/// <summary>
/// For an image, see if there's a sidecar on disk, and if so return
/// an object representing that sidecar.
/// </summary>
/// <param name="img"></param>
/// <returns></returns>
public static ImageSideCar GetSideCar(this Image img)
{
ImageSideCar result = null;
var sidecarSearch = Path.ChangeExtension(img.FileName, "*");
DirectoryInfo dir = new DirectoryInfo(img.Folder.Path);
var files = dir.GetFiles(sidecarSearch);
if (files.Any())
{
var on1Sidecar = files.FirstOrDefault(x => x.Extension.Equals(".on1", StringComparison.OrdinalIgnoreCase));
if (on1Sidecar != null)
{
result = new ImageSideCar {
Filename = on1Sidecar, Type = SidecarType.ON1
};
}
else
{
var xmpSidecar = files.FirstOrDefault(x => x.Extension.Equals(".xmp", StringComparison.OrdinalIgnoreCase));
if (xmpSidecar != null)
{
result = new ImageSideCar {
Filename = xmpSidecar, Type = SidecarType.XMP
};
}
}
}
return(result);
}
/// <summary>
/// Given a sidecar object, parses the files (ON1 or XMP) and pulls out
/// the list of keywords in the sidecar file.
/// </summary>
/// <param name="sidecar"></param>
/// <returns></returns>
public static IList <string> GetKeywords(this ImageSideCar sidecar)
{
var sideCarTags = new List <string>();
// If there's an On1 sidecar, read it
try
{
if (sidecar.Type == SidecarUtils.SidecarType.ON1)
{
var on1MetaData = On1Sidecar.LoadMetadata(sidecar.Filename);
if (on1MetaData != null && on1MetaData.Keywords != null && on1MetaData.Keywords.Any())
{
sideCarTags = on1MetaData.Keywords
.Select(x => x.Trim())
.ToList();
}
}
// If there's an XMP sidecar
if (sidecar.Type == SidecarUtils.SidecarType.XMP)
{
using var stream = File.OpenRead(sidecar.Filename.FullName);
IXmpMeta xmp = XmpMetaFactory.Parse(stream);
var xmpKeywords = xmp.Properties.FirstOrDefault(x => x.Path == "pdf:Keywords");
if (xmpKeywords != null)
{
sideCarTags = xmpKeywords.Value.Split(",")
.Select(x => x.Trim())
.ToList();
}
}
}
catch (Exception ex)
{
Logging.LogError($"Exception processing {sidecar.Type} sidecar: {sidecar.Filename.FullName}: {ex.Message}");
}
return(sideCarTags);
}