SickGear/lib/hachoir_core/log.py
2015-08-20 16:48:28 +01:00

144 lines
4.1 KiB
Python

import os, sys, time
import hachoir_core.config as config
from hachoir_core.i18n import _
class Log:
LOG_INFO = 0
LOG_WARN = 1
LOG_ERROR = 2
level_name = {
LOG_WARN: "[warn]",
LOG_ERROR: "[err!]",
LOG_INFO: "[info]"
}
def __init__(self):
self.__buffer = {}
self.__file = None
self.use_print = True
self.use_buffer = False
self.on_new_message = None # Prototype: def func(level, prefix, text, context)
def shutdown(self):
if self.__file:
self._writeIntoFile(_("Stop Hachoir"))
def setFilename(self, filename, append=True):
"""
Use a file to store all messages. The
UTF-8 encoding will be used. Write an informative
message if the file can't be created.
@param filename: C{L{string}}
"""
# Look if file already exists or not
filename = os.path.expanduser(filename)
filename = os.path.realpath(filename)
append = os.access(filename, os.F_OK)
# Create log file (or open it in append mode, if it already exists)
try:
import codecs
if append:
self.__file = codecs.open(filename, "a", "utf-8")
else:
self.__file = codecs.open(filename, "w", "utf-8")
self._writeIntoFile(_("Starting Hachoir"))
except IOError, err:
if err.errno == 2:
self.__file = None
self.info(_("[Log] setFilename(%s) fails: no such file") % filename)
else:
raise
def _writeIntoFile(self, message):
timestamp = time.strftime("%Y-%m-%d %H:%M:%S")
self.__file.write(u"%s - %s\n" % (timestamp, message))
self.__file.flush()
def newMessage(self, level, text, ctxt=None):
"""
Write a new message : append it in the buffer,
display it to the screen (if needed), and write
it in the log file (if needed).
@param level: Message level.
@type level: C{int}
@param text: Message content.
@type text: C{str}
@param ctxt: The caller instance.
"""
if level < self.LOG_ERROR and config.quiet or \
level <= self.LOG_INFO and not config.verbose:
return
if config.debug:
from hachoir_core.error import getBacktrace
backtrace = getBacktrace(None)
if backtrace:
text += "\n\n" + backtrace
_text = text
if hasattr(ctxt, "_logger"):
_ctxt = ctxt._logger()
if _ctxt is not None:
text = "[%s] %s" % (_ctxt, text)
# Add message to log buffer
if self.use_buffer:
if not self.__buffer.has_key(level):
self.__buffer[level] = [text]
else:
self.__buffer[level].append(text)
# Add prefix
prefix = self.level_name.get(level, "[info]")
# Display on stdout (if used)
if self.use_print:
sys.stdout.flush()
sys.stderr.write("%s %s\n" % (prefix, text))
sys.stderr.flush()
# Write into outfile (if used)
if self.__file:
self._writeIntoFile("%s %s" % (prefix, text))
# Use callback (if used)
if self.on_new_message:
self.on_new_message (level, prefix, _text, ctxt)
def info(self, text):
"""
New informative message.
@type text: C{str}
"""
self.newMessage(Log.LOG_INFO, text)
def warning(self, text):
"""
New warning message.
@type text: C{str}
"""
self.newMessage(Log.LOG_WARN, text)
def error(self, text):
"""
New error message.
@type text: C{str}
"""
self.newMessage(Log.LOG_ERROR, text)
log = Log()
class Logger(object):
def _logger(self):
return "<%s>" % self.__class__.__name__
def info(self, text):
log.newMessage(Log.LOG_INFO, text, self)
def warning(self, text):
log.newMessage(Log.LOG_WARN, text, self)
def error(self, text):
log.newMessage(Log.LOG_ERROR, text, self)