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.exception import *
23 from stgit.out import *
25 class RunException(StgException):
26 """Thrown when something bad happened when we tried to run the
30 _all_log_modes = ['debug', 'profile']
31 _log_mode = os.environ.get('STGIT_SUBPROCESS_LOG', '')
32 if _log_mode and not _log_mode in _all_log_modes:
33 out.warn(('Unknown log mode "%s" specified in $STGIT_SUBPROCESS_LOG.'
35 'Valid values are: %s' % ', '.join(_all_log_modes))
39 def __init__(self, *cmd):
40 self.__cmd = list(cmd)
43 raise Exception, 'Bad command: %r' % (cmd,)
44 self.__good_retvals = [0]
45 self.__env = self.__cwd = None
47 self.__discard_stderr = False
48 def __log_start(self):
49 if _log_mode == 'debug':
50 out.start('Running subprocess %s' % self.__cmd)
51 if self.__cwd != None:
52 out.info('cwd: %s' % self.__cwd)
53 if self.__env != None:
54 for k in sorted(self.__env.iterkeys()):
55 if k not in os.environ or os.environ[k] != self.__env[k]:
56 out.info('%s: %s' % (k, self.__env[k]))
57 elif _log_mode == 'profile':
58 out.start('Running subprocess %s' % self.__cmd[0])
59 self.__starttime = datetime.datetime.now()
60 def __log_end(self, retcode):
61 if _log_mode == 'debug':
62 out.done('return code: %d' % retcode)
63 elif _log_mode == 'profile':
64 duration = datetime.datetime.now() - self.__starttime
65 out.done('%1.3f s' % (duration.microseconds/1e6 + duration.seconds))
66 def __check_exitcode(self):
67 if self.__good_retvals == None:
69 if self.exitcode not in self.__good_retvals:
70 raise self.exc('%s failed with code %d'
71 % (self.__cmd[0], self.exitcode))
73 """Run with captured IO."""
76 p = subprocess.Popen(self.__cmd, env = self.__env, cwd = self.__cwd,
77 stdin = subprocess.PIPE,
78 stdout = subprocess.PIPE,
79 stderr = subprocess.PIPE)
80 outdata, errdata = p.communicate(self.__indata)
81 self.exitcode = p.returncode
83 raise self.exc('%s failed: %s' % (self.__cmd[0], e))
84 if errdata and not self.__discard_stderr:
86 self.__log_end(self.exitcode)
87 self.__check_exitcode()
90 """Run without captured IO."""
91 assert self.__indata == None
94 p = subprocess.Popen(self.__cmd, env = self.__env, cwd = self.__cwd)
95 self.exitcode = p.wait()
97 raise self.exc('%s failed: %s' % (self.__cmd[0], e))
98 self.__log_end(self.exitcode)
99 self.__check_exitcode()
100 def returns(self, retvals):
101 self.__good_retvals = retvals
103 def discard_exitcode(self):
104 self.__good_retvals = None
106 def discard_stderr(self, discard = True):
107 self.__discard_stderr = discard
110 self.__env = dict(os.environ)
111 self.__env.update(env)
116 def raw_input(self, indata):
117 self.__indata = indata
119 def input_lines(self, lines):
120 self.__indata = ''.join(['%s\n' % line for line in lines])
122 def input_nulterm(self, lines):
123 self.__indata = ''.join('%s\0' % line for line in lines)
126 outdata = self.__run_io()
128 raise self.exc, '%s produced output' % self.__cmd[0]
129 def discard_output(self):
131 def raw_output(self):
132 return self.__run_io()
133 def output_lines(self):
134 outdata = self.__run_io()
135 if outdata.endswith('\n'):
136 outdata = outdata[:-1]
138 return outdata.split('\n')
141 def output_one_line(self):
142 outlines = self.output_lines()
143 if len(outlines) == 1:
146 raise self.exc('%s produced %d lines, expected 1'
147 % (self.__cmd[0], len(outlines)))
149 """Just run, with no IO redirection."""
151 def xargs(self, xargs):
152 """Just run, with no IO redirection. The extra arguments are
153 appended to the command line a few at a time; the command is
154 run as many times as needed to consume them all."""
157 for i in xrange(0, len(xargs), step):
158 self.__cmd = basecmd + xargs[i:i+step]