Add github link to website sidebar

book/.gitignore

@@ -1,2 +1,3 @@
 /build
 /mdbook
+/node_modules

book/build.js

@@ -0,0 +1,37 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const cheerio = require('cheerio');
+
+const githublink = `\
+<li class="part-title">\
+<a href="https://github.com/dtolnay/cxx">\
+<i class="fa fa-github" style="font-size:20px;padding-right:5px;padding-top:12px;position:relative;top:1px"></i>\
+https://github.com/dtolnay/cxx\
+</a>\
+</li>`;
+
+const dirs = ['build'];
+while (dirs.length) {
+  const dir = dirs.pop();
+  fs.readdirSync(dir).forEach((entry) => {
+    path = dir + '/' + entry;
+    const stat = fs.statSync(path);
+    if (stat.isDirectory()) {
+      dirs.push(path);
+      return;
+    }
+
+    if (!path.endsWith('.html')) {
+      return;
+    }
+
+    const index = fs.readFileSync(path, 'utf8');
+    const $ = cheerio.load(index, { decodeEntities: false });
+
+    $('nav#sidebar ol.chapter').append(githublink);
+
+    const out = $.html();
+    fs.writeFileSync(path, out);
+  });
+}

book/build.sh

@@ -9,3 +9,9 @@ if [ -f ./mdbook ]; then
 else
     mdbook build
 fi
+
+if [ ! -d node_modules ]; then
+    npm install
+fi
+
+./build.js

book/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "cxx-book-build",
+  "version": "0.0.0",
+  "main": "build.js",
+  "dependencies": {
+    "cheerio": "^1.0.0-rc.3"
+  },
+  "prettier": {
+    "singleQuote": true
+  }
+}