private List <DownloadCenterForm.DownloadableFileInfo> removeAlreadyInstalledPackagesFromList(List <DownloadCenterForm.DownloadableFileInfo> packageListToFilter)
{
// get all the folders in the parts folder to know what is already installed
DirectoryInfo partsFolder = new DirectoryInfo(PartLibraryPanel.sFullPathForLibrary);
DirectoryInfo[] directoriesInPartsFolder = new DirectoryInfo[] { };
if (partsFolder.Exists)
{
directoriesInPartsFolder = partsFolder.GetDirectories();
}
else
{
// if the part folder doesn't exist, try to create it
partsFolder.Create();
// if the part folder doesn't exist we need to get all the package found
return(packageListToFilter);
}
// create a list with only the name of the directory
List <DownloadCenterForm.DownloadableFileInfo> installedPackages = new List <DownloadCenterForm.DownloadableFileInfo>();
foreach (DirectoryInfo directory in directoriesInPartsFolder)
{
// save the package name in the package info
DownloadCenterForm.DownloadableFileInfo package = new DownloadCenterForm.DownloadableFileInfo();
package.FileName = directory.Name + ".zip"; // add the zip extension to facilitate the string comparison
// check the about file on the local drive to get the version number
string aboutFileName = Application.StartupPath + @"/parts/" + directory.Name + @"/config/About.txt";
if (File.Exists(aboutFileName))
{
package.Version = getPackageVersionInAboutFile(aboutFileName);
}
// add the package to the list
installedPackages.Add(package);
}
// then iterate on the list to filter and remove the items already installed that has the good version
for (int i = 0; i < packageListToFilter.Count; ++i)
{
foreach (DownloadCenterForm.DownloadableFileInfo package in installedPackages)
{
if (package.FileName.Equals(packageListToFilter[i].FileName, StringComparison.OrdinalIgnoreCase) && string.Compare(package.Version, packageListToFilter[i].Version) >= 0)
{
packageListToFilter.RemoveAt(i);
i--;
break;
}
}
}
return(packageListToFilter);
}
private void backgroundWorkerSearchOnline_DoWork(object sender, DoWorkEventArgs e)
{
const string partsFolder = @"/parts/";
// Get the BackgroundWorker that raised this event.
BackgroundWorker worker = sender as BackgroundWorker;
// and get the parameters
SearchParameter parameters = e.Argument as SearchParameter;
ResultParameter result = new ResultParameter();
// declare a variable to report the progress on the search
int currentUrlIndex = 0;
// iterate on all the url in the search parameters
foreach (string url in parameters.searchURLs)
{
// increase the current url and init the serach step
currentUrlIndex++;
int searchStep = 0;
try
{
// report the begining of the search
worker.ReportProgress(searchStep, new ProgressParameter(currentUrlIndex, parameters.searchURLs.Count));
// create a web request to browse the url
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
// report that we got an answer
worker.ReportProgress(++searchStep, new ProgressParameter(currentUrlIndex, parameters.searchURLs.Count));
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
string html = reader.ReadToEnd();
// use a regexp to parse all the listed files from the html page
Regex regex = new Regex("<a href=\".+\\.zip\">(?<name>.+\\.zip)</a>");
MatchCollection matches = regex.Matches(html);
foreach (Match match in matches)
{
if (match.Success)
{
// create an array to store the destination file name, and url source file name
DownloadCenterForm.DownloadableFileInfo downloadInfo = new DownloadCenterForm.DownloadableFileInfo();
// get the file name found
string fileName = match.Groups["name"].Value;
string fileNameWithoutExtension = fileName.Remove(fileName.Length - 4);
// check if the file name contains a version number
int dotIndex = fileNameWithoutExtension.IndexOf('.');
if (dotIndex > 0)
{
downloadInfo.FileName = fileNameWithoutExtension.Remove(dotIndex) + ".zip";
downloadInfo.Version = fileNameWithoutExtension.Substring(dotIndex + 1);
}
else
{
downloadInfo.FileName = fileName;
downloadInfo.Version = string.Empty;
}
downloadInfo.SourceURL = url + fileName;
downloadInfo.DestinationFolder = partsFolder + fileName;
// add the array in the result list
result.allPackageListFound.Add(downloadInfo);
}
}
// report that we have finished to parse the html
worker.ReportProgress(++searchStep, new ProgressParameter(currentUrlIndex, parameters.searchURLs.Count));
}
}
}
catch
{
// report that the error
worker.ReportProgress(3, new ProgressParameter(currentUrlIndex, parameters.searchURLs.Count));
}
}
// set the result in the event of the background worker
e.Result = result;
}