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Packaging with SWT [message #455362]

Fri, 13 May 2005 04:16

Eclipse User

Originally posted by: xyzzy.foo.gmail.com

Is there a way to package a program with SWT so that it can be run on a
machine where SWT has not been previously installed and so that the
users do not need to install SWT?

-Matt

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Re: Packaging with SWT [message #455370 is a reply to message #455362]

Fri, 13 May 2005 09:01

Stefan Langer

Messages: 236
Registered: July 2009

Senior Member

Matt Dordal wrote:
> Is there a way to package a program with SWT so that it can be run on a
> machine where SWT has not been previously installed and so that the
> users do not need to install SWT?
>
> -Matt
Besides adding the swt jars you have to copy the appropriate dll, so,
etc(Depending on your target platform) to the machine and make it
available to your VM via the "-Djava.library.path" property.

Regards
Stefan

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Re: Packaging with SWT [message #455409 is a reply to message #455370]

Fri, 13 May 2005 14:06

Eclipse User

Originally posted by: martin.j.nilsson.sverige.nu

> Besides adding the swt jars you have to copy the appropriate dll, so,
> etc(Depending on your target platform) to the machine and make it
> available to your VM via the "-Djava.library.path" property.

Just a side-note; you can easily package the DLL(s) inside your jar and
extract them the first time the application is run. Yes, you will leave a
trace of your application (the dll-file) on your user's hard drive, but
IMHO that is not a big issue. If it is I guess you could remove it when
the program quits (at least if it ended normally and not by a kill -9 or
something), but that means that it would have to be extracted on every
start of the application, not just the first.

regards,
martin

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Re: Packaging with SWT [message #455452 is a reply to message #455362]

Sat, 14 May 2005 23:01

No real name

Messages: 97
Registered: July 2009

Member

"Matt Dordal" <xyzzy.foo@gmail.com> wrote in message
news:d61a6i$vdq$1@news.eclipse.org...
> Is there a way to package a program with SWT so that it can be run on a
> machine where SWT has not been previously installed and so that the
> users do not need to install SWT?

You can find source code for self-extracting and implementing jar file
for SWT from the following url. You can figure out how you can
port into your system;

http://www.roselladb.com/freeware/Sej.tar

Note that it's "tar"-red file!

>
> -Matt

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Re: Packaging with SWT [message #455453 is a reply to message #455409]

Sun, 15 May 2005 05:33

user

Messages: 296
Registered: July 2009

Senior Member

Martin J Nilsson wrote:
> Just a side-note; you can easily package the DLL(s) inside your jar and
> extract them the first time the application is run. Yes, you will leave
> a trace of your application (the dll-file) on your user's hard drive,
> but IMHO that is not a big issue. If it is I guess you could remove it
> when the program quits (at least if it ended normally and not by a kill
> -9 or something), but that means that it would have to be extracted on
> every start of the application, not just the first.
>
>
> regards,
> martin
>
That would seem to be the best. I don't paticularly care if the program
leaves the dll, but I don' want the program to require additional
installation if that can be automated.
How would I set the JAR up to extract the file on the first run?

Thanks,
Matt

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Re: Packaging with SWT [message #455455 is a reply to message #455453]

Sun, 15 May 2005 05:59

No real name

Messages: 97
Registered: July 2009

Member

<user@domain.invalid> wrote in message news:d66ngm$se0$1@news.eclipse.org...
> Martin J Nilsson wrote:
> > Just a side-note; you can easily package the DLL(s) inside your jar and
> > extract them the first time the application is run. Yes, you will leave
> > a trace of your application (the dll-file) on your user's hard drive,
> > but IMHO that is not a big issue. If it is I guess you could remove it
> > when the program quits (at least if it ended normally and not by a kill
> > -9 or something), but that means that it would have to be extracted on
> > every start of the application, not just the first.
> >
> >
> > regards,
> > martin
> >
> That would seem to be the best. I don't paticularly care if the program
> leaves the dll, but I don' want the program to require additional
> installation if that can be automated.
> How would I set the JAR up to extract the file on the first run?

The following file has sample codes how you can do it!
Note that it tar archive file.
http://www.roselladb.com/freeware/Sej.tar

Regards,

>
> Thanks,
> Matt

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Re: Packaging with SWT [message #455456 is a reply to message #455453]

Sun, 15 May 2005 06:15

No real name

Messages: 97
Registered: July 2009

Member

<user@domain.invalid> wrote in message news:d66ngm$se0$1@news.eclipse.org...
> Martin J Nilsson wrote:
> > Just a side-note; you can easily package the DLL(s) inside your jar and
> > extract them the first time the application is run. Yes, you will leave
> > a trace of your application (the dll-file) on your user's hard drive,
> > but IMHO that is not a big issue. If it is I guess you could remove it
> > when the program quits (at least if it ended normally and not by a kill
> > -9 or something), but that means that it would have to be extracted on
> > every start of the application, not just the first.
> >
> >
> > regards,
> > martin
> >
> That would seem to be the best. I don't paticularly care if the program
> leaves the dll, but I don' want the program to require additional
> installation if that can be automated.
> How would I set the JAR up to extract the file on the first run?
>

Testing SWT implementation is easy;

try {
int k = org.eclipse.swt.SWT.DEFAULT;
// your system is already SWT installed!
} catch (Throwable t) {
// call SWT installation routines
// you may need to restart here. you better test this!
}

> Thanks,
> Matt

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Re: Packaging with SWT [message #455462 is a reply to message #455453]

Mon, 16 May 2005 08:01

Eclipse User

Originally posted by: martin.j.nilsson.sverige.nu

Matt,

This is how I would do it, I'm sure there are multiple ways of improving
this code.

private boolean checkSWTInstallation(String swtDllName) {
File javaHome = new File(System.getProperty("java.home"));
File javaBin = new File(javaHome, "bin");
File swtdllDest = new File(javaBin, swtDllName);

if (!swtdllDest.isFile()) {
try {
InputStream is = getClass().getResourceAsStream("resource/" +
swtDllName);
if (is == null) {
return false;
}
try {
OutputStream os = new FileOutputStream(swtdllDest);
try {
byte[] buf = new byte[4096];
for (;;) {
int actual = is.read(buf);
if (actual <= 0) {
break;
}
os.write(buf, 0, actual);
}
} finally {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (IOException iox) {
iox.printStackTrace();
return false;
}
}
return true;
}

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