overcommit/lib/overcommit/hook/pre_commit/flay.rb at main · sds/overcommit · GitHub

46 lines (43 loc) · 1.48 KB

# frozen_string_literal: true

module Overcommit::Hook::PreCommit

# Runs `flay` against any modified files.

# @see https://github.com/seattlerb/flay

class Flay < Base

# Flay prints two kinds of messages:

# 1) IDENTICAL code found in :defn (mass*2 = MASS)

# file_path_1.rb:LINE_1

# file_path_2.rb:LINE_2

# 2) Similar code found in :defn (mass = MASS)

# file_path_1.rb:LINE_1

# file_path_2.rb:LINE_2

def run

command = ['flay', '--mass', @config['mass_threshold'].to_s, '--fuzzy', @config['fuzzy'].to_s]

# Use a more liberal detection method

command += ['--liberal'] if @config['liberal']

messages = []

# Run the command for each file

applicable_files.each do |file|

result = execute(command, args: [file])

# flay exits non-zero both when it finds duplication (with output on

# stdout) and when it crashes internally. A crash leaves stdout empty

# and writes a backtrace to stderr, so treat that as an error instead

# of silently passing.

if !result.success? && result.stdout.strip.empty?

return :fail, result.stderr

end

results = result.stdout.split("\n\n")

results.shift

unless results.empty?

error_message = results.join("\n").gsub(/^\d+\)\s*/, '')

message = Overcommit::Hook::Message.new(:error, nil, nil, error_message)

messages << message

end

messages

end

Expand file tree