Tcl Source Code

This patch contains two fixes.  The first fix is an 
added method execOS400.  This method is called to 
execute commands in the POSIX shell.  It was necessary 
to have a separate execOS400 from the execUnix because 
the 'cd' to the working directory had to be quoted 
differently to avoid an error message when the user 
does not have a home directory.  What was happening 
was the cd and the directory path were being 
interpreted as two commands.  The cd command would try 
to change directories to the user home, and if it 
didn't exist, the TCL user would get an error message 
to this effect every time a command is exec'ed.


The second fix is in the cmdProc method.  OS/400 runs 
in EBCDIC vs ASCII character encodings.  Thus, any 
call to an POSIX command such as ls will return it's 
results in an EBCDIC code page.  When the result is 
returned to Java under the original implementation, it 
was interpreted incorrectly and resulted in 
unprintable characters.  The fix in the attached file 
checks for the existence of a Java property 
tcl.lang.childEncoding, that the user of TCL can set 
to the name of their code page, for instance "Cp037" 
is the English EBCDIC code page.  If this property 
exists, the stderr and stdout of the process returned 
by Runtime.exec are converted from the given code 
page.  If the property doesn't exist, it will use the 
original implementation (no conversion).

This fix has been tested on OS/400 v4r4, v4r5, and and 
early version of v5r1.

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The attached patch is for Jacl, not Tcl.  It should
be contributed to the tcljava project, not here.

File Added - 4948: ExecCmd.java