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 PREFIX_RE = re.compile('^<(.*?)>\s*(.*)', re.S)
59 CATCHERR_BUFFILE_FD = -1
60 CATCHERR_BUFFILE_PATH = None
63 def _general_print(head, color, msg = None, stream = None, level = 'normal'):
68 if LOG_LEVELS[level] > LOG_LEVEL:
72 # encode raw 'unicode' str to utf8 encoded str
73 if msg and isinstance(msg, unicode):
74 msg = msg.encode('utf-8', 'ignore')
77 if CATCHERR_BUFFILE_FD > 0:
78 size = os.lseek(CATCHERR_BUFFILE_FD , 0, os.SEEK_END)
79 os.lseek(CATCHERR_BUFFILE_FD, 0, os.SEEK_SET)
80 errormsg = os.read(CATCHERR_BUFFILE_FD, size)
81 os.ftruncate(CATCHERR_BUFFILE_FD, 0)
83 # append error msg to LOG
85 LOG_CONTENT += errormsg
87 # append normal msg to LOG
88 save_msg = msg.strip() if msg else None
90 timestr = time.strftime("[%m/%d %H:%M:%S] ", time.localtime())
91 LOG_CONTENT += timestr + save_msg + '\n'
94 _color_print('', NO_COLOR, errormsg, stream, level)
96 _color_print(head, color, msg, stream, level)
98 def _color_print(head, color, msg, stream, level):
100 if color == NO_COLOR or \
101 not stream.isatty() or \
102 os.getenv('ANSI_COLORS_DISABLED') is not None:
105 if head.startswith('\r'):
106 # need not \n at last
112 head = '\033[%dm%s:\033[0m ' %(color, head)
114 # ESC cmd to clear line
115 head = '\033[2K' + head
119 if head.startswith('\r'):
124 if isinstance(msg, unicode):
125 msg = msg.encode('utf8', 'ignore')
127 stream.write('%s%s' % (head, msg))
133 def _color_perror(head, color, msg, level = 'normal'):
134 if CATCHERR_BUFFILE_FD > 0:
135 _general_print(head, color, msg, sys.stdout, level)
137 _general_print(head, color, msg, sys.stderr, level)
139 def _split_msg(head, msg):
140 if isinstance(msg, list):
141 msg = '\n'.join(map(str, msg))
143 if msg.startswith('\n'):
144 # means print \n at first
148 elif msg.startswith('\r'):
149 # means print \r at first
153 m = PREFIX_RE.match(msg)
155 head += ' <%s>' % m.group(1)
161 return (k for k,v in LOG_LEVELS.items() if v==LOG_LEVEL).next()
163 def set_loglevel(level):
165 if level not in LOG_LEVELS:
169 LOG_LEVEL = LOG_LEVELS[level]
171 def set_interactive(mode=True):
179 # log msg to LOG_CONTENT then save to logfile
185 _general_print('', NO_COLOR, msg)
188 head, msg = _split_msg('Info', msg)
189 _general_print(head, INFO_COLOR, msg)
192 head, msg = _split_msg('Verbose', msg)
193 _general_print(head, INFO_COLOR, msg, level = 'verbose')
196 head, msg = _split_msg('Warning', msg)
197 _color_perror(head, WARN_COLOR, msg)
200 head, msg = _split_msg('Debug', msg)
201 _color_perror(head, ERR_COLOR, msg, level = 'debug')
204 head, msg = _split_msg('Error', msg)
205 _color_perror(head, ERR_COLOR, msg)
208 def ask(msg, default=True):
209 _general_print('\rQ', ASK_COLOR, '')
217 repl = raw_input(msg)
218 if repl.lower() == 'y':
220 elif repl.lower() == 'n':
222 elif not repl.strip():
232 _general_print('', NO_COLOR, msg)
235 except KeyboardInterrupt:
236 sys.stdout.write('\n')
239 def choice(msg, choices, default=0):
240 if default >= len(choices):
242 _general_print('\rQ', ASK_COLOR, '')
244 msg += " [%s] " % '/'.join(choices)
247 repl = raw_input(msg)
250 elif not repl.strip():
251 return choices[default]
253 msg += choices[default]
254 _general_print('', NO_COLOR, msg)
256 return choices[default]
257 except KeyboardInterrupt:
258 sys.stdout.write('\n')
263 _general_print('\rQ', ASK_COLOR, '')
265 msg = 'press <ENTER> to continue ...'
268 def set_logfile(fpath):
273 fp = open(LOG_FILE_FP, 'w')
274 fp.write(LOG_CONTENT)
277 if LOG_FILE_FP is not None:
278 warning('duplicate log file configuration')
283 atexit.register(_savelogf)
285 def enable_logstderr(fpath):
286 global CATCHERR_BUFFILE_FD
287 global CATCHERR_BUFFILE_PATH
288 global CATCHERR_SAVED_2
290 if os.path.exists(fpath):
292 CATCHERR_BUFFILE_PATH = fpath
293 CATCHERR_BUFFILE_FD = os.open(CATCHERR_BUFFILE_PATH, os.O_RDWR|os.O_CREAT)
294 CATCHERR_SAVED_2 = os.dup(2)
295 os.dup2(CATCHERR_BUFFILE_FD, 2)
297 def disable_logstderr():
298 global CATCHERR_BUFFILE_FD
299 global CATCHERR_BUFFILE_PATH
300 global CATCHERR_SAVED_2
302 raw(msg = None) # flush message buffer and print it.
303 os.dup2(CATCHERR_SAVED_2, 2)
304 os.close(CATCHERR_SAVED_2)
305 os.close(CATCHERR_BUFFILE_FD)
306 os.unlink(CATCHERR_BUFFILE_PATH)
307 CATCHERR_BUFFILE_FD = -1
308 CATCHERR_BUFFILE_PATH = None
309 CATCHERR_SAVED_2 = -1