StringInfo.ParseCombiningCharacters(String) StringInfo.ParseCombiningCharacters(String) StringInfo.ParseCombiningCharacters(String) StringInfo.ParseCombiningCharacters(String) Method

Definice

Vrátí indexy každého základního znaku, vysoké náhrady nebo řídicího znaku v rámci zadaného řetězce.Returns the indexes of each base character, high surrogate, or control character within the specified string.

public:
 static cli::array <int> ^ ParseCombiningCharacters(System::String ^ str);
public static int[] ParseCombiningCharacters (string str);
static member ParseCombiningCharacters : string -> int[]
Public Shared Function ParseCombiningCharacters (str As String) As Integer()

Parametry

str
String String String String

Řetězec, který chcete vyhledat.The string to search.

Návraty

Int32[]

Pole celých čísel, která obsahují indexy založené na nule každého základního znaku, vysoké náhrady nebo řídicí znak v rámci zadaného řetězce.An array of integers that contains the zero-based indexes of each base character, high surrogate, or control character within the specified string.

Výjimky

Příklady

Následující příklad ukazuje volání ParseCombiningCharacters metody.The following example demonstrates calling the ParseCombiningCharacters method. Tento příklad kódu je součástí většího příkladu, který StringInfo je k dispozici pro třídu.This code example is part of a larger example provided for the StringInfo class.

using namespace System;
using namespace System::Text;
using namespace System::Globalization;


// Show how to enumerate each real character (honoring surrogates)
// in a string.

void EnumTextElements(String^ combiningChars)
{
    // This StringBuilder holds the output results.
    StringBuilder^ sb = gcnew StringBuilder();

    // Use the enumerator returned from GetTextElementEnumerator
    // method to examine each real character.
    TextElementEnumerator^ charEnum =
        StringInfo::GetTextElementEnumerator(combiningChars);
    while (charEnum->MoveNext())
    {
        sb->AppendFormat("Character at index {0} is '{1}'{2}", 
            charEnum->ElementIndex, charEnum->GetTextElement(), 
            Environment::NewLine);
    }

    // Show the results.
    Console::WriteLine("Result of GetTextElementEnumerator:");
    Console::WriteLine(sb);
}


// Show how to discover the index of each real character
// (honoring surrogates) in a string.

void EnumTextElementIndexes(String^ combiningChars)
{
    // This StringBuilder holds the output results.
    StringBuilder^ sb = gcnew StringBuilder();

    // Use the ParseCombiningCharacters method to
    // get the index of each real character in the string.
    array <int>^ textElemIndex =
        StringInfo::ParseCombiningCharacters(combiningChars);

    // Iterate through each real character showing the character
    // and the index where it was found.
    for (int i = 0; i < textElemIndex->Length; i++)
    {
        sb->AppendFormat("Character {0} starts at index {1}{2}",
            i, textElemIndex[i], Environment::NewLine);
    }

    // Show the results.
    Console::WriteLine("Result of ParseCombiningCharacters:");
    Console::WriteLine(sb);
}

int main()
{

    // The string below contains combining characters.
    String^ combiningChars = L"a\u0304\u0308bc\u0327";

    // Show each 'character' in the string.
    EnumTextElements(combiningChars);

    // Show the index in the string where each 'character' starts.
    EnumTextElementIndexes(combiningChars);

};

// This code produces the following output.
//
// Result of GetTextElementEnumerator:
// Character at index 0 is 'a-"'
// Character at index 3 is 'b'
// Character at index 4 is 'c,'
//
// Result of ParseCombiningCharacters:
// Character 0 starts at index 0
// Character 1 starts at index 3
// Character 2 starts at index 4
using System;
using System.Text;
using System.Globalization;

public sealed class App {
   static void Main() {
      // The string below contains combining characters.
      String s = "a\u0304\u0308bc\u0327";

      // Show each 'character' in the string.
      EnumTextElements(s);

      // Show the index in the string where each 'character' starts.
      EnumTextElementIndexes(s);
   }

   // Show how to enumerate each real character (honoring surrogates) in a string.
   static void EnumTextElements(String s) {
      // This StringBuilder holds the output results.
      StringBuilder sb = new StringBuilder();

      // Use the enumerator returned from GetTextElementEnumerator 
      // method to examine each real character.
      TextElementEnumerator charEnum = StringInfo.GetTextElementEnumerator(s);
      while (charEnum.MoveNext()) {
         sb.AppendFormat(
           "Character at index {0} is '{1}'{2}",
           charEnum.ElementIndex, charEnum.GetTextElement(),
           Environment.NewLine);
      }

      // Show the results.
      Console.WriteLine("Result of GetTextElementEnumerator:");
      Console.WriteLine(sb);
   }

   // Show how to discover the index of each real character (honoring surrogates) in a string.
   static void EnumTextElementIndexes(String s) {
      // This StringBuilder holds the output results.
      StringBuilder sb = new StringBuilder();

      // Use the ParseCombiningCharacters method to 
      // get the index of each real character in the string.
      Int32[] textElemIndex = StringInfo.ParseCombiningCharacters(s);

      // Iterate through each real character showing the character and the index where it was found.
      for (Int32 i = 0; i < textElemIndex.Length; i++) {
         sb.AppendFormat(
            "Character {0} starts at index {1}{2}",
            i, textElemIndex[i], Environment.NewLine);
      }

      // Show the results.
      Console.WriteLine("Result of ParseCombiningCharacters:");
      Console.WriteLine(sb);
   }
}

// This code produces the following output.
//
// Result of GetTextElementEnumerator:
// Character at index 0 is 'a-"'
// Character at index 3 is 'b'
// Character at index 4 is 'c,'
// 
// Result of ParseCombiningCharacters:
// Character 0 starts at index 0
// Character 1 starts at index 3
// Character 2 starts at index 4
Imports System.Text
Imports System.Globalization

Public Module Example
   Public Sub Main()
      ' The string below contains combining characters.
      Dim s As String = "a" + ChrW(&h0304) + ChrW(&h0308) + "bc" + ChrW(&h0327)

      ' Show each 'character' in the string.
      EnumTextElements(s)

      ' Show the index in the string where each 'character' starts.
      EnumTextElementIndexes(s)
   End Sub

   ' Show how to enumerate each real character (honoring surrogates) in a string.
   Sub EnumTextElements(s As String)
      ' This StringBuilder holds the output results.
      Dim sb As New StringBuilder()

      ' Use the enumerator returned from GetTextElementEnumerator 
      ' method to examine each real character.
      Dim charEnum As TextElementEnumerator = StringInfo.GetTextElementEnumerator(s)
      Do While charEnum.MoveNext()
         sb.AppendFormat("Character at index {0} is '{1}'{2}",
                         charEnum.ElementIndex, 
                         charEnum.GetTextElement(),
                         Environment.NewLine)
      Loop

      ' Show the results.
      Console.WriteLine("Result of GetTextElementEnumerator:")
      Console.WriteLine(sb)
   End Sub

   ' Show how to discover the index of each real character (honoring surrogates) in a string.
   Sub EnumTextElementIndexes(s As String)
      ' This StringBuilder holds the output results.
      Dim sb As New StringBuilder()

      ' Use the ParseCombiningCharacters method to 
      ' get the index of each real character in the string.
      Dim textElemIndex() As Integer = StringInfo.ParseCombiningCharacters(s)

      ' Iterate through each real character showing the character and the index where it was found.
      For i As Int32 = 0 To textElemIndex.Length - 1
         sb.AppendFormat("Character {0} starts at index {1}{2}",
                         i, textElemIndex(i), Environment.NewLine)
      Next

      ' Show the results.
      Console.WriteLine("Result of ParseCombiningCharacters:")
      Console.WriteLine(sb)
   End Sub
End Module
' The example displays the following output:
'       Result of GetTextElementEnumerator:
'       Character at index 0 is 'a-"'
'       Character at index 3 is 'b'
'       Character at index 4 is 'c,'
'       
'       Result of ParseCombiningCharacters:
'       Character 0 starts at index 0
'       Character 1 starts at index 3
'       Character 2 starts at index 4

Poznámky

Standard Unicode definuje náhradní pár jako reprezentaci kódovaného znaku pro jeden abstraktní znak, který se skládá z sekvence dvou kódových jednotek, kde první jednotka dvojice je vysoká náhrada a druhá je nízká náhrada.The Unicode Standard defines a surrogate pair as a coded character representation for a single abstract character that consists of a sequence of two code units, where the first unit of the pair is a high surrogate and the second is a low surrogate. Vysoká náhrada je bod kódu Unicode v rozsahu U + D800 až U + DBFF a Nízká náhrada je bod kódu Unicode v rozsahu U + DC00 až U + DFFF.A high surrogate is a Unicode code point in the range U+D800 through U+DBFF and a low surrogate is a Unicode code point in the range U+DC00 through U+DFFF.

Řídicí znak je znak, pro který je hodnota sady Unicode U + 007F nebo v rozsahu U + 0000 až u + 001F nebo U + 0080 až U + 009F.A control character is a character for which the Unicode value is U+007F or in the range U+0000 through U+001F or U+0080 through U+009F.

Rozhraní .NET definuje textový prvek jako jednotku textu, která se zobrazuje jako jeden znak, tj. grapheme..NET defines a text element as a unit of text that is displayed as a single character, that is, a grapheme. Textový prvek může být základní znak, náhradní pár nebo posloupnost znaků s diakritikou.A text element can be a base character, a surrogate pair, or a combining character sequence. Standard Unicode definuje posloupnost znaků kombinování jako kombinaci základního znaku a jednoho nebo více kombinací znaků.The Unicode Standard defines a combining character sequence as a combination of a base character and one or more combining characters. Náhradní pár může představovat základní znak nebo znak diakritického znaménka.A surrogate pair can represent a base character or a combining character.

Pokud je posloupnost znaků kombinování neplatná, vrátí se také všechny kombinace znaků v této sekvenci.If a combining character sequence is invalid, every combining character in that sequence is also returned.

Každý index ve výsledném poli je začátek textového prvku, to znamená index základního znaku nebo vysoké náhrady.Each index in the resulting array is the beginning of a text element, that is, the index of the base character or the high surrogate.

Délku každého elementu je snadné vypočítat jako rozdíl mezi po sobě jdoucích indexy.The length of each element is easily computed as the difference between successive indexes. Délka pole bude vždy menší než nebo rovna délce řetězce.The length of the array will always be less than or equal to the length of the string. Například s ohledem na řetězec "\u4f00\u302a\ud800\udc00\u4f01" Tato metoda vrátí indexy 0, 2 a 4.For example, given the string "\u4f00\u302a\ud800\udc00\u4f01", this method returns the indexes 0, 2, and 4.

Ekvivalentní členovéEquivalent Members

Počínaje verzí 2,0 .NET Framework SubstringByTextElements metoda a LengthInTextElements vlastnost poskytují snadnou použití implementace funkcí nabízených ParseCombiningCharacters metodou.Starting in version 2.0 of the .NET Framework, the SubstringByTextElements method and LengthInTextElements property provide an easy to use implementation of the functionality offered by the ParseCombiningCharacters method.

Platí pro

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