#!python3
import os
import traceback
import pkgutil
import re
from itertools import chain
from . import str_transform as st
from . import char_player as cp
from .echo import echo
def show (nDeep, sText):
print(nDeep * " " + sText)
class IBDAWG:
"""INDEXABLE BINARY DIRECT ACYCLIC WORD GRAPH"""
def __init__ (self, sDicName):
self.by = pkgutil.get_data(__package__, "_dictionaries/" + sDicName)
if not self.by:
raise OSError("# Error. File not found or not loadable: "+sDicName)
if self.by[0:7] != b"/pyfsa/":
raise TypeError("# Error. Not a pyfsa binary dictionary. Header: {}".format(self.by[0:9]))
if not(self.by[7:8] == b"1" or self.by[7:8] == b"2" or self.by[7:8] == b"3"):
raise ValueError("# Error. Unknown dictionary version: {}".format(self.by[7:8]))
try:
header, info, values, bdic = self.by.split(b"\0\0\0\0", 3)
except Exception:
raise Exception
self.sName = sDicName
self.nVersion = int(self.by[7:8].decode("utf-8"))
self.sHeader = header.decode("utf-8")
self.lArcVal = values.decode("utf-8").split("\t")
self.nArcVal = len(self.lArcVal)
self.byDic = bdic
l = info.decode("utf-8").split("/")
self.sLang = l[0]
self.nChar = int(l[1])
self.nBytesArc = int(l[2])
self.nBytesNodeAddress = int(l[3])
self.nEntries = int(l[4])
self.nNode = int(l[5])
self.nArc = int(l[6])
self.nAff = int(l[7])
self.cStemming = l[8]
if self.cStemming == "S":
self.funcStemming = st.changeWordWithSuffixCode
elif self.cStemming == "A":
self.funcStemming = st.changeWordWithAffixCode
else:
self.funcStemming = st.noStemming
self.nTag = self.nArcVal - self.nChar - self.nAff
# <dChar> to get the value of an arc, <dCharVal> to get the char of an arc with its value
self.dChar = {}
for i in range(1, self.nChar):
self.dChar[self.lArcVal[i]] = i
self.dCharVal = { v: k for k, v in self.dChar.items() }
self._arcMask = (2 ** ((self.nBytesArc * 8) - 3)) - 1
self._finalNodeMask = 1 << ((self.nBytesArc * 8) - 1)
self._lastArcMask = 1 << ((self.nBytesArc * 8) - 2)
self._addrBitMask = 1 << ((self.nBytesArc * 8) - 3) # version 2
self.nBytesOffset = 1 # version 3
# Configuring DAWG functions according to nVersion
if self.nVersion == 1:
self.morph = self._morph1
self.stem = self._stem1
self._lookupArcNode = self._lookupArcNode1
self._getArcs = self._getArcs1
self._writeNodes = self._writeNodes1
elif self.nVersion == 2:
self.morph = self._morph2
self.stem = self._stem2
self._lookupArcNode = self._lookupArcNode2
self._getArcs = self._getArcs2
self._writeNodes = self._writeNodes2
elif self.nVersion == 3:
self.morph = self._morph3
self.stem = self._stem3
self._lookupArcNode = self._lookupArcNode3
self._getArcs = self._getArcs3
self._writeNodes = self._writeNodes3
else:
raise ValueError(" # Error: unknown code: {}".format(self.nVersion))
self.bOptNumSigle = False
self.bOptNumAtLast = False
def getInfo (self):
return " Language: {0.sLang:>10} Version: {0.nVersion:>2} Stemming: {0.cStemming}FX\n" \
" Arcs values: {0.nArcVal:>10,} = {0.nChar:>5,} characters, {0.nAff:>6,} affixes, {0.nTag:>6,} tags\n" \
" Dictionary: {0.nEntries:>12,} entries, {0.nNode:>11,} nodes, {0.nArc:>11,} arcs\n" \
" Address size: {0.nBytesNodeAddress:>1} bytes, Arc size: {0.nBytesArc:>1} bytes\n".format(self)
def writeAsJSObject (self, spfDest, bInJSModule=False):
"write IBDAWG as a JavaScript object in a JavaScript module"
import json
with open(spfDest, "w", encoding="utf-8", newline="\n") as hDst:
if bInJSModule:
hDst.write('// JavaScript\n// Generated data (do not edit)\n\n"use strict";\n\nconst dictionary = ')
hDst.write(json.dumps({
"sName": self.sName,
"nVersion": self.nVersion,
"sHeader": self.sHeader,
"lArcVal": self.lArcVal,
"nArcVal": self.nArcVal,
"byDic": [ e for e in self.byDic ],
"sLang": self.sLang,
"nChar": self.nChar,
"nBytesArc": self.nBytesArc,
"nBytesNodeAddress": self.nBytesNodeAddress,
"nEntries": self.nEntries,
"nNode": self.nNode,
"nArc": self.nArc,
"nAff": self.nAff,
"cStemming": self.cStemming,
"nTag": self.nTag,
"dChar": self.dChar,
"_arcMask": self._arcMask,
"_finalNodeMask": self._finalNodeMask,
"_lastArcMask": self._lastArcMask,
"_addrBitMask": self._addrBitMask,
"nBytesOffset": self.nBytesOffset
}, ensure_ascii=False))
if bInJSModule:
hDst.write(";\n\nexports.dictionary = dictionary;\n")
def isValidToken (self, sToken):
"checks if <sToken> is valid (if there is hyphens in <sToken>, <sToken> is split, each part is checked)"
if self.isValid(sToken):
return True
if "-" in sToken:
if sToken.count("-") > 4:
return True
return all(self.isValid(sWord) for sWord in sToken.split("-"))
return False
def isValid (self, sWord):
"checks if <sWord> is valid (different casing tested if the first letter is a capital)"
if not sWord:
return None
if "’" in sWord: # ugly hack
sWord = sWord.replace("’", "'")
if self.lookup(sWord):
return True
if sWord[0:1].isupper():
if len(sWord) > 1:
if sWord.istitle():
return self.lookup(sWord.lower())
if sWord.isupper():
if self.bOptNumSigle:
return True
return self.lookup(sWord.lower()) or self.lookup(sWord.capitalize())
return self.lookup(sWord[:1].lower() + sWord[1:])
else:
return self.lookup(sWord.lower())
return False
def lookup (self, sWord):
"returns True if <sWord> in dictionary (strict verification)"
iAddr = 0
for c in sWord:
if c not in self.dChar:
return False
iAddr = self._lookupArcNode(self.dChar[c], iAddr)
if iAddr == None:
return False
return bool(int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask)
def getMorph (self, sWord):
"retrieves morphologies list, different casing allowed"
l = self.morph(sWord)
if sWord[0:1].isupper():
l.extend(self.morph(sWord.lower()))
if sWord.isupper() and len(sWord) > 1:
l.extend(self.morph(sWord.capitalize()))
return l
def suggest (self, sWord, nMaxSugg=10):
"returns a set of suggestions for <sWord>"
aSugg = set()
if sWord.istitle():
aSugg.update(self._suggest(sWord, nMaxDel=len(sWord) // 5))
aSugg.update(self._suggest(sWord.lower(), nMaxDel=len(sWord) // 5))
aSugg = set(map(lambda sSugg: sSugg.title(), aSugg))
elif sWord.islower():
aSugg.update(self._suggest(sWord, nMaxDel=len(sWord) // 5))
aSugg.update(self._suggest(sWord.title(), nMaxDel=len(sWord) // 5))
else:
aSugg.update(self._suggest(sWord, nMaxDel=len(sWord) // 5))
if not aSugg:
print("crush useless chars")
aSugg.update(self._suggestWithCrushedUselessChars(cp.clearWord(sWord)))
aSugg = filter(lambda sSugg: not sSugg.endswith("è") and not sSugg.endswith("È"), aSugg) # fr language
return sorted(aSugg, key=lambda sSugg: cp.distanceDamerauLevenshtein(sWord, sSugg))[:nMaxSugg]
def _suggest (self, sRemain, nMaxDel=0, nDeep=0, iAddr=0, sNewWord="", bAvoidLoop=False):
"returns a set of suggestions"
# recursive function
#show(nDeep, sNewWord + ":" + sRemain)
aSugg = set()
if not sRemain:
if int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask:
#show(nDeep, "___" + sNewWord + "___")
aSugg.add(sNewWord)
for sTail in self._getTails(iAddr):
aSugg.add(sNewWord+sTail)
return aSugg
cCurrent = sRemain[0:1]
for cChar, jAddr in self._getSimilarArcs(cCurrent, iAddr):
aSugg.update(self._suggest(sRemain[1:], nMaxDel, nDeep+1, jAddr, sNewWord+cChar))
if not bAvoidLoop: # avoid infinite loop
if cCurrent == sRemain[1:2]:
# same char, we remove 1 char without adding 1 to <sNewWord>
aSugg.update(self._suggest(sRemain[1:], nMaxDel, nDeep+1, iAddr, sNewWord))
else:
# switching chars
aSugg.update(self._suggest(sRemain[1:2]+sRemain[0:1]+sRemain[2:], nMaxDel, nDeep+1, iAddr, sNewWord, True))
# delete char
if nMaxDel > 0:
aSugg.update(self._suggest(sRemain[1:], nMaxDel-1, nDeep+1, iAddr, sNewWord, True))
# Replacements
for sRepl in cp.d1toX.get(cCurrent, ()):
aSugg.update(self._suggest(sRepl + sRemain[1:], nMaxDel, nDeep+1, iAddr, sNewWord, True))
for sRepl in cp.d2toX.get(sRemain[0:2], ()):
aSugg.update(self._suggest(sRepl + sRemain[2:], nMaxDel, nDeep+1, iAddr, sNewWord, True))
# end of word
if len(sRemain) == 2:
for sRepl in cp.dFinal2.get(sRemain, ()):
aSugg.update(self._suggest(sRepl, nMaxDel, nDeep+1, iAddr, sNewWord, True))
elif len(sRemain) == 1:
aSugg.update(self._suggest("", nMaxDel, nDeep+1, iAddr, sNewWord, True)) # remove last char and go on
for sRepl in cp.dFinal1.get(sRemain, ()):
aSugg.update(self._suggest(sRepl, nMaxDel, nDeep+1, iAddr, sNewWord, True))
return aSugg
def _getSimilarArcs (self, cChar, iAddr):
"generator: yield similar char of <cChar> and address of the following node"
for c in cp.d1to1.get(cChar, [cChar]):
if c in self.dChar:
jAddr = self._lookupArcNode(self.dChar[c], iAddr)
if jAddr:
yield (c, jAddr)
def _getTails (self, iAddr, sTail="", n=2):
"return a list of suffixes ending at a distance of <n> from <iAddr>"
aTails = set()
for nVal, jAddr in self._getArcs(iAddr):
if nVal < self.nChar:
if int.from_bytes(self.byDic[jAddr:jAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask:
aTails.add(sTail + self.dCharVal[nVal])
if n and not aTails:
aTails.update(self._getTails(jAddr, sTail+self.dCharVal[nVal], n-1))
return aTails
def _suggestWithCrushedUselessChars (self, sWord, nDeep=0, iAddr=0, sNewWord="", bAvoidLoop=False):
aSugg = set()
if not sWord:
if int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask:
show(nDeep, "!!! " + sNewWord + " !!!")
aSugg.add(sNewWord)
return aSugg
cCurrent = sWord[0:1]
for cChar, jAddr in self._getSimilarArcsAndCrushedChars(cCurrent, iAddr):
show(nDeep, cChar)
aSugg.update(self._suggestWithCrushedUselessChars(sWord[1:], nDeep+1, jAddr, sNewWord+cChar))
return aSugg
def _getSimilarArcsAndCrushedChars (self, cChar, iAddr):
"generator: yield similar char of <cChar> and address of the following node"
for nVal, jAddr in self._getArcs(iAddr):
if self.dCharVal.get(nVal, None) in cp.aVovels:
yield (self.dCharVal[nVal], jAddr)
yield from self._getSimilarArcs(cChar, iAddr)
def drawPath (self, sWord, iAddr=0):
"show the path taken by <sWord> in the graph"
cChar = sWord[0:1] if sWord else " "
iPos = -1
n = 0
print(cChar + ": ", end="")
for nVal, jAddr in self._getArcs(iAddr):
if nVal in self.dCharVal:
print(self.dCharVal[nVal], end="")
if self.dCharVal[nVal] == sWord[0:1]:
iNextNodeAddr = jAddr
iPos = n
n += 1
if not sWord:
return
if iPos >= 0:
print("\n "+ " " * iPos + "|")
self.drawPath(sWord[1:], iNextNodeAddr)
def select (self, sPattern=""):
"generator: returns all entries which morphology fits <sPattern>"
zPattern = None
try:
zPattern = re.compile(sPattern)
except:
print("# Error in regex pattern")
traceback.print_exc()
yield from self._select1(zPattern, 0, "")
# def morph (self, sWord):
# is defined in __init__
# VERSION 1
def _select1 (self, zPattern, iAddr, sWord):
# recursive generator
for nVal, jAddr in self._getArcs1(iAddr):
if nVal < self.nChar:
# simple character
yield from self._select1(zPattern, jAddr, sWord + self.lArcVal[nVal])
else:
sEntry = sWord + "\t" + self.funcStemming(sWord, self.lArcVal[nVal])
for nMorphVal, _ in self._getArcs1(jAddr):
if not zPattern or zPattern.search(self.lArcVal[nMorphVal]):
yield sEntry + "\t" + self.lArcVal[nMorphVal]
def _morph1 (self, sWord):
"returns morphologies of <sWord>"
iAddr = 0
for c in sWord:
if c not in self.dChar:
return []
iAddr = self._lookupArcNode(self.dChar[c], iAddr)
if iAddr == None:
return []
if (int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask):
l = []
nRawArc = 0
while not (nRawArc & self._lastArcMask):
iEndArcAddr = iAddr + self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if nArc >= self.nChar:
# This value is not a char, this is a stemming code
sStem = ">" + self.funcStemming(sWord, self.lArcVal[nArc])
# Now , we go to the next node and retrieve all following arcs values, all of them are tags
iAddr2 = int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
nRawArc2 = 0
while not (nRawArc2 & self._lastArcMask):
iEndArcAddr2 = iAddr2 + self.nBytesArc
nRawArc2 = int.from_bytes(self.byDic[iAddr2:iEndArcAddr2], byteorder='big')
l.append(sStem + " " + self.lArcVal[nRawArc2 & self._arcMask])
iAddr2 = iEndArcAddr2+self.nBytesNodeAddress
iAddr = iEndArcAddr+self.nBytesNodeAddress
return l
return []
def _stem1 (self, sWord):
"returns stems list of <sWord>"
iAddr = 0
for c in sWord:
if c not in self.dChar:
return []
iAddr = self._lookupArcNode(self.dChar[c], iAddr)
if iAddr == None:
return []
if (int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask):
l = []
nRawArc = 0
while not (nRawArc & self._lastArcMask):
iEndArcAddr = iAddr + self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if nArc >= self.nChar:
# This value is not a char, this is a stemming code
l.append(self.funcStemming(sWord, self.lArcVal[nArc]))
iAddr = iEndArcAddr+self.nBytesNodeAddress
return l
return []
def _lookupArcNode1 (self, nVal, iAddr):
"looks if <nVal> is an arc at the node at <iAddr>, if yes, returns address of next node else None"
while True:
iEndArcAddr = iAddr+self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
if nVal == (nRawArc & self._arcMask):
# the value we are looking for
# we return the address of the next node
return int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
else:
# value not found
if (nRawArc & self._lastArcMask):
return None
iAddr = iEndArcAddr+self.nBytesNodeAddress
def _getArcs1 (self, iAddr):
"generator: return all arcs at <iAddr> as tuples of (nVal, iAddr)"
while True:
iEndArcAddr = iAddr+self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
yield (nRawArc & self._arcMask, int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big'))
if (nRawArc & self._lastArcMask):
break
iAddr = iEndArcAddr+self.nBytesNodeAddress
def _writeNodes1 (self, spfDest):
"for debugging only"
print(" > Write binary nodes")
with codecs.open(spfDest, 'w', 'utf-8', newline="\n") as hDst:
iAddr = 0
hDst.write("i{:_>10} -- #{:_>10}\n".format("0", iAddr))
while iAddr < len(self.byDic):
iEndArcAddr = iAddr+self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
hDst.write(" {:<20} {:0>16} i{:>10} #{:_>10}\n".format(self.lArcVal[nArc], bin(nRawArc)[2:], "?", \
int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], \
byteorder='big')))
iAddr = iEndArcAddr+self.nBytesNodeAddress
if (nRawArc & self._lastArcMask) and iAddr < len(self.byDic):
hDst.write("\ni{:_>10} -- #{:_>10}\n".format("?", iAddr))
hDst.close()
# VERSION 2
def _morph2 (self, sWord):
"returns morphologies of <sWord>"
iAddr = 0
for c in sWord:
if c not in self.dChar:
return []
iAddr = self._lookupArcNode(self.dChar[c], iAddr)
if iAddr == None:
return []
if (int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask):
l = []
nRawArc = 0
while not (nRawArc & self._lastArcMask):
iEndArcAddr = iAddr + self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if nArc >= self.nChar:
# This value is not a char, this is a stemming code
sStem = ">" + self.funcStemming(sWord, self.lArcVal[nArc])
# Now , we go to the next node and retrieve all following arcs values, all of them are tags
if not (nRawArc & self._addrBitMask):
iAddr2 = int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
else:
# we go to the end of the node
iAddr2 = iEndArcAddr
while not (nRawArc & self._lastArcMask):
nRawArc = int.from_bytes(self.byDic[iAddr2:iAddr2+self.nBytesArc], byteorder='big')
iAddr2 += self.nBytesArc + self.nBytesNodeAddress
nRawArc2 = 0
while not (nRawArc2 & self._lastArcMask):
iEndArcAddr2 = iAddr2 + self.nBytesArc
nRawArc2 = int.from_bytes(self.byDic[iAddr2:iEndArcAddr2], byteorder='big')
l.append(sStem + " " + self.lArcVal[nRawArc2 & self._arcMask])
iAddr2 = iEndArcAddr2+self.nBytesNodeAddress if not (nRawArc2 & self._addrBitMask) else iEndArcAddr2
iAddr = iEndArcAddr+self.nBytesNodeAddress if not (nRawArc & self._addrBitMask) else iEndArcAddr
return l
return []
def _stem2 (self, sWord):
"returns stems list of <sWord>"
iAddr = 0
for c in sWord:
if c not in self.dChar:
return []
iAddr = self._lookupArcNode(self.dChar[c], iAddr)
if iAddr == None:
return []
if (int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask):
l = []
nRawArc = 0
while not (nRawArc & self._lastArcMask):
iEndArcAddr = iAddr + self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if nArc >= self.nChar:
# This value is not a char, this is a stemming code
l.append(self.funcStemming(sWord, self.lArcVal[nArc]))
# Now , we go to the next node
if not (nRawArc & self._addrBitMask):
iAddr2 = int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
else:
# we go to the end of the node
iAddr2 = iEndArcAddr
while not (nRawArc & self._lastArcMask):
nRawArc = int.from_bytes(self.byDic[iAddr2:iAddr2+self.nBytesArc], byteorder='big')
iAddr2 += self.nBytesArc + self.nBytesNodeAddress
iAddr = iEndArcAddr+self.nBytesNodeAddress if not (nRawArc & self._addrBitMask) else iEndArcAddr
return l
return []
def _lookupArcNode2 (self, nVal, iAddr):
"looks if <nVal> is an arc at the node at <iAddr>, if yes, returns address of next node else None"
while True:
iEndArcAddr = iAddr+self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
if nVal == (nRawArc & self._arcMask):
# the value we are looking for
if not (nRawArc & self._addrBitMask):
# we return the address of the next node
return int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
else:
# we go to the end of the node
iAddr = iEndArcAddr
while not (nRawArc & self._lastArcMask):
nRawArc = int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big')
iAddr += self.nBytesArc + self.nBytesNodeAddress if not (nRawArc & self._addrBitMask) else self.nBytesArc
return iAddr
else:
# value not found
if (nRawArc & self._lastArcMask):
return None
iAddr = iEndArcAddr+self.nBytesNodeAddress if not (nRawArc & self._addrBitMask) else iEndArcAddr
def _writeNodes2 (self, spfDest):
"for debugging only"
print(" > Write binary nodes")
with codecs.open(spfDest, 'w', 'utf-8', newline="\n") as hDst:
iAddr = 0
hDst.write("i{:_>10} -- #{:_>10}\n".format("0", iAddr))
while iAddr < len(self.byDic):
iEndArcAddr = iAddr+self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if not (nRawArc & self._addrBitMask):
iNextNodeAddr = int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
hDst.write(" {:<20} {:0>16} i{:>10} #{:_>10}\n".format(self.lArcVal[nArc], bin(nRawArc)[2:], "?", iNextNodeAddr))
iAddr = iEndArcAddr+self.nBytesNodeAddress
else:
hDst.write(" {:<20} {:0>16}\n".format(self.lArcVal[nArc], bin(nRawArc)[2:]))
iAddr = iEndArcAddr
if (nRawArc & self._lastArcMask):
hDst.write("\ni{:_>10} -- #{:_>10}\n".format("?", iAddr))
hDst.close()
# VERSION 3
def _morph3 (self, sWord):
"returns morphologies of <sWord>"
iAddr = 0
for c in sWord:
if c not in self.dChar:
return []
iAddr = self._lookupArcNode(self.dChar[c], iAddr)
if iAddr == None:
return []
if (int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask):
l = []
nRawArc = 0
iAddrNode = iAddr
while not (nRawArc & self._lastArcMask):
iEndArcAddr = iAddr + self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if nArc >= self.nChar:
# This value is not a char, this is a stemming code
sStem = ">" + self.funcStemming(sWord, self.lArcVal[nArc])
# Now , we go to the next node and retrieve all following arcs values, all of them are tags
if not (nRawArc & self._addrBitMask):
iAddr2 = int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
else:
iAddr2 = iAddrNode + int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesOffset], byteorder='big')
nRawArc2 = 0
while not (nRawArc2 & self._lastArcMask):
iEndArcAddr2 = iAddr2 + self.nBytesArc
nRawArc2 = int.from_bytes(self.byDic[iAddr2:iEndArcAddr2], byteorder='big')
l.append(sStem + " " + self.lArcVal[nRawArc2 & self._arcMask])
iAddr2 = iEndArcAddr2+self.nBytesNodeAddress if not (nRawArc2 & self._addrBitMask) else iEndArcAddr2+self.nBytesOffset
iAddr = iEndArcAddr+self.nBytesNodeAddress if not (nRawArc & self._addrBitMask) else iEndArcAddr+self.nBytesOffset
return l
return []
def _stem3 (self, sWord):
"returns stems list of <sWord>"
iAddr = 0
for c in sWord:
if c not in self.dChar:
return []
iAddr = self._lookupArcNode(self.dChar[c], iAddr)
if iAddr == None:
return []
if (int.from_bytes(self.byDic[iAddr:iAddr+self.nBytesArc], byteorder='big') & self._finalNodeMask):
l = []
nRawArc = 0
iAddrNode = iAddr
while not (nRawArc & self._lastArcMask):
iEndArcAddr = iAddr + self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if nArc >= self.nChar:
# This value is not a char, this is a stemming code
l.append(self.funcStemming(sWord, self.lArcVal[nArc]))
iAddr = iEndArcAddr+self.nBytesNodeAddress if not (nRawArc & self._addrBitMask) else iEndArcAddr+self.nBytesOffset
return l
return []
def _lookupArcNode3 (self, nVal, iAddr):
"looks if <nVal> is an arc at the node at <iAddr>, if yes, returns address of next node else None"
iAddrNode = iAddr
while True:
iEndArcAddr = iAddr+self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
if nVal == (nRawArc & self._arcMask):
# the value we are looking for
if not (nRawArc & self._addrBitMask):
return int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
else:
return iAddrNode + int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesOffset], byteorder='big')
else:
# value not found
if (nRawArc & self._lastArcMask):
return None
iAddr = iEndArcAddr+self.nBytesNodeAddress if not (nRawArc & self._addrBitMask) else iEndArcAddr+self.nBytesOffset
def _writeNodes3 (self, spfDest):
"for debugging only"
print(" > Write binary nodes")
with codecs.open(spfDest, 'w', 'utf-8', newline="\n") as hDst:
iAddr = 0
hDst.write("i{:_>10} -- #{:_>10}\n".format("0", iAddr))
while iAddr < len(self.byDic):
iEndArcAddr = iAddr+self.nBytesArc
nRawArc = int.from_bytes(self.byDic[iAddr:iEndArcAddr], byteorder='big')
nArc = nRawArc & self._arcMask
if not (nRawArc & self._addrBitMask):
iNextNodeAddr = int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesNodeAddress], byteorder='big')
hDst.write(" {:<20} {:0>16} i{:>10} #{:_>10}\n".format(self.lArcVal[nArc], bin(nRawArc)[2:], "?", iNextNodeAddr))
iAddr = iEndArcAddr+self.nBytesNodeAddress
else:
iNextNodeAddr = int.from_bytes(self.byDic[iEndArcAddr:iEndArcAddr+self.nBytesOffset], byteorder='big')
hDst.write(" {:<20} {:0>16} i{:>10} +{:_>10}\n".format(self.lArcVal[nArc], bin(nRawArc)[2:], "?", iNextNodeAddr))
iAddr = iEndArcAddr+self.nBytesOffset
if (nRawArc & self._lastArcMask):
hDst.write("\ni{:_>10} -- #{:_>10}\n".format("?", iAddr))
hDst.close()