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authorGuido van Rossum <guido@python.org>1998-03-26 21:13:24 (GMT)
committerGuido van Rossum <guido@python.org>1998-03-26 21:13:24 (GMT)
commit45e2fbc2e70ef28b1f0327207f33dab3a4e825c5 (patch)
tree24cafdb6ffb07170188292a02440935291327cde /Lib/popen2.py
parent9ea7024754f0e42d7fc70fd1c8f6f6cfbf7e1cf0 (diff)
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Mass check-in after untabifying all files that need it.
Diffstat (limited to 'Lib/popen2.py')
-rw-r--r--Lib/popen2.py110
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()