memmap is unmaintained at this point and it is being flagged as a
RUSTSEC advisory in ripgrep. This doesn't seem like that big of a deal
to me honestly, but memmap2 looks like a fine choice at this point.
Fixes#1785, Closes#1786
It seems that PowerShell uses sockets instead of FIFOs to redirect the
output between commands. So add `is_socket` to our `is_readable_stdin`
check.
This seems unlikely to cause problems and it probably more generally
correct than what we had before. In theory, it could cause problems if
it produces false positives, in which case, ripgrep will try to read
stdin when it should search the current working directory. (And this
usually winds up manifesting as ripgrep blocking forever.) But, if the
stdin handle reports itself as a socket, then it seems like we should
read it.
Fixes#1741, Closes#1742
`ignore::Error` wraps `std::io::Error` with additional information
(as well as expose non-IO errors). For people wanting to inspect what
the error is, they have to recursively match the Enum. This provides
`io_error` and `into_io_error` helpers to do this for the user.
PR #1740
This updates encoding_rs, crossbeam-utils and crossbeam-channel. This
serves two purposes. The encoding_rs update fixes a compilation failure
on the latest nightly. The crossbeam updates are good sense and to
reduce duplicate dependencies such as cfg-if. (Although, we note that
the log crate still pulls in cfg-if 0.1, so ripgrep has a duplicate
dependency there for now. But it's very small.)
Fixes#1721, Closes#1705
Bazel supports `BUILD.bazel` as well as `WORKSPACE.bazel`. In
addition, it is common to ship BUILD/WORKSPACE templates for
external repositories suffixed with .bazel for easier tool
recognition.
Co-authored-by: Brandon Adams <brandon.adams@imc.com>
PR #1716
Since the translation from a glob to a regex always
disables Unicode in the regex, it follows that we shouldn't
need regex's Unicode features enabled.
Now, ripgrep enables Unicode features in its regex
dependency and of course uses them, which will cause
globset to have it enabled in the ripgrep build as well. So
this doesn't actually change anything for ripgrep. But this
does slim thing downs for folks using globset independently
of ripgrep.
PR #1712
We use '+++' syntax to output a literal '**' for a '--glob' example.
This '+++' syntax is pretty ugly when rendered literally via --help. We
fix this by hackily inserting the '+++' syntax for its one specific case
that we need it during man page generation.
Not ideal but it works. And --help still has some '*foo*' markup, but we
live with that for now.
Fixes#1581
Adds `WalkBuilder::filter_entry` that takes a predicate to be applied to
all entries. If the predicate returns `false` on a given entry, that
entry and all children will be skipped.
Fixes#1555, Closes#1557
While Linux distributions (at least Arch Linux, RHEL, Debian) do not support
compressing files with compress(1), macOS & AIX do (the utility is part of
POSIX). Additionally, gzip is able to uncompress such compressed files and
provides an `uncompress` binary.
Closes#1547
It has grown quite long. It would be nice if we could shorten this only
when -h is used and keep it long for --help, but it seems clap doesn't
let this happen. (It does have `about` and `long_about` options, but
they don't work, even when I disable the use of the template.)
The longer prelude is now only available in the man page.
This addresses #189.
When a pattern with invalid UTF-8 is given, the error message suggests
unqualified use of hex escape sequences to match arbitrary bytes. But
you *also* need to disable Unicode mode. So include that in the error
message.
Fixes#1339
In order to implement --count-matches, we simply re-execute the regex on
the spans reported by the searcher. The spans always correspond to the
lines that participated in the match. This is the correct thing to do,
except when the regex contains look-ahead (or look-behind).
In particular, the look-around permits the regex's match success to
depends on an arbitrary point before or after the lines actually
reported as participating in the match. Since only the matched lines are
reported to the printer, it is possible for subsequent searching on
those lines to fail.
A true fix for this would somehow make the total span available to the
printer. But that seems tricky since it isn't always available. For
PCRE2's case in multiline mode, it is available because we force it to
be so for correctness.
For now, we simply detect this corner case heuristically. If the match
count is zero, then it necessarily means there is some kind of
look-around that isn't matching. So we set the match count to 1. This is
probably incorrect in some cases, although my brain can't quite come up
with a concrete example. Nevertheless, this is strictly better than the
status quo.
Fixes#1573
This replaces the use of channels in the parallel directory traversal
with a simple stack. The primary motivation for this change is to reduce
peak memory usage. In particular, when using a channel (which is a
queue), we wind up visiting files in a breadth first fashion. Using a
stack switches us to a depth first traversal. While there are no real
intrinsic differences, depth first traversal generally tends to use less
memory because directory trees are more commonly wide than they are
deep.
In particular, the queue/stack size itself is not the only concern. In
one recent case documented in #1550, a user wanted to search all Rust
crates. The directory structure was shallow but extremely wide, with a
single directory containing all crates. This in turn results is in
descending into each of those directories and building a gitignore
matcher for each (since most crates have `.gitignore` files) before ever
searching a single file. This means that ripgrep has all such matchers
in memory simultaneously, which winds up using quite a bit of memory.
In a depth first traversal, peak memory usage is much lower because
gitignore matches are built and discarded more quickly. In the case of
searching all crates, the peak memory usage decrease is dramatic. On my
system, it shrinks by an order magnitude, from almost 1GB to 50MB. The
decline in peak memory usage is consistent across other use cases as
well, but is typically more modest. For example, searching the Linux
repo has a 50% decrease in peak memory usage and searching the Chromium
repo has a 25% decrease in peak memory usage.
Search times generally remain unchanged, although some ad hoc benchmarks
that I typically run have gotten a bit slower. As far as I can tell,
this appears to be result of scheduling changes. Namely, the depth first
traversal seems to result in searching some very large files towards the
end of the search, which reduces the effectiveness of parallelism and
makes the overall search take longer. This seems to suggest that a stack
isn't optimal. It would instead perhaps be better to prioritize
searching larger files first, but it's not quite clear how to do this
without introducing more overhead (getting the file size for each file
requires a stat call).
Fixes#1550
