see #6: pdf for english version

pdf/en-us/aggregator.py

@@ -0,0 +1,26 @@
+# !/usr/bin/env python3
+# author: changkun<hi@changkun.us>
+
+import os
+
+chapters = ['00-preface.md', '01-intro.md',  '02-usability.md', '03-runtime.md', '04-containers.md', '05-pointers.md', '06-regex.md', '07-thread.md', '08-filesystem.md', '09-others.md', '10-cpp20.md', 'appendix.md']
+
+ignores = ['TOC', 'Return to TOC', 'License', 'license']
+
+
+with open('modern-cpp-tutorial.md', 'w') as outfile:
+    outfile.write("""---
+title: "C++11/14/17 On the Fly"
+author: Changkun Ou <hi@changkun.us>
+copyright: cc-by-nc-nd 4.0
+---
+""")
+    for chapter in chapters:
+        if os.path.isfile(chapter):
+            with open(chapter) as ch:
+                outfile.write('\n')
+                for line in ch:
+                    if any(keyword in line for keyword in ignores):
+                        continue
+                    else:
+                        outfile.write(line)