I've just discovered that shebang line has a (very short) limit. Only 127 bytes are read from line

It means that something like this doesn't work:

#!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/

Is it possible to add a command line switch to read params from a simple file?

For example:


main.d:
#!/usr/bin/rdmd --shebang --params ./rdmd-params.conf
void main() { }

rdmd-params.conf:
-I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/

On Thursday, 9 January 2014 at 11:25:19 UTC, Andrea Fontana wrote:
> I've just discovered that shebang line has a (very short) limit. Only 127 bytes are read from line
>
> It means that something like this doesn't work:
>
> #!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>
> Is it possible to add a command line switch to read params from a simple file?
>
> For example:
>
>
> main.d:
> #!/usr/bin/rdmd --shebang --params ./rdmd-params.conf
> void main() { }
>
> rdmd-params.conf:
> -I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/

Hmmm however that's not a good solution. It would be nice if all what we need was embedded inside the source itself. Any idea?

On Thursday, 9 January 2014 at 11:42:32 UTC, Andrea Fontana wrote:
> On Thursday, 9 January 2014 at 11:25:19 UTC, Andrea Fontana wrote:
>> I've just discovered that shebang line has a (very short) limit. Only 127 bytes are read from line
>>
>> It means that something like this doesn't work:
>>
>> #!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>>
>> Is it possible to add a command line switch to read params from a simple file?
>>
>> For example:
>>
>>
>> main.d:
>> #!/usr/bin/rdmd --shebang --params ./rdmd-params.conf
>> void main() { }
>>
>> rdmd-params.conf:
>> -I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>
> Hmmm however that's not a good solution. It would be nice if all what we need was embedded inside the source itself. Any idea?

I thought DMD already supports a cmdfile? Look at the command line options.

On 2014-01-09 12:25, Andrea Fontana wrote:
> I've just discovered that shebang line has a (very short) limit. Only
> 127 bytes are read from line
>
> It means that something like this doesn't work:
>
> #!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd
> -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>
>
> Is it possible to add a command line switch to read params from a simple
> file?
>
> For example:
>
>
> main.d:
> #!/usr/bin/rdmd --shebang --params ./rdmd-params.conf
> void main() { }
>
> rdmd-params.conf:
> -I/asdasdasdasd/asdasdasdasd/asdasdasdasd
> -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/

@cmdfile       read arguments from cmdfile

-- 
/Jacob Carlborg

On 1/9/14 3:25 AM, Andrea Fontana wrote:
> I've just discovered that shebang line has a (very short) limit. Only
> 127 bytes are read from line
>
> It means that something like this doesn't work:
>
> #!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd
> -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>
>
> Is it possible to add a command line switch to read params from a simple
> file?
>
> For example:
>
>
> main.d:
> #!/usr/bin/rdmd --shebang --params ./rdmd-params.conf
> void main() { }
>
> rdmd-params.conf:
> -I/asdasdasdasd/asdasdasdasd/asdasdasdasd
> -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/

I think that's a shell limitation. I've long had the plan to experiment with it like this: if --shebang is the first argument, rdmd should just read the whole first line and exec() a shell with it. That would solve a variety of issues related to limitations and quoting quirks.

Andrei

Yes I read rdmd but I didn't notice @cmd that was on dmd help, my
fault!

However as I said in my second post, probably it won't solve the
problem: shebang is useful if  you can write a "self-contained"
script, something that fits inside a single file.

I agree with Andrei. It would be a good solution for my case and
it shouldn't break anything.


On Thursday, 9 January 2014 at 21:39:09 UTC, Andrei Alexandrescu
wrote:
> On 1/9/14 3:25 AM, Andrea Fontana wrote:
>> I've just discovered that shebang line has a (very short) limit. Only
>> 127 bytes are read from line
>>
>> It means that something like this doesn't work:
>>
>> #!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd
>> -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>>
>>
>> Is it possible to add a command line switch to read params from a simple
>> file?
>>
>> For example:
>>
>>
>> main.d:
>> #!/usr/bin/rdmd --shebang --params ./rdmd-params.conf
>> void main() { }
>>
>> rdmd-params.conf:
>> -I/asdasdasdasd/asdasdasdasd/asdasdasdasd
>> -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>
> I think that's a shell limitation. I've long had the plan to experiment with it like this: if --shebang is the first argument, rdmd should just read the whole first line and exec() a shell with it. That would solve a variety of issues related to limitations and quoting quirks.
>
> Andrei

On Thursday, 9 January 2014 at 11:25:19 UTC, Andrea Fontana wrote:
> I've just discovered that shebang line has a (very short) limit. Only 127 bytes are read from line
>
> It means that something like this doesn't work:
>
> #!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/

If you need to specify import paths, your script is probably fragile and broken on different linux/bsd distributions.

I don't have a solution.

On 1/9/14 3:40 PM, Andrea Fontana wrote:
> Yes I read rdmd but I didn't notice @cmd that was on dmd help, my
> fault!
>
> However as I said in my second post, probably it won't solve the
> problem: shebang is useful if  you can write a "self-contained"
> script, something that fits inside a single file.
>
> I agree with Andrei. It would be a good solution for my case and
> it shouldn't break anything.

Submit a bug request so it gets done.

Andrei

On Friday, 10 January 2014 at 02:11:27 UTC, Jesse Phillips wrote:
> On Thursday, 9 January 2014 at 11:25:19 UTC, Andrea Fontana wrote:
>> I've just discovered that shebang line has a (very short) limit. Only 127 bytes are read from line
>>
>> It means that something like this doesn't work:
>>
>> #!/usr/bin/rdmd --shebang -I/asdasdasdasd/asdasdasdasd/asdasdasdasd -I/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/qweqweqweqwe/
>
> If you need to specify import paths, your script is probably fragile and broken on different linux/bsd distributions.
>
> I don't have a solution.

It was just an example, of course. It was the easiest way to add some long params :)

On Friday, 10 January 2014 at 05:16:19 UTC, Andrei Alexandrescu wrote:
> On 1/9/14 3:40 PM, Andrea Fontana wrote:
>> Yes I read rdmd but I didn't notice @cmd that was on dmd help, my
>> fault!
>>
>> However as I said in my second post, probably it won't solve the
>> problem: shebang is useful if  you can write a "self-contained"
>> script, something that fits inside a single file.
>>
>> I agree with Andrei. It would be a good solution for my case and
>> it shouldn't break anything.
>
> Submit a bug request so it gets done.
>
> Andrei

Done
https://d.puremagic.com/issues/show_bug.cgi?id=11890