public void Verify(FileInfo pdf)
{
if (!pdf.Exists)
{
throw new InvalidOperationException("File to verify does not exist '{0}'".Fmt(pdf.FullName));
}
using (var destination = new DisposableFile()) {
GhostscriptWrapper.GenerateOutput(
inputPath: pdf.FullName,
outputPath: destination.File.FullName,
settings: new GhostscriptSettings {
Device = GhostscriptDevices.tiff24nc,
Resolution = new Size(72, 72),
Size = new GhostscriptPageSize {
Native = GhostscriptPageSizes.letter
}
});
//GhostScript embeds a creation timestamp on each page of the tiff. Obviously if its different every time the files won't match up byte for byte. So normalize
using (var tiff = Tiff.Open(destination.File.FullName, "a")) {
Enumerable.Range(0, tiff.NumberOfDirectories()).ForEach(i => {
tiff.SetDirectory((short)i);
tiff.SetField(TiffTag.DATETIME, Encoding.UTF8.GetBytes("2010:01:01 12:00:00")); //any constant date will do the trick here.
tiff.CheckpointDirectory();
});
}
Approvals.Verify(GetTiffApprovalWriter(destination.File), GetNamer(), GetReporter());
}
}
public void Verify(Stream pdf)
{
using (var pdfFile = new DisposableFile(pdf))
Verify(pdfFile.File);
}