private static bool ReleaseIsNewer(release data, Version curVersion)
{
if (data == null)
{
return(false);
}
var nextVersion = GetReleaseVersion(data);
if (nextVersion.Count < 3)
{
return(false);
}
if (nextVersion[0] > curVersion.Major)
{
return(true);
}
if (nextVersion[0] == curVersion.Major)
{
if (nextVersion[1] > curVersion.Minor)
{
return(true);
}
if (nextVersion[1] == curVersion.Minor)
{
if (nextVersion[2] > curVersion.Build)
{
return(true);
}
}
}
return(false);
}
private static List <int> GetReleaseVersion(release data)
{
List <int> ret = new List <int>();
if (data == null)
{
return(ret);
}
if (data.tag_name == null)
{
return(ret);
}
String[] parts = data.tag_name.ToLower().TrimStart('v').Split('.');
foreach (var i in parts)
{
if (!int.TryParse(i, out int j))
{
break;
}
ret.Add(j);
}
return(ret);
}
private static string GetReleaseDownloadUrl(release data, string assetName)
{
if (data == null)
{
return(null);
}
if (data.assets == null)
{
return(null);
}
foreach (var i in data.assets)
{
if (i.content_type == "application/x-msdownload")
{
if (i.name.StartsWith(assetName))
{
return(i.browser_download_url);
}
}
}
return(null);
}
/// <summary>
/// Get next version download url if available
/// </summary>
/// <param name="author">Github author</param>
/// <param name="repositoryName">Github repository name</param>
/// <param name="curVersion">Current assembly version</param>
/// <returns>Next release download url is available, else null</returns>
public static string GetNextVersionDownloadUrl(string author, string repositoryName, Version curVersion)
{
string releaseStr = GetReleasesFromApi(author, repositoryName);
List <release> list = DeserializeResponse <List <release> >(releaseStr);
release max = GetMaxRelease(list);
if (ReleaseIsNewer(max, curVersion))
{
return(GetReleaseDownloadUrl(max, repositoryName));
}
return(null);
}
private static release GetMaxRelease(List <release> list)
{
if (list == null)
{
return(null);
}
release ret = null;
foreach (var j in list)
{
if (ret == null)
{
ret = j;
}
else
{
var max = GetReleaseVersion(ret);
var cur = GetReleaseVersion(j);
for (int i = 0; (i < max.Count) && (i < cur.Count); i++)
{
if (cur[i] < max[i])
{
break;
}
if (cur[i] > max[i])
{
ret = j;
break;
}
}
}
}
return(ret);
}
