public IEnumerable <ExtractedPackageDto> GetPackages(PostedDataDto postedData)
{
using (MetadataContext context = new MetadataContext(metadataConfiguration.GetAbsolutePath(postedData.guid), postedData.password))
{
var packages = new List <ExtractedPackageDto>();
foreach (var package in context.GetPackages())
{
List <PropertyDto> properties = new List <PropertyDto>();
List <KnownPropertyDto> descriptors = new List <KnownPropertyDto>();
foreach (var property in package.Properties)
{
properties.Add(new PropertyDto
{
name = property.Name,
value = property.Value is Array ? ArrayUtil.AsString((Array)property.Value) : property.Value,
type = (int)property.Type,
});
}
foreach (var descriptor in package.Descriptors)
{
var accessLevel = descriptor.AccessLevel;
if (arrayTypes.Contains(descriptor.Type))
{
accessLevel &= AccessLevels.Remove;
}
descriptors.Add(new KnownPropertyDto
{
name = descriptor.Name,
type = (int)descriptor.Type,
accessLevel = (int)accessLevel
});
}
packages.Add(new ExtractedPackageDto
{
id = package.Id,
name = package.Name,
index = package.Index,
type = (int)package.Type,
properties = properties,
knownProperties = descriptors,
});
}
return(packages);
}
}
public LoadDocumentEntity LoadDocument(PostedDataDto postedData)
{
// get/set parameters
string filePath = metadataConfiguration.GetAbsolutePath(postedData.guid);
string password = string.IsNullOrEmpty(postedData.password) ? null : postedData.password;
LoadDocumentEntity loadDocumentEntity = new LoadDocumentEntity();
// set password for protected document
var loadOptions = new LoadOptions
{
Password = password
};
using (GroupDocs.Metadata.Metadata metadata = new GroupDocs.Metadata.Metadata(filePath, loadOptions))
{
GroupDocs.Metadata.Common.IReadOnlyList <PageInfo> pages = metadata.GetDocumentInfo().Pages;
using (MemoryStream stream = new MemoryStream())
{
PreviewOptions previewOptions = new PreviewOptions(pageNumber => stream, (pageNumber, pageStream) => { });
previewOptions.PreviewFormat = PreviewOptions.PreviewFormats.PNG;
int pageCount = pages.Count;
if (metadataConfiguration.GetPreloadPageCount() > 0)
{
pageCount = metadataConfiguration.GetPreloadPageCount();
}
for (int i = 0; i < pageCount; i++)
{
previewOptions.PageNumbers = new[] { i + 1 };
try
{
metadata.GeneratePreview(previewOptions);
}
catch (NotSupportedException)
{
continue;
}
PageDescriptionEntity pageData = GetPageDescriptionEntities(pages[i]);
string encodedImage = Convert.ToBase64String(stream.ToArray());
pageData.SetData(encodedImage);
loadDocumentEntity.SetPages(pageData);
stream.SetLength(0);
}
}
}
loadDocumentEntity.SetGuid(postedData.guid);
// return document description
return(loadDocumentEntity);
}