Coding Style.

- Move terminal.py from termstr package to fill3 package.
- Terminal was no longer used by termstr.
- Terminal could be in its own package in future.

termstr/terminal.py

@@ -1,92 +0,0 @@
-
-
-import contextlib
-import sys
-import termios
-
-
-ESC = "\x1b"
-MOUSE = ESC + "[M"
-
-UP_KEY = ESC + "[A"
-DOWN_KEY = ESC + "[B"
-RIGHT_KEY = ESC + "[C"
-LEFT_KEY = ESC + "[D"
-PAGE_UP_KEY = ESC + "[5~"
-PAGE_DOWN_KEY = ESC + "[6~"
-HOME_KEY = ESC + "[H"
-END_KEY = ESC + "[F"
-
-
-def move(x, y):
-    return ESC + f"[{y + 1:d};{x + 1:d}H"
-
-
-@contextlib.contextmanager
-def terminal_title(title):
-    sys.stdout.write(ESC + "7")  # save
-    sys.stdout.write(f"\033]0;{title}\007")  # set title
-    try:
-        yield
-    finally:
-        sys.stdout.write(ESC + "8")  # restore
-
-
-@contextlib.contextmanager
-def mouse_tracking():
-    sys.stdout.write(ESC + "[?1000h" + ESC + "[?1002h")  # tracking on
-    try:
-        yield
-    finally:
-        sys.stdout.write(ESC + "[?1002l" + ESC + "[?1000l")  # tracking off
-
-
-@contextlib.contextmanager
-def alternate_buffer():
-    sys.stdout.write(ESC + "[?1049h")  # switch to alternate buffer
-    try:
-        yield
-    finally:
-        sys.stdout.write(ESC + "[?1049l")  # restore normal buffer
-
-
-@contextlib.contextmanager
-def interactive():
-    old_termios_settings = termios.tcgetattr(sys.stdin)
-    new_settings = termios.tcgetattr(sys.stdin)
-    new_settings[3] = new_settings[3] & ~termios.ECHO & ~termios.ICANON
-    new_settings[6][termios.VMIN] = 0
-    termios.tcsetattr(sys.stdin, termios.TCSADRAIN, new_settings)
-    sys.stdout.write(ESC + "[?1l")  # Ensure normal cursor key codes
-    try:
-        yield
-    finally:
-        termios.tcsetattr(sys.stdin, termios.TCSADRAIN, old_termios_settings)
-
-
-RELEASE_MOUSE = 0
-DRAG_MOUSE = 1
-CLICK_MOUSE = 2
-PRESS_MOUSE = 3
-
-WHEEL_UP_MOUSE = 4
-WHEEL_DOWN_MOUSE = 5
-
-
-def decode_mouse_input(term_code):
-    keys = [ord(byte) for byte in term_code]
-    b = keys[0] - 32
-    x, y = (keys[1] - 33) % 256, (keys[2] - 33) % 256
-    button = ((b & 64) / 64 * 3) + (b & 3) + 1
-    if b & 3 == 3:
-        action = RELEASE_MOUSE
-        button = 0
-    elif b & 2048:
-        action = RELEASE_MOUSE
-    elif b & 32:
-        action = DRAG_MOUSE
-    elif b & 1536:
-        action = CLICK_MOUSE
-    else:
-        action = PRESS_MOUSE
-    return (action, button, x, y)