Huge memory leak converting a file?

[ggrieco-tob]

If you workaround issue #1 commenting the code that raises exceptions every time asciicast2gif finds unsupported escape characters using this patch:

diff --git a/asciicast2gif/asciicast.py b/asciicast2gif/asciicast.py
index 5a1b3be..1c49f7a 100644
--- a/asciicast2gif/asciicast.py
+++ b/asciicast2gif/asciicast.py
@@ -263,7 +263,7 @@ class ANSITerminal(Screen):
         elif char in '\030\031':
             self._state = ANSITerminal.TerminalState.OUTSIDE
         else:
-            raise Exception("Escape sequence ESC \\x%x is not currently supported!" % ord(char))
+            print("Escape sequence ESC \\x%x is not currently supported!" % ord(char))
 
     def _write_escbkt(self, char):
         esc_value = to_int(self._esc, 1)
@@ -308,13 +308,13 @@ class ANSITerminal(Screen):
                 # we don't need to handle bracketed paste mode
                 pass
             else:
-                raise Exception("ESC[%sh escape is currently unsupported!" % self._esc)
+                print("ESC[%sh escape is currently unsupported!" % self._esc)
         elif char == 'l':
             if self._esc == '?2004':
                 # we don't need to handle bracketed paste mode
                 pass
             else:
-                raise Exception("ESC[%sl escape is currently unsupported!" % self._esc)
+                print("ESC[%sl escape is currently unsupported!" % self._esc)
         elif char == 'm':
             self._write_esc_m()
         elif char == 's':
@@ -323,7 +323,7 @@ class ANSITerminal(Screen):
             if self._stored_pos is not None:
                 self.move_to(*self._stored_pos)
         elif char in 'STfinhl':
-            raise Exception("ESC[%s%s escape is currently unsupported!" % (self._esc, char))
+            print("ESC[%s%s escape is currently unsupported!" % (self._esc, char))
         else:
             matched = False
         if matched:

then converting this asciinema cast file will trigger very large memory allocations that will force you to kill the program (or you will have to restart your computer!)