kevinw / sipext

sip/bakefile builder

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sipext / utils.py
100644 34 lines (24 sloc) 0.791 kb
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import os
import shlex
import subprocess
import sys
 
def run(args, checkret = True, expect_return_code = 0, env = None):
    '''
    Runs cmd.
 
    If the process returns 0, returns the contents of stdout.
    Otherwise, raises an exception showing the error code and stderr.
    '''
 
    if os.name == 'nt':
        if isinstance(args, basestring):
            args = shlex.split(args.replace('\\', '\\\\'))
 
    print '\n%s\n' % ' '.join(args)
 
    try:
        process = subprocess.Popen(args, env = env)
    except WindowsError:
        print >>sys.stderr, 'Error using Popen: args were %r' % args
        raise
 
    stdout, stderr = process.communicate()
    retcode = process.returncode
 
    if checkret and retcode != expect_return_code:
        sys.exit(retcode)
 
    return stdout