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class IBDAWG:
"""INDEXABLE BINARY DIRECT ACYCLIC WORD GRAPH"""
def __init__ (self, source):
if isinstance(source, str):
self.by = pkgutil.get_data(__package__, "_dictionaries/" + source)
if not self.by:
by = pkgutil.get_data(__package__, "_dictionaries/" + source)
if not by:
raise OSError("# Error. File not found or not loadable: "+source)
self.sFileName = source
if source.endswith(".bdic"):
self._initBinary()
elif source.endswith(".json"):
self._initJSON(json.loads(self.by.decode("utf-8"))) #json.loads(self.by) # In Python 3.6, can read directly binary strings
else:
raise OSError("# Error. Unknown file type: "+source)
else:
self._initJSON(source)
self.sFileName = source if isinstance(source, str) else "[None]"
self.__dict__.update(oData)
self.byDic = binascii.unhexlify(self.sByDic)
self.dCharVal = { v: k for k, v in self.dChar.items() }
self.a2grams = set(getattr(self, 'l2grams')) if hasattr(self, 'l2grams') else None
# Performance trick:
# Instead of converting bytes to integers each times we parse the binary dictionary,
# we do it once, then parse the array
nAcc = 0
byBuffer = b""
self.lByDic = []
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# lexicographer module ?
self.lexicographer = None
try:
self.lexicographer = importlib.import_module(".lexgraph_"+self.sLangCode, "grammalecte.graphspell")
except ImportError:
print("# No module <graphspell.lexgraph_"+self.sLangCode+".py>")
def _initBinary (self):
"initialize with binary structure file"
if self.by[0:17] != b"/grammalecte-fsa/":
raise TypeError("# Error. Not a grammalecte-fsa binary dictionary. Header: {}".format(self.by[0:9]))
if not(self.by[17:18] == b"1" or self.by[17:18] == b"2" or self.by[17:18] == b"3"):
raise ValueError("# Error. Unknown dictionary version: {}".format(self.by[17:18]))
try:
byHeader, byInfo, byValues, by2grams, byDic = self.by.split(b"\0\0\0\0", 4)
except Exception:
raise Exception
self.nCompressionMethod = int(self.by[17:18].decode("utf-8"))
self.sHeader = byHeader.decode("utf-8")
self.lArcVal = byValues.decode("utf-8").split("\t")
self.nArcVal = len(self.lArcVal)
self.byDic = byDic
self.a2grams = set(by2grams.decode("utf-8").split("\t"))
l = byInfo.decode("utf-8").split("//")
self.sLangCode = l.pop(0)
self.sLangName = l.pop(0)
self.sDicName = l.pop(0)
self.sDescription = l.pop(0)
self.sDate = l.pop(0)
self.nChar = int(l.pop(0))
self.nBytesArc = int(l.pop(0))
self.nBytesNodeAddress = int(l.pop(0))
self.nEntry = int(l.pop(0))
self.nNode = int(l.pop(0))
self.nArc = int(l.pop(0))
self.nAff = int(l.pop(0))
self.cStemming = l.pop(0)
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+1):
self.dChar[self.lArcVal[i]] = i
self.dCharVal = { v: k for k, v in self.dChar.items() }
def _initJSON (self, oJSON):
"initialize with a JSON text file"
self.sByDic = "" # init to prevent pylint whining
self.__dict__.update(oJSON)
self.byDic = binascii.unhexlify(self.sByDic)
self.dCharVal = { v: k for k, v in self.dChar.items() }
self.a2grams = set(getattr(self, 'l2grams')) if hasattr(self, 'l2grams') else None
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