[pacman-dev] configurable shell for install scripts

[Allan McRae]

On 29/03/10 05:03, Aaron Griffin wrote:
> On Sun, Mar 28, 2010 at 8:18 AM, Florian Pritz
> <bluewind at server-speed.net>  wrote:
>> On 28.03.2010 14:27, Allan McRae wrote:
>>> On 28/03/10 22:12, Dieter Plaetinck wrote:
>>>> Hi Allan,
>>>>
>>>> can't we use shebangs instead of inventing our own which-shell-to-use
>>>> implementation? (#!/bin/sh, #!/bin/bash, ..)
>>>
>>> No we can not unless I am missing something.  We need to source the
>>> script and run a particular function within that script.
>>
>> head -n1 installscript | grep '^#!/.*$'
>
> Or:
>
> #define BUFSIZ 1024
>
> int bufsiz = BUFSIZ;
> char buffer[BUFSIZ+1];
> int fd = open(scriptlet, O_RDONLY);
> int bytes = getline(&buffer,&bufsiz, fd);
>
> if(buffer[0] == '#'&&  buffer[1] == '!') {
>      char *shell = strdup(buffer+2);
>      ....
> }
>

I actually like that approach better that defining a default shell.  I 
will look into implementing it.

Allan