Converting Pack/Unpacked EBCDIC file to ASCII

[kristenzhang]

Suppose I have a Pack/Unpacked EBCDIC file (.upd), what's the easist
way to convert it to an ASCII file (.dat)? Do I need a conversion
table and everything, or can I just do it with a simple Reader/Writer
in Java and do it per byte?? Also, I will have a copybook file to help
me convert & unpack. Please let me know if you have any suggestions!
Thanks lots!

 

[Rhino]

Suppose I have a Pack/Unpacked EBCDIC file (.upd), what's the easist
way to convert it to an ASCII file (.dat)? Do I need a conversion
table and everything, or can I just do it with a simple Reader/Writer
in Java and do it per byte?? Also, I will have a copybook file to help
me convert & unpack. Please let me know if you have any suggestions!
Thanks lots!

This has been discussed many times in the past. A Google Newsgroups search
should turn up the past discussions very quickly.

Rhino

 

[kristenzhang]

i've looked... and none was helpful...

 

[kristenzhang]

at least not in Java...

 

[Rhino]

i've looked... and none was helpful...

Sorry, I just assumed that those old discussions would help you.

I don't have anything to add to what they say.

Rhino

 

[Alex]

public static int EBCDIC(int i)
{
if(i >= 65 && i <= 73)
return (i - 65) + 193;
if(i >= 74 && i <= 82)
return (i - 74) + 209;
if(i >= 83 && i <= 90)
return (i - 83) + 226;
if(i >= 97 && i <= 105)
return (i - 97) + 129;
if(i >= 106 && i <= 114)
return (i - 106) + 145;
if(i >= 115 && i <= 122)
return (i - 115) + 162;
if(i >= 48 && i <= 57)
return (i - 48) + 240;
if(i == 32)
return 64;
return i != 0 ? 0 : 0;
}

That's by definition. But be careful. Very. Because each application
has its own thoughts. For example, if you download text file via
mainframe ftp and then upload it via UNIX ftp result is different. Some
characters like | or ^Z are changed.
Alex Kizub.

 

[Eric Sosman]

public static int EBCDIC(int i)
{
if(i >= 65 && i <= 73)
return (i - 65) + 193;
if(i >= 74 && i <= 82)
return (i - 74) + 209;
if(i >= 83 && i <= 90)
return (i - 83) + 226;
if(i >= 97 && i <= 105)
return (i - 97) + 129;
if(i >= 106 && i <= 114)
return (i - 106) + 145;
if(i >= 115 && i <= 122)
return (i - 115) + 162;
if(i >= 48 && i <= 57)
return (i - 48) + 240;
if(i == 32)
return 64;
return i != 0 ? 0 : 0;
}

Observation #1: I think the O.P. wants to convert in
the other direction.

Observation #2: The method's last statement can probably
be optimized a little ...

 

[Chris Uppal]

Observation #2: The method's last statement can probably
be optimized a little ...

<huge grin/>

-- chris

 

[kristenzhang]

err... yes... i want to convert from EBCDIC to ASCII...

 

[kristenzhang]

oh, and what does "return i != 0 ? 0 : 0" mean? if i not equals to 0,
return something... i've never seen anything like that before.

thanks all