Matthias Volk
8 years ago
4 changed files with 183 additions and 0 deletions
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1.travis.yml
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1travis/mtime_cache/globs.txt
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178travis/mtime_cache/mtime_cache.rb
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3travis/postsubmit-helper.sh
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src/**/*.{%{cpp}} |
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#!/usr/bin/env ruby |
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# |
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# mtime_cache |
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# Copyright (c) 2016 Borislav Stanimirov |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a copy |
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# of this software and associated documentation files (the "Software"), to |
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# deal in the Software without restriction, including without limitation the |
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
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# sell copies of the Software, and to permit persons to whom the Software is |
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# furnished to do so, subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be included in |
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# all copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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# IN THE SOFTWARE. |
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# |
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require 'digest/md5' |
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require 'json' |
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require 'fileutils' |
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VERSION = "1.0.2" |
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VERSION_TEXT = "mtime_cache v#{VERSION}" |
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USAGE = <<ENDUSAGE |
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Usage: |
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mtime_cache [<globs>] [-g globfile] [-d] [-q|V] [-c cache] |
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ENDUSAGE |
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HELP = <<ENDHELP |
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Traverse through globbed files, making a json cache based on their mtime. |
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If a cache exists, changes the mtime of existing unchanged (based on MD5 |
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hash) files to the one in the cache. |
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Options: |
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globs Ruby-compatible glob strings (ex some/path/**/*.java) |
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A extension pattern is allowd in the form %{pattern} |
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(ex some/path/*.{%{pattern1},%{pattern2}}) |
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The globs support the following patterns: |
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%{cpp} - common C++ extensions |
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-g, --globfile A file with list of globs to perform (one per line) |
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-?, -h, --help Show this help message. |
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-v, --version Show the version number (#{VERSION}) |
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-q, --quiet Don't log anything to stdout |
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-V, --verbose Show extra logging |
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-d, --dryrun Don't change any files on the filesystem |
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-c, --cache Specify the cache file for input and output. |
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[Default is .mtime_cache.json] |
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ENDHELP |
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param_arg = nil |
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ARGS = { :cache => '.mtime_cache.json', :globs => [] } |
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ARGV.each do |arg| |
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case arg |
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when '-g', '--globfile' then param_arg = :globfile |
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when '-h', '-?', '--help' then ARGS[:help] = true |
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when '-v', '--version' then ARGS[:ver] = true |
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when '-q', '--quiet' then ARGS[:quiet] = true |
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when '-V', '--verbose' then ARGS[:verbose] = true |
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when '-d', '--dryrun' then ARGS[:dry] = true |
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when '-c', '--cache' then param_arg = :cache |
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else |
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if param_arg |
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ARGS[param_arg] = arg |
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param_arg = nil |
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else |
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ARGS[:globs] << arg |
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end |
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end |
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end |
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def log(text, level = 0) |
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return if ARGS[:quiet] |
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return if level > 0 && !ARGS[:verbose] |
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puts text |
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end |
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if ARGS[:ver] || ARGS[:help] |
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log VERSION_TEXT |
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exit if ARGS[:ver] |
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log USAGE |
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log HELP |
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exit |
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end |
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if ARGS[:globs].empty? && !ARGS[:globfile] |
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log 'Error: Missing globs' |
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log USAGE |
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exit 1 |
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end |
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EXTENSION_PATTERNS = { |
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:cpp => "c,cc,cpp,cxx,h,hpp,hxx,inl,ipp,inc,ixx" |
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} |
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cache_file = ARGS[:cache] |
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cache = {} |
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if File.file?(cache_file) |
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log "Found #{cache_file}" |
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cache = JSON.parse(File.read(cache_file)) |
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log "Read #{cache.length} entries" |
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else |
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log "#{cache_file} not found. A new one will be created" |
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end |
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globs = ARGS[:globs].map { |g| g % EXTENSION_PATTERNS } |
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globfile = ARGS[:globfile] |
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if globfile |
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File.open(globfile, 'r').each_line do |line| |
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line.strip! |
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next if line.empty? |
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globs << line % EXTENSION_PATTERNS |
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end |
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end |
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if globs.empty? |
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log 'Error: No globs in globfile' |
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log USAGE |
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exit 1 |
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end |
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files = {} |
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num_changed = 0 |
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globs.each do |glob| |
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Dir[glob].each do |file| |
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next if !File.file?(file) |
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mtime = File.mtime(file).to_i |
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hash = Digest::MD5.hexdigest(File.read(file)) |
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cached = cache[file] |
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if cached && cached['hash'] == hash && cached['mtime'] < mtime |
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mtime = cached['mtime'] |
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log "mtime_cache: changing mtime of #{file} to #{mtime}", 1 |
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File.utime(File.atime(file), Time.at(mtime), file) if !ARGS[:dry] |
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num_changed += 1 |
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else |
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log "mtime_cache: NOT changing mtime of #{file}", 1 |
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end |
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files[file] = { 'mtime' => mtime, 'hash' => hash } |
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end |
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end |
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log "Changed mtime of #{num_changed} of #{files.length} files" |
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log "Writing #{cache_file}" |
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if !ARGS[:dry] |
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dirname = File.dirname(cache_file) |
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unless File.directory?(dirname) |
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FileUtils.mkdir_p(dirname) |
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end |
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File.open(cache_file, 'w').write(JSON.pretty_generate(files)) |
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end |
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