml
+ .Select(articles => articles.Descendants().ToArray()) //turn each 'item' into it's respective descendants
+ .Select(article => new Article() //make a new article from each 'item' article, using config for pointers
{
Source = config.Source,
Title = article[config.Title].Value,
@@ -17,14 +28,15 @@ namespace Aggregator.Parser {
ArticleLink = article[config.ArticleLink].Value,
ImageLink = article[config.ImageLink].Attribute("url").Value,
PublishDate = DateTime.Parse(article[config.PublishDate].Value)
- }).Distinct();
+ }).Distinct(); //remove any duplicates
}
public static IEnumerable<Article> ParseMultiple(string[] xmls, List<Config> configs) {
- if (configs.Count == 0 || xmls.Length == 0 || (xmls.Length != configs.Count)) {
- return null;
+ if (configs.Count == 0 || xmls.Length == 0 || (xmls.Length != configs.Count)) {
+ return null; //for bad cases
}
else {
- return xmls.Select((xml, index) => Parse(xml, configs[index])).SelectMany(i => i);
+ return xmls.Select((xml, index) => Parse(xml, configs[index])) //Parse each item
+ .SelectMany(i => i); //remove distinctions between each set of articles
}
}
}