Function getDirname

src/e9tool/e9misc.cpp:103–120

* Get the source directory name. */

 * Get the source directory name.
 */
const char *getDirname(const char *dir, const char *file, char *tmp,
    size_t size)
{
    char *abs = (char *)getAbsname(dir, file, tmp, size);
    if (abs == nullptr)
        return nullptr;
    char *last = strrchr((char *)abs, '/');
    if (last == nullptr)
        return nullptr;
    size_t len = last-abs+1;
    if (abs == file)
    {
        memcpy(tmp, file, len);
        abs = tmp;
    }
    abs[len] = '\0';
    return abs;
}

/*
 * Get the source base name.