/// <summary>
/// Get post associated with post number.
/// </summary>
/// <returns><see cref="ChanPost">ChanPost</see> detailing the post</returns>
///
/// <exception cref="ArgumentNullException">Thrown if board is null.</exception>
/// <exception cref="ArgumentException">Thrown if board is empty or whitespace.</exception>
/// <exception cref="ArgumentOutOfRangeException">Thrown if postNo <= 0.</exception>
///
/// <param name="board">Board where post is located.</param>
/// <param name="postNo">Post number.</param>
public static ChanPost GetPost(string board, int postNo)
{
board.ThrowIfNullOrWhiteSpace("board");
if (postNo < 1)
{
throw new ArgumentOutOfRangeException("post", "Cannot be 0 or negative.");
}
var jsonReq = string.Format("http://archive.moe/_/api/chan/post/?board={0}&num={1}", board, postNo);
var json = WebString.Download(jsonReq);
if (!json.Success)
{
return(new ChanPost(json));
}
dynamic postJson = JsonConvert.DeserializeObject(json.Document);
int threadNo = postJson.thread_num;
string subject = postJson.title;
string comment = postJson.comment_sanitized;
return(new ChanPost(json.Location,
board, ChanTools.GetBoardName(board),
threadNo, postNo,
subject, comment));
}
/// <summary>
/// Get post associated with post number.
/// </summary>
/// <returns><see cref="ChanPost">ChanPost</see> detailing the post.</returns>
///
/// <exception cref="ArgumentNullException">Thrown if board is null.</exception>
/// <exception cref="ArgumentException">Thrown if board is empty or whitespace.</exception>
/// <exception cref="ArgumentOutOfRangeException">Thrown if threadNo and/or postNo <= 0.</exception>
///
/// <param name="board">Board where thread/post is located.</param>
/// <param name="threadNo">Thread number.</param>
/// <param name="postNo">Post number.</param>
public static ChanPost GetPost(string board, int threadNo, int postNo)
{
board.ThrowIfNullOrWhiteSpace("board");
if (threadNo < 1)
{
throw new ArgumentOutOfRangeException("thread", "Cannot be 0 or negative.");
}
else if (postNo < 1)
{
throw new ArgumentOutOfRangeException("post", "Cannot be 0 or negative.");
}
var jsonReq = string.Format("http://a.4cdn.org/{0}/res/{1}.json", board, threadNo);
var json = WebString.Download(jsonReq);
if (!json.Success)
{
return(new ChanPost(json));
}
dynamic threadJson = JsonConvert.DeserializeObject(json.Document);
string subject = null;
string comment = null;
// Simple linear search, seems fast enough for the 100s of posts it needs to look through.
foreach (var post in threadJson.posts)
{
if (post.no == postNo)
{
subject = post.sub;
if (!string.IsNullOrEmpty(subject))
{
subject = HttpUtility.HtmlDecode(subject);
}
comment = post.com;
if (!string.IsNullOrEmpty(comment))
{
comment = Fix4chanPost(comment);
}
break;
}
}
return(new ChanPost(json.Location,
board, ChanTools.GetBoardName(board),
threadNo, postNo,
subject, comment));
}
/// <summary>
/// Extract board, thread number and optional post number from URL.
/// </summary>
/// <returns>Tuple containing: board, thread number and post number (last is optional).
/// If unable to extract the default return will be (string.Empty, -1, -1).</returns>
///
/// <exception cref="ArgumentNullException">Thrown if url is null.</exception>
/// <exception cref="ArgumentException">Thrown if url is empty or whitespace.</exception>
///
/// <param name="url">URL pointing to a thread and/or post.</param>
public static Tuple <string, int, int> Extract(string url)
{
url.ThrowIfNullOrWhiteSpace("url");
return(ChanTools.Extract(chanUrlRegexp, url));
}