##############################################################################
# 
# Zope Public License (ZPL) Version 1.0
# -------------------------------------
# 
# Copyright (c) Digital Creations.  All rights reserved.
# 
# This license has been certified as Open Source(tm).
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# 
# 1. Redistributions in source code must retain the above copyright
#    notice, this list of conditions, and the following disclaimer.
# 
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions, and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 
# 3. Digital Creations requests that attribution be given to Zope
#    in any manner possible. Zope includes a "Powered by Zope"
#    button that is installed by default. While it is not a license
#    violation to remove this button, it is requested that the
#    attribution remain. A significant investment has been put
#    into Zope, and this effort will continue if the Zope community
#    continues to grow. This is one way to assure that growth.
# 
# 4. All advertising materials and documentation mentioning
#    features derived from or use of this software must display
#    the following acknowledgement:
# 
#      "This product includes software developed by Digital Creations
#      for use in the Z Object Publishing Environment
#      (http://www.zope.org/)."
# 
#    In the event that the product being advertised includes an
#    intact Zope distribution (with copyright and license included)
#    then this clause is waived.
# 
# 5. Names associated with Zope or Digital Creations must not be used to
#    endorse or promote products derived from this software without
#    prior written permission from Digital Creations.
# 
# 6. Modified redistributions of any form whatsoever must retain
#    the following acknowledgment:
# 
#      "This product includes software developed by Digital Creations
#      for use in the Z Object Publishing Environment
#      (http://www.zope.org/)."
# 
#    Intact (re-)distributions of any official Zope release do not
#    require an external acknowledgement.
# 
# 7. Modifications are encouraged but must be packaged separately as
#    patches to official Zope releases.  Distributions that do not
#    clearly separate the patches from the original work must be clearly
#    labeled as unofficial distributions.  Modifications which do not
#    carry the name Zope may be packaged in any form, as long as they
#    conform to all of the clauses above.
# 
# 
# Disclaimer
# 
#   THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
#   EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
#   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
#   PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#   SUCH DAMAGE.
# 
# 
# This software consists of contributions made by Digital Creations and
# many individuals on behalf of Digital Creations.  Specific
# attributions are listed in the accompanying credits file.
# 
##############################################################################
import time, sys, string, os, thread

from zLOG import severity_string, log_time, format_exception

_stupid_dest=None
_stupid_severity=None
_stupid_format=None
_no_stupid_log=[]
format_exception_only=None

class stupidFileLogger:
    """ a stupid File Logger """

    def __call__(self, sub, sev, sum, det, err):
        stupid_log_write(sub, sev, sum, det, err)

def stupid_log_write(subsystem, severity, summary, detail, error):

    # Check where to log
    global _stupid_dest, _stupid_format
    if _stupid_dest is None:
        if os.environ.has_key('STUPID_LOG_FILE'):
            f=os.environ['STUPID_LOG_FILE']
            if f: _stupid_dest=open(f,'a')
            else: _stupid_dest=sys.stderr
        elif os.environ.get('Z_DEBUG_MODE',0):
            _stupid_dest=sys.stderr
        else:
            _stupid_dest=_no_stupid_log

        if os.environ.has_key('STUPID_LOG_FORMAT'):
            _stupid_format = os.environ['STUPID_LOG_FORMAT']


    # Check id to log
    if _stupid_dest is _no_stupid_log: return

    global _stupid_severity
    if _stupid_severity is None:
        try: _stupid_severity=string.atoi(os.environ['STUPID_LOG_SEVERITY'])
        except: _stupid_severity=0
        
    if severity < _stupid_severity: return

    if _stupid_format is not None:
        fmap = {'time': log_time(),
                'severity': severity_string(severity),
                'subsystem': subsystem,
                'summary': summary,
                'detail': detail,
                'thread': thread.get_ident()
                }
        try:
            s = _stupid_format % fmap
        except:
            failedf, _stupid_format = _stupid_format, None
            _stupid_dest.write("------\n%s %s zLOG Format string error\n"
                               "The STUPID_LOG_FORMAT string '%s' "
                               "caused an error, so we won't use it.\n" %
                               (fmap['time'],
                                severity_string(100),
                                failedf)
                               )
        else:
            _stupid_dest.write(s)
    if _stupid_format is None:
        _stupid_dest.write(
            "------\n"
            "%s %s %s %s\n%s"
            %
            (log_time(),
             severity_string(severity),
             subsystem,
             summary,
             detail,
             )
            )

    _stupid_dest.flush()

    if error:
        try:
            _stupid_dest.write(format_exception(
                error[0], error[1], error[2],
                trailer='\n', limit=100))
        except:
            _stupid_dest.write("%s: %s\n" % error[:2])
    _stupid_dest.flush()