68 lines
1.8 KiB
Ruby
68 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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# This is a script to run a command in ARGV, expanding tabs in some files
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# included by vm.c to normalize indentation of MJIT header. You can enable
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# this feature by passing `--without-mjit-tabs` in configure.
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#
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# Note that preprocessor of GCC converts a hard tab to one spaces, where
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# we expect it to be shown as 8 spaces. To obviate this script, we need
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# to convert all tabs to spaces in these files.
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require 'fileutils'
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EXPAND_TARGETS = %w[
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vm*.*
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include/ruby/ruby.h
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]
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# These files have no hard tab indentations. Skip normalizing these files from the glob result.
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SKIPPED_FILES = %w[
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vm_callinfo.h
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vm_debug.h
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vm_exec.h
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vm_opts.h
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vm_sync.h
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vm_sync.c
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]
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srcdir = File.expand_path('..', __dir__)
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targets = EXPAND_TARGETS.flat_map { |t| Dir.glob(File.join(srcdir, t)) } - SKIPPED_FILES.map { |f| File.join(srcdir, f) }
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sources = {}
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mtimes = {}
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mjit_tabs, *command = ARGV
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targets.each do |target|
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next if mjit_tabs != 'false'
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unless File.writable?(target)
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puts "tool/mjit_tabs.rb: Skipping #{target.dump} as it's not writable."
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next
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end
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source = File.read(target)
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begin
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expanded = source.gsub(/^\t+/) { |tab| ' ' * 8 * tab.length }
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rescue ArgumentError # invalid byte sequence in UTF-8 (Travis, RubyCI)
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puts "tool/mjit_tabs.rb: Skipping #{target.dump} as the encoding is #{source.encoding}."
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next
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end
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sources[target] = source
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mtimes[target] = File.mtime(target)
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if sources[target] == expanded
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puts "#{target.dump} has no hard tab indentation. This should be ignored in tool/mjit_tabs.rb."
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end
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File.write(target, expanded)
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FileUtils.touch(target, mtime: mtimes[target])
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end
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result = system(*command)
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targets.each do |target|
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if sources.key?(target)
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File.write(target, sources[target])
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FileUtils.touch(target, mtime: mtimes.fetch(target))
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end
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end
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exit result
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