makerhelper.rb in review-4.2.0

- old
+ new

@@ -1,6 +1,6 @@
-# Copyright (c) 2012-2018 Yuto HAYAMIZU, Kenshi Muto
+# Copyright (c) 2012-2020 Yuto HAYAMIZU, Kenshi Muto
 #
 # This program is free software.
 # You can distribute or modify this program under the terms of
 # the GNU LGPL, Lesser General Public License version 2.1.
 # For details of the GNU LGPL, see the file "COPYING".
@@ -110,10 +110,26 @@
 \\fontsize{#{fontsize}}{#{lineheight}}\\selectfont
 \\input{__IMGMATH_BODY__}
 \\end{document}
 EOB
 
+      hashes = File.readlines(File.join(math_dir, '__IMGMATH_BODY__.map')).sort.uniq
+      File.write(File.join(math_dir, '__IMGMATH_BODY__.map'), hashes.join)
+
+      File.open(File.join(math_dir, '__IMGMATH_BODY__.tex'), 'w') do |f|
+        File.open(File.join(math_dir, '__IMGMATH_BODY__.map')) do |map|
+          map.each_line do |l|
+            l.chomp!
+            f.puts "% #{l}"
+            f.puts File.read(File.join(math_dir, "__IMGMATH_BODY__#{l}.tex"))
+            File.unlink(File.join(math_dir, "__IMGMATH_BODY__#{l}.tex"))
+            f.puts '\\clearpage'
+            f.puts
+          end
+        end
+      end
+
       math_dir = File.realpath(math_dir)
       Dir.mktmpdir do |tmpdir|
         FileUtils.cp([File.join(math_dir, '__IMGMATH_BODY__.tex'),
                       File.join(math_dir, '__IMGMATH_BODY__.map')],
                      tmpdir)
@@ -137,9 +153,10 @@
         end
       end
       FileUtils.rm_f([File.join(math_dir, '__IMGMATH_BODY__.tex'),
                       File.join(math_dir, '__IMGMATH_BODY__.map')])
     end
+    module_function :make_math_images
 
     def make_math_images_pdfcrop(dir, tex_path, math_dir)
       # rubocop:disable Metrics/BlockLength
       Dir.chdir(dir) do
         dvi_path = '__IMGMATH__.dvi'