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sEntry = sWord + "\t" + self.funcStemming(sWord, self.lArcVal[nVal])
for nMorphVal, _ in oNextNode.arcs.items():
if not zPattern or zPattern.search(self.lArcVal[nMorphVal]):
yield sEntry + "\t" + self.lArcVal[nMorphVal]
# BINARY CONVERSION
def _calculateBinary (self, nCompressionMethod):
print(" > Write DAWG as an indexable binary dictionary [method: %d]" % nCompressionMethod)
if nCompressionMethod == 1:
self.nBytesArc = ( (self.nArcVal.bit_length() + 2) // 8 ) + 1 # We add 2 bits. See DawgNode.convToBytes1()
self.nBytesOffset = 0
self._calcNumBytesNodeAddress()
self._calcNodesAddress1()
elif nCompressionMethod == 2:
self.nBytesArc = ( (self.nArcVal.bit_length() + 3) // 8 ) + 1 # We add 3 bits. See DawgNode.convToBytes2()
self.nBytesOffset = 0
self._calcNumBytesNodeAddress()
self._calcNodesAddress2()
elif nCompressionMethod == 3:
self.nBytesArc = ( (self.nArcVal.bit_length() + 3) // 8 ) + 1 # We add 3 bits. See DawgNode.convToBytes3()
self.nBytesOffset = 1
self.nMaxOffset = (2 ** (self.nBytesOffset * 8)) - 1
self._calcNumBytesNodeAddress()
self._calcNodesAddress3()
else:
print(" # Error: unknown compression method")
print(" Arc values (chars, affixes and tags): {} -> {} bytes".format( self.nArcVal, len("\t".join(self.lArcVal).encode("utf-8")) ))
print(" Arc size: {} bytes, Address size: {} bytes -> {} * {} = {} bytes".format( self.nBytesArc, self.nBytesNodeAddress, \
self.nBytesArc+self.nBytesNodeAddress, self.nArc, \
(self.nBytesArc+self.nBytesNodeAddress)*self.nArc ))
def _calcNumBytesNodeAddress (self):
"how many bytes needed to store all nodes/arcs in the binary dictionary"
self.nBytesNodeAddress = 1
while ((self.nBytesArc + self.nBytesNodeAddress) * self.nArc) > (2 ** (self.nBytesNodeAddress * 8)):
self.nBytesNodeAddress += 1
def _calcNodesAddress1 (self):
nBytesNode = self.nBytesArc + self.nBytesNodeAddress
iAddr = len(self.oRoot.arcs) * nBytesNode
for oNode in self.lMinimizedNodes:
oNode.addr = iAddr
iAddr += max(len(oNode.arcs), 1) * nBytesNode
def _calcNodesAddress2 (self):
nBytesNode = self.nBytesArc + self.nBytesNodeAddress
iAddr = len(self.oRoot.arcs) * nBytesNode
for oNode in self.lSortedNodes:
oNode.addr = iAddr
iAddr += max(len(oNode.arcs), 1) * nBytesNode
for oNextNode in oNode.arcs.values():
if (oNode.pos + 1) == oNextNode.pos:
iAddr -= self.nBytesNodeAddress
#break
def _calcNodesAddress3 (self):
nBytesNode = self.nBytesArc + self.nBytesNodeAddress
# theorical nodes size if only addresses and no offset
self.oRoot.size = len(self.oRoot.arcs) * nBytesNode
for oNode in self.lSortedNodes:
oNode.size = max(len(oNode.arcs), 1) * nBytesNode
# rewind and calculate dropdown from the end, several times
nDiff = self.nBytesNodeAddress - self.nBytesOffset
bEnd = False
while not bEnd:
bEnd = True
# recalculate addresses
iAddr = self.oRoot.size
for oNode in self.lSortedNodes:
oNode.addr = iAddr
iAddr += oNode.size
# rewind and calculate dropdown from the end, several times
for i in range(self.nNode-1, -1, -1):
nSize = max(len(self.lSortedNodes[i].arcs), 1) * nBytesNode
for oNextNode in self.lSortedNodes[i].arcs.values():
if 1 < (oNextNode.addr - self.lSortedNodes[i].addr) < self.nMaxOffset:
nSize -= nDiff
if self.lSortedNodes[i].size != nSize:
self.lSortedNodes[i].size = nSize
bEnd = False
def getBinaryAsJSON (self, nCompressionMethod=1, bBinaryDictAsHexString=True):
"return a JSON string containing all necessary data of the dictionary (compressed as a binary string)"
self._calculateBinary(nCompressionMethod)
byDic = b""
if nCompressionMethod == 1:
byDic = self.oRoot.convToBytes1(self.nBytesArc, self.nBytesNodeAddress)
for oNode in self.lMinimizedNodes:
byDic += oNode.convToBytes1(self.nBytesArc, self.nBytesNodeAddress)
elif nCompressionMethod == 2:
byDic = self.oRoot.convToBytes2(self.nBytesArc, self.nBytesNodeAddress)
for oNode in self.lSortedNodes:
byDic += oNode.convToBytes2(self.nBytesArc, self.nBytesNodeAddress)
elif nCompressionMethod == 3:
byDic = self.oRoot.convToBytes3(self.nBytesArc, self.nBytesNodeAddress, self.nBytesOffset)
for oNode in self.lSortedNodes:
byDic += oNode.convToBytes3(self.nBytesArc, self.nBytesNodeAddress, self.nBytesOffset)
return {
"sHeader": "/grammalecte-fsa/",
"sLangCode": self.sLangCode,
"sLangName": self.sLangName,
"sDicName": self.sDicName,
"sDescription": self.sDescription,
"sFileName": self.sFileName,
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sEntry = sWord + "\t" + self.funcStemming(sWord, self.lArcVal[nVal])
for nMorphVal, _ in oNextNode.arcs.items():
if not zPattern or zPattern.search(self.lArcVal[nMorphVal]):
yield sEntry + "\t" + self.lArcVal[nMorphVal]
# BINARY CONVERSION
def _calculateBinary (self, nCompressionMethod=1):
print(" > Write DAWG as an indexable binary dictionary")
self.nBytesArc = ( (self.nArcVal.bit_length() + 2) // 8 ) + 1 # We add 2 bits. See DawgNode.convToBytes()
self.nBytesOffset = 0
self._calcNumBytesNodeAddress()
self._calcNodesAddress()
print(" Arc values (chars, affixes and tags): {} -> {} bytes".format( self.nArcVal, len("\t".join(self.lArcVal).encode("utf-8")) ))
print(" Arc size: {} bytes, Address size: {} bytes -> {} * {} = {} bytes".format( self.nBytesArc, self.nBytesNodeAddress, \
self.nBytesArc+self.nBytesNodeAddress, self.nArc, \
(self.nBytesArc+self.nBytesNodeAddress)*self.nArc ))
def _calcNumBytesNodeAddress (self):
"how many bytes needed to store all nodes/arcs in the binary dictionary"
self.nBytesNodeAddress = 1
while ((self.nBytesArc + self.nBytesNodeAddress) * self.nArc) > (2 ** (self.nBytesNodeAddress * 8)):
self.nBytesNodeAddress += 1
def _calcNodesAddress (self):
nBytesNode = self.nBytesArc + self.nBytesNodeAddress
iAddr = len(self.oRoot.arcs) * nBytesNode
for oNode in self.lMinimizedNodes:
oNode.addr = iAddr
iAddr += max(len(oNode.arcs), 1) * nBytesNode
def getBinaryAsJSON (self, nCompressionMethod=1, bBinaryDictAsHexString=True):
"return a JSON string containing all necessary data of the dictionary (compressed as a binary string)"
self._calculateBinary(nCompressionMethod)
byDic = b""
byDic = self.oRoot.convToBytes(self.nBytesArc, self.nBytesNodeAddress)
for oNode in self.lMinimizedNodes:
byDic += oNode.convToBytes(self.nBytesArc, self.nBytesNodeAddress)
return {
"sHeader": "/grammalecte-fsa/",
"sLangCode": self.sLangCode,
"sLangName": self.sLangName,
"sDicName": self.sDicName,
"sDescription": self.sDescription,
"sFileName": self.sFileName,
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with open(spfDst, "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(self.getBinaryAsJSON(nCompressionMethod, bBinaryDictAsHexString), ensure_ascii=False) )
if bInJSModule:
hDst.write(";\n\nexports.dictionary = dictionary;\n")
def writeBinary (self, sPathFile, nCompressionMethod, bDebug=False):
"""
Save as a binary file.
Format of the binary indexable dictionary:
Each section is separated with 4 bytes of \0
- Section Header:
/grammalecte-fsa/[compression method]
* compression method is an ASCII string
- Section Informations:
/[lang code]
/[lang name]
/[dictionary name]
/[date creation]
/[number of chars]
/[number of bytes for each arc]
/[number of bytes for each address node]
/[number of entries]
/[number of nodes]
/[number of arcs]
/[number of affixes]
* each field is a ASCII string
/[stemming code]
* "S" means stems are generated by /suffix_code/,
"A" means they are generated by /affix_code/
See defineSuffixCode() and defineAffixCode() for details.
"N" means no stemming
- Section Values:
* a list of strings encoded in binary from utf-8, each value separated with a tabulation
- Section Word Graph (nodes / arcs)
* A list of nodes which are a list of arcs with an address of the next node.
See DawgNode.convToBytes() for details.
- Section 2grams:
* A list of 2grams (as strings: 2 chars) encoded in binary from utf-8, each value separated with a tabulation
"""
self._calculateBinary(nCompressionMethod)
if not sPathFile.endswith(".bdic"):
sPathFile += "."+str(nCompressionMethod)+".bdic"
with open(sPathFile, 'wb') as hDst:
# header
hDst.write("/grammalecte-fsa/{}/".format(nCompressionMethod).encode("utf-8"))
hDst.write(b"\0\0\0\0")
# infos
sInfo = "{}//{}//{}//{}//{}//{}//{}//{}//{}//{}//{}//{}//{}".format(self.sLangCode, self.sLangName, self.sDicName, self.sDescription, self._getDate(), \
self.nChar, self.nBytesArc, self.nBytesNodeAddress, \
self.nEntry, self.nNode, self.nArc, self.nAff, self.cStemming)
hDst.write(sInfo.encode("utf-8"))
hDst.write(b"\0\0\0\0")
# lArcVal
hDst.write("\t".join(self.lArcVal).encode("utf-8"))
hDst.write(b"\0\0\0\0")
# 2grams
hDst.write("\t".join(self.a2grams).encode("utf-8"))
hDst.write(b"\0\0\0\0")
# DAWG: nodes / arcs
if nCompressionMethod == 1:
hDst.write(self.oRoot.convToBytes1(self.nBytesArc, self.nBytesNodeAddress))
for oNode in self.lMinimizedNodes:
hDst.write(oNode.convToBytes1(self.nBytesArc, self.nBytesNodeAddress))
elif nCompressionMethod == 2:
hDst.write(self.oRoot.convToBytes2(self.nBytesArc, self.nBytesNodeAddress))
for oNode in self.lSortedNodes:
hDst.write(oNode.convToBytes2(self.nBytesArc, self.nBytesNodeAddress))
elif nCompressionMethod == 3:
hDst.write(self.oRoot.convToBytes3(self.nBytesArc, self.nBytesNodeAddress, self.nBytesOffset))
for oNode in self.lSortedNodes:
hDst.write(oNode.convToBytes3(self.nBytesArc, self.nBytesNodeAddress, self.nBytesOffset))
if bDebug:
self._writeNodes(sPathFile, nCompressionMethod)
def _getDate (self):
return time.strftime("%Y-%m-%d %H:%M:%S")
def _writeNodes (self, sPathFile, nCompressionMethod):
"for debugging only"
print(" > Write nodes")
with open(sPathFile+".nodes."+str(nCompressionMethod)+".txt", 'w', encoding='utf-8', newline="\n") as hDst:
if nCompressionMethod == 1:
hDst.write(self.oRoot.getTxtRepr1(self.nBytesArc, self.lArcVal)+"\n")
#hDst.write( ''.join( [ "%02X " % z for z in self.oRoot.convToBytes1(self.nBytesArc, self.nBytesNodeAddress) ] ).strip() )
for oNode in self.lMinimizedNodes:
hDst.write(oNode.getTxtRepr1(self.nBytesArc, self.lArcVal)+"\n")
if nCompressionMethod == 2:
hDst.write(self.oRoot.getTxtRepr2(self.nBytesArc, self.lArcVal)+"\n")
for oNode in self.lSortedNodes:
hDst.write(oNode.getTxtRepr2(self.nBytesArc, self.lArcVal)+"\n")
if nCompressionMethod == 3:
hDst.write(self.oRoot.getTxtRepr3(self.nBytesArc, self.nBytesOffset, self.lArcVal)+"\n")
#hDst.write( ''.join( [ "%02X " % z for z in self.oRoot.convToBytes3(self.nBytesArc, self.nBytesNodeAddress, self.nBytesOffset) ] ).strip() )
for oNode in self.lSortedNodes:
hDst.write(oNode.getTxtRepr3(self.nBytesArc, self.nBytesOffset, self.lArcVal)+"\n")
class DawgNode:
"""Node of the word graph"""
NextId = 0
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with open(spfDst, "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(self.getBinaryAsJSON(nCompressionMethod, bBinaryDictAsHexString), ensure_ascii=False) )
if bInJSModule:
hDst.write(";\n\nexports.dictionary = dictionary;\n")
def _getDate (self):
return time.strftime("%Y-%m-%d %H:%M:%S")
def _writeNodes (self, sPathFile, nCompressionMethod=1):
"for debugging only"
print(" > Write nodes")
with open(sPathFile+".nodes."+str(nCompressionMethod)+".txt", 'w', encoding='utf-8', newline="\n") as hDst:
hDst.write(self.oRoot.getTxtRepr(self.nBytesArc, self.lArcVal)+"\n")
#hDst.write( ''.join( [ "%02X " % z for z in self.oRoot.convToBytes(self.nBytesArc, self.nBytesNodeAddress) ] ).strip() )
for oNode in self.lMinimizedNodes:
hDst.write(oNode.getTxtRepr(self.nBytesArc, self.lArcVal)+"\n")
class DawgNode:
"""Node of the word graph"""
NextId = 0
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self.arcs = collections.OrderedDict(sorted(self.arcs.items(), key=lambda t: dValOccur.get(t[0], 0), reverse=True))
def sortArcs2 (self, dValOccur, lArcVal):
"sort arcs of each node depending on the previous char"
self.arcs = collections.OrderedDict(sorted(self.arcs.items(), key=lambda t: dValOccur.get(lArcVal[t[0]], 0), reverse=True))
# VERSION 1 =====================================================================================================
def convToBytes1 (self, nBytesArc, nBytesNodeAddress):
"""
Convert to bytes (method 1).
Node scheme:
- Arc length is defined by nBytesArc
- Address length is defined by nBytesNodeAddress
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self.arcs = collections.OrderedDict(sorted(self.arcs.items(), key=lambda t: dValOccur.get(t[0], 0), reverse=True))
def sortArcs2 (self, dValOccur, lArcVal):
"sort arcs of each node depending on the previous char"
self.arcs = collections.OrderedDict(sorted(self.arcs.items(), key=lambda t: dValOccur.get(lArcVal[t[0]], 0), reverse=True))
# VERSION 1 =====================================================================================================
def convToBytes (self, nBytesArc, nBytesNodeAddress):
"""
Convert to bytes (method 1).
Node scheme:
- Arc length is defined by nBytesArc
- Address length is defined by nBytesNodeAddress
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val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
by += val.to_bytes(nBytesArc, byteorder='big')
by += self.arcs[arc].addr.to_bytes(nBytesNodeAddress, byteorder='big')
return by
def getTxtRepr1 (self, nBytesArc, lVal):
"return representation as string of node (method 1)"
nArc = len(self.arcs)
nFinalNodeMask = 1 << ((nBytesArc*8)-1)
nFinalArcMask = 1 << ((nBytesArc*8)-2)
s = "i{:_>10} -- #{:_>10}\n".format(self.i, self.addr)
if not nArc:
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format("", bin(nFinalNodeMask | nFinalArcMask)[2:], "0", "0")
return s
for i, arc in enumerate(self.arcs, 1):
val = arc
if i == 1 and self.final:
val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format(lVal[arc], bin(val)[2:], self.arcs[arc].i, self.arcs[arc].addr)
return s
# VERSION 2 =====================================================================================================
def convToBytes2 (self, nBytesArc, nBytesNodeAddress):
"""
Convert to bytes (method 2).
Node scheme:
- Arc length is defined by nBytesArc
- Address length is defined by nBytesNodeAddress
| Arc | Address of next node |
| | |
┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓
┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃
┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛
[...]
┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓
┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃
┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛
^ ^ ^
┃ ┃ ┃
┃ ┃ ┗━━ if 1, caution, no address: next node is the following node
┃ ┗━━━━ if 1, last arc of this node
┗━━━━━━ if 1, this node is final (only on the first arc)
"""
nArc = len(self.arcs)
nFinalNodeMask = 1 << ((nBytesArc*8)-1)
nFinalArcMask = 1 << ((nBytesArc*8)-2)
nNextNodeMask = 1 << ((nBytesArc*8)-3)
if not nArc:
val = nFinalNodeMask | nFinalArcMask
by = val.to_bytes(nBytesArc, byteorder='big')
by += (0).to_bytes(nBytesNodeAddress, byteorder='big')
return by
by = b""
for i, arc in enumerate(self.arcs, 1):
val = arc
if i == 1 and self.final:
val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
if (self.pos + 1) == self.arcs[arc].pos and self.i != 0:
val = val | nNextNodeMask
by += val.to_bytes(nBytesArc, byteorder='big')
else:
by += val.to_bytes(nBytesArc, byteorder='big')
by += self.arcs[arc].addr.to_bytes(nBytesNodeAddress, byteorder='big')
return by
def getTxtRepr2 (self, nBytesArc, lVal):
"return representation as string of node (method 2)"
nArc = len(self.arcs)
nFinalNodeMask = 1 << ((nBytesArc*8)-1)
nFinalArcMask = 1 << ((nBytesArc*8)-2)
nNextNodeMask = 1 << ((nBytesArc*8)-3)
s = "i{:_>10} -- #{:_>10}\n".format(self.i, self.addr)
if not nArc:
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format("", bin(nFinalNodeMask | nFinalArcMask)[2:], "0", "0")
return s
for i, arc in enumerate(self.arcs, 1):
val = arc
if i == 1 and self.final:
val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
if (self.pos + 1) == self.arcs[arc].pos and self.i != 0:
val = val | nNextNodeMask
s += " {:<20} {:0>16}\n".format(lVal[arc], bin(val)[2:])
else:
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format(lVal[arc], bin(val)[2:], self.arcs[arc].i, self.arcs[arc].addr)
return s
# VERSION 3 =====================================================================================================
def convToBytes3 (self, nBytesArc, nBytesNodeAddress, nBytesOffset):
"""
Convert to bytes (method 3).
Node scheme:
- Arc length is defined by nBytesArc
- Address length is defined by nBytesNodeAddress
- Offset length is defined by nBytesOffset
| Arc | Address of next node or offset to next node |
| | |
┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓
┃1┃0┃0┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃
┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛
[...]
┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓
┃0┃0┃1┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ Offsets are shorter than addresses
┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛
┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━━━┓
┃0┃1┃0┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃
┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━━━┛
^ ^ ^
┃ ┃ ┃
┃ ┃ ┗━━ if 1, offset instead of address of next node
┃ ┗━━━━ if 1, last arc of this node
┗━━━━━━ if 1, this node is final (only on the first arc)
"""
nArc = len(self.arcs)
nFinalNodeMask = 1 << ((nBytesArc*8)-1)
nFinalArcMask = 1 << ((nBytesArc*8)-2)
nNextNodeMask = 1 << ((nBytesArc*8)-3)
nMaxOffset = (2 ** (nBytesOffset * 8)) - 1
if not nArc:
val = nFinalNodeMask | nFinalArcMask
by = val.to_bytes(nBytesArc, byteorder='big')
by += (0).to_bytes(nBytesNodeAddress, byteorder='big')
return by
by = b""
for i, arc in enumerate(self.arcs, 1):
val = arc
if i == 1 and self.final:
val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
if 1 < (self.arcs[arc].addr - self.addr) < nMaxOffset and self.i != 0:
val = val | nNextNodeMask
by += val.to_bytes(nBytesArc, byteorder='big')
by += (self.arcs[arc].addr-self.addr).to_bytes(nBytesOffset, byteorder='big')
else:
by += val.to_bytes(nBytesArc, byteorder='big')
by += self.arcs[arc].addr.to_bytes(nBytesNodeAddress, byteorder='big')
return by
def getTxtRepr3 (self, nBytesArc, nBytesOffset, lVal):
"return representation as string of node (method 3)"
nArc = len(self.arcs)
nFinalNodeMask = 1 << ((nBytesArc*8)-1)
nFinalArcMask = 1 << ((nBytesArc*8)-2)
nNextNodeMask = 1 << ((nBytesArc*8)-3)
nMaxOffset = (2 ** (nBytesOffset * 8)) - 1
s = "i{:_>10} -- #{:_>10} ({})\n".format(self.i, self.addr, self.size)
if not nArc:
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format("", bin(nFinalNodeMask | nFinalArcMask)[2:], "0", "0")
return s
for i, arc in enumerate(self.arcs, 1):
val = arc
if i == 1 and self.final:
val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
if 1 < (self.arcs[arc].addr - self.addr) < nMaxOffset and self.i != 0:
val = val | nNextNodeMask
s += " {:<20} {:0>16} i{:_>10} +{:_>10}\n".format(lVal[arc], bin(val)[2:], self.arcs[arc].i, self.arcs[arc].addr - self.addr)
else:
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format(lVal[arc], bin(val)[2:], self.arcs[arc].i, self.arcs[arc].addr)
return s
# Another attempt to sort node arcs
_dCharOrder = {
# key: previous char, value: dictionary of chars {c: nValue}
"": {}
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val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
by += val.to_bytes(nBytesArc, byteorder='big')
by += self.arcs[arc].addr.to_bytes(nBytesNodeAddress, byteorder='big')
return by
def getTxtRepr (self, nBytesArc, lVal):
"return representation as string of node (method 1)"
nArc = len(self.arcs)
nFinalNodeMask = 1 << ((nBytesArc*8)-1)
nFinalArcMask = 1 << ((nBytesArc*8)-2)
s = "i{:_>10} -- #{:_>10}\n".format(self.i, self.addr)
if not nArc:
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format("", bin(nFinalNodeMask | nFinalArcMask)[2:], "0", "0")
return s
for i, arc in enumerate(self.arcs, 1):
val = arc
if i == 1 and self.final:
val = val | nFinalNodeMask
if i == nArc:
val = val | nFinalArcMask
s += " {:<20} {:0>16} i{:_>10} #{:_>10}\n".format(lVal[arc], bin(val)[2:], self.arcs[arc].i, self.arcs[arc].addr)
return s
# Another attempt to sort node arcs
_dCharOrder = {
# key: previous char, value: dictionary of chars {c: nValue}
"": {}
|