private void fetchPost(string url)
{
// url should be ...skk../post/show/[postId]
var html = _mainControl.Crawler.FetchHtml(url /* + "?" + Stopwatch.GetTimestamp().ToString()*/);
var content = StringAnalysisUtil.GetSubString(html, "<div id=post-content>", "</p>");
var contentUrl = "";
if (content.Contains("<video id=image"))
{
// post - video
contentUrl = StringAnalysisUtil.GetSubString(content, "src=\"", "\"");
}
else if (content.Contains("<a id=image-link"))
{
// post - image
content = StringAnalysisUtil.GetSubString(content, "<a id=image-link", "</a>");
if (content.Contains("href="))
{
// post - image resized
contentUrl = StringAnalysisUtil.GetSubString(content, "href=\"", "\"");
}
else
{
// post - image original directly
contentUrl = StringAnalysisUtil.GetSubString(content, "src=\"", "\"");
}
}
else
{
Trace.WriteLine("Error: unable to proceed post url [" + url + "]");
return;
}
contentUrl = WebUtility.HtmlDecode(contentUrl);
//Trace.WriteLine("------- post c url " + contentUrl);
if (!contentUrl.Contains("https"))
{
contentUrl = "https:" + contentUrl;
}
var tempFilePath = _mainControl.Crawler.FetchFile(contentUrl);
//Trace.WriteLine("------- post c path " + tempFilePath);
var fileName = _mainControl.FileStorage.PutFile(tempFilePath);
//var img = new ImageItem();
//img.fileName = fileName;
//img.pageUrl = url;
//img.tags = extractTags(html);
_mainControl.Persistence.AddImage(fileName, url, extractTags(html));
}
private HashSet <string> fetchIndex(string url)
{
Uri uriAddress = new Uri(url);
var host = uriAddress.GetLeftPart(UriPartial.Authority);
var html = _mainControl.Crawler.FetchHtml(url /* + "&" + Stopwatch.GetTimestamp().ToString()*/);
//Trace.WriteLine("------- post c\n" + html);
var content = StringAnalysisUtil.GetSubString(html, "<div class=content>", "<iframe ");
var postIds = new HashSet <string>();
var subContent = content;
while (subContent.Contains("<a href=\"/post/show/"))
{
var postId = StringAnalysisUtil.GetSubString(subContent, "<a href=\"/post/show/", "\"");
postIds.Add(postId);
subContent = subContent.Substring(subContent.IndexOf("<a href=\"/post/show/") + "<a href=\"/post/show/".Length);
}
while (content.Contains("<div next-page-url=\""))
{
var nextPageUrl = StringAnalysisUtil.GetSubString(content, "<div next-page-url=\"", "\"");
nextPageUrl = WebUtility.HtmlDecode(nextPageUrl);
nextPageUrl = host + "/post" + nextPageUrl;
//Trace.WriteLine("------- post nxt\n" + nextPageUrl);
Thread.Sleep(_mainControl.RetryIntervalIndex);
content = _mainControl.Crawler.FetchHtml(nextPageUrl);
subContent = content;
while (subContent.Contains("<a href=\"/post/show/"))
{
var postId = StringAnalysisUtil.GetSubString(subContent, "<a href=\"/post/show/", "\"");
postIds.Add(postId);
subContent = subContent.Substring(subContent.IndexOf("<a href=\"/post/show/") + "<a href=\"/post/show/".Length);
}
}
var postUrls = new HashSet <string>();
//Trace.WriteLine("------- post ids");
foreach (var i in postIds)
{
//Trace.WriteLine("------- post id " + i);
postUrls.Add(host + "/post/show/" + i);
}
return(postUrls);
}
private Dictionary <string, string> extractTags(string html)
{
var result = new Dictionary <string, string>();
var tagsContent = StringAnalysisUtil.GetSubString(html, "<ul id=tag-sidebar>", "</ul>");
while (tagsContent.Contains("<li class=tag-type-"))
{
var liContent = StringAnalysisUtil.GetSubString(tagsContent, "<li class=tag-type-", "</li>");
var tagType = liContent.Substring(0, liContent.IndexOf('>'));
var innerA = StringAnalysisUtil.GetSubString(liContent, "<a href=", "</a>");
var tagName = innerA.Substring(innerA.IndexOf('>') + 1);
//var tag = new TagItem();
//tag.tagName = tagName;
//tag.tagType = tagType;
//result.Add(tag);
result[tagName] = tagType;
//Trace.WriteLine("------- post c tag [" + tagName + "] [" + tagType + "]");
tagsContent = tagsContent.Substring(tagsContent.IndexOf("</li>") + 5);
//Trace.WriteLine("------- post c tagsc "+ tagsContent.Length);
}
return(result);
}
