コード例 #1
0
        private static Dictionary <char, BDD> ComputeIgnoreCaseDistionary(CharSetSolver solver)
        {
            var ignoreCase = new Dictionary <char, BDD>();

            for (uint i = 0; i <= 0xFFFF; i++)
            {
                char c  = (char)i;
                char cU = char.ToUpper(c); // (char.IsLetter(char.ToUpper(c)) ? char.ToUpper(c) : c);
                char cL = char.ToLower(c); // (char.IsLetter(char.ToLower(c)) ? char.ToLower(c) : c);
                if (c != cU || c != cL || cU != cL)
                {
                    //make sure that the regex engine considers c as being equivalent to cU and cL, else ignore c
                    //in some cases c != cU but the regex engine does not consider the chacarters equivalent wrt the ignore-case option.
                    //These characters are:
                    //c=\xB5,cU=\u039C
                    //c=\u0131,cU=I
                    //c=\u017F,cU=S
                    //c=\u0345,cU=\u0399
                    //c=\u03C2,cU=\u03A3
                    //c=\u03D0,cU=\u0392
                    //c=\u03D1,cU=\u0398
                    //c=\u03D5,cU=\u03A6
                    //c=\u03D6,cU=\u03A0
                    //c=\u03F0,cU=\u039A
                    //c=\u03F1,cU=\u03A1
                    //c=\u03F5,cU=\u0395
                    //c=\u1E9B,cU=\u1E60
                    //c=\u1FBE,cU=\u0399
                    if (System.Text.RegularExpressions.Regex.IsMatch(cU.ToString() + cL.ToString(), "^(?i:" + StringUtility.Escape(c) + ")+$"))
                    {
                        BDD equiv = solver.False;

                        if (ignoreCase.ContainsKey(c))
                        {
                            equiv = equiv | ignoreCase[c];
                        }
                        if (ignoreCase.ContainsKey(cU))
                        {
                            equiv = equiv | ignoreCase[cU];
                        }
                        if (ignoreCase.ContainsKey(cL))
                        {
                            equiv = equiv | ignoreCase[cL];
                        }

                        equiv = equiv | solver.MkCharSetFromRange(c, c) | solver.MkCharSetFromRange(cU, cU) | solver.MkCharSetFromRange(cL, cL);

                        foreach (char d in solver.GenerateAllCharacters(equiv))
                        {
                            ignoreCase[d] = equiv;
                        }
                    }
                    //else
                    //{
                    //    outp += "c=" + StringUtility.Escape(c) + "," + "cU=" + StringUtility.Escape(cU);
                    //    Console.WriteLine("c=" + StringUtility.Escape(c) + "," + "cL=" + StringUtility.Escape(cL) + "," + "cU=" + StringUtility.Escape(cU));
                    //}
                }
            }
            return(ignoreCase);
        }