about summary refs log tree commit diff
path: root/third_party/git/templates/hooks--fsmonitor-watchman.sample
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/git/templates/hooks--fsmonitor-watchman.sample')
-rwxr-xr-xthird_party/git/templates/hooks--fsmonitor-watchman.sample114
1 files changed, 0 insertions, 114 deletions
diff --git a/third_party/git/templates/hooks--fsmonitor-watchman.sample b/third_party/git/templates/hooks--fsmonitor-watchman.sample
deleted file mode 100755
index e673bb3980..0000000000
--- a/third_party/git/templates/hooks--fsmonitor-watchman.sample
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/usr/bin/perl
-
-use strict;
-use warnings;
-use IPC::Open2;
-
-# An example hook script to integrate Watchman
-# (https://facebook.github.io/watchman/) with git to speed up detecting
-# new and modified files.
-#
-# The hook is passed a version (currently 1) and a time in nanoseconds
-# formatted as a string and outputs to stdout all files that have been
-# modified since the given time. Paths must be relative to the root of
-# the working tree and separated by a single NUL.
-#
-# To enable this hook, rename this file to "query-watchman" and set
-# 'git config core.fsmonitor .git/hooks/query-watchman'
-#
-my ($version, $time) = @ARGV;
-
-# Check the hook interface version
-
-if ($version == 1) {
-	# convert nanoseconds to seconds
-	$time = int $time / 1000000000;
-} else {
-	die "Unsupported query-fsmonitor hook version '$version'.\n" .
-	    "Falling back to scanning...\n";
-}
-
-my $git_work_tree;
-if ($^O =~ 'msys' || $^O =~ 'cygwin') {
-	$git_work_tree = Win32::GetCwd();
-	$git_work_tree =~ tr/\\/\//;
-} else {
-	require Cwd;
-	$git_work_tree = Cwd::cwd();
-}
-
-my $retry = 1;
-
-launch_watchman();
-
-sub launch_watchman {
-
-	my $pid = open2(\*CHLD_OUT, \*CHLD_IN, 'watchman -j --no-pretty')
-	    or die "open2() failed: $!\n" .
-	    "Falling back to scanning...\n";
-
-	# In the query expression below we're asking for names of files that
-	# changed since $time but were not transient (ie created after
-	# $time but no longer exist).
-	#
-	# To accomplish this, we're using the "since" generator to use the
-	# recency index to select candidate nodes and "fields" to limit the
-	# output to file names only. Then we're using the "expression" term to
-	# further constrain the results.
-	#
-	# The category of transient files that we want to ignore will have a
-	# creation clock (cclock) newer than $time_t value and will also not
-	# currently exist.
-
-	my $query = <<"	END";
-		["query", "$git_work_tree", {
-			"since": $time,
-			"fields": ["name"],
-			"expression": ["not", ["allof", ["since", $time, "cclock"], ["not", "exists"]]]
-		}]
-	END
-
-	print CHLD_IN $query;
-	close CHLD_IN;
-	my $response = do {local $/; <CHLD_OUT>};
-
-	die "Watchman: command returned no output.\n" .
-	    "Falling back to scanning...\n" if $response eq "";
-	die "Watchman: command returned invalid output: $response\n" .
-	    "Falling back to scanning...\n" unless $response =~ /^\{/;
-
-	my $json_pkg;
-	eval {
-		require JSON::XS;
-		$json_pkg = "JSON::XS";
-		1;
-	} or do {
-		require JSON::PP;
-		$json_pkg = "JSON::PP";
-	};
-
-	my $o = $json_pkg->new->utf8->decode($response);
-
-	if ($retry > 0 and $o->{error} and $o->{error} =~ m/unable to resolve root .* directory (.*) is not watched/) {
-		print STDERR "Adding '$git_work_tree' to watchman's watch list.\n";
-		$retry--;
-		qx/watchman watch "$git_work_tree"/;
-		die "Failed to make watchman watch '$git_work_tree'.\n" .
-		    "Falling back to scanning...\n" if $? != 0;
-
-		# Watchman will always return all files on the first query so
-		# return the fast "everything is dirty" flag to git and do the
-		# Watchman query just to get it over with now so we won't pay
-		# the cost in git to look up each individual file.
-		print "/\0";
-		eval { launch_watchman() };
-		exit 0;
-	}
-
-	die "Watchman: $o->{error}.\n" .
-	    "Falling back to scanning...\n" if $o->{error};
-
-	binmode STDOUT, ":utf8";
-	local $, = "\0";
-	print @{$o->{files}};
-}