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added missing file and fixed linenum problems

    1: """
    2: CDLI word and grapheme splitter
    3: """
    4: 
    5: from Products.ZCTextIndex.PipelineFactory import element_factory
    6: 
    7: import re
    8: import logging
    9: 
   10: def getSupportedEncoding(encodings):
   11:     for encoding in encodings:
   12:         try:
   13:             unicode('A', encoding)
   14:             return encoding
   15:         except:
   16:             pass
   17:     return 'utf-8'
   18: 
   19: 
   20: 
   21: """beta of a fulltext splitter for cdli
   22: 
   23: """
   24: ignoreLines=['$','@','#','&','>']
   25: separators=['']
   26: # kommas relevant for graphemes will not be deleted
   27: komma_exception="([^sStThH]),"
   28: komma_exceptionex=re.compile(komma_exception)
   29: # grapheme boundaries
   30: #graphemeBounds="\{|\}|<|>|\(|\)|-|_|\#|,|\||\]|\[|\!|\?"
   31: graphemeBounds="\{|\}|<|>|-|_|\#|,|\]|\[|\!|\?|\""
   32: graphemeIgnore="<|>|\#|\||\]|\[|\!|\?\*|;"
   33: # for words 
   34: #wordBounds="<|>|\(|\)|_|\#|,|\||\]|\[|\!|\?"
   35: wordBounds="_|,|\""
   36: wordIgnore="<|>|\#|\||\]|\[|\!|\?\*|;"
   37:            
   38: class cdliSplitter:
   39:     """base class for splitter. 
   40:     the difference between word and grapheme splitter 
   41:     is the word boundary list."""
   42:     
   43:     default_encoding = "utf-8"
   44:     bounds=graphemeBounds
   45:     boundsex=re.compile(graphemeBounds)
   46:     ignore=graphemeIgnore
   47:     ignorex=re.compile(graphemeIgnore)
   48:     indexName="cdliSplitter"
   49:     
   50:     
   51:     def process(self, lst):
   52:         """gets a list of strings and returns a list of words"""
   53:         
   54:         logging.debug("cdliSplitter: %s"%self.indexName) 
   55:         result = []
   56:         pNum=None
   57:         lineNum=None
   58:     
   59:         for t in lst:
   60:             # normalise line breaks
   61:             t.replace("\r","\n")
   62:             # split lines
   63:             for s in t.split("\n"):
   64:                 if isinstance(s, str): 
   65:                     # not unicode
   66:                     s = unicode(s, self.default_encoding, 'replace')
   67:          
   68:                 if (s!=''):
   69:                     if s[0]=='&': 
   70:                         # store pNum
   71:                         pNum=s[1:8]
   72:                         logging.debug("%s processing: %s"%(self.indexName,pNum))
   73:                         
   74:                     elif not (s[0] in ignoreLines):
   75:                         # regular line
   76:                         lineparts=s.split(". ",1)
   77:                         if len(lineparts)==1: 
   78:                             # no line number
   79:                             txt=s
   80:                         else:
   81:                             #store line number
   82:                             txt=lineparts[1]
   83:                             lineNum=lineparts[0] 
   84:                             
   85:                         # delete kommata except kommata relevant for graphemes
   86:                         txt = komma_exceptionex.sub(r"\1",txt)
   87:                         # replace word boundaries by spaces
   88:                         txt = self.boundsex.sub(' ',txt)
   89:                         # replace letters to be ignored
   90:                         txt = self.ignorex.sub('',txt)
   91:                         # split words
   92:                         words = txt.split(" ")
   93:                         for w in words:
   94:                             w=w.strip()
   95:                             if not (w==''):
   96:                                 result.append(w)
   97: 
   98:         #logging.debug("split '%s' into %s"%(lst,repr(result)))
   99:         return result
  100: 
  101: 
  102: class graphemeSplitter(cdliSplitter):
  103:     bounds=graphemeBounds
  104:     boundsex=re.compile(graphemeBounds)
  105:     ignore=graphemeIgnore
  106:     ignorex=re.compile(graphemeIgnore)
  107:     indexName="graphemeSplitter"
  108:     
  109: class wordSplitter(cdliSplitter):
  110:     bounds=wordBounds
  111:     boundsex=re.compile(wordBounds)
  112:     ignore=wordIgnore
  113:     ignorex=re.compile(wordIgnore)
  114:     indexName="wordSplitter"
  115:       
  116: try:
  117:     element_factory.registerFactory('Word Splitter',
  118:           'CDLI grapheme splitter', graphemeSplitter)
  119: except:
  120:     # in case the splitter is already registered, ValueError is raised
  121:     pass
  122: 
  123: try:
  124:     element_factory.registerFactory('Word Splitter',
  125:           'CDLI word splitter', wordSplitter)
  126: except:
  127:     # in case the splitter is already registered, ValueError is raised
  128:     pass
  129: