from Products.PageTemplates.PageTemplateFile import PageTemplateFile

import logging

definedFields=['WEB_title','xdata_01','xdata_02','xdata_03','xdata_04','xdata_05','xdata_06','xdata_07','xdata_08','xdata_09','xdata_10','xdata_11','xdata_12','xdata_13','WEB_project_header','WEB_project_description','WEB_related_pub']

checkFields = ['xdata_01']

#ersetzt logging
def logger(txt,method,txt2):
    """logging""" 
    logging.info(txt+ txt2)
                 
def getTextFromNode(nodename):
    
    nodelist=nodename.childNodes
    rc = ""
    for node in nodelist:
        if node.nodeType == node.TEXT_NODE:
           rc = rc + node.data
    return rc

def getTemplate(self, tpName):
    """get a template file either form the instance or from the product"""
    #ext=self.ZopeFind(self.aq_parent,obj_ids=[tpName])
    if hasattr(self,tpName):
        pt = getattr(self,tpName)
    else:
        pt=PageTemplateFile('zpt/'+tpName, globals()).__of__(self)
    assert(pt)
    return pt

def sortStopWordsF(self,xo,yo):
    if not hasattr(self,'_v_stopWords'):
        self._v_stopWords=self.stopwords_en.data.split("\n")
    
    x=unicodify(xo[1])
    y=unicodify(yo[1])
    
    strx=x.split(" ")
    stry=y.split(" ")
    
    for tmp in strx:
        if tmp.lower() in self._v_stopWords:
            del strx[strx.index(tmp)]
    
    for tmp in stry:
        if tmp.lower() in self._v_stopWords:
            del stry[stry.index(tmp)]
            
    return cmp(" ".join(strx)," ".join(stry))
    
def sortStopWords(self):
    return lambda x,y : sortStopWordsF(self,x,y)
    
def sortF(x,y):
    try:
        return cmp(x[1],y[1])
    except:
        try:
            return cmp(str(x[1]),str(y[1]))
        except:           
            
            return 0 
    
def sortI(x,y):
    xsplit=x[1].split(".")
    ysplit=y[1].split(".")
    xret=""
    yret=""
    try:
        for i in range(5):
            try:
                yret=yret+"%04i"%int(xsplit[i])
            except:
                yret=yret+"%04i"%0

            try:
                xret=xret+"%04i"%int(ysplit[i])
            except:
                xret=xret+"%04i"%0
                
        
        return cmp(int(yret),int(xret))
    except:
        return cmp(x[1],y[1])


def unicodify(s):
    """decode str (utf-8 or latin-1 representation) into unicode object"""
    if not s:
        return u""
    if isinstance(s, str):
        try:
            return s.decode('utf-8')
        except:
            return s.decode('latin-1')
    else:
        return s

def utf8ify(s):
    """encode unicode object or string into byte string in utf-8 representation.
       assumes string objects to be utf-8"""
    if not s:
        return ""
    if isinstance(s, str):
        return s
    else:
        return s.encode('utf-8')


def shortenString(s, l, ellipsis='...'):
    """returns a string of length l (or l-1) by omitting characters in the middle of s, replacing with ellipsis."""
    l1 = int((l - len(ellipsis)) / 2)
    return "%s%s%s"%(s[:l1],ellipsis,s[-l1:])


#
# navigation methods (should better be a mixin class)
#
def getBreadcrumbs(self):
    """return list of breadcrumbs from here to the root"""
    crumbs = [(self.title, self.absolute_url(), self)]
    parent = self.aq_parent
    if hasattr(parent, 'getBreadcrumbs'):
        if self.title:
            return parent.getBreadcrumbs() + crumbs
        else:
            # if there's no title, skip this level
            return parent.getBreadcrumbs()
        
    return crumbs


def getSection(self, crumbs=None):
    """returns the current section name"""
    # use breadcrumbs if available
    if crumbs is not None and len(crumbs) > 0:
        return crumbs[0][2].getId()

    p = self
    sec = None
    # descend parents to the root (and remember the last id)
    while p is not None and p.meta_type != 'MPIWGRoot':
        sec = p.getId()
        p = p.aq_parent
    
    return sec

def getSubSection(self, crumbs=None):
    """returns the current subsection name"""
    # use breadcrumbs if available
    if crumbs is not None and len(crumbs) > 1:
        return crumbs[1][2].getId()

    p = self
    sec = None
    subsec = None
    # descend parents to the root (and remember the last id)
    while p is not None and p.meta_type != 'MPIWGRoot':
        subsec = sec
        sec = p.getId()
        p = p.aq_parent
    
    return subsec