RE: API: cwbOBJ_ReadSplF

You might want to take a little time to explore the System.Text.Encoding
namespace, specifically the Encoding.GetEncoding(int codepage) static
method.

Might not work but could be worth a shot.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of ibm
Sent: 25 June 2009 20:34
To: Midrange Systems Technical Discussion
Subject: RE: API: cwbOBJ_ReadSplF

RE: losing bytes

Looks like the problem is with StringConverter.FromBytes. I tested
reading 500 bytes at a time, then looping though the 500 byte array and
running FromBytes method byte-by-byte.

I was also thinking there must be a .NET way to convert IBM's Ebcidic?
To ASCII.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of ibm
Sent: Thursday, June 25, 2009 2:25 PM
To: Midrange Systems Technical Discussion
Subject: RE: API: cwbOBJ_ReadSplF

Dave, looks like CWBX.StringConverter.FromBytes(bytedata) did the trick.
There are still some formatting issues, such as TABs and other
characters are displayed as squares.

Also in the below code I had to change the code to read 1 byte at a
time. Otherwise I was getting just parts of the spooled file.

I tried to speed the processing up by reading one byte from file,
Marshal.Copy the pointer to a byte, then copy that byte to a byte array,
increase the byte array by 1, read one byte from file... etc... Then
when the entire file was read I used
StringConverter.FromBytes(destinationByteArray). The size of the byte
array was over 2000 but only 5 characters were displayed.



-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Dave
Sent: Thursday, June 25, 2009 1:16 PM
To: Midrange Systems Technical Discussion
Subject: re: API: cwbOBJ_ReadSplF

Not sure if it applies to spool files, but I know when using data queues

you need to use IcwbxStringConverter to and from bytes...

Dave
====
www.openDave.com

----------------------------------------

From: "ibm" <ibm@xxxxxxxxxx>
Sent: Thursday, June 25, 2009 10:34 AM
To: MIDRANGE-L@xxxxxxxxxxxx
Subject: API: cwbOBJ_ReadSplF

I'm trying to read the contents of a spooled file, but all I am getting
is garbage. Anyone have any insight into this?

Thanks

_

Public Shared Function cwbOBJ_ReadSplF(ByVal objectHandle As IntPtr,
_

ByVal bBuffer As IntPtr, _

ByVal bytesToRead As Integer,
_

ByRef bytesRead As Integer, _

ByVal errorHandle As IntPtr)
As Integer

End Function

Public Sub TryObjList()

Dim listSize As Integer = 0

Dim objHandle As IntPtr = IntPtr.Zero

Dim bBuffer As IntPtr = IntPtr.Zero

Dim bbBuffer(1000) As Byte

Dim bytesRead As Integer = 0

Dim CWBOBJ_RC_SPLFENDOFFILE As Integer = (6000 + 8)

m_LastError = cwbOBJ_CreateListHandle(m_SystemName,
enumObjListType.CWBOBJ_LIST_SPLF, m_Handle_ObjList, m_Handle_Error)

m_LastError = cwbOBJ_OpenList(m_Handle_ObjList,
enumObjListOpenType.CWBOBJ_LIST_OPEN_SYNCH, m_Handle_Error)

m_LastError = cwbOBJ_GetListSize(m_Handle_ObjList, listSize,
enumObjListStatus.CWBOBJ_LISTSTS_COMPLETED, m_Handle_Error)

For n As Integer = 0 To listSize - 1

Debug.WriteLine("-------------splf " & n.ToString & "
------------------")

m_LastError = cwbOBJ_GetObjHandle(m_Handle_ObjList, n,
objHandle, m_Handle_Error)

m_LastError = cwbOBJ_OpenSplF(objHandle, m_Handle_Error)

m_LastError = cwbOBJ_SeekSplF(objHandle,
enumSeekOrigin.CWBOBJ_SEEK_BEGINNING, 0, m_Handle_Error)

Do Until m_LastError = CWBOBJ_RC_SPLFENDOFFILE

bBuffer = Marshal.AllocHGlobal(1000)

m_LastError = cwbOBJ_ReadSplF(objHandle, bBuffer, 1000,
bytesRead, m_Handle_Error)

Marshal.Copy(bBuffer, bbBuffer, 0, 1000)

'Debug.WriteLine(System.Text.Encoding.ASCII.GetString(bbBuffer))

Debug.WriteLine(Marshal.PtrToStringUni(bBuffer))

Array.Clear(bbBuffer, 0, 1000)

Try

Marshal.FreeHGlobal(bBuffer)

Catch ex As Exception

End Try

Loop

m_LastError = cwbOBJ_CloseSplF(objHandle, m_Handle_Error)

m_LastError = cwbOBJ_DeleteObjHandle(objHandle,
m_Handle_Error)

objHandle = New IntPtr

Next

m_LastError = cwbOBJ_CloseList(m_Handle_ObjList, m_Handle_Error)

m_LastError = cwbOBJ_DeleteListHandle(m_Handle_ObjList,
m_Handle_Error)

End Sub