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Misc tidy up #77

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Misc tidy up #77

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JOT85
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@JOT85 JOT85 commented Jan 4, 2021

I'm about to make a couple of PRs but, before that, I've spent a bit of time tidying a few things up. These are only minor things, including:

  • use std::fs::read_to_string function,
  • use lines method on a BufReader,
  • use iterators directly rather than collecting everything in to a vec (removes a bunch of allocation),
  • add a couple of debug_asserts,
  • a little bit of general formatting (mixed tabs -> all spaces, correct indentation levels etc),
  • fixing clippy lints.

I've also added /usr/lib/os-release as a fallback to /etc/os-release as specified in the man page.

Thanks for your time :)

This includes:
- using the `std::fs::read_to_string` function,
- using the `lines` method on a `BufReader`,
- iterators directly rather than collecting everything in to a vec,
- adding a couple of `debug_assert`s,
- a little bit of general formatting (mixed tabs -> all spaces, correct
  indentation levels etc).

`man os-release` specifies that `/usr/lib/os-release` should be used if
`/etc/os-release` can't.
@JOT85
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JOT85 commented Jan 8, 2021

Merge conflict from #78 resolved :)

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