Sometimes, users run restic without retaining the local cache
directories. This was reported several times in the past.
Restic will now print a message whenever a new cache directory is
created from scratch (i.e. it did not exist before), so users have a
chance to recognize when the cache is not kept between different runs of
restic.
With --blob, --tree and --pack, the find command now lists the snapshots
that contain a specific tree or blob, or the snapshots that contain
blobs belonging to a given pack.
It also displays the pack ID a blob belongs to.
A list of IDs can be given, as long as the IDs are all of the same type.
This commit adds a command called `self-update` which downloads the
latest released version of restic from GitHub and replacing the current
binary with it. It does not rely on any external program (so it'll work
everywhere), but still verifies the GPG signature using the embedded GPG
public key.
By default, the `self-update` command is hidden behind the `selfupdate`
built tag, which is only set when restic is built using `build.go`. The
reason for this is that downstream distributions will then not include
the command by default, so users are encouraged to use the
platform-specific distribution mechanism.
This commit introduces two functions: withinDir() and
approachingMatchingTree()
Both bind the list of directories with a closure, so we don't need to
iterate over the list in the function passed to Walk(). This reduces the
indentation level and since we can just use return, we don't need the
breaks any more.
The case that len(dirs) == 0 can also be handled by the functions with a
return, which saves another indentation level.
The main function body of the function passed to Walk() was reduced to
three cases:
* Within one of the dirs: Print the node, and if recursive operation is
requested, directly return, so the walker continues recursive
traversal
* Approaching one of the dirs: don't print anything, but continue
recursive traversal.
* Nothing of the two: abort walking this branch of the tree.
