Added simple spell chacking using difflib

nw/tools/__init__.py

@@ -4,6 +4,7 @@ from nw.tools.analyse import TextAnalysis
 from nw.tools.optlaststate import OptLastState
 from nw.tools.spellcheck import NWSpellCheck
 from nw.tools.spellenchant import NWSpellEnchant
+from nw.tools.spellsimple import NWSpellSimple
 from nw.tools.translate import numberToWord
 from nw.tools.wordcount import countWords
 
@@ -12,6 +13,7 @@ __all__ = [
     "OptLastState",
     "NWSpellCheck",
     "NWSpellEnchant",
+    "NWSpellSimple",
     "numberToWord",
     "countWords",
 ]

nw/tools/spellsimple.py

@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+"""novelWriter Spell Check Simple
+
+ novelWriter – Spell Check Simple
+==================================
+ Simple Python3 spell checker based on difflib
+
+ File History:
+ Created: 2019-06-11 [0.1.5]
+
+"""
+
+import logging
+import nw
+
+from os import path
+from collections import Counter
+from difflib import get_close_matches
+
+logger = logging.getLogger(__name__)
+
+from nw.tools.spellcheck import NWSpellCheck
+
+class NWSpellSimple(NWSpellCheck):
+
+    WORDS = []
+
+    def __init__(self):
+        NWSpellCheck.__init__(self)
+        self.mainConf = nw.CONFIG
+        logger.debug("Norvig spell checking activated")
+        return
+
+    def setLanguage(self, theLang, projectDict=None):
+        dictFile = path.join(self.mainConf.dictPath,theLang+".dict")
+        try:
+            with open(dictFile,mode="r",encoding="utf-8") as wordsFile:
+                for theLine in wordsFile:
+                    if len(theLine) == 0 or theLine.startswith("#"):
+                        continue
+                    self.WORDS.append(theLine.strip().lower())
+            logger.debug("Spell check word list for language %s loaded" % theLang)
+            logger.debug("Word list contains %d words" % len(self.WORDS))
+        except Exception as e:
+            logger.error("Failed to load spell check word list for language %s" % theLang)
+            logger.error(str(e))
+        return
+
+    def checkWord(self, theWord):
+        theWord = theWord.replace(self.mainConf.fmtSingleQuotes[1],"'").lower()
+        return theWord in self.WORDS
+
+    def suggestWords(self, theWord):
+        return get_close_matches(theWord.lower(), self.WORDS, n=10, cutoff=0.60)
+
+    def addWord(self, newWord):
+        return
+
+    def listDictionaries(self):
+        return ["default"]
+
+# END Class NWSpellSimple