Make it possible to switch progress bar

pytchat/cli/progressbar_simple.py

@@ -0,0 +1,49 @@
+'''
+This code for this progress bar is based on
+vladignatyev/progress.py
+https://gist.github.com/vladignatyev/06860ec2040cb497f0f3
+(MIT License)
+'''
+import sys
+
+
+class ProgressBar:
+    def __init__(self, total, status):
+        self._bar_len = 60
+        self._cancelled = False
+        print(''.join([' ' * 10, '|', '-' * (self._bar_len), '|']), end="")
+        self.reset(total=total, status=status)
+
+    def reset(self, symbol_done="=", symbol_space=" ", total=100, status=''):
+        self._symbol_done = symbol_done
+        self._symbol_space = symbol_space
+        self._total = total
+        self._status = status
+        self._old_len = 0
+        self._count = 0
+        print()
+        print(f'{status:<11}', end='')
+
+    def _disp(self, _, fetched):
+        self._progress(fetched, self._total)
+
+    def _progress(self, fillin, total):
+        if total == 0 or self._cancelled:
+            return
+        self._count += fillin
+        filled_len = int(round(self._bar_len * self._count / float(total)))
+        if filled_len > self._bar_len:
+            filled_len = self._bar_len
+        print((filled_len - self._old_len) * self._symbol_done, end="")
+        sys.stdout.flush()
+        self._old_len = filled_len
+
+    def close(self):
+        if not self._cancelled:
+            self._progress(self._total, self._total)
+
+    def cancel(self):
+        self._cancelled = True
+    
+    def is_cancelled(self):
+        return self._cancelled