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namespace ConsoleApplication1
{
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
public class Program
{
#region Fields
private const char CrossSymbol = '+';
private const char HorizontalSeparatorSymbol = '-';
private const int IterationCount = 200000;
private const string MethodHeader = "Method";
private const string PerformanceFormat = "#,##0.00";
private const string PerformanceHeader = "Perf";
private const string RemoveDiacriticsCharReplaceMethodName = "RemoveDiacriticsCharReplace";
private const string RemoveDiacriticsNormalizationDotNet2MethodName = "RemoveDiacriticsNormalizationDotNet2";
private const string RemoveDiacriticsRegexMethodName = "RemoveDiacriticsRegex";
private const string RemoveDiacriticsStringReplaceMethodName = "RemoveDiacriticsStringReplace";
private const string RemoveDiacriticsTrickMethodName = "RemoveDiacriticsTrick";
private const char SpaceSymbol = ' ';
private const string TestString = "à la claîre fontaîne l'élève à fait de grâve erreur où pas ?";
private const string TimeHeader = "Time";
private const char VerticalSeparatorSymbol = '|';
#endregion Fields
#region Properties
private static Dictionary<string, string> Chars
{
get;
set;
}
private static Regex Regex
{
get;
set;
}
#endregion Properties
#region Methods
public static void Main(string[] args)
{
Init();
var oMethodsToTest = new List<Pair<Func<string, string>, string>>();
oMethodsToTest.Add(new Pair<Func<string, string>, string>(RemoveDiacriticsRegex, RemoveDiacriticsRegexMethodName));
oMethodsToTest.Add(new Pair<Func<string, string>, string>(RemoveDiacriticsNormalizationDotNet2, RemoveDiacriticsNormalizationDotNet2MethodName));
oMethodsToTest.Add(new Pair<Func<string, string>, string>(RemoveDiacriticsStringReplace, RemoveDiacriticsStringReplaceMethodName));
oMethodsToTest.Add(new Pair<Func<string, string>, string>(RemoveDiacriticsCharReplace, RemoveDiacriticsCharReplaceMethodName));
oMethodsToTest.Add(new Pair<Func<string, string>, string>(RemoveDiacriticsTrick, RemoveDiacriticsTrickMethodName));
var oResults = oMethodsToTest
.Select(x => new Pair<TimeSpan, string>(TestMethod(x.Fst), x.Snd))
.OrderBy(x => x.Fst)
.ToArray();
var oBest = oResults.First().Fst;
var sTable = new string[oResults.Length + 1][];
for (var i = 0; i < sTable.Length; i++)
{
sTable[i] = new string[3];
}
sTable[0][0] = MethodHeader;
sTable[0][1] = TimeHeader;
sTable[0][2] = PerformanceHeader;
for (var i = 0; i < oResults.Length; i++)
{
sTable[i + 1][0] = oResults[i].Snd;
sTable[i + 1][1] = oResults[i].Fst.ToString();
var fGap = (double)oResults[i].Fst.Ticks / (double)oBest.Ticks;
sTable[i + 1][2] = fGap.ToString(PerformanceFormat);
}
WriteTable(sTable);
System.Console.ReadLine();
}
private static void Init()
{
Chars = new Dictionary<string, string>();
Chars["c"] = "c";
Chars["à"] = "a";
Chars["á"] = "a";
Chars["ä"] = "a";
Chars["â"] = "a";
Chars["ã"] = "a";
Chars["å"] = "a";
Chars["é"] = "e";
Chars["è"] = "e";
Chars["ê"] = "e";
Chars["ë"] = "e";
Chars["ì"] = "i";
Chars["í"] = "i";
Chars["ï"] = "i";
Chars["î"] = "i";
Chars["ò"] = "o";
Chars["ó"] = "o";
Chars["ô"] = "o";
Chars["ö"] = "o";
Chars["û"] = "u";
Chars["ü"] = "u";
Chars["ù"] = "u";
Chars["ú"] = "u";
Chars["ý"] = "y";
Chars["ÿ"] = "y";
Chars["ç"] = "c";
Chars["ñ"] = "n";
var sPattern = string.Join(VerticalSeparatorSymbol.ToString(), Chars.Keys.Select(x => x.ToString()).ToArray());
Regex = new System.Text.RegularExpressions.Regex(sPattern, RegexOptions.Compiled);
}
private static string RemoveDiacriticsCharReplace(string inputString)
{
string result;
StringBuilder builder = new StringBuilder();
char[] car = inputString.ToCharArray();
foreach (char c in car)
{
if (c == 'ä' || c == 'á' || c == 'à' || c == 'â' || c == 'ã' || c == 'å')
builder.Append('a');
else if (c == 'é' || c == 'è' || c == 'ê' || c == 'ë')
builder.Append('e');
else if (c == 'ì' || c == 'í' || c == 'ï' || c == 'î')
builder.Append('i');
else if (c == 'ò' || c == 'ó' || c == 'ô' || c == 'ö')
builder.Append('o');
else if (c == 'ù' || c == 'ú' || c == 'ü' || c == 'û')
builder.Append('u');
else if (c == 'ÿ' || c == 'ý')
builder.Append('y');
else if (c == 'ç')
builder.Append('c');
else if (c == 'ñ')
builder.Append('n');
else builder.Append(c);
}
result = builder.ToString();
return result;
}
private static string RemoveDiacriticsNormalizationDotNet2(string inputString)
{
string result = inputString;
string normalizedString = result.Normalize(NormalizationForm.FormD);
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < normalizedString.Length; i++)
{
char c = normalizedString[i];
if (CharUnicodeInfo.GetUnicodeCategory(c) != UnicodeCategory.NonSpacingMark)
stringBuilder.Append(c);
}
result = stringBuilder.ToString();
return result;
}
private static string RemoveDiacriticsRegex(string inputString)
{
return Regex.Replace(inputString, ReplaceMatch);
}
private static string RemoveDiacriticsStringReplace(string inputString)
{
string result = inputString;
result = result.Replace('à', 'a');
result = result.Replace('á', 'a');
result = result.Replace('ä', 'a');
result = result.Replace('â', 'a');
result = result.Replace('ã', 'a');
result = result.Replace('å', 'a');
result = result.Replace('é', 'e');
result = result.Replace('è', 'e');
result = result.Replace('ê', 'e');
result = result.Replace('ë', 'e');
result = result.Replace('ì', 'i');
result = result.Replace('í', 'i');
result = result.Replace('ï', 'i');
result = result.Replace('î', 'i');
result = result.Replace('ò', 'o');
result = result.Replace('ó', 'o');
result = result.Replace('ô', 'o');
result = result.Replace('ö', 'o');
result = result.Replace('û', 'u');
result = result.Replace('ü', 'u');
result = result.Replace('ù', 'u');
result = result.Replace('ú', 'u');
result = result.Replace('ý', 'y');
result = result.Replace('ÿ', 'y');
result = result.Replace('ç', 'c');
result = result.Replace('ñ', 'n');
return result;
}
private static string RemoveDiacriticsTrick(string inputString)
{
byte[] tab = System.Text.Encoding.GetEncoding(1251).GetBytes(inputString);
string result = System.Text.Encoding.ASCII.GetString(tab);
return result;
}
private static string ReplaceMatch(Match match)
{
return Chars[match.Value];
}
private static TimeSpan TestMethod(Func<string, string> method)
{
var oStart = DateTime.Now;
var sStr = TestString;
for (var i = 0; i < IterationCount; i++)
{
method(sStr);
}
var oStop = DateTime.Now;
return oStop - oStart;
}
private static void WriteTable(string[][] values)
{
var iRows = values.Length;
var iCols = values[0].Length;
var iColumnsWidth = new int[iCols];
for (var j = 0; j < iCols; j++)
{
iColumnsWidth[j] = 0;
}
for (var j = 0; j < iCols; j++)
{
for (var i = 0; i < iRows; i++)
{
iColumnsWidth[j] = Math.Max(iColumnsWidth[j], values[i][j].Length);
}
}
for (var i = 0; i < iRows; i++)
{
if (i == 1)
{
for (var j = 0; j < iCols; j++)
{
if (j >= 1)
{
System.Console.Write(CrossSymbol);
}
System.Console.Write(new string(HorizontalSeparatorSymbol, iColumnsWidth[j] + 2));
}
System.Console.WriteLine();
}
for (var j = 0; j < iCols; j++)
{
if (j >= 1)
{
System.Console.Write(VerticalSeparatorSymbol);
}
System.Console.Write(SpaceSymbol);
System.Console.Write(values[i][j]);
System.Console.Write(new string(' ', iColumnsWidth[j] - values[i][j].Length + 1));
}
System.Console.WriteLine();
}
}
#endregion Methods
}
} |
Performance des Regex en .NET
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Envoyé par Eric80
mais j'ai la fleme d'écrire le code (re 
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