/// <summary>
/// Creates <see cref="LinkHeader"/> from string value/>
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"/>
/// <exception cref="FormatException"/>
public static LinkHeader Parse(string value)
{
#region Check arguments
if (value is null)
{
throw new ArgumentNullException(nameof(value));
}
#endregion
var result = new LinkHeader();
var regex = new Regex("<(.+)> ?; ?(.+)", RegexOptions.IgnoreCase);
var match = regex.Match(value);
if (!match.Success)
{
throw new FormatException("Link doesn't match to regular expression");
}
result.Url = new Uri(match.Groups[1].Value, UriKind.RelativeOrAbsolute);
var attributes = match.Groups[2].Value
.Split(';')
.Select(LinkHeaderItem.Parse)
.ToArray();
result.Items.AddRange(attributes);
return(result);
}
public void Serializae2()
{
var link = new LinkHeader("/TheBook/chapter2");
link.Items.Add(new LinkHeaderItem("rel", "previous", true));
link.Items.Add(new LinkHeaderItem("title*", "UTF-8'de'letztes%20Kapitel"));
Assert.Equal("</TheBook/chapter2>; rel=\"previous\"; title*=UTF-8'de'letztes%20Kapitel", link.ToString());
}
public void Parse1()
{
var link = LinkHeader.Parse("</>;rel=\"index\"");
Assert.Equal("/", link.Url.OriginalString);
var rel = link.Items["REL"];
Assert.NotNull(rel);
Assert.Equal("rel", rel.Name);
Assert.Equal("index", rel.Value);
Assert.True(rel.Quoted);
}
public void Parse3()
{
var link = LinkHeader.Parse("</TheBook/chapter2>; rel=\"previous\"; title*=UTF-8'de'letztes%20Kapitel");
Assert.Equal("/TheBook/chapter2", link.Url.OriginalString);
var rel = link.Items["rel"];
Assert.NotNull(rel);
Assert.Equal("rel", rel.Name);
Assert.Equal("previous", rel.Value);
Assert.True(rel.Quoted);
var title = link.Items["title*"];
Assert.NotNull(title);
Assert.Equal("title*", title.Name);
Assert.Equal("UTF-8'de'letztes%20Kapitel", title.Value);
Assert.True(rel.Quoted);
}
public void Parse2()
{
var link = LinkHeader.Parse("<http://example.com/TheBook/chapter2>; rel=\"previous\"; title=\"previous chapter\"");
Assert.Equal("http://example.com/TheBook/chapter2", link.Url.OriginalString);
var rel = link.Items["rel"];
Assert.NotNull(rel);
Assert.Equal("rel", rel.Name);
Assert.Equal("previous", rel.Value);
Assert.True(rel.Quoted);
var title = link.Items["title"];
Assert.NotNull(title);
Assert.Equal("title", title.Name);
Assert.Equal("previous chapter", title.Value);
Assert.True(rel.Quoted);
}
public void Serializae1()
{
var link = new LinkHeader("/", new LinkHeaderItem("rel", "index", true));
Assert.Equal("</>; rel=\"index\"", link.ToString());
}