Re: [Haserl-users] /usr/bin/env and --shell=lua

[Nathan A. <na...@no...>]

Natanael Copa wrote:
> Hi,
> 
> I'm trying to make a portable haserl script. I develop on my freebsd laptop but the target is a linux/uclibc box.
> 
> On the freebsd box haserl is in /usr/local/bin but on the linux it is in /usr/bin
> 
> Normally with other scripting languages like php, you can avoid changing the #! line in all your files by using /usr/bin/env:
> 
> #!/usr/bin/env php
> 
> I tried to run haserl the same way:
> 
> #!/usr/bin/env haserl --shell=lua
> 
> but then haserl just waits for input on stdin.

What you are trying to do is run haserl with command-line options:

haserl --shell=lua

In reality, Haserl does not accept command line arguments, for the same
reason php does not accept command-line arguments in CGI mode.  (see
http://www.php.net/manual/en/security.cgi-bin.php the first section)

What actually happens is haserl accepts only the first command-line
option (the filename), it opens that file, and reads the first line for
"command-line-like" arguments.

> 
> Any ideas how to make portable haserl scripts?

The real problem is that haserl masks the problem by using this
command-line-like method for setting flags that probably should be done
in a config file (php uses php.ini) or some other method.

To solve your specific problem, haserl could be enhanced to look for the
first arg that contains the phrase "haserl" - which works until someone
renames the binary. :-/

What might be better if there were a smarter way of setting things like
"shell", "upload limit", "upload directory", "debug mode" etc.

I'm open to suggestions.