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pre-commit_hook_doesn_t_run_during_arc_land
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bougyman
Oct 7 2014, 5:40 PM
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pre-commit_hook_doesn_t_run_during_arc_land
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#!/usr/bin/env ruby
#
# A hook script to verify that only syntactically valid ruby code is commited.
# Called by git-commit with no arguments. The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.
#
# Put this code into a file called "pre-commit" inside your .git/hooks
# directory, and make sure it is executable ("chmod +x .git/hooks/pre-commit")
require 'open3'
require "pry"
include Open3
# Set this to true if you want warnings to stop your commit
stop_on_warnings = (`git config --bool hooks.stop-on-warnings` != "true\n")
# Set this to true if you want to skip erb files
skip_erb_files = (`git config --bool hooks.skip-erb-files` == "false\n")
ematch = /error/i
excluded_errors = []
warnings = []
compiler_ruby = `which rubocop`.strip
if compiler_ruby.length > 0
excluded_errors << %r{warning: parser/current is loading parser/ruby21, which recognizes}
excluded_errors << /warning: 2\.1\.2-compliant syntax, but you are running 2\.1\.3\./
ematch = /Offenses:/
compiler_ruby << " -l"
end
if compiler_ruby.length == 0
warnings << /[0-9]+:\s+warning:/
compiler_ruby = `which rbx`.strip
compiler_ruby = `which ruby`.strip if compiler_ruby.length == 0
compiler_ruby << " -wc"
end
changed_ruby_files = `git diff-index --name-only --cached HEAD`.split("\n").inject([]) do |files, line|
files << line.chomp if line =~ /(.+\.(e?rb|task|rake|thor)|[Rr]akefile|[Tt]horfile)/
files
end
problem_files = changed_ruby_files.inject([]) do |problematic_files, file|
if File.readable? file
cmd = if file =~ /\.erb\z/
# Set trim mode to "-", just as Rails does
"erb -xT - #{file} | #{compiler_ruby} -wc" unless skip_erb_files
else
"#{compiler_ruby} #{file}"
end
unless cmd.nil? then
errors = []
output = []
popen3(cmd) do |stdin, stdout, stderr|
_out = Thread.new do
while line = stdout.gets
output << line.chomp
if line =~ ematch
errors << line.chomp
ematch = // if ematch == /Offenses:/
end
end
end
_err = Thread.new do
while line = stderr.gets
errors << line.chomp
end
end
_out.join
_err.join
end
warnings.each do |matcher|
errors.reject!{ |line| line =~ matcher } unless stop_on_warnings
end
excluded_errors.each do |matcher|
errors.reject!{ |line| line =~ matcher }
end
unless errors.empty?
errors.map!{ |line| line.sub(/#{file}:/, '') }
problematic_files << "#{file}:\n#{errors.join("\n")}"
end
end
end
problematic_files
end
if problem_files.size > 0
$stderr.puts problem_files.join("\n")
$stderr.flush
puts "Would you like to commit anyway?"
$stdout.flush
STDIN.reopen('/dev/tty')
yesno = STDIN.gets
STDIN.close
if yesno.to_s.match(/^y/i)
puts "Ok, your call, buddy, proceeding with commit"
$stdout.flush
sleep 2
exit 0
else
exit 1
end
else
# All is well
exit 0
end

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