static ICollection <string> FindFileKeys(InstallPackage pkg, ICollection <string> fileNames)
{
List <string> fileKeys = null;
if (fileNames != null)
{
fileKeys = new List <string>();
foreach (string fileName in fileNames)
{
string[] foundFileKeys = null;
if (fileName.IndexOfAny(new char[] { '*', '?' }) >= 0)
{
foundFileKeys = pkg.FindFiles(FilePatternToRegex(fileName));
}
else
{
foundFileKeys = pkg.FindFiles(fileName);
}
fileKeys.AddRange(foundFileKeys);
}
if (fileKeys.Count == 0)
{
throw new FileNotFoundException("Files not found in package.");
}
}
return(fileKeys);
}