Add gitbook documentation (support PDF generation).

To generate PDF doc:
 ./gendocs.sh pdf

To generate HTML doc (local webserver):
 ./gendocs.sh serve

Change-Id: I77156a45e86f3bcab045cee05694f93b7a50e4ba
Signed-off-by: Sebastien Douheret <sebastien.douheret@iot.bzh>

4 files changed, 120 insertions, 0 deletions

diff --git a/docs/_layouts/ebook/page.html b/docs/_layouts/ebook/page.html
new file mode 100644
index 00000000..bf325e9b
--- /dev/null
+++ b/docs/_layouts/ebook/page.html
@@ -0,0 +1,36 @@
+{% extends "layout.html" %}
+
+{% block title %}{{ page.title }}{% endblock %}
+{% block description %}{{ page.description }}{% endblock %}
+
+{% block style %}
+    {### Include theme css before plugins css ###}
+    {% if not fileExists(config.styles.print) %}
+        {% if options.format %}
+        <link rel="stylesheet" href="{{ (options.format + ".css")|resolveAsset }}">
+        {% else %}
+        <link rel="stylesheet" href="{{ "ebook.css"|resolveAsset }}">
+        {% endif %}
+    {% endif %}
+
+    {{ super() }}
+
+    {### Custom stylesheets for the book ###}
+
+    {% for type, style in config.styles %}
+        {% if fileExists(style) and (type == "ebook" or type == "print" or type == options.format) %}
+        <link rel="stylesheet" href="{{ style|resolveFile }}">
+        {% endif %}
+    {% endfor %}
+{% endblock %}
+
+{% block body %}
+<div class="page">
+    {% block page %}
+        <h1 class="book-chapter book-chapter-{{ page.depth }}">{{ page.title }}</h1>
+        <div class="section">
+            {{ page.content|safe }}
+        </div>
+    {% endblock %}
+</div>
+{% endblock %}
diff --git a/docs/_layouts/ebook/pdf_footer.html b/docs/_layouts/ebook/pdf_footer.html
new file mode 100644
index 00000000..679e5628
--- /dev/null
+++ b/docs/_layouts/ebook/pdf_footer.html
@@ -0,0 +1,13 @@
+{% extends "./page.html" %}
+{% block body %}
+<div id="pdf-footer" class="pdf-footer">
+    <span class="footer-left">Version {{ config.version }}</span>
+    <span class="footer-right">{{ page.num }}</span>
+    <span class="footer-center">{{ config.published }}</span>
+</div>
+
+<!-- Allow to hide footer for some pages using hidepagefooters config in book.json -->
+<script>
+    if (({% for num in config.hidepagefooters %}{{ page.num }} == {{ num }} || {% endfor %}false)) document.getElementById('pdf-footer').style.display = 'none'
+</script>
+{% endblock %}
diff --git a/docs/_layouts/ebook/pdf_header.html b/docs/_layouts/ebook/pdf_header.html
new file mode 100644
index 00000000..ef496410
--- /dev/null
+++ b/docs/_layouts/ebook/pdf_header.html
@@ -0,0 +1,13 @@
+{% extends "./page.html" %}
+{% block body %}
+<div id="pdf-header" class="pdf-header">
+    <span class="header-left">IoT.Bzh</span>
+    <span class="header-right">{{ config.title }}</span>
+</div>
+
+<!-- Allow to hide header for some pages using hidepageheaders config in book.json -->
+<script>
+    if (({% for num in config.hidepageheaders %}{{ page.num }} == {{ num }} || {% endfor %}false)) document.getElementById('pdf-header').style.display = 'none'
+</script>
+
+{% endblock %}
\ No newline at end of file
diff --git a/docs/_layouts/ebook/summary.html b/docs/_layouts/ebook/summary.html
new file mode 100644
index 00000000..be328a42
--- /dev/null
+++ b/docs/_layouts/ebook/summary.html
@@ -0,0 +1,58 @@
+{% extends "./page.html" %}
+
+{% block title %}{{ "SUMMARY"|t }}{% endblock %}
+
+{% macro articles(_articles) %}
+    {% for article in _articles %}
+        <li>
+            <span class="inner">
+                {% if article.path or article.url %}
+                    {% if article.path %}
+                        <a href="{{ article.path|contentURL }}{{ article.anchor }}">{{ article.title }}</a>
+                    {% else %}
+                        <a target="_blank" href="{{ article.url }}">{{ article.title }}</a>
+                    {% endif %}
+                {% else %}
+                    <span>{{ article.title }}</span>
+                {% endif %}
+                {% if 1 %}
+                <span class="page">{{ article.level }}</span>
+                {% endif %}
+            </span>
+            {% if article.articles.length > 0 %}
+            <ol>
+                {{ articles(article.articles) }}
+            </ol>
+            {% endif %}
+        </li>
+    {% endfor %}
+{% endmacro %}
+
+{% block page %}
+<div class="section toc">
+    <h1>{{ "SUMMARY"|t }}</h1>
+    <ol>
+        {% for part in summary.parts %}
+            {% if part.title %}
+            <li class="part-title">
+                <h2>{{ part.title }}</h2>
+            </li>
+            {% endif %}
+            {{ articles(part.articles) }}
+
+            {% if not loop.last %}
+            <li class="divider"></li>
+            {% endif %}
+        {% endfor %}
+
+        {% if glossary.path %}
+        <li>
+            <span class="inner">
+                <a href="{{ ('/' + glossary.path)|contentURL }}">{{ "GLOSSARY"|t }}</a>
+            </span>
+        </li>
+        {% endif %}
+    </ol>
+</div>
+{% endblock %}
+