129 lines
4.0 KiB
Python
129 lines
4.0 KiB
Python
import fcntl, os, select, pty, threading
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from buffer import Buffer, ACT_NORM, ACT_NONE
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from term import XTerm
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from point import Point
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# evil evil evil evil evil
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class XTermBuffer(Buffer, XTerm):
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btype = 'term'
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modename = 'pipe'
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termtype = 'xterm'
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#termtype = 'vt100'
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def __init__(self, app, cmd, args, name=None):
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XTerm.__init__(self)
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Buffer.__init__(self)
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self.application = app
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self._name = name or '*XTerm*'
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self._pid, self._pty = pty.fork()
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if self._pid == 0:
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# child process
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os.execve(cmd, [cmd] + args, {'TERM': self.termtype})
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self._lock = threading.Lock()
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self._towrite = ''
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self._done = False
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self._set_nonblock(self._pty)
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self._thread = threading.Thread(target=self.pipe_read)
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self._thread.setDaemon(True)
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self._thread.start()
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def _w(self):
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return self.windows[0]
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def _get_height(self):
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return self._w().height
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def _get_width(self):
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return self._w().width
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# TERM STUFF
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def _term_insert(self, s):
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w = self._w()
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p = w.logical_cursor()
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if p.x == len(self.lines[p.y]):
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w.buffer.insert_string(p, s, act=ACT_NONE, force=True)
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else:
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w.buffer.overwrite_char(p, s, act=ACT_NONE, force=True)
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def term_do_clear(self):
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self.set_lines([''], force=True)
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self._meta = []
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def term_do_backspace(self):
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self._w().backward()
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def term_do_tab(self):
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self._term_insert(' ')
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def term_do_newline(self):
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w = self._w()
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p = w.logical_cursor()
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if p.y < len(self.lines) - 1:
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w.start_of_line()
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w.next_line()
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else:
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w.end_of_line()
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w.buffer.insert_string(w.logical_cursor(), "\n", act=ACT_NONE, force=True)
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def term_do_creturn(self):
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self._w().start_of_line()
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def term_do_delete(self):
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self._w().delete_right()
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def term_handle_print(self, c):
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#self._term_insert('%d ' % ord(c))
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self._term_insert(c)
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def term_handle_ctl(self, c):
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n = ord(c)
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if n == 8:
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self.term_do_backspace()
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elif n == 9:
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self.term_do_tab()
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elif n == 10:
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self.term_do_newline()
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elif n == 13:
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self.term_do_creturn()
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elif n == 27:
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self.term_do_esc(c)
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elif n == 127:
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self.term_do_delete()
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else:
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self._term_insert('%x' % n)
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def term_receive(self, s):
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for c in s:
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self.term_handle(c)
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# BUFFER STUFF
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def _set_nonblock(self, fd):
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flags = fcntl.fcntl(fd, fcntl.F_GETFL)
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fcntl.fcntl(fd, fcntl.F_SETFL, flags | os.O_NDELAY)
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def pipe_read(self):
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fd = self._pty
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try:
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while not self._done:
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if self._towrite:
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ifd, ofd, efd = select.select([fd], [fd], [fd], 0.1)
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else:
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ifd, ofd, efd = select.select([fd], [], [fd], 0.1)
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if ifd:
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data = os.read(ifd[0], 1024)
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self.term_receive(data)
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self.application.need_draw = True
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if ofd:
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self._lock.acquire()
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n = os.write(ofd[0], self._towrite)
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self._towrite = self._towrite[n:]
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self._lock.release()
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if efd:
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raise Exception, "exception is ready: %s" % repr(efd)
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except (OSError, TypeError):
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pass
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os.close(fd)
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def pipe_write(self, s):
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self._lock.acquire()
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self._towrite += s
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self._lock.release()
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def name(self): return self._name
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def changed(self): return False
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def readonly(self): return True
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def undo(self, move, act): raise Exception, "invalid"
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def redo(self, move, act): raise Exception, "invalid"
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def reload(self): raise Exception, "invalid"
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