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-rw-r--r--lib/python2.7/pty.py180
1 files changed, 0 insertions, 180 deletions
diff --git a/lib/python2.7/pty.py b/lib/python2.7/pty.py
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index 05ff686..0000000
--- a/lib/python2.7/pty.py
+++ /dev/null
@@ -1,180 +0,0 @@
-"""Pseudo terminal utilities."""
-
-# Bugs: No signal handling. Doesn't set slave termios and window size.
-# Only tested on Linux.
-# See: W. Richard Stevens. 1992. Advanced Programming in the
-# UNIX Environment. Chapter 19.
-# Author: Steen Lumholt -- with additions by Guido.
-
-from select import select
-import os
-import tty
-
-__all__ = ["openpty","fork","spawn"]
-
-STDIN_FILENO = 0
-STDOUT_FILENO = 1
-STDERR_FILENO = 2
-
-CHILD = 0
-
-def openpty():
- """openpty() -> (master_fd, slave_fd)
- Open a pty master/slave pair, using os.openpty() if possible."""
-
- try:
- return os.openpty()
- except (AttributeError, OSError):
- pass
- master_fd, slave_name = _open_terminal()
- slave_fd = slave_open(slave_name)
- return master_fd, slave_fd
-
-def master_open():
- """master_open() -> (master_fd, slave_name)
- Open a pty master and return the fd, and the filename of the slave end.
- Deprecated, use openpty() instead."""
-
- try:
- master_fd, slave_fd = os.openpty()
- except (AttributeError, OSError):
- pass
- else:
- slave_name = os.ttyname(slave_fd)
- os.close(slave_fd)
- return master_fd, slave_name
-
- return _open_terminal()
-
-def _open_terminal():
- """Open pty master and return (master_fd, tty_name).
- SGI and generic BSD version, for when openpty() fails."""
- try:
- import sgi
- except ImportError:
- pass
- else:
- try:
- tty_name, master_fd = sgi._getpty(os.O_RDWR, 0666, 0)
- except IOError, msg:
- raise os.error, msg
- return master_fd, tty_name
- for x in 'pqrstuvwxyzPQRST':
- for y in '0123456789abcdef':
- pty_name = '/dev/pty' + x + y
- try:
- fd = os.open(pty_name, os.O_RDWR)
- except os.error:
- continue
- return (fd, '/dev/tty' + x + y)
- raise os.error, 'out of pty devices'
-
-def slave_open(tty_name):
- """slave_open(tty_name) -> slave_fd
- Open the pty slave and acquire the controlling terminal, returning
- opened filedescriptor.
- Deprecated, use openpty() instead."""
-
- result = os.open(tty_name, os.O_RDWR)
- try:
- from fcntl import ioctl, I_PUSH
- except ImportError:
- return result
- try:
- ioctl(result, I_PUSH, "ptem")
- ioctl(result, I_PUSH, "ldterm")
- except IOError:
- pass
- return result
-
-def fork():
- """fork() -> (pid, master_fd)
- Fork and make the child a session leader with a controlling terminal."""
-
- try:
- pid, fd = os.forkpty()
- except (AttributeError, OSError):
- pass
- else:
- if pid == CHILD:
- try:
- os.setsid()
- except OSError:
- # os.forkpty() already set us session leader
- pass
- return pid, fd
-
- master_fd, slave_fd = openpty()
- pid = os.fork()
- if pid == CHILD:
- # Establish a new session.
- os.setsid()
- os.close(master_fd)
-
- # Slave becomes stdin/stdout/stderr of child.
- os.dup2(slave_fd, STDIN_FILENO)
- os.dup2(slave_fd, STDOUT_FILENO)
- os.dup2(slave_fd, STDERR_FILENO)
- if (slave_fd > STDERR_FILENO):
- os.close (slave_fd)
-
- # Explicitly open the tty to make it become a controlling tty.
- tmp_fd = os.open(os.ttyname(STDOUT_FILENO), os.O_RDWR)
- os.close(tmp_fd)
- else:
- os.close(slave_fd)
-
- # Parent and child process.
- return pid, master_fd
-
-def _writen(fd, data):
- """Write all the data to a descriptor."""
- while data != '':
- n = os.write(fd, data)
- data = data[n:]
-
-def _read(fd):
- """Default read function."""
- return os.read(fd, 1024)
-
-def _copy(master_fd, master_read=_read, stdin_read=_read):
- """Parent copy loop.
- Copies
- pty master -> standard output (master_read)
- standard input -> pty master (stdin_read)"""
- fds = [master_fd, STDIN_FILENO]
- while True:
- rfds, wfds, xfds = select(fds, [], [])
- if master_fd in rfds:
- data = master_read(master_fd)
- if not data: # Reached EOF.
- fds.remove(master_fd)
- else:
- os.write(STDOUT_FILENO, data)
- if STDIN_FILENO in rfds:
- data = stdin_read(STDIN_FILENO)
- if not data:
- fds.remove(STDIN_FILENO)
- else:
- _writen(master_fd, data)
-
-def spawn(argv, master_read=_read, stdin_read=_read):
- """Create a spawned process."""
- if type(argv) == type(''):
- argv = (argv,)
- pid, master_fd = fork()
- if pid == CHILD:
- os.execlp(argv[0], *argv)
- try:
- mode = tty.tcgetattr(STDIN_FILENO)
- tty.setraw(STDIN_FILENO)
- restore = 1
- except tty.error: # This is the same as termios.error
- restore = 0
- try:
- _copy(master_fd, master_read, stdin_read)
- except (IOError, OSError):
- if restore:
- tty.tcsetattr(STDIN_FILENO, tty.TCSAFLUSH, mode)
-
- os.close(master_fd)