Re: [GLib] How to get substrings?

[Martyn Russell <martyn russell bt com>]

On Tue, 2004-11-09 at 09:06 -0800, Alan M. Evans wrote:
> Isn't that a bit much? How about...

You probably would want to move pos1 on the length of needle1  before
looking for needle2 first, otherwise if you look for something between
"$" and "$" pos2 will be the same as pos1.

E.g.:

> gchar*
> substring_between2(gchar* haystack, gchar* needle1, gchar* needle2)
> {
>     gchar* pos1;
>     gchar* pos2;
>
>     if( haystack == NULL || needle1 == NULL || needle2 == NULL )
>         return NULL;
>     pos1 = g_strrstr( (const gchar*) haystack,
>                        (const gchar*) needle1 );
>     if( pos1 == NULL )
>         return NULL;

      pos1 += strlen (needle1);

>     pos2 =  g_strrstr( (const gchar*) pos1,
>                        (const gchar*) needle2);
>     if( pos2 == NULL )
>         return NULL;
>     return g_strndup(pos1, pos2-pos1);
> }

-- 
Regards,
Martyn