On 12/13/2013 5:00 PM, Dfr wrote:
Hello
I trying to write simple wrapper around pcre and have problem passing
strings to it. As i understood, the best way is std.string.toStringZ.
So, my code look like:
string pattern = "....";
pcre_compile2( toStringz(pattern), options, &errcode, &errmsg,
&erroffset, cast(char*)null);
This gives me error:
Error: function pcre_compile2 (char*, int, int*, char**, int*, char*) is
not callable using argument types (immutable(char)*, int, int*, char**,
int*, char*)
Any ideas for better way to do this task ?
Declare the function to like so:
pcre* pcre_compile2( const(char)*, int, int*, const(char)**, int*,
const(ubyte)*);
This matches the C declaration according to [1]. immutable args can be
passed to const params without seeing your error. Also, note the last
paramters. In C, it's declared to be const unsigned char* and the
documentation suggest it's intended to be treated as a byte array rather
than a string. In that case, const(ubyte)* is the appropriate choice. D
declarations of C functions should generally match the C version as
closely as possible, including use of const, but with intent taken into
account as well (e.g. byte array vs string).
[1]
https://code.google.com/p/wiimc/source/browse/trunk/libs/pcre/doc/html/pcre_compile2.html?r=423
