Class: Rscons::Builders::Copy

Inherits:
Rscons::Builder show all
Defined in:
lib/rscons/builders/copy.rb

Overview

The Copy builder copies files/directories to new locations.

Direct Known Subclasses

Install

Instance Attribute Summary

Attributes inherited from Rscons::Builder

#build_step, #cache, #env, #preferred_ld, #side_effects, #sources, #target, #vars

Instance Method Summary collapse

Methods inherited from Rscons::Builder

#depends, extra_path, #finalize_command, name, #name, #print_run_message, #produces, #register_command, #standard_command, #wait_for

Constructor Details

#initialize(*args) ⇒ Copy

Construct builder.



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# File 'lib/rscons/builders/copy.rb', line 9

def initialize(*args)
  super
  @install_builder = self.class.name == "Install"
end

Instance Method Details

#run(options) ⇒ Object

Run the builder to produce a build target.



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# File 'lib/rscons/builders/copy.rb', line 15

def run(options)
  target_is_dir = (@sources.length > 1) ||
                  Dir.exists?(@sources.first) ||
                  Dir.exists?(@target)
  outdir = target_is_dir ? @target : File.dirname(@target)
  # Collect the list of files to copy over.
  file_map = {}
  if target_is_dir
    @sources.each do |src|
      if Dir.exists? src
        Dir.glob("#{src}/**/*", File::FNM_DOTMATCH).select do |f|
          File.file?(f)
        end.each do |subfile|
          subpath = Pathname.new(subfile).relative_path_from(Pathname.new(src)).to_s
          file_map[subfile] = "#{outdir}/#{subpath}"
        end
      else
        file_map[src] = "#{outdir}/#{File.basename(src)}"
      end
    end
  else
    file_map[sources.first] = target
  end
  printed_message = false
  file_map.each do |src, dest|
    # Check the cache and copy if necessary
    unless @cache.up_to_date?(dest, :Copy, [src], @env)
      unless printed_message
        message = "#{name} <source>#{Util.short_format_paths(@sources)}<reset> => <target>#{@target}<reset>"
        print_run_message(message, nil)
        printed_message = true
      end
      @cache.mkdir_p(File.dirname(dest), install: @install_builder)
      FileUtils.rm_f(dest)
      FileUtils.cp(src, dest, :preserve => true)
    end
    @cache.register_build(dest, :Copy, [src], @env, install: @install_builder)
  end
  (target_is_dir ? Dir.exists?(@target) : File.exists?(@target)) ? true : false
end