public string GetImage(string description, string root)
{
if (mImagesShown++ >= mItemsCollapseAfter)
{
return(string.Empty);
}
if (string.IsNullOrEmpty(description))
{
return(string.Empty);
}
List <HtmlImage> list = HtmlImageExtractor.Extract(description);
if (list.Count == 0)
{
return(string.Empty);
}
Uri rooturi = null;
Uri uri = null;
Uri.TryCreate(root, UriKind.Absolute, out rooturi);
Uri.TryCreate(rooturi, list[0].Src, out uri);
Uri imgrewriteuri = new Uri(SessionManager.WebsiteUri, "AccountFeedItemPicture.aspx?src=");
return(string.Format("<img class='sncore_blog_image' border='0' src='{0}{1}'>",
imgrewriteuri, Renderer.UrlEncode(uri.ToString())));
}
public void linkSummarize_Click(object sender, EventArgs e)
{
List <HtmlImage> list = HtmlImageExtractor.Extract(inputSummary.Content);
string imageuri = string.Empty;
if (list.Count > 0)
{
imageuri = list[0].Src;
imageuri = imageuri.Replace("AccountStoryPicture.aspx", "AccountStoryPictureThumbnail.aspx");
}
else
{
TransitAccountStory ts = SessionManager.StoryService.GetAccountStoryById(
SessionManager.Ticket, RequestId);
imageuri = string.Format("AccountStoryPictureThumbnail.aspx?id={0}", ts.AccountStoryPictureId);
}
labelSummary.Text = string.Format(
"<table cellpadding='4' cellspacing='4'>\n" +
"<tr>\n" +
"<td valign='middle'>\n" +
"<a href='{2}'><img border='0' src='{0}'></a>\n" +
"</td>\n" +
"<td valign='middle'>\n" +
"<p><a href='{2}'>{3}</a></p>\n" +
"<p>{1}</p>\n" +
"</td>\n" +
"</tr>\n" +
"</table>",
imageuri,
Renderer.GetSummary(inputSummary.Content),
string.Format("AccountStoryView.aspx?id={0}", RequestId),
Renderer.Render(inputName.Text));
}
public void ExtractMultipleImages()
{
string html = "<html><img src='http://www.server.com/image.gif' alt='altvalue' width=10 height=20>" +
"<img src='http://www.server.com/anotherimage.gif'></html>";
List <HtmlImage> images = HtmlImageExtractor.Extract(html);
Assert.AreEqual(images.Count, 2);
}
public void ExtractRelativeImages()
{
string html = "<html><img src='image.gif' alt='altvalue' width=10 height=20>" +
"<img src='http://www.two.com/image.gif'></html>";
List <HtmlImage> images = HtmlImageExtractor.Extract(html, new Uri("http://www.one.com"));
Assert.AreEqual(images.Count, 2);
Assert.AreEqual("http://www.one.com/image.gif", images[0].Src);
Assert.AreEqual("http://www.two.com/image.gif", images[1].Src);
}
public void ExtractAllProperties()
{
string html = "<html><img src='http://www.server.com/image.gif' alt='altvalue' width=10 height=20></html>";
List <HtmlImage> images = HtmlImageExtractor.Extract(html);
Assert.AreEqual(images.Count, 1);
Assert.AreEqual("http://www.server.com/image.gif", images[0].Src);
Assert.AreEqual("altvalue", images[0].Alt);
Assert.AreEqual(10, images[0].Width);
Assert.AreEqual(20, images[0].Height);
}
public void ExtractBasic()
{
string html = "<html><img src='http://www.server.com/image.gif'></html>";
List <HtmlImage> images = HtmlImageExtractor.Extract(html);
Assert.AreEqual(images.Count, 1);
Assert.AreEqual("http://www.server.com/image.gif", images[0].Src);
Assert.IsTrue(string.IsNullOrEmpty(images[0].Alt));
Assert.AreEqual(-1, images[0].Width);
Assert.AreEqual(-1, images[0].Height);
}
public string GetImage(string description)
{
if (mImagesShown++ >= mItemsCollapseAfter)
{
return(string.Empty);
}
if (string.IsNullOrEmpty(description))
{
return(string.Empty);
}
List <HtmlImage> list = HtmlImageExtractor.Extract(description);
if (list.Count == 0)
{
return(string.Empty);
}
return(string.Format("<img class='sncore_blog_image' border='0' src='{0}'>", list[0].Src));
}
public int UpdateImages(ManagedSecurityContext sec)
{
GetACL().Check(sec, DataOperation.Update);
int result = 0;
Uri basehref = null;
Uri.TryCreate(mInstance.LinkUrl, UriKind.Absolute, out basehref);
IList items = Session.CreateCriteria(typeof(AccountFeedItem))
.Add(Expression.Eq("AccountFeed.Id", mInstance.Id))
.List();
foreach (AccountFeedItem item in items)
{
IList <HtmlImage> images = null;
try
{
images = HtmlImageExtractor.Extract(item.Description, basehref);
}
catch
{
continue;
}
TimeSpan tsDistribution = new TimeSpan(0, 30, 0);
foreach (HtmlImage image in images)
{
AccountFeedItemImg x_img = null;
// images may appear only once, repeating images don't get updated
// nor images linked from multiple feeds or feed items
x_img = (AccountFeedItemImg)Session.CreateCriteria(typeof(AccountFeedItemImg))
.Add(Expression.Eq("Url", image.Src)).UniqueResult();
if (x_img != null)
{
// image already exists
continue;
}
x_img = new AccountFeedItemImg();
x_img.Created = item.Created.Subtract(tsDistribution); // shuffle images
tsDistribution = tsDistribution.Add(new TimeSpan(0, 30, 0));
x_img.Modified = DateTime.UtcNow;
x_img.AccountFeedItem = item;
x_img.Description = image.Alt;
x_img.Interesting = false;
x_img.Url = image.Src;
// fetch the image to get its size
try
{
WebClient client = new WebClient();
client.Headers["Accept"] = "*/*";
client.Headers["User-Agent"] = ManagedConfiguration.GetValue(Session, "SnCore.Web.UserAgent", "SnCore/1.0");
byte[] data = client.DownloadData(x_img.Url);
if (data == null)
{
throw new Exception("Missing file data.");
}
ThumbnailBitmap bitmap = new ThumbnailBitmap(data);
x_img.Thumbnail = bitmap.Thumbnail;
x_img.Visible = mInstance.PublishImgs;
// hide images smaller than the thumbnail size
if (bitmap.FullSize.Height < ThumbnailBitmap.s_ThumbnailSize.Height ||
bitmap.FullSize.Width < ThumbnailBitmap.s_ThumbnailSize.Width)
{
x_img.Visible = false;
}
}
catch (Exception ex)
{
x_img.LastError = ex.Message;
x_img.Visible = false;
}
Session.Save(x_img);
result++;
}
}
return(result);
}
