# -*- coding: utf-8 -*-
##############################################################################
#
# Copyright (C) 2005, Fabien Pinckaers, UCL, FSA
# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#
##############################################################################

import re
import reportlab
import reportlab.lib.units

units = [
    (re.compile('^(-?[0-9\.]+)\s*in$'), reportlab.lib.units.inch),
    (re.compile('^(-?[0-9\.]+)\s*cm$'), reportlab.lib.units.cm),
    (re.compile('^(-?[0-9\.]+)\s*mm$'), reportlab.lib.units.mm),
    (re.compile('^(-?[0-9\.]+)\s*px$'), 0.7),
    (re.compile('^(-?[0-9\.]+)\s*$'), 1)
]

def unit_get(size):
    global units
    for unit in units:
        res = unit[0].search(size, 0)
        if res:
            return int(unit[1]*float(res.group(1))*1.3)
    return False

def tuple_int_get(node, attr_name, default=None):
    if not node.get(attr_name):
        return default
    res = [int(x) for x in node.get(attr_name).split(',')]
    return res

def bool_get(value):
    return (str(value)=="1") or (value.lower()=='yes')

def attr_get(node, attrs, dict=None):
    if dict is None:
        dict = {}
    res = {}
    for name in attrs:
        if node.get(name):
            res[name] =  unit_get(node.get(name))
    for key in dict:
        if node.get(key):
            if dict[key]=='str':
                res[key] = str(node.get(key))
            elif dict[key]=='bool':
                res[key] = bool_get(node.get(key))
            elif dict[key]=='int':
                res[key] = int(node.get(key))
    return res

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