2 # vim: ai ts=4 sts=4 et sw=4
4 # Copyright (c) 2009, 2010, 2011 Intel, Inc.
6 # This program is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by the Free
8 # Software Foundation; version 2 of the License
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 # You should have received a copy of the GNU General Public License along
16 # with this program; if not, write to the Free Software Foundation, Inc., 59
17 # Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 __ALL__ = ['set_mode',
38 INFO_COLOR = 32 # green
39 WARN_COLOR = 33 # yellow
44 HOST_TIMEZONE = time.timezone
46 PREFIX_RE = re.compile('^<(.*?)>\s*(.*)', re.S)
61 CATCHERR_BUFFILE_FD = -1
62 CATCHERR_BUFFILE_PATH = None
65 def _general_print(head, color, msg = None, stream = None, level = 'normal'):
70 if LOG_LEVELS[level] > LOG_LEVEL:
74 # encode raw 'unicode' str to utf8 encoded str
75 if msg and isinstance(msg, unicode):
76 msg = msg.encode('utf-8', 'ignore')
79 if CATCHERR_BUFFILE_FD > 0:
80 size = os.lseek(CATCHERR_BUFFILE_FD , 0, os.SEEK_END)
81 os.lseek(CATCHERR_BUFFILE_FD, 0, os.SEEK_SET)
82 errormsg = os.read(CATCHERR_BUFFILE_FD, size)
83 os.ftruncate(CATCHERR_BUFFILE_FD, 0)
87 LOG_CONTENT += errormsg
89 save_msg = msg.strip() if msg else None
92 timestr = time.strftime("[%m/%d %H:%M:%S] ",
93 time.gmtime(time.time() - HOST_TIMEZONE))
94 LOG_CONTENT += timestr + save_msg + '\n'
97 _color_print('', NO_COLOR, errormsg, stream, level)
99 _color_print(head, color, msg, stream, level)
101 def _color_print(head, color, msg, stream, level):
103 if color == NO_COLOR or \
104 not stream.isatty() or \
105 os.getenv('ANSI_COLORS_DISABLED') is not None:
108 if head.startswith('\r'):
109 # need not \n at last
115 head = '\033[%dm%s:\033[0m ' %(color, head)
117 # ESC cmd to clear line
118 head = '\033[2K' + head
122 if head.startswith('\r'):
127 if isinstance(msg, unicode):
128 msg = msg.encode('utf8', 'ignore')
130 stream.write('%s%s' % (head, msg))
136 def _color_perror(head, color, msg, level = 'normal'):
137 if CATCHERR_BUFFILE_FD > 0:
138 _general_print(head, color, msg, sys.stdout, level)
140 _general_print(head, color, msg, sys.stderr, level)
142 def _split_msg(head, msg):
143 if isinstance(msg, list):
144 msg = '\n'.join(map(str, msg))
146 if msg.startswith('\n'):
147 # means print \n at first
151 elif msg.startswith('\r'):
152 # means print \r at first
156 m = PREFIX_RE.match(msg)
158 head += ' <%s>' % m.group(1)
164 return (k for k,v in LOG_LEVELS.items() if v==LOG_LEVEL).next()
166 def set_loglevel(level):
168 if level not in LOG_LEVELS:
172 LOG_LEVEL = LOG_LEVELS[level]
174 def set_interactive(mode=True):
182 _general_print('', NO_COLOR, msg)
185 head, msg = _split_msg('Info', msg)
186 _general_print(head, INFO_COLOR, msg)
189 head, msg = _split_msg('Verbose', msg)
190 _general_print(head, INFO_COLOR, msg, level = 'verbose')
193 head, msg = _split_msg('Warning', msg)
194 _color_perror(head, WARN_COLOR, msg)
197 head, msg = _split_msg('Debug', msg)
198 _color_perror(head, ERR_COLOR, msg, level = 'debug')
201 head, msg = _split_msg('Error', msg)
202 _color_perror(head, ERR_COLOR, msg)
205 def ask(msg, default=True):
206 _general_print('\rQ', ASK_COLOR, '')
214 repl = raw_input(msg)
215 if repl.lower() == 'y':
217 elif repl.lower() == 'n':
219 elif not repl.strip():
229 _general_print('', NO_COLOR, msg)
232 except KeyboardInterrupt:
233 sys.stdout.write('\n')
238 _general_print('\rQ', ASK_COLOR, '')
240 msg = 'press <ENTER> to continue ...'
243 def set_logfile(fpath):
248 if not os.path.exists(os.path.dirname(LOG_FILE_FP)):
249 os.makedirs(os.path.dirname(LOG_FILE_FP))
250 fp = open(LOG_FILE_FP, 'w')
251 fp.write(LOG_CONTENT)
254 if LOG_FILE_FP is not None:
255 warning('duplicate log file configuration')
257 LOG_FILE_FP = os.path.abspath(os.path.expanduser(fpath))
260 atexit.register(_savelogf)
262 def enable_logstderr(fpath):
263 global CATCHERR_BUFFILE_FD
264 global CATCHERR_BUFFILE_PATH
265 global CATCHERR_SAVED_2
267 if os.path.exists(fpath):
269 CATCHERR_BUFFILE_PATH = fpath
270 CATCHERR_BUFFILE_FD = os.open(CATCHERR_BUFFILE_PATH, os.O_RDWR|os.O_CREAT)
271 CATCHERR_SAVED_2 = os.dup(2)
272 os.dup2(CATCHERR_BUFFILE_FD, 2)
274 def disable_logstderr():
275 global CATCHERR_BUFFILE_FD
276 global CATCHERR_BUFFILE_PATH
277 global CATCHERR_SAVED_2
279 raw(msg = None) # flush message buffer and print it.
280 os.dup2(CATCHERR_SAVED_2, 2)
281 os.close(CATCHERR_SAVED_2)
282 os.close(CATCHERR_BUFFILE_FD)
283 os.unlink(CATCHERR_BUFFILE_PATH)
284 CATCHERR_BUFFILE_FD = -1
285 CATCHERR_BUFFILE_PATH = None
286 CATCHERR_SAVED_2 = -1