public static void Run(String open_file)
{
Pdfix pdfix = PdfixEngine.Instance;
// open doc using file stream
var fileStm = pdfix.CreateFileStream(open_file, PsFileMode.kPsReadOnly);
if (fileStm == null)
{
throw new Exception(pdfix.GetError());
}
PdfDoc doc0 = pdfix.OpenDocFromStream(fileStm, "");
if (doc0 == null)
{
throw new Exception(pdfix.GetError());
}
Console.WriteLine(@"Document open from file stream: {0} pages", doc0.GetNumPages());
doc0.Close();
// open doc using memory stream
byte[] fileData = new byte[fileStm.GetSize()];
fileStm.Read(0, fileData);
var memStm = pdfix.CreateMemStream();
memStm.Write(0, fileData);
PdfDoc doc1 = pdfix.OpenDocFromStream(memStm, "");
if (doc1 == null)
{
throw new Exception(pdfix.GetError());
}
Console.WriteLine(@"Document open from memory stream: {0} pages", doc1.GetNumPages());
doc1.Close();
memStm.Destroy();
// open doc using custom stream
PsStreamReadProc read_proc = (offset, buffer, size, client_data) =>
{
// read byte[] data from the source and copy to buffer
var stm = (((GCHandle)client_data).Target as PsStream);
byte[] buf = new byte[size];
var ret = stm.Read(offset, buf);
if (!ret)
{
return(-1);
}
Marshal.Copy(buf, 0, buffer, size);
return(size);
};
PsStreamGetSizeProc get_size_proc = (client_data) =>
{
// return the size of stream
var stm = (((GCHandle)client_data).Target as PsStream);
return(stm.GetSize());
};
var client_data_handle = GCHandle.Alloc(fileStm);
var customStm = pdfix.CreateCustomStream(read_proc, (IntPtr)client_data_handle);
customStm.SetGetSizeProc(get_size_proc);
PdfDoc doc2 = pdfix.OpenDocFromStream(customStm, "");
if (doc2 == null)
{
throw new Exception(pdfix.GetError());
}
Console.WriteLine(@"Document open from custom stream: {0} pages", doc2.GetNumPages());
doc2.Close();
customStm.Destroy();
client_data_handle.Free();
fileStm.Destroy();
}