1 # -*- coding: utf-8 -*-
4 Copyright (C) 2007, Karl Hasselström <kha@treskal.com>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License version 2 as
8 published by the Free Software Foundation.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 import datetime, os, subprocess
22 from stgit.out import *
24 class RunException(Exception):
25 """Thrown when something bad happened when we tried to run the
29 _all_log_modes = ['debug', 'profile']
30 _log_mode = os.environ.get('STGIT_SUBPROCESS_LOG', '')
31 if _log_mode and not _log_mode in _all_log_modes:
32 out.warn(('Unknown log mode "%s" specified in $STGIT_SUBPROCESS_LOG.'
34 'Valid values are: %s' % ', '.join(_all_log_modes))
38 def __init__(self, *cmd):
39 self.__cmd = list(cmd)
42 raise Exception, 'Bad command: %r' % cmd
43 self.__good_retvals = [0]
46 def __log_start(self):
47 if _log_mode == 'debug':
48 out.start('Running subprocess %s' % self.__cmd)
49 elif _log_mode == 'profile':
50 out.start('Running subprocess %s' % self.__cmd[0])
51 self.__starttime = datetime.datetime.now()
52 def __log_end(self, retcode):
53 if _log_mode == 'debug':
54 out.done('return code: %d' % retcode)
55 elif _log_mode == 'profile':
56 duration = datetime.datetime.now() - self.__starttime
57 out.done('%1.3f s' % (duration.microseconds/1e6 + duration.seconds))
58 def __check_exitcode(self):
59 if self.exitcode not in self.__good_retvals:
60 raise self.exc('%s failed with code %d'
61 % (self.__cmd[0], self.exitcode))
63 """Run with captured IO."""
66 p = subprocess.Popen(self.__cmd, env = self.__env,
67 stdin = subprocess.PIPE,
68 stdout = subprocess.PIPE)
69 outdata, errdata = p.communicate(self.__indata)
70 self.exitcode = p.returncode
72 raise self.exc('%s failed: %s' % (self.__cmd[0], e))
73 self.__log_end(self.exitcode)
74 self.__check_exitcode()
77 """Run without captured IO."""
78 assert self.__indata == None
81 p = subprocess.Popen(self.__cmd, env = self.__env)
82 self.exitcode = p.wait()
84 raise self.exc('%s failed: %s' % (self.__cmd[0], e))
85 self.__log_end(self.exitcode)
86 self.__check_exitcode()
87 def returns(self, retvals):
88 self.__good_retvals = retvals
91 self.__env = dict(os.environ)
92 self.__env.update(env)
94 def raw_input(self, indata):
95 self.__indata = indata
97 def input_lines(self, lines):
98 self.__indata = ''.join(['%s\n' % line for line in lines])
101 outdata = self.__run_io()
103 raise self.exc, '%s produced output' % self.__cmd[0]
104 def discard_output(self):
106 def raw_output(self):
107 return self.__run_io()
108 def output_lines(self):
109 outdata = self.__run_io()
110 if outdata.endswith('\n'):
111 outdata = outdata[:-1]
113 return outdata.split('\n')
116 def output_one_line(self):
117 outlines = self.output_lines()
118 if len(outlines) == 1:
121 raise self.exc('%s produced %d lines, expected 1'
122 % (self.__cmd[0], len(outlines)))
124 """Just run, with no IO redirection."""
126 def xargs(self, xargs):
127 """Just run, with no IO redirection. The extra arguments are
128 appended to the command line a few at a time; the command is
129 run as many times as needed to consume them all."""
132 for i in xrange(0, len(xargs), step):
133 self.__cmd = basecmd + xargs[i:i+step]