Enable processing of directories other than pwd.

gemfeed.py

@@ -29,7 +29,7 @@ def extract_first_heading(filename, default=""):
                 return line.strip()
     return default
 
-def get_feed_title():
+def get_feed_title(directory):
     """
     If an index.gmi or index.gemini file exists and is worldreadable, return
     the content of the first heading line in the file, otherwise return a
@@ -37,18 +37,20 @@ def get_feed_title():
     """
     default = "Just another Gemini feed"
     for index_file in ("index.gmi", "index.gemini"):
+        index_file = os.path.join(directory, index_file)
         if os.path.exists(index_file) and is_world_readable(index_file):
             return extract_first_heading(index_file, default)
     return default
 
-def find_files(n=10):
+def find_files(directory, n=10):
     """
     Return the n most recently created world readable files with extensions of
     .gmi or .gemini, as a list sorted from most to least recent.
     """
     files = []
     for extension in ("gmi", "gemini"):
-        files.extend(glob.glob("*.{}".format(extension)))
+        glob_pattern = os.path.join(directory, "*.{}".format(extension))
+        files.extend(glob.glob(glob_pattern))
         index = "index.{}".format(extension)
         if index in files:
             files.remove(index)
@@ -87,18 +89,19 @@ def populate_entry_from_file(filename, base_url, entry):
     updated = os.path.getctime(filename)
     updated = datetime.datetime.fromtimestamp(updated, tz=datetime.timezone.utc)
     entry.updated(updated)
-    title = extract_first_heading(filename, filename)
+    default_title = os.path.splitext(os.path.basename(filename))[0]
+    title = extract_first_heading(filename, default_title)
     entry.title(title)
 
-def build_feed(base_url, output="atom.xml", n=10, title="", subtitle="",
-        author="", email="", verbose=False):
+def build_feed(directory, base_url, output="atom.xml", n=10, title="",
+        subtitle="", author="", email="", verbose=False):
     """
     Build an Atom feed for all world readable Gemini files in the current
     directory, and write it to atom.xml.
     """
     # If a title hasn't been provided, try to get one from an index page
     if not title:
-        title = get_feed_title()
+        title = get_feed_title(directory)
 
     # Setup feed
     feed = FeedGenerator()
@@ -117,7 +120,7 @@ def build_feed(base_url, output="atom.xml", n=10, title="", subtitle="",
     feed.link(href=urljoin(base_url, output), rel='self')
 
     # Add one entry per .gmi file
-    files = find_files(n)
+    files = find_files(directory, n)
     if not files:
         if verbose:
             print("No world-readable Gemini content found! :(")
@@ -128,9 +131,11 @@ def build_feed(base_url, output="atom.xml", n=10, title="", subtitle="",
         if n == 0:
             feed.updated(entry.updated())
         if verbose:
-            print("Adding {} with title '{}'...".format(filename, entry.title()))
+            print("Adding {} with title '{}'...".format(os.path.basename(filename),
+                entry.title()))
 
     # Write file
+    output = os.path.join(directory, output)
     feed.atom_file(output, pretty=True)
     if verbose:
         print("Wrote Atom feed to {}.".format(output))
@@ -140,12 +145,18 @@ def main():
     Parse command line arguments, do some minor processing, and then invoke
     the build_feed command with the provided settings.
     """
+
+    # Get cwd as default value for --directory
+    cwd = os.getcwd()
+
     # Parse arguments
     parser = argparse.ArgumentParser(description='Generate an Atom feed for Gemini content.')
     parser.add_argument('-a', '--author', dest='author', type=str,
             help="feed author's name")
     parser.add_argument('-b', '--base', dest='base_url', type=str,
             required=True, help='base URL for feed and entries')
+    parser.add_argument('-d', '--directory', dest='directory', type=str,
+            default=cwd, help='directory to find content and save feed to')
     parser.add_argument('-e', '--email', dest='email', type=str,
             help="feed author's email address")
     parser.add_argument('-n', dest='n', type=int, default=10,
@@ -169,8 +180,8 @@ def main():
     args.base_url = urllib.parse.urlunsplit(base_url)
 
     # Build the feed
-    build_feed(args.base_url, args.output, args.n, args.title, args.subtitle,
-            args.author, args.email, args.verbose)
+    build_feed(args.directory, args.base_url, args.output, args.n, args.title,
+            args.subtitle, args.author, args.email, args.verbose)
 
 if __name__ == "__main__":
     main()