pygbag support

.gitignore

@@ -8,3 +8,7 @@ docsrc/_build
 docsrc/reference/generated
 
 examples/_old
+
+*-pygbag.???
+/build
+/dist

main.py

@@ -0,0 +1,40 @@
+import wcwidth
+import termios
+import tty
+import numpy
+import cv2
+import nurses_2
+os.chdir("examples/basic")
+
+# BASIC
+
+# OK
+# buttons color_picker io_events.py line_plot.py menu.py
+# optical_illusion.py progress_bar.py scroll_view.py slider.py
+# subscription.py
+
+# NOT
+# animations file_chooser easings image parallax.py split_layout.py
+# tile.py video_in_terminal.py windows.py shadow_casting.py
+# sliding_puzzle.py
+
+os.chdir("../advanced")
+
+# OK
+# digital_clock.py doom_fire.py exploding_logo.py game_of_life.py
+# isotiles.py navier_stokes.py pong.py reaction_diffusion.py
+
+# NOT
+# exploding_logo_redux.py
+
+#?
+# labyrinth.py snake.py
+
+for test in "tetris sph sandbox rubiks raycaster minesweeper connect4 cloth".split(' '):
+    if test in sys.argv:
+        sys.path.append(test)
+        exec(f"from {test} import __main__", globals(), globals())
+        break
+
+# NOT
+# tetris

nurses_2/app.py

@@ -137,16 +137,24 @@ def run(self):
         Run the app.
         """
         try:
-            with redirect_stderr(StringIO()) as defer_stderr:
-                asyncio.run(self._run_async())
-        except asyncio.CancelledError:
-            pass
-        finally:
-            if self.log_file:
-                with open(self.log_file, "w") as log:
-                    print(defer_stderr.getvalue(), file=log, end="")
+            if sys.platform in ('emscripten','wasi'):
+                pass
             else:
-                print(defer_stderr.getvalue(), file=sys.stderr, end="")
+                asyncio.get_running_loop()
+            return asyncio.create_task(self._run_async())
+        except RuntimeError:
+            # we will run app directly
+            try:
+                with redirect_stderr(StringIO()) as defer_stderr:
+                    asyncio.run(self._run_async())
+            except asyncio.CancelledError:
+                pass
+            finally:
+                if self.log_file:
+                    with open(self.log_file, "w") as log:
+                        print(defer_stderr.getvalue(), file=log, end="")
+                else:
+                  print(defer_stderr.getvalue(), file=sys.stderr, end="")
 
     def exit(self):
         """

nurses_2/io/input/vt100/console_input.py

@@ -22,6 +22,7 @@ def read_stdin():
     """
     Read (non-blocking) from stdin and return it decoded.
     """
+
     if not select.select(*SELECT_ARGS)[0]:
         return ""
 
@@ -30,6 +31,12 @@ def read_stdin():
     except OSError:
         return ""
 
+if sys.platform in ('emscripten','wasi'):
+    import embed
+    embed.warn("@@@ 36: read_stdin override")
+    def read_stdin():
+        return DECODER.decode(embed.os_read())
+
 def _create_mouse_event(data):
     """
     Create a MouseEvent from ansi escapes.
@@ -105,11 +112,15 @@ def events():
     """
     Yield input events.
     """
-    data = "".join(iter(read_stdin, ""))
+    #embed.warn("@@@@ 115 Yield input events.")
+    if sys.platform in ('emscripten','wasi'):
+        data = DECODER.decode(embed.os_read())
+    else:
+        data = "".join(iter(read_stdin, ""))
 
     while data:
         data = _find_longest_match(data)
 
     yield from _EVENTS
 
-    _EVENTS.clear()
+    _EVENTS.clear()

nurses_2/io/input/vt100/vt100_input.py

@@ -30,6 +30,10 @@ def attach(callback):
     Context manager that makes this input active in the current event loop.
     """
     _EVENTS.clear()
+    try:
+        embed.warn(f"@@@ 34 : TODO SIGWINCH {callback=}")
+    except:
+        pass
 
     stdin = sys.stdin.fileno()
 
@@ -52,6 +56,7 @@ def on_resize(signum, stack):
 
 @contextmanager
 def raw_mode():
+    import tty
     stdin = sys.stdin.fileno()
     attrs_before = termios.tcgetattr(stdin)