blog/content/post/2011/01/24/2011-01-24-00001452.md

---
title: ditaa を Emacs から使えるようにしてみた
author: kazu634
date: 2011-01-24
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categories:
  - Emacs

---
<div class="section">
<p>
    とりあえずこんな感じで関数を定義してみた。リージョンを選択した状態で使います:
</p>

<pre class="syntax-highlight">
<span class="synComment">;; /*       _\|/_</span>
<span class="synComment">;;          (o o)</span>
<span class="synComment">;;  +----oOO-{_}-OOo--------------+</span>
<span class="synComment">;;  |Making a diagram, using ditaa|</span>
<span class="synComment">;;  +----------------------------*/</span>
<span class="synComment">;; ----------------------------------------------------</span>
<span class="synComment">;; Process of generating the diagram</span>
<span class="synComment">;;     +------------------+     +-----------------+</span>
<span class="synComment">;;     |{io}              |     |{d}              |</span>
<span class="synComment">;;     |cYEL              |     |cRED             |</span>
<span class="synComment">;;     |Disgram pattern   |     |Generated Diagram|</span>
<span class="synComment">;;     |in an Emacs buffer|     +-----------------+</span>
<span class="synComment">;;     +------------------+           ^</span>
<span class="synComment">;;              |                     |</span>
<span class="synComment">;;              |                     |</span>
<span class="synComment">;;              V                     |</span>
<span class="synComment">;;     +----------------+       +-------------+</span>
<span class="synComment">;;     |{s}             |       |             |</span>
<span class="synComment">;;     |cGRE            |       |cBLU         |</span>
<span class="synComment">;;     |Diagram pattern |------&#62;|Execute ditaa|</span>
<span class="synComment">;;     |as a file       |       |             |</span>
<span class="synComment">;;     +----------------+       +-------------+</span>
<span class="synComment">;; ----------------------------------------------------</span>
<span class="synSpecial">(</span><span class="synStatement">defun</span> make-diagram <span class="synSpecial">(</span>beg end<span class="synSpecial">)</span>
<span class="synSpecial">(</span>interactive <span class="synConstant">&#34;r&#34;</span><span class="synSpecial">)</span>
<span class="synSpecial">(</span><span class="synStatement">let</span> <span class="synSpecial">((</span>temp-file <span class="synSpecial">(</span>make-temp-file <span class="synConstant">&#34;diagram&#34;</span><span class="synSpecial">))</span>
<span class="synSpecial">(</span>cur-buf <span class="synSpecial">(</span>current-buffer<span class="synSpecial">))</span>
<span class="synSpecial">(</span>temp-diagram-png
<span class="synSpecial">(</span>concat
<span class="synSpecial">(</span>make-temp-name <span class="synConstant">&#34;/Volumes/MacHDD/kazu634/junk/image/&#34;</span><span class="synSpecial">)</span>
<span class="synConstant">&#34;.png&#34;</span><span class="synSpecial">)))</span>
<span class="synSpecial">(</span>copy-region-as-kill beg end<span class="synSpecial">)</span>
<span class="synSpecial">(</span>get-buffer-create <span class="synConstant">&#34;*diagram*&#34;</span><span class="synSpecial">)</span>
<span class="synSpecial">(</span>set-buffer <span class="synConstant">&#34;*diagram*&#34;</span><span class="synSpecial">)</span>
<span class="synSpecial">(</span>yank<span class="synSpecial">)</span>
<span class="synSpecial">(</span>write-file temp-file<span class="synSpecial">)</span>
<span class="synSpecial">(</span>set-buffer cur-buf<span class="synSpecial">)</span>
<span class="synSpecial">(</span>shell-command <span class="synSpecial">(</span><span class="synStatement">format</span> <span class="synConstant">&#34;java -jar /Volumes/MacHDD/kazu634/bin/ditaa0_9.jar -r %s %s&#34;</span> temp-file temp-diagram-png<span class="synSpecial">)</span>
<span class="synStatement">nil</span>
<span class="synStatement">nil</span><span class="synSpecial">)</span>
<span class="synSpecial">(</span>message <span class="synConstant">&#34;Successfully generate a diagram file.&#34;</span><span class="synSpecial">)</span>
<span class="synSpecial">(</span><span class="synStatement">delete-file</span> temp-file<span class="synSpecial">)</span>
<span class="synSpecial">(</span>insert temp-diagram-png<span class="synSpecial">)))</span>
</pre>

<h4>
    作成されるダイアグラム
</h4>

<p>
    これを画像にしてみます:
</p>

<pre>
----------------------------------------------------
Process of generating the diagram
+------------------+     +-----------------+
|{io}cYEL          |     |{d} cRED         |
|Disgram pattern   |     |Generated Diagram|
|in an Emacs buffer|     +-----------------+
+------------------+           ^
|                     |
|                     |
V                     |
+----------------+       +-------------+
|{s}             |       |             |
|Diagram pattern |------&#62;|Execute ditaa|
|as a file       |       |             |
|cGRE            |       |cBLU         |
+----------------+       +-------------+
----------------------------------------------------
</pre>

<p>
    生成される画像:
</p>

<p>
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</p>
</div>