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author | Guido van Rossum <guido@python.org> | 1998-03-26 21:13:24 (GMT) |
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committer | Guido van Rossum <guido@python.org> | 1998-03-26 21:13:24 (GMT) |
commit | 45e2fbc2e70ef28b1f0327207f33dab3a4e825c5 (patch) | |
tree | 24cafdb6ffb07170188292a02440935291327cde /Lib/popen2.py | |
parent | 9ea7024754f0e42d7fc70fd1c8f6f6cfbf7e1cf0 (diff) | |
download | cpython-45e2fbc2e70ef28b1f0327207f33dab3a4e825c5.zip cpython-45e2fbc2e70ef28b1f0327207f33dab3a4e825c5.tar.gz cpython-45e2fbc2e70ef28b1f0327207f33dab3a4e825c5.tar.bz2 |
Mass check-in after untabifying all files that need it.
Diffstat (limited to 'Lib/popen2.py')
-rw-r--r-- | Lib/popen2.py | 110 |
1 files changed, 55 insertions, 55 deletions
diff --git a/Lib/popen2.py b/Lib/popen2.py index d62f6a9..4c42958 100644 --- a/Lib/popen2.py +++ b/Lib/popen2.py @@ -2,71 +2,71 @@ import os import sys import string -MAXFD = 256 # Max number of file descriptors (os.getdtablesize()???) +MAXFD = 256 # Max number of file descriptors (os.getdtablesize()???) _active = [] def _cleanup(): for inst in _active[:]: - inst.poll() + inst.poll() class Popen3: def __init__(self, cmd, capturestderr=0, bufsize=-1): - if type(cmd) == type(''): - cmd = ['/bin/sh', '-c', cmd] - p2cread, p2cwrite = os.pipe() - c2pread, c2pwrite = os.pipe() - if capturestderr: - errout, errin = os.pipe() - self.pid = os.fork() - if self.pid == 0: - # Child - os.close(0) - os.close(1) - if os.dup(p2cread) <> 0: - sys.stderr.write('popen2: bad read dup\n') - if os.dup(c2pwrite) <> 1: - sys.stderr.write('popen2: bad write dup\n') - if capturestderr: - os.close(2) - if os.dup(errin) <> 2: pass - for i in range(3, MAXFD): - try: - os.close(i) - except: pass - try: - os.execvp(cmd[0], cmd) - finally: - os._exit(1) - # Shouldn't come here, I guess - os._exit(1) - os.close(p2cread) - self.tochild = os.fdopen(p2cwrite, 'w', bufsize) - os.close(c2pwrite) - self.fromchild = os.fdopen(c2pread, 'r', bufsize) - if capturestderr: - os.close(errin) - self.childerr = os.fdopen(errout, 'r', bufsize) - else: - self.childerr = None - self.sts = -1 # Child not completed yet - _active.append(self) + if type(cmd) == type(''): + cmd = ['/bin/sh', '-c', cmd] + p2cread, p2cwrite = os.pipe() + c2pread, c2pwrite = os.pipe() + if capturestderr: + errout, errin = os.pipe() + self.pid = os.fork() + if self.pid == 0: + # Child + os.close(0) + os.close(1) + if os.dup(p2cread) <> 0: + sys.stderr.write('popen2: bad read dup\n') + if os.dup(c2pwrite) <> 1: + sys.stderr.write('popen2: bad write dup\n') + if capturestderr: + os.close(2) + if os.dup(errin) <> 2: pass + for i in range(3, MAXFD): + try: + os.close(i) + except: pass + try: + os.execvp(cmd[0], cmd) + finally: + os._exit(1) + # Shouldn't come here, I guess + os._exit(1) + os.close(p2cread) + self.tochild = os.fdopen(p2cwrite, 'w', bufsize) + os.close(c2pwrite) + self.fromchild = os.fdopen(c2pread, 'r', bufsize) + if capturestderr: + os.close(errin) + self.childerr = os.fdopen(errout, 'r', bufsize) + else: + self.childerr = None + self.sts = -1 # Child not completed yet + _active.append(self) def poll(self): - if self.sts < 0: - try: - pid, sts = os.waitpid(self.pid, os.WNOHANG) - if pid == self.pid: - self.sts = sts - _active.remove(self) - except os.error: - pass - return self.sts + if self.sts < 0: + try: + pid, sts = os.waitpid(self.pid, os.WNOHANG) + if pid == self.pid: + self.sts = sts + _active.remove(self) + except os.error: + pass + return self.sts def wait(self): - pid, sts = os.waitpid(self.pid, 0) - if pid == self.pid: - self.sts = sts - _active.remove(self) - return self.sts + pid, sts = os.waitpid(self.pid, 0) + if pid == self.pid: + self.sts = sts + _active.remove(self) + return self.sts def popen2(cmd, bufsize=-1): _cleanup() |