Add visual progress bar.

macli.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+import progress_meter
 import re
 import hashlib
 import os
@@ -65,7 +66,6 @@ def get_extension(path):
 
 
 def request(url):
-    print("> {}".format(url))
     req = urllib.request.Request(
         url,
         data=None,
@@ -80,7 +80,7 @@ def show_error(e):
     print("\x1b[41;37m{}\x1b[0m")
 
 
-def archive(content, base_url, selector, directory, attribute):
+def archive(content, base_url, selector, directory, attribute, progbar):
     os.makedirs(directory, exist_ok=True)
     for part in content.find_all(**selector):
         if attribute not in part.attrs:
@@ -88,6 +88,7 @@ def archive(content, base_url, selector, directory, attribute):
 
         href = urllib.parse.urljoin(base_url, part[attribute],
                                     allow_fragments=False)
+        progbar.next_iter(href)
 
         name = (hashlib.sha1(href.encode()).hexdigest()
                 + '.'
@@ -123,6 +124,18 @@ def relink_links(content, base_url):
         link['href'] = full_href
 
 
+def get_num_elements(content):
+    count = 0
+    for (selector, _, attribute) in OBJECT_TYPE_DESCRIPTORS:
+        count += len([True
+                      for element
+                      in content.find_all(**selector)
+                      if attribute in element.attrs])
+
+    return count
+
+
+
 def archive_to_dir(directory, url):
     current_path = os.getcwd()
     os.chdir(directory)
@@ -134,9 +147,11 @@ def archive_to_dir(directory, url):
     relink_links(archived_content, url)
 
     # Archive objects
+    progbar = progress_meter.ProgressBar(get_num_elements(archived_content))
+
     for (selector, directory, attribute) in OBJECT_TYPE_DESCRIPTORS:
         archive(archived_content, url,
-                selector, directory, attribute)
+                selector, directory, attribute, progbar)
 
     with open('index.html', 'wt') as f:
         f.write(str(archived_content))

progress_meter.py

@@ -0,0 +1,30 @@
+import sys
+
+class ProgressBar:
+    def __init__(self, num_elements):
+        self.num_elements = num_elements
+        self.current_element = 0
+
+    def show(self, msg=''):
+        total_blocks = 10
+        blocks_done = ((self.current_element * total_blocks)
+                       // self.num_elements)
+        blocks_to_go = total_blocks - blocks_done
+
+        print('\r'       # Go to the start of the line
+              '\x1b[K'   # Clear line
+              '\x1b[0m'  # Restart the "style"
+              '\x1b[7l'  # Disable line wrapping
+              '|'        # Put the first "|"
+              + blocks_done * '█'  # Completed blocks
+              + blocks_to_go * ' '  # Uncompleted blocks
+              + '\x1b[7m|\x1b[0m'   # End the bar
+              + ' '
+              + msg        # Add message
+              + '\x1b[7h'  # Enable line wrapping
+              + '\r',      # Go back to the start
+              end='')
+
+    def next_iter(self, msg=''):
+        self.current_element += 1
+        self.show(msg)