<reponame>cvrebert/TritonScraper
# Copyright (c) 2010 <NAME> <<EMAIL>>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

"""
This module contains general utility functions and shared constants used by other TritonScraper modules.

:copyright: (c) 2010 by <NAME>.
:license: MIT, see :file:`LICENSE.txt` for more details.
"""

from itertools import izip_longest as _izip_longest
from decimal import Decimal as _Decimal
from logging import getLogger as _getLogger

from triton_scraper.config import LOGGER_NAME as _LOGGER_NAME

from lxml.etree import XPath

#: Floating-point Not-a-Number (NaN) value.
NaN = _Decimal('NaN')
#: Floating-point infinity value; i.e. float('infinity')
INFINITY = float('infinity')

# Common XPath component
RELATIVE_PREFIX = "descendant-or-self::node()"

# TritonScraper's logger
LOGGER = _getLogger(_LOGGER_NAME)

# From the itertools cookbook: http://docs.python.org/library/itertools.html#recipes
def grouper(n, iterable, fillvalue=None):
    "grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
    args = [iter(iterable)] * n
    return _izip_longest(fillvalue=fillvalue, *args)

# Copyright (c) 2010 <NAME> <<EMAIL>>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

"""
This module contains general utility functions and shared constants used by other TritonScraper modules.

:copyright: (c) 2010 by <NAME>.
:license: MIT, see :file:`LICENSE.txt` for more details.
"""

from itertools import izip_longest as _izip_longest
from decimal import Decimal as _Decimal
from logging import getLogger as _getLogger

from triton_scraper.config import LOGGER_NAME as _LOGGER_NAME

from lxml.etree import XPath

#: Floating-point Not-a-Number (NaN) value.
NaN = _Decimal('NaN')
#: Floating-point infinity value; i.e. float('infinity')
INFINITY = float('infinity')

# Common XPath component
RELATIVE_PREFIX = "descendant-or-self::node()"

# TritonScraper's logger
LOGGER = _getLogger(_LOGGER_NAME)

# From the itertools cookbook: http://docs.python.org/library/itertools.html#recipes
def grouper(n, iterable, fillvalue=None):
    "grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
    args = [iter(iterable)] * n
    return _izip_longest(fillvalue=fillvalue, *args)
# Copyright (c) 2010 <NAME> <<EMAIL>> # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # THE SOFTWARE. This module contains general utility functions and shared constants used by other TritonScraper modules.  :copyright: (c) 2010 by <NAME>. :license: MIT, see :file:`LICENSE.txt` for more details. #: Floating-point Not-a-Number (NaN) value. #: Floating-point infinity value; i.e. float('infinity') # Common XPath component # TritonScraper's logger # From the itertools cookbook: http://docs.python.org/library/itertools.html#recipes