libhpcalcs: portable (Windows / MacOS X / Linux) connectivity kit library

[debrouxl]

Thanks
An access fault in strrchr means that its argument points to nowhere sane... which, in turn, means that basename returned something unexpected to me, possibly NULL.
Under Linux, `man basename` shows no relevant way for dirname() and basename() to return NULL, so I didn't bother adding a check. What does `man basename` say on MacOS X ?

Also, for testing purposes, try replacing

Code:

char * file = basename(filepath);
char * extension = strrchr(file, '.');

by something along the lines of

Code:

char * duplicated = strdup(filepath);
char * file = basename(duplicated);
char * extension = strrchr(file, '.');
free(duplicated);

(I'm going to do something pretty much that, with more error checking, for portability purposes)