add a draft of python script to validate all markdown URLs

Scripts/validate_markdown_links.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+
+from socket import timeout
+
+import os
+import sys
+import codecs
+import re
+
+import markdown
+
+from urllib.request import urlopen
+from urllib.error import HTTPError
+from urllib.error import URLError
+
+def check_live_url(url):
+
+    result = False
+    try:
+        ret = urlopen(url, timeout=2)
+        result = (ret.code == 200)
+    except HTTPError as e:
+        print(e, file=sys.stderr)
+    except URLError as e:
+        print(e, file=sys.stderr)
+    except timeout as e:
+        print(e, file=sys.stderr)
+    except Exception as e:
+        print(e, file=sys.stderr)
+
+    return result
+
+
+def main(path):
+
+    filenames = []
+    for (dirpath, dnames, fnames) in os.walk(path):
+        for fname in fnames:
+            if fname.endswith('.md'):
+                filenames.append(os.sep.join([dirpath, fname]))
+
+    urls = []
+
+    for filename in filenames:
+        fd = codecs.open(filename, mode="r", encoding="utf-8")
+        for line in fd.readlines():
+            refs = re.findall(r'(?<=<a href=")[^"]*', markdown.markdown(line))
+            for ref in refs:
+                if ref not in urls:
+                    urls.append(ref)
+        fd.close()
+
+    for url in urls:
+        if not url.startswith("http"):
+            print("markdown file name: " + url)
+            continue
+        if check_live_url(url):
+            print(url)
+        else:
+            print(url, file=sys.stderr)
+
+
+if __name__ == '__main__':
+
+    if len(sys.argv) == 2:
+        main(sys.argv[1])
+    else:
+        print("Choose one path as argument one")