mirror of
https://github.com/python/cpython.git
synced 2025-10-30 21:21:22 +00:00
69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
|
"""Minimal '_curses' module, the low-level interface for curses module
|
||
|
|
which is not meant to be used directly.
|
||
|
|
|
||
|
|
Based on ctypes. It's too incomplete to be really called '_curses', so
|
||
|
|
to use it, you have to import it and stick it in sys.modules['_curses']
|
||
|
|
manually.
|
||
|
|
|
||
|
|
Note that there is also a built-in module _minimal_curses which will
|
||
|
|
hide this one if compiled in.
|
||
|
|
"""
|
||
|
|
|
||
|
|
import ctypes
|
||
|
|
import ctypes.util
|
||
|
|
|
||
|
|
|
||
|
|
class error(Exception):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
def _find_clib():
|
||
|
|
trylibs = ["ncursesw", "ncurses", "curses"]
|
||
|
|
|
||
|
|
for lib in trylibs:
|
||
|
|
path = ctypes.util.find_library(lib)
|
||
|
|
if path:
|
||
|
|
return path
|
||
|
|
raise ModuleNotFoundError("curses library not found", name="_pyrepl._minimal_curses")
|
||
|
|
|
||
|
|
|
||
|
|
_clibpath = _find_clib()
|
||
|
|
clib = ctypes.cdll.LoadLibrary(_clibpath)
|
||
|
|
|
||
|
|
clib.setupterm.argtypes = [ctypes.c_char_p, ctypes.c_int, ctypes.POINTER(ctypes.c_int)]
|
||
|
|
clib.setupterm.restype = ctypes.c_int
|
||
|
|
|
||
|
|
clib.tigetstr.argtypes = [ctypes.c_char_p]
|
||
|
|
clib.tigetstr.restype = ctypes.POINTER(ctypes.c_char)
|
||
|
|
|
||
|
|
clib.tparm.argtypes = [ctypes.c_char_p] + 9 * [ctypes.c_int] # type: ignore[operator]
|
||
|
|
clib.tparm.restype = ctypes.c_char_p
|
||
|
|
|
||
|
|
OK = 0
|
||
|
|
ERR = -1
|
||
|
|
|
||
|
|
# ____________________________________________________________
|
||
|
|
|
||
|
|
|
||
|
|
def setupterm(termstr, fd):
|
||
|
|
err = ctypes.c_int(0)
|
||
|
|
result = clib.setupterm(termstr, fd, ctypes.byref(err))
|
||
|
|
if result == ERR:
|
||
|
|
raise error("setupterm() failed (err=%d)" % err.value)
|
||
|
|
|
||
|
|
|
||
|
|
def tigetstr(cap):
|
||
|
|
if not isinstance(cap, bytes):
|
||
|
|
cap = cap.encode("ascii")
|
||
|
|
result = clib.tigetstr(cap)
|
||
|
|
if ctypes.cast(result, ctypes.c_void_p).value == ERR:
|
||
|
|
return None
|
||
|
|
return ctypes.cast(result, ctypes.c_char_p).value
|
||
|
|
|
||
|
|
|
||
|
|
def tparm(str, i1=0, i2=0, i3=0, i4=0, i5=0, i6=0, i7=0, i8=0, i9=0):
|
||
|
|
result = clib.tparm(str, i1, i2, i3, i4, i5, i6, i7, i8, i9)
|
||
|
|
if result is None:
|
||
|
|
raise error("tparm() returned NULL")
|
||
|
|
return result
|