From f903d1d52a42267524aa96614f87d7ea148644e0 Mon Sep 17 00:00:00 2001
From: Kenshi Muto <kmuto@debian.org>
Date: Wed, 27 Oct 2021 15:53:56 +0900
Subject: [PATCH] find plantuml from system folder also

---
 doc/format.ja.md      |  2 +-
 doc/format.md         |  2 +-
 lib/review/builder.rb | 12 +++++++++++-
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/doc/format.ja.md b/doc/format.ja.md
index e228c433f..ba2db61f2 100644
--- a/doc/format.ja.md
+++ b/doc/format.ja.md
@@ -396,7 +396,7 @@ plot sin(x)
 * Gnuplot ( http://www.gnuplot.info/ ) : `gnuplot` コマンドへのパスを OS に設定すること
 * Blockdiag ( http://blockdiag.com/ ) : `blockdiag` コマンドへのパスを OS に設定すること。PDF を生成する場合は ReportLab もインストールすること
 * aafigure ( https://launchpad.net/aafigure ) : `aafigure` コマンドへのパスを OS に設定すること
-* PlantUML ( http://plantuml.com/ ) : `java` コマンドへのパスを OS に設定し、`plantuml.jar` が作業フォルダにあること
+* PlantUML ( http://plantuml.com/ ) : `java` コマンドへのパスを OS に設定し、`plantuml.jar` が作業フォルダ、または `/usr/share/plantuml` あるいは `/usr/share/java` フォルダにあること
 
 ## 表
 
diff --git a/doc/format.md b/doc/format.md
index 816460e30..eeda444c8 100644
--- a/doc/format.md
+++ b/doc/format.md
@@ -423,7 +423,7 @@ Before using these tools, you should installed them and configured path appropri
 * Gnuplot ( http://www.gnuplot.info/ ) : set path to `gnuplot` command
 * Blockdiag ( http://blockdiag.com/ ) : set path to `blockdiag` command. Install ReportLab also to make a PDF
 * aafigure ( https://launchpad.net/aafigure ) : set path to `aafigure` command
-* PlantUML ( http://plantuml.com/ ) : set path to `java` command. place `plantuml.jar` on working folder
+* PlantUML ( http://plantuml.com/ ) : set path to `java` command. place `plantuml.jar` on working folder, `/usr/share/plantuml` or `/usr/share/java`.
 
 ## Tables
 
diff --git a/lib/review/builder.rb b/lib/review/builder.rb
index 8aec855ff..69f7bea3b 100644
--- a/lib/review/builder.rb
+++ b/lib/review/builder.rb
@@ -669,7 +669,17 @@ def graph_plantuml(id, file_path, _line, tf_path)
         ext = 'eps'
         file_path.sub!(/\.pdf\Z/, '.eps')
       end
-      system_graph(id, 'java', '-jar', 'plantuml.jar', "-t#{ext}", '-charset', 'UTF-8', tf_path)
+      plant_path = nil
+      if File.exist?('plantuml.jar')
+        plant_path = 'plantuml.jar'
+      elsif File.exist?('/usr/share/plantuml/plantuml.jar')
+        plant_path = '/usr/share/plantuml/plantuml.jar'
+      elsif File.exist?('/usr/share/java/plantuml.jar')
+        plant_path = '/usr/share/java/plantuml.jar'
+      else
+        error!('missing plantuml.jar. Please put plantuml.jar at the working folder.')
+      end
+      system_graph(id, 'java', '-jar', plant_path, "-t#{ext}", '-charset', 'UTF-8', tf_path)
       FileUtils.mv("#{tf_path}.#{ext}", file_path)
       file_path
     end