Jak mogę przekonwertować tekst na przypadek Pascala?

Question

mam nazwę zmiennej, powiedzmy "WARD_VS_VITAL_SIGNS" i chcę, aby przekonwertować go do formatu Pascal przypadek: "WardVsVitalSigns"

WARD_VS_VITAL_SIGNS -> WardVsVitalSigns 

Jak mogę dokonać tej przemiany?

Answer 1

Po pierwsze, pytasz o tytuł, a nie wielbłądy, ponieważ w przypadku wielbłąda pierwsza litera tego słowa jest mała, a twój przykład pokazuje, że pierwsza litera ma być wielka.

W każdym razie, oto jak można osiągnąć pożądany rezultat:

string textToChange = "WARD_VS_VITAL_SIGNS"; 
System.Text.StringBuilder resultBuilder = new System.Text.StringBuilder(); 

foreach(char c in textToChange) 
{ 
    // Replace anything, but letters and digits, with space 
    if(!Char.IsLetterOrDigit(c)) 
    { 
     resultBuilder.Append(" "); 
    } 
    else 
    { 
     resultBuilder.Append(c); 
    } 
} 

string result = resultBuilder.ToString(); 

// Make result string all lowercase, because ToTitleCase does not change all uppercase correctly 
result = result.ToLower(); 

// Creates a TextInfo based on the "en-US" culture. 
TextInfo myTI = new CultureInfo("en-US",false).TextInfo; 

result = myTI.ToTitleCase(result).Replace(" ", String.Empty); 

Uwaga: result jest teraz WardVsVitalSigns.

Jeśli nie, w rzeczywistości chcą wielbłądziej, wówczas po wszystkich wyżej wymienionych, wystarczy użyć tej funkcji pomocnika:

public string LowercaseFirst(string s) 
{ 
    if (string.IsNullOrEmpty(s)) 
    { 
     return string.Empty; 
    } 

    char[] a = s.ToCharArray(); 
    a[0] = char.ToLower(a[0]); 

    return new string(a); 
} 

Więc można to nazwać, tak:

result = LowercaseFirst(result); 

Answer 2

Nie potrzebujesz do tego regularnego wyrażenia.

var yourString = "WARD_VS_VITAL_SIGNS".ToLower().Replace("_", " "); 
TextInfo info = CultureInfo.CurrentCulture.TextInfo; 
yourString = info.ToTitleCase(yourString).Replace(" ", string.Empty); 
Console.WriteLine(yourString); 

można zmodyfikować kod, jak chcesz.

Answer 3

var xs = "WARD_VS_VITAL_SIGNS".Split('_'); 

var q = 

    from x in xs 

    let first_char = char.ToUpper(x[0]) 
    let rest_chars = new string(x.Skip(1).Select(c => char.ToLower(c)).ToArray()) 

    select first_char + rest_chars; 

Answer 4

metodę rozszerzenia dla System.String z kodem zgodnym NET rdzenia za pomocą System i System.Linq.

Czy nie modyfikować oryginalny ciąg.

.NET Fiddle for the code below

using System; 
using System.Linq; 

public static class StringExtensions 
{ 
    /// <summary> 
    /// Converts a string to PascalCase 
    /// </summary> 
    /// <param name="str">String to convert</param> 

    public static string ToPascalCase(this string str){ 

     // Replace all non-letter and non-digits with an underscore and lowercase the rest. 
     string sample = string.Join("", str?.Select(c => Char.IsLetterOrDigit(c) ? c.ToString().ToLower() : "_").ToArray()); 

     // Split the resulting string by underscore 
     // Select first character, uppercase it and concatenate with the rest of the string 
     var arr = sample? 
      .Split(new []{'_'}, StringSplitOptions.RemoveEmptyEntries) 
      .Select(s => $"{s.Substring(0, 1).ToUpper()}{s.Substring(1)}"); 

     // Join the resulting collection 
     sample = string.Join("", arr); 

     return sample; 
    } 
} 

public class Program 
{ 
    public static void Main() 
    { 
     Console.WriteLine("WARD_VS_VITAL_SIGNS".ToPascalCase()); // WardVsVitalSigns 
     Console.WriteLine("Who am I?".ToPascalCase()); // WhoAmI 
     Console.WriteLine("I ate before you got here".ToPascalCase()); // IAteBeforeYouGotHere 
     Console.WriteLine("Hello|Who|Am|I?".ToPascalCase()); // HelloWhoAmI 
     Console.WriteLine("Live long and prosper".ToPascalCase()); // LiveLongAndProsper 
     Console.WriteLine("Lorem ipsum dolor sit amet, consectetur adipiscing elit.".ToPascalCase()); // LoremIpsumDolorSitAmetConsecteturAdipiscingElit 
    } 
} 

Answer 5

Jedno rozwiązanie średnik:

public static string PascalCase(this string word) 
{ 
    return string.Join(" " , word.Split(' ') 
       .Select(w => w.Trim()) 
       .Where(w => w.Length > 0) 
       .Select(w => w.Substring(0,1).ToUpper() + w.Substring(1).ToLower())); 
} 

Answer 6

Oto moja szybkie LINQ & regex rozwiązanie uratować czyjeś czas:

using System; 
using System.Linq; 
using System.Text.RegularExpressions; 

public string ToPascalCase(string original) 
{ 
    Regex invalidCharsRgx = new Regex("[^_a-zA-Z0-9]"); 
    Regex whiteSpace = new Regex(@"(?<=\s)"); 
    Regex startsWithLowerCaseChar = new Regex("^[a-z]"); 
    Regex firstCharFollowedByUpperCasesOnly = new Regex("(?<=[A-Z])[A-Z0-9]+$"); 
    Regex lowerCaseNextToNumber = new Regex("(?<=[0-9])[a-z]"); 
    Regex upperCaseInside = new Regex("(?<=[A-Z])[A-Z]+?((?=[A-Z][a-z])|(?=[0-9]))"); 

    // replace white spaces with undescore, then replace all invalid chars with empty string 
    var pascalCase = invalidCharsRgx.Replace(whiteSpace.Replace(original, "_"), string.Empty) 
     // split by underscores 
     .Split(new char[] { '_' }, StringSplitOptions.RemoveEmptyEntries) 
     // set first letter to uppercase 
     .Select(w => startsWithLowerCaseChar.Replace(w, m => m.Value.ToUpper())) 
     // replace second and all following upper case letters to lower if there is no next lower (ABC -> Abc) 
     .Select(w => firstCharFollowedByUpperCasesOnly.Replace(w, m => m.Value.ToLower())) 
     // set upper case the first lower case following a number (Ab9cd -> Ab9Cd) 
     .Select(w => lowerCaseNextToNumber.Replace(w, m => m.Value.ToUpper())) 
     // lower second and next upper case letters except the last if it follows by any lower (ABcDEf -> AbcDef) 
     .Select(w => upperCaseInside.Replace(w, m => m.Value.ToLower())); 

    return string.Concat(pascalCase); 
} 

Przykâadowa:

"WARD_VS_VITAL_SIGNS"   "WardVsVitalSigns" 
"Who am I?"     "WhoAmI" 
"I ate before you got here" "IAteBeforeYouGotHere" 
"Hello|Who|Am|I?"    "HelloWhoAmI" 
"Live long and prosper"  "LiveLongAndProsper" 
"Lorem ipsum dolor..."   "LoremIpsumDolor" 
"CoolSP"      "CoolSp" 
"AB9CD"      "Ab9Cd" 
"CCCTrigger"     "CccTrigger" 
"CIRC"       "Circ" 
"ID_SOME"      "IdSome" 
"ID_SomeOther"     "IdSomeOther" 
"ID_SOMEOther"     "IdSomeOther" 
"CCC_SOME_2Phases"    "CccSome2Phases" 
"AlreadyGoodPascalCase"  "AlreadyGoodPascalCase" 
"999 999 99 9 "    "999999999" 
"1 2 3 "      "123" 
"1 AB cd EFDDD 8"    "1AbCdEfddd8" 
"INVALID VALUE AND _2THINGS" "InvalidValueAnd2Things"