Fix c_str redesign errors

[dead10ck]

• Fixes the compilation errors caused by the recent c_str redesign.
• int/uint have been renamed to isize/usize
• Changes tabs to be 4 spaces per the guideline.
• Fixes a few compiler warnings, including using the new slicing syntax.

[hannobraun]

Aside from the offset(1) thing, which I'm unsure about, all looks well! Thank you, @dead10ck!

The offset seems to be used for the name of the file that's changed. None of the automated tests cover this functionality. I think the best solution would be to add a test for this, so we can be sure the code was right. As before, I will get to it on Monday, or you can take a look, if you want.

Thanks again for all your work!

[hannobraun]

Regarding the unstable warnings, I've opened a separate issue: #11.

[dead10ck]

@hannobraun yeah, the offset thing should be checked before this is merged, but I won't have time to do it this weekend :/ and no problem!

[hannobraun]

@dead10ck Ok, I'll pick it up on Monday then :)

[hannobraun]

Merged manually. The offset(1) was indeed needed. The reason is that the inotify_event struct originally contains an optional string as its last field. Since I don't know how to represent that in Rust (not sure it can be), this requires some trickery when reading the name. See the man page for all the details.

Thanks again, @dead10ck, for the great work!

[dead10ck]

Ahh, I see. Sorry, I'm still new to Rust, and I haven't worked with lower-level FFI stuff yet, so I wasn't familiar with how all of that worked. I'm glad I was able to help with the other stuff though :)

[hannobraun]

No need to apologize, that part of the code is a bit icky. We have a test for it now, so this problem shouldn't come up any more.