/// <summary>
/// Writes info data for this folder on disk.
/// </summary>
public void WriteFolderFileInfo()
{
string filename = "";
try
{
filename = FolderInfoFileLocation();
PGFolderInfo f = new PGFolderInfo();
f.Security = this.Security;
foreach (PGImage image in this.Images)
{
PGImageInfo imageinfo = new PGImageInfo();
imageinfo.ImageFileName = image.FileName;
imageinfo.ImageFriendlyName = image.FriendlyName;
imageinfo.ImageDescription = image.ImageDescr;
imageinfo.Comments = image.Comments;
f.ImagesInfo.Add(imageinfo);
}
//serialization
System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(typeof(PGFolderInfo));
lock (locker)
{
using (MemoryStream m = new MemoryStream())
{
serializer.Serialize(m, f);
//to avoid file corruption if serialization fails
using (System.IO.FileStream xmlStream = new System.IO.FileStream(filename, System.IO.FileMode.Create, System.IO.FileAccess.Write))
{
m.WriteTo(xmlStream);
}
m.Close();
}
}
} catch (Exception ex) {
throw new Exception("Error writing folder information file on " + filename, ex);
}
}
/// <summary>
/// Reads data from xml cache file.
/// </summary>
public void ReadFolder()
{
string filename = "";
Images = GetImagesFromDiskFolder();
NumberNestedImages += NumberImages;
if (ExistFolderInfoFile())
{
try
{
lock (locker)
{
filename = Path.Combine(this.PhysicalPath, cfolderInfo);
System.Xml.Serialization.XmlSerializer dxml = new System.Xml.Serialization.XmlSerializer(typeof(PGFolderInfo));
using (System.IO.FileStream xmlStream = new System.IO.FileStream(filename, System.IO.FileMode.Open, System.IO.FileAccess.Read))
{
PGFolderInfo info = dxml.Deserialize(xmlStream) as PGFolderInfo;
this.Order = info.Order;
this.SortAction = info.SortAction;
this.Security = info.Security != null ? info.Security : new SecurityInfo();
foreach (PGImageInfo imageinfo in info.ImagesInfo)
{
//search for that image.
PGImage image = this.Images.Where(r => r.FileName == imageinfo.ImageFileName).FirstOrDefault();
if (image != null)
{
image.FriendlyName = string.IsNullOrWhiteSpace(imageinfo.ImageFriendlyName) ? image.FileName.Replace("_", " ") : imageinfo.ImageFriendlyName;
image.Comments = imageinfo.Comments;
foreach (Comment c in image.Comments)
{
c.ImageVPath = image.VPath;
Comments.Add(c);
}
image.ImageDescr = (imageinfo.ImageDescription != null) ? imageinfo.ImageDescription : "";
}
else
{
//image referenced in db file not found in file system.
//do nothing, next time file is written to disk will be gone
}
}
xmlStream.Close();
}
}
}
catch (Exception ex)
{
throw new Exception("Error reading folder information file on " + filename, ex);
}
}
if (Configuration.GetConfiguration().ReadBackWardsCompatibilityTxtFiles)
{
//backwards compatibility. any txt file associated to picture?
foreach (PGImage image in this.Images)
{
string txtFile = image.PhysicalPath.Replace(Path.GetExtension(image.PhysicalPath), ".txt");
if (File.Exists(txtFile))
{
using (StreamReader sr = new StreamReader(txtFile))
{
image.ImageDescr = sr.ReadToEnd();
}
}
}
}
}