Hi All

I have got this new idea that i want to make a java interpreter.

so if i wrote "#!/usr/local/java/bin/java JavaInterpreter" in top of my
script files it would call my java class which would compile the content of
the file and execute it. - my problem is how to get the content into my java
class, thought it was just a matter of reading from stdin.

cause if i write "#!/bin/more" in top of my script file it will write the
content to the console which is exactly what i expected, but if use my
JavaInterprenter class nothing happens - even though
> echo "Hello World" | /usr/local/java/bin/java JavaInterprenter
works just fine.

Regards Claus

At 2007-09-05 11:21AM, "Claus Reimer" wrote:
> Hi All
>
> I have got this new idea that i want to make a java interpreter.
>
> so if i wrote "#!/usr/local/java/bin/java JavaInterpreter" in top of my
> script files it would call my java class which would compile the content of
> the file and execute it. - my problem is how to get the content into my java
> class, thought it was just a matter of reading from stdin.
>
> cause if i write "#!/bin/more" in top of my script file it will write the
> content to the console which is exactly what i expected, but if use my
> JavaInterprenter class nothing happens - even though
> > echo "Hello World" | /usr/local/java/bin/java JavaInterprenter
> works just fine.

The exec(2) man page on an older Solaris box here says:

An interpreter file begins with a line of the form

#! pathname [arg]

where pathname is the path of the interpreter, and arg is an
optional argument. When an interpreter file is executed, the
system invokes the specified interpreter. The pathname
specified in the interpreter file is passed as arg0 to the
interpreter. If arg was specified in the interpreter file,
it is passed as arg1 to the interpreter. The remaining argu-
ments to the interpreter are arg0 through argn of the origi-
nally exec'd file. The interpreter named by pathname must
not be an interpreter file.

So, your JavaInterprenter (sic?) should expect an argument containing
the file name of your script ("interpreter file" above). If absent,
then it can read commands from stdin.

--
Glenn Jackman
"You can only be young once. But you can always be immature." -- Dave Barry

You're probably putting too much crack in, or the wrong way.
Idiot.

Dan