From 29fbc3bc2e6a1868c5e9b11190b0f78454d8ba6a Mon Sep 17 00:00:00 2001
From: Kevin Fischer <kfischer_okarin@yahoo.co.jp>
Date: Fri, 6 Oct 2023 19:28:01 +0900
Subject: [PATCH] Fix newline scrambling of single file libraries

---
 scripts/build-single-file-libs | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/scripts/build-single-file-libs b/scripts/build-single-file-libs
index 1d8bbf0..2343465 100755
--- a/scripts/build-single-file-libs
+++ b/scripts/build-single-file-libs
@@ -36,22 +36,22 @@ LIBS = {
   ]
 }.freeze
 
-NEWLINE = "\n"
+EMPTY_LINE = "\n"
 
 def main
   prepare_output_directory
   license_header_lines = comment_lines File.readlines('LICENSE')
-  license_header_lines << NEWLINE
+  license_header_lines << EMPTY_LINE
 
   LIBS.each do |lib_name, lib_files|
     result_lines = license_header_lines.dup
     lib_files.each do |lib_file|
       file_lines = File.readlines(LIB_DIR / lib_file)
       result_lines.concat strip_dragon_skeleton_module(file_lines)
-      result_lines << NEWLINE
+      result_lines << EMPTY_LINE
     end
 
-    File.write OUTPUT_DIR / "#{lib_name}.rb", result_lines.join.chomp
+    File.write OUTPUT_DIR / "#{lib_name}.rb", result_lines.join
   end
 end
 
@@ -61,7 +61,13 @@ def prepare_output_directory
 end
 
 def comment_lines(lines)
-  lines.map { |line| "# #{line}" }
+  lines.map { |line|
+    if line.strip.empty?
+      "#\n"
+    else
+      "# #{line}"
+    end
+  }
 end
 
 def strip_dragon_skeleton_module(file_lines)
@@ -70,7 +76,13 @@ def strip_dragon_skeleton_module(file_lines)
 end
 
 def unindent(lines)
-  lines.map { |line| line[2..] }
+  lines.map { |line|
+    if line.strip.empty?
+      EMPTY_LINE
+    else
+      line[2..]
+    end
+  }
 end
 
 main if $PROGRAM_NAME == __FILE__