protected override async Task <IEnumerable <IDocument> > ExecuteInputAsync(IDocument input, IExecutionContext context)
{
XmpDirectory xmpDirectory;
try
{
using (Stream stream = input.GetContentStream())
{
xmpDirectory = ImageMetadataReader.ReadMetadata(stream).OfType <XmpDirectory>().FirstOrDefault();
}
}
catch (Exception)
{
xmpDirectory = null;
}
if (xmpDirectory == null)
{
// Try to read sidecarfile
if (!input.Source.IsNull)
{
IFile sidecarFile = context.FileSystem.GetInputFile(input.Source.AppendExtension(".xmp"));
if (sidecarFile.Exists)
{
MemoryStream xmpBytes = new MemoryStream();
using (Stream xmpStream = sidecarFile.OpenRead())
{
await xmpStream.CopyToAsync(xmpBytes);
}
xmpDirectory = new XmpReader().Extract(xmpBytes.ToArray());
}
}
}
if (xmpDirectory == null)
{
if (_toSearch.Any(y => y.IsMandatory))
{
context.LogWarning($"File doe not contain Metadata or sidecar file ({input.ToSafeDisplayString()})");
if (_skipElementOnMissingData)
{
return(null);
}
}
return(input.Yield());
}
Dictionary <string, object> newValues = new Dictionary <string, object>();
TreeDirectory hierarchicalDirectory = TreeDirectory.GetHierarchicalDirectory(xmpDirectory);
foreach (XmpSearchEntry search in _toSearch)
{
try
{
TreeDirectory metadata = hierarchicalDirectory.Childrean.Find(y => search.PathWithoutNamespacePrefix == y.ElementName && search.Namespace == y.ElementNameSpace);
if (metadata == null)
{
if (search.IsMandatory)
{
context.LogError($"Metadata does not Contain {search.XmpPath} ({input.ToSafeDisplayString()})");
if (_skipElementOnMissingData)
{
return(null);
}
}
continue;
}
object value = GetObjectFromMetadata(metadata, hierarchicalDirectory);
if (newValues.ContainsKey(search.MetadataKey) && _errorOnDoubleKeys)
{
context.LogError($"This Module tries to write same Key multiple times {search.MetadataKey} ({input.ToSafeDisplayString()})");
}
else
{
newValues[search.MetadataKey] = value;
}
}
catch (Exception e)
{
context.LogError($"An exception occurred : {e} {e.Message}");
if (search.IsMandatory && _skipElementOnMissingData)
{
return(null);
}
}
}
return(newValues.Count > 0 ? input.Clone(newValues).Yield() : input.Yield());
}
/// <inheritdoc />
public IEnumerable <IDocument> Execute(IReadOnlyList <IDocument> inputs, IExecutionContext context)
{
return(inputs.Select(context, input =>
{
MetadataExtractor.Formats.Xmp.XmpDirectory xmpDirectory;
try
{
using (var stream = input.GetStream())
{
xmpDirectory = ImageMetadataReader.ReadMetadata(stream).OfType <XmpDirectory>().FirstOrDefault();
}
}
catch (Exception)
{
xmpDirectory = null;
}
if (xmpDirectory == null) // Try to read sidecarfile
{
FilePath sourceFilePath = input.FilePath(Keys.SourceFilePath);
if (sourceFilePath != null)
{
IFile sidecarFile = context.FileSystem.GetInputFile(sourceFilePath.FullPath + ".xmp");
if (sidecarFile.Exists)
{
string xmpXml = sidecarFile.ReadAllText();
xmpDirectory = new XmpReader().Extract(xmpXml);
}
}
}
if (xmpDirectory == null)
{
if (_toSearch.Any(y => y.IsMandatory))
{
Trace.Warning($"File doe not contain Metadata or sidecar file ({input.SourceString()})");
if (_skipElementOnMissingData)
{
return null;
}
}
return input;
}
Dictionary <string, object> newValues = new Dictionary <string, object>();
TreeDirectory hierarchicalDirectory = TreeDirectory.GetHierarchicalDirectory(xmpDirectory);
foreach (var search in _toSearch)
{
try
{
TreeDirectory metadata = hierarchicalDirectory.Childrean.FirstOrDefault(y => search.PathWithoutNamespacePrefix == y.ElementName && search.Namespace == y.ElementNameSpace);
if (metadata == null)
{
if (search.IsMandatory)
{
Trace.Error($"Metadata does not Contain {search.XmpPath} ({input.SourceString()})");
if (_skipElementOnMissingData)
{
return null;
}
}
continue;
}
object value = GetObjectFromMetadata(metadata, hierarchicalDirectory);
if (newValues.ContainsKey(search.MetadataKey) && _errorOnDoubleKeys)
{
Trace.Error($"This Module tries to write same Key multiple times {search.MetadataKey} ({input.SourceString()})");
}
else
{
newValues[search.MetadataKey] = value;
}
}
catch (Exception e)
{
Trace.Error($"An exception occurred : {e} {e.Message}");
if (search.IsMandatory && _skipElementOnMissingData)
{
return null;
}
}
}
return newValues.Any() ? context.GetDocument(input, newValues) : input;
}).Where(x => x != null));
}