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https://github.com/python/cpython.git
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151 lines
3.4 KiB
Python
Executable file
151 lines
3.4 KiB
Python
Executable file
import os
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import sys
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import string
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from Tkinter import *
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from ScrolledText import ScrolledText
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from Dialog import Dialog
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import signal
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BUFSIZE = 512
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class ShellWindow(ScrolledText):
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def __init__(self, master=None, shell=None, **cnf):
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if not shell:
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try:
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shell = os.environ['SHELL']
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except KeyError:
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shell = '/bin/sh'
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shell = shell + ' -i'
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args = string.split(shell)
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shell = args[0]
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apply(ScrolledText.__init__, (self, master), cnf)
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self.pos = '1.0'
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self.bind('<Return>', self.inputhandler)
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self.bind('<Control-c>', self.sigint)
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self.bind('<Control-t>', self.sigterm)
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self.bind('<Control-k>', self.sigkill)
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self.bind('<Control-d>', self.sendeof)
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self.pid, self.fromchild, self.tochild = spawn(shell, args)
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self.tk.createfilehandler(self.fromchild, READABLE,
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self.outputhandler)
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def outputhandler(self, file, mask):
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data = os.read(file, BUFSIZE)
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if not data:
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self.tk.deletefilehandler(file)
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pid, sts = os.waitpid(self.pid, 0)
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print 'pid', pid, 'status', sts
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self.pid = None
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detail = sts>>8
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cause = sts & 0xff
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if cause == 0:
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msg = "exit status %d" % detail
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else:
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msg = "killed by signal %d" % (cause & 0x7f)
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if cause & 0x80:
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msg = msg + " -- core dumped"
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Dialog(self.master,
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text=msg,
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title="Exit status",
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bitmap='warning',
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default=0,
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strings=('OK',))
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return
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self.insert(END, data)
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self.pos = self.index("end - 1 char")
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self.yview_pickplace(END)
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def inputhandler(self, *args):
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if not self.pid:
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self.no_process()
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return "break"
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self.insert(END, "\n")
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line = self.get(self.pos, "end - 1 char")
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self.pos = self.index(END)
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os.write(self.tochild, line)
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return "break"
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def sendeof(self, *args):
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if not self.pid:
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self.no_process()
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return "break"
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os.close(self.tochild)
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return "break"
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def sendsig(self, sig):
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if not self.pid:
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self.no_process()
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return "break"
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os.kill(self.pid, sig)
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return "break"
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def sigint(self, *args):
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return self.sendsig(signal.SIGINT)
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def sigquit(self, *args):
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return self.sendsig(signal.SIGQUIT)
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def sigterm(self, *args):
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return self.sendsig(signal.SIGTERM)
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def sigkill(self, *args):
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return self.sendsig(signal.SIGKILL)
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def no_process(self):
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Dialog(self.master,
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text="No active process",
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title="No process",
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bitmap='error',
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default=0,
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strings=('OK',))
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MAXFD = 100 # Max number of file descriptors (os.getdtablesize()???)
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def spawn(prog, args):
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p2cread, p2cwrite = os.pipe()
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c2pread, c2pwrite = os.pipe()
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pid = os.fork()
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if pid == 0:
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# Child
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for i in 0, 1, 2:
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try:
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os.close(i)
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except os.error:
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pass
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if os.dup(p2cread) <> 0:
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sys.stderr.write('popen2: bad read dup\n')
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if os.dup(c2pwrite) <> 1:
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sys.stderr.write('popen2: bad write dup\n')
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if os.dup(c2pwrite) <> 2:
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sys.stderr.write('popen2: bad write dup\n')
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for i in range(3, MAXFD):
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try:
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os.close(i)
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except:
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pass
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try:
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os.execvp(prog, args)
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finally:
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sys.stderr.write('execvp failed\n')
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os._exit(1)
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os.close(p2cread)
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os.close(c2pwrite)
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return pid, c2pread, p2cwrite
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def test():
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shell = string.join(sys.argv[1:])
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root = Tk()
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root.minsize(1, 1)
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if shell:
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w = ShellWindow(root, shell=shell)
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else:
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w = ShellWindow(root)
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w.pack(expand=1, fill=BOTH)
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w.focus_set()
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w.tk.mainloop()
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if __name__ == '__main__':
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test()
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