--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/distutils/spawn.py Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,201 @@
+"""distutils.spawn
+
+Provides the 'spawn()' function, a front-end to various platform-
+specific functions for launching another program in a sub-process.
+Also provides the 'find_executable()' to search the path for a given
+executable name.
+"""
+
+# This module should be kept compatible with Python 2.1.
+
+__revision__ = "$Id: spawn.py 37828 2004-11-10 22:23:15Z loewis $"
+
+import sys, os, string
+from distutils.errors import *
+from distutils import log
+
+def spawn (cmd,
+ search_path=1,
+ verbose=0,
+ dry_run=0):
+
+ """Run another program, specified as a command list 'cmd', in a new
+ process. 'cmd' is just the argument list for the new process, ie.
+ cmd[0] is the program to run and cmd[1:] are the rest of its arguments.
+ There is no way to run a program with a name different from that of its
+ executable.
+
+ If 'search_path' is true (the default), the system's executable
+ search path will be used to find the program; otherwise, cmd[0]
+ must be the exact path to the executable. If 'dry_run' is true,
+ the command will not actually be run.
+
+ Raise DistutilsExecError if running the program fails in any way; just
+ return on success.
+ """
+ if os.name == 'posix':
+ _spawn_posix(cmd, search_path, dry_run=dry_run)
+ elif os.name == 'nt':
+ _spawn_nt(cmd, search_path, dry_run=dry_run)
+ elif os.name == 'os2':
+ _spawn_os2(cmd, search_path, dry_run=dry_run)
+ else:
+ raise DistutilsPlatformError, \
+ "don't know how to spawn programs on platform '%s'" % os.name
+
+# spawn ()
+
+
+def _nt_quote_args (args):
+ """Quote command-line arguments for DOS/Windows conventions: just
+ wraps every argument which contains blanks in double quotes, and
+ returns a new argument list.
+ """
+
+ # XXX this doesn't seem very robust to me -- but if the Windows guys
+ # say it'll work, I guess I'll have to accept it. (What if an arg
+ # contains quotes? What other magic characters, other than spaces,
+ # have to be escaped? Is there an escaping mechanism other than
+ # quoting?)
+
+ for i in range(len(args)):
+ if string.find(args[i], ' ') != -1:
+ args[i] = '"%s"' % args[i]
+ return args
+
+def _spawn_nt (cmd,
+ search_path=1,
+ verbose=0,
+ dry_run=0):
+
+ executable = cmd[0]
+ cmd = _nt_quote_args(cmd)
+ if search_path:
+ # either we find one or it stays the same
+ executable = find_executable(executable) or executable
+ log.info(string.join([executable] + cmd[1:], ' '))
+ if not dry_run:
+ # spawn for NT requires a full path to the .exe
+ try:
+ rc = os.spawnv(os.P_WAIT, executable, cmd)
+ except OSError, exc:
+ # this seems to happen when the command isn't found
+ raise DistutilsExecError, \
+ "command '%s' failed: %s" % (cmd[0], exc[-1])
+ if rc != 0:
+ # and this reflects the command running but failing
+ raise DistutilsExecError, \
+ "command '%s' failed with exit status %d" % (cmd[0], rc)
+
+
+def _spawn_os2 (cmd,
+ search_path=1,
+ verbose=0,
+ dry_run=0):
+
+ executable = cmd[0]
+ #cmd = _nt_quote_args(cmd)
+ if search_path:
+ # either we find one or it stays the same
+ executable = find_executable(executable) or executable
+ log.info(string.join([executable] + cmd[1:], ' '))
+ if not dry_run:
+ # spawnv for OS/2 EMX requires a full path to the .exe
+ try:
+ rc = os.spawnv(os.P_WAIT, executable, cmd)
+ except OSError, exc:
+ # this seems to happen when the command isn't found
+ raise DistutilsExecError, \
+ "command '%s' failed: %s" % (cmd[0], exc[-1])
+ if rc != 0:
+ # and this reflects the command running but failing
+ print "command '%s' failed with exit status %d" % (cmd[0], rc)
+ raise DistutilsExecError, \
+ "command '%s' failed with exit status %d" % (cmd[0], rc)
+
+
+def _spawn_posix (cmd,
+ search_path=1,
+ verbose=0,
+ dry_run=0):
+
+ log.info(string.join(cmd, ' '))
+ if dry_run:
+ return
+ exec_fn = search_path and os.execvp or os.execv
+
+ pid = os.fork()
+
+ if pid == 0: # in the child
+ try:
+ #print "cmd[0] =", cmd[0]
+ #print "cmd =", cmd
+ exec_fn(cmd[0], cmd)
+ except OSError, e:
+ sys.stderr.write("unable to execute %s: %s\n" %
+ (cmd[0], e.strerror))
+ os._exit(1)
+
+ sys.stderr.write("unable to execute %s for unknown reasons" % cmd[0])
+ os._exit(1)
+
+
+ else: # in the parent
+ # Loop until the child either exits or is terminated by a signal
+ # (ie. keep waiting if it's merely stopped)
+ while 1:
+ try:
+ (pid, status) = os.waitpid(pid, 0)
+ except OSError, exc:
+ import errno
+ if exc.errno == errno.EINTR:
+ continue
+ raise DistutilsExecError, \
+ "command '%s' failed: %s" % (cmd[0], exc[-1])
+ if os.WIFSIGNALED(status):
+ raise DistutilsExecError, \
+ "command '%s' terminated by signal %d" % \
+ (cmd[0], os.WTERMSIG(status))
+
+ elif os.WIFEXITED(status):
+ exit_status = os.WEXITSTATUS(status)
+ if exit_status == 0:
+ return # hey, it succeeded!
+ else:
+ raise DistutilsExecError, \
+ "command '%s' failed with exit status %d" % \
+ (cmd[0], exit_status)
+
+ elif os.WIFSTOPPED(status):
+ continue
+
+ else:
+ raise DistutilsExecError, \
+ "unknown error executing '%s': termination status %d" % \
+ (cmd[0], status)
+# _spawn_posix ()
+
+
+def find_executable(executable, path=None):
+ """Try to find 'executable' in the directories listed in 'path' (a
+ string listing directories separated by 'os.pathsep'; defaults to
+ os.environ['PATH']). Returns the complete filename or None if not
+ found.
+ """
+ if path is None:
+ path = os.environ['PATH']
+ paths = string.split(path, os.pathsep)
+ (base, ext) = os.path.splitext(executable)
+ if (sys.platform == 'win32' or os.name == 'os2') and (ext != '.exe'):
+ executable = executable + '.exe'
+ if not os.path.isfile(executable):
+ for p in paths:
+ f = os.path.join(p, executable)
+ if os.path.isfile(f):
+ # the file exists, we have a shot at spawn working
+ return f
+ return None
+ else:
+ return executable
+
+# find_executable()