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Gracefully handle unreadable directories #86

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merged 3 commits into from Aug 22, 2018

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@owst
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owst commented Aug 18, 2018

If there is an unreadable directory considered by ripper-tags, an exception is raised:

.../lib/ripper-tags/data_reader.rb:59:in `open': Permission denied @ dir_initialize - foo/bar (Errno::EACCES)
	from .../lib/ripper-tags/data_reader.rb:59:in `entries'
	from .../lib/ripper-tags/data_reader.rb:59:in `resolve_file'
	from .../lib/ripper-tags/data_reader.rb:63:in `block in resolve_file'

(tested with 0.6.0)

This PR gracefully handles such directories, by skipping them (and logging if --verbose is given).

To reproduce the existing behaviour, run:

$ mkdir -p a/b
$ touch a/b/c.rb
$ chmod 355 a/b
$ ripper-tags --tag-file=/dev/null --recursive --verbose a # Errors

with this PR, we now have

$ bundle exec bin/ripper-tags --tag-file=/dev/null --recursive --verbose a
Ignoring unreadable directory `a/b'
@mislav

Nice catch! Thank you for handling this.

@@ -75,6 +71,21 @@ def resolve_file(file, depth = 0, &block)
end
end
def resolve_files_in_directory(directory, depth, &block)
unless File.readable?(directory)

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@mislav

mislav Aug 20, 2018

Collaborator

Instead of checking File.readable? could we handle an exception from Dir.entries?

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@owst

owst Aug 21, 2018

Contributor

Thanks for the review - sure, I've pushed a fixup to do that

owst and others added some commits Aug 18, 2018

Simplify skipping unreadable directories
The `rescue Errno::EACCES` clause now only applies to `Dir.entries()`
call and not to the yielded block.

@mislav mislav force-pushed the owst:handle_unreadable_directories branch from 209f8f7 to 131dbcf Aug 22, 2018

@mislav

mislav approved these changes Aug 22, 2018

@mislav mislav merged commit bcc3b1b into tmm1:master Aug 22, 2018

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