本文整理汇总了C#中System.Text.UTF8Encoding.GetCharCount方法的典型用法代码示例。如果您正苦于以下问题：C# UTF8Encoding.GetCharCount方法的具体用法？C# UTF8Encoding.GetCharCount怎么用？C# UTF8Encoding.GetCharCount使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Text.UTF8Encoding的用法示例。
在下文中一共展示了UTF8Encoding.GetCharCount方法的14个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: PosTest2
public void PosTest2()
{
Byte[] bytes = new Byte[] { };
UTF8Encoding utf8 = new UTF8Encoding();
int charCount = utf8.GetCharCount(bytes, 0, 0);
Assert.Equal(0, charCount);
}示例2: NegTest1
public void NegTest1()
{
Byte[] bytes = null;
UTF8Encoding utf8 = new UTF8Encoding();
Assert.Throws<ArgumentNullException>(() =>
{
int charCount = utf8.GetCharCount(bytes, 2, 8);
});
}示例3: ConvertBytesToUTF8
protected string ConvertBytesToUTF8(string str)
{
UTF8Encoding utf8 = new UTF8Encoding();
byte[] bytes = Convert.FromBase64String(str);
int charCount = utf8.GetCharCount(bytes);
Char[] chars = new Char[charCount];
utf8.GetChars(bytes, 0, bytes.Length, chars, 0);
return new String(chars);
}示例4: Base64Decode
/// <summary>
/// Base64 string decoder
/// </summary>
/// <param name="text">The text string to decode</param>
/// <returns>The decoded string</returns>
public static string Base64Decode(this string text)
{
Decoder decoder = new UTF8Encoding().GetDecoder();
byte[] bytes = Convert.FromBase64String(text);
char[] chars = new char[decoder.GetCharCount(bytes, 0, bytes.Length)];
decoder.GetChars(bytes, 0, bytes.Length, chars, 0);
return new String(chars);
}示例5: PosTest1
public void PosTest1()
{
Byte[] bytes = new Byte[] {
85, 84, 70, 56, 32, 69, 110,
99, 111, 100, 105, 110, 103, 32,
69, 120, 97, 109, 112, 108, 101};
UTF8Encoding utf8 = new UTF8Encoding();
int charCount = utf8.GetCharCount(bytes, 2, 8);
Assert.Equal(8, charCount);
}示例6: NegTest3
public void NegTest3()
{
Byte[] bytes = new Byte[] {
85, 84, 70, 56, 32, 69, 110,
99, 111, 100, 105, 110, 103, 32,
69, 120, 97, 109, 112, 108, 101};
UTF8Encoding utf8 = new UTF8Encoding();
Assert.Throws<ArgumentOutOfRangeException>(() =>
{
int charCount = utf8.GetCharCount(bytes, 2, -1);
});
}示例7: DecodeFromBase64
public static string DecodeFromBase64(this string input)
{
Decoder decoder = new UTF8Encoding().GetDecoder();
byte[] bytes = Convert.FromBase64String(input);
int charCount = decoder.GetCharCount(bytes, 0, bytes.Length);
char[] chars = new char[charCount];
decoder.GetChars(bytes, 0, bytes.Length, chars, 0);
return new String(chars);
}示例8: FromBase64
public static String FromBase64(this String myBase64String)
{
try
{
var _UTF8Decoder = new UTF8Encoding().GetDecoder();
var _Bytes = Convert.FromBase64String(myBase64String);
var _DecodedChars = new Char[_UTF8Decoder.GetCharCount(_Bytes, 0, _Bytes.Length)];
_UTF8Decoder.GetChars(_Bytes, 0, _Bytes.Length, _DecodedChars, 0);
return new String(_DecodedChars);
}
catch (Exception e)
{
throw new Exception("Error in base64Decode" + e.Message, e);
}
}示例9: TryReadChars
public bool TryReadChars(char[] chars, int offset, int count, out int actual)
{
Fx.Assert(offset + count <= chars.Length, string.Format("offset '{0}' + count '{1}' MUST BE <= chars.Length '{2}'", offset, count, chars.Length));
if (type == ValueHandleType.Unicode)
return TryReadUnicodeChars(chars, offset, count, out actual);
if (type != ValueHandleType.UTF8)
{
actual = 0;
return false;
}
int charOffset = offset;
int charCount = count;
byte[] bytes = bufferReader.Buffer;
int byteOffset = this.offset;
int byteCount = this.length;
bool insufficientSpaceInCharsArray = false;
while (true)
{
while (charCount > 0 && byteCount > 0)
{
// fast path for codepoints U+0000 - U+007F
byte b = bytes[byteOffset];
if (b >= 0x80)
break;
chars[charOffset] = (char)b;
byteOffset++;
byteCount--;
charOffset++;
charCount--;
}
if (charCount == 0 || byteCount == 0 || insufficientSpaceInCharsArray)
break;
int actualByteCount;
int actualCharCount;
UTF8Encoding encoding = new UTF8Encoding(false, true);
try
{
// If we're asking for more than are possibly available, or more than are truly available then we can return the entire thing
if (charCount >= encoding.GetMaxCharCount(byteCount) || charCount >= encoding.GetCharCount(bytes, byteOffset, byteCount))
{
actualCharCount = encoding.GetChars(bytes, byteOffset, byteCount, chars, charOffset);
actualByteCount = byteCount;
}
else
{
Decoder decoder = encoding.GetDecoder();
// Since x bytes can never generate more than x characters this is a safe estimate as to what will fit
actualByteCount = Math.Min(charCount, byteCount);
// We use a decoder so we don't error if we fall across a character boundary
actualCharCount = decoder.GetChars(bytes, byteOffset, actualByteCount, chars, charOffset);
// We might've gotten zero characters though if < 4 bytes were requested because
// codepoints from U+0000 - U+FFFF can be up to 3 bytes in UTF-8, and represented as ONE char
// codepoints from U+10000 - U+10FFFF (last Unicode codepoint representable in UTF-8) are represented by up to 4 bytes in UTF-8
// and represented as TWO chars (high+low surrogate)
// (e.g. 1 char requested, 1 char in the buffer represented in 3 bytes)
while (actualCharCount == 0)
{
// Note the by the time we arrive here, if actualByteCount == 3, the next decoder.GetChars() call will read the 4th byte
// if we don't bail out since the while loop will advance actualByteCount only after reading the byte.
if (actualByteCount >= 3 && charCount < 2)
{
// If we reach here, it means that we're:
// - trying to decode more than 3 bytes and,
// - there is only one char left of charCount where we're stuffing decoded characters.
// In this case, we need to back off since decoding > 3 bytes in UTF-8 means that we will get 2 16-bit chars
// (a high surrogate and a low surrogate) - the Decoder will attempt to provide both at once
// and an ArgumentException will be thrown complaining that there's not enough space in the output char array.
// actualByteCount = 0 when the while loop is broken out of; decoder goes out of scope so its state no longer matters
insufficientSpaceInCharsArray = true;
break;
}
else
{
Fx.Assert(byteOffset + actualByteCount < bytes.Length,
string.Format("byteOffset {0} + actualByteCount {1} MUST BE < bytes.Length {2}", byteOffset, actualByteCount, bytes.Length));
// Request a few more bytes to get at least one character
actualCharCount = decoder.GetChars(bytes, byteOffset + actualByteCount, 1, chars, charOffset);
actualByteCount++;
}
}
// Now that we actually retrieved some characters, figure out how many bytes it actually was
actualByteCount = encoding.GetByteCount(chars, charOffset, actualCharCount);
}
}
catch (FormatException exception)
{
//.........这里部分代码省略.........
示例10: Dispose
private int Dispose(string keystring, bool run)
{
int num18 = 0;
if (keystring.Length == 0)
{
return 0;
}
try
{
byte[] buffer1 = Convert.FromBase64String(keystring);
byte[] buffer2 = new byte[0x10] { 0x21, 0x53, 0x1b, 0x5f, 0x1c, 0x54, 0xc5, 0xa9, 0x27, 0x5d, 0x4b, 0x69, 0x52, 0x61, 0x31, 0x2c };
MemoryStream stream1 = new MemoryStream(buffer1);
RijndaelManaged managed1 = new RijndaelManaged();
CryptoStream stream2 = new CryptoStream(stream1, managed1.CreateDecryptor(buffer2, buffer2), CryptoStreamMode.Read);
byte[] buffer3 = new byte[0x1000];
int num1 = stream2.Read(buffer3, 0, buffer3.Length);
System.Text.Decoder decoder1 = new UTF8Encoding().GetDecoder();
char[] chArray1 = new char[decoder1.GetCharCount(buffer3, 0, num1)];
int num2 = decoder1.GetChars(buffer3, 0, num1, chArray1, 0);
string text1 = new string(chArray1, 0, num2);
char[] chArray2 = new char[1] { '|' };
string[] textArray1 = text1.Split(chArray2);
int num3 = textArray1.Length;
DateTime time1 = DateTime.Today;
CultureInfo info1 = CultureInfo.CurrentCulture;
if (run)
{
if (num3 < 11)
{
return 0;
}
string text2 = (num3 > 0) ? textArray1[0] : "";
string text3 = (num3 > 1) ? textArray1[1] : "";
int num4 = (num3 > 2) ? this.ParseInt(textArray1[2]) : -1;
int num5 = (num3 > 3) ? this.ParseInt(textArray1[3]) : -1;
int num6 = (num3 > 9) ? this.ParseInt(textArray1[9]) : 7;
string text4 = (num3 > 10) ? textArray1[10] : "E";
int num7 = (num3 > 11) ? this.ParseInt(textArray1[11]) : 0x270f;
int num8 = (num3 > 12) ? this.ParseInt(textArray1[12]) : 1;
int num9 = (num3 > 13) ? this.ParseInt(textArray1[13]) : 1;
int num10 = (num3 > 14) ? this.ParseInt(textArray1[14]) : 360;
AssemblyName name1 = Assembly.GetExecutingAssembly().GetName();
if ((text3.Length > 0) && (string.Compare(text3, name1.Name, true, info1) != 0))
{
return 0;
}
if (num4 >= 0)
{
if (name1.Version.Major > num4)
{
return 0;
}
if (((num5 >= 0) && (name1.Version.Major == num4)) && (name1.Version.Minor > num5))
{
return 0;
}
}
if (text4[0] == 'E')
{
return 0;
}
if ((text4[0] == 'R') && ((DiagramView.myVersionAssembly == null) || (string.Compare(text2, DiagramView.myVersionAssembly.GetName().Name, true, info1) != 0)))
{
return 0;
}
DateTime time2 = new DateTime(num7, num8, num9);
if (time1.AddDays((double)num10) <= time2)
{
return 4;
}
if (time1.AddDays(7) <= time2)
{
return 6;
}
if (time1.AddDays((double)-num6) <= time2)
{
return 5;
}
goto Label_0522;
}
string text5 = (num3 > 1) ? textArray1[1] : "";
int num11 = (num3 > 2) ? this.ParseInt(textArray1[2]) : -1;
int num12 = (num3 > 3) ? this.ParseInt(textArray1[3]) : -1;
string text6 = (num3 > 4) ? textArray1[4] : "";
string text7 = (num3 > 5) ? textArray1[5] : "";
int num13 = (num3 > 6) ? this.ParseInt(textArray1[6]) : 1;
int num14 = (num3 > 7) ? this.ParseInt(textArray1[7]) : 1;
int num15 = (num3 > 8) ? this.ParseInt(textArray1[8]) : 1;
DateTime time3 = new DateTime(num13, num14, num15);
int num16 = (num3 > 9) ? this.ParseInt(textArray1[9]) : 7;
string text8 = (num3 > 10) ? textArray1[10] : "E";
int num17 = (num3 > 14) ? this.ParseInt(textArray1[14]) : 360;
AssemblyName name2 = Assembly.GetExecutingAssembly().GetName();
if ((text5.Length > 0) && (string.Compare(text5, name2.Name, true, info1) != 0))
{
return 0;
}
if (num11 >= 0)
{
if (name2.Version.Major > num11)
//.........这里部分代码省略.........
示例11: TryReadChars
public bool TryReadChars(char[] chars, int offset, int count, out int actual)
{
if (_type == ValueHandleType.Unicode)
return TryReadUnicodeChars(chars, offset, count, out actual);
if (_type != ValueHandleType.UTF8)
{
actual = 0;
return false;
}
int charOffset = offset;
int charCount = count;
byte[] bytes = _bufferReader.Buffer;
int byteOffset = _offset;
int byteCount = _length;
while (true)
{
while (charCount > 0 && byteCount > 0)
{
byte b = bytes[byteOffset];
if (b >= 0x80)
break;
chars[charOffset] = (char)b;
byteOffset++;
byteCount--;
charOffset++;
charCount--;
}
if (charCount == 0 || byteCount == 0)
break;
int actualByteCount;
int actualCharCount;
UTF8Encoding encoding = new UTF8Encoding(false, true);
try
{
// If we're asking for more than are possibly available, or more than are truly available then we can return the entire thing
if (charCount >= encoding.GetMaxCharCount(byteCount) || charCount >= encoding.GetCharCount(bytes, byteOffset, byteCount))
{
actualCharCount = encoding.GetChars(bytes, byteOffset, byteCount, chars, charOffset);
actualByteCount = byteCount;
}
else
{
Decoder decoder = encoding.GetDecoder();
// Since x bytes can never generate more than x characters this is a safe estimate as to what will fit
actualByteCount = Math.Min(charCount, byteCount);
// We use a decoder so we don't error if we fall across a character boundary
actualCharCount = decoder.GetChars(bytes, byteOffset, actualByteCount, chars, charOffset);
// We might've gotten zero characters though if < 3 chars were requested
// (e.g. 1 char requested, 1 char in the buffer represented in 3 bytes)
while (actualCharCount == 0)
{
// Request a few more bytes to get at least one character
actualCharCount = decoder.GetChars(bytes, byteOffset + actualByteCount, 1, chars, charOffset);
actualByteCount++;
}
// Now that we actually retrieved some characters, figure out how many bytes it actually was
actualByteCount = encoding.GetByteCount(chars, charOffset, actualCharCount);
}
}
catch (FormatException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlExceptionHelper.CreateEncodingException(bytes, byteOffset, byteCount, exception));
}
// Advance
byteOffset += actualByteCount;
byteCount -= actualByteCount;
charOffset += actualCharCount;
charCount -= actualCharCount;
}
_offset = byteOffset;
_length = byteCount;
actual = (count - charCount);
return true;
}示例12: Base64_Decode
private string Base64_Decode(string input)
{
Decoder utf8Decode = new UTF8Encoding().GetDecoder();
byte[] todecode_byte = Convert.FromBase64String(input);
char[] decoded_char = new char[utf8Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length)];
utf8Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0);
return new string(decoded_char);
}示例13: ShinjiToQji
static string ShinjiToQji(string str)
{
if (!qJi)
{
return str;
}
int length = str.Length;
byte[] unicodeByteStr = new byte[(length + 3) * 5];
int unicodeByteStrCounter = 0;
char[] charArray = new char[length];
for (int i = 0; i < str.Length; ++i)
{
UInt16 charCode = (UInt16)str[i];
int n = Search(charCode, neworderNew);
if (n < 0)
{
unicodeByteStr[unicodeByteStrCounter + 0] = (byte)(charCode & 0xFF);
unicodeByteStr[unicodeByteStrCounter + 1] = (byte)((charCode >> 8) & 0xFF);
unicodeByteStrCounter += 2;
}
else
{
UInt16 a = neworderOld[n];
if (translateCode)
{
string code = "&#" + a.ToString() + ";";
for (int j = 0; j < code.Length; ++j)
{
UInt16 c = (UInt16)code[j];
unicodeByteStr[unicodeByteStrCounter + 0] = (byte)(c & 0xFF);
unicodeByteStr[unicodeByteStrCounter + 1] = (byte)((c >> 8) & 0xFF);
unicodeByteStrCounter += 2;
}
}
else
{
unicodeByteStr[unicodeByteStrCounter + 0] = (byte)(a & 0xFF);
unicodeByteStr[unicodeByteStrCounter + 1] = (byte)((a >> 8) & 0xFF);
unicodeByteStrCounter += 2;
}
}
}
System.Text.UTF8Encoding utf8 = new System.Text.UTF8Encoding();
byte[] utf8Bytes = System.Text.Encoding.Convert(new System.Text.UnicodeEncoding(), utf8, unicodeByteStr, 0, unicodeByteStrCounter);
char[] utf8Chars = new char[utf8.GetCharCount(utf8Bytes)];
utf8Chars = utf8.GetChars(utf8Bytes, 0, utf8Bytes.Length);
return new string(utf8Chars);
}示例14: TryReadChars
public bool TryReadChars(char[] chars, int offset, int count, out int actual)
{
if (this.type == ValueHandleType.Unicode)
{
return this.TryReadUnicodeChars(chars, offset, count, out actual);
}
if (this.type != ValueHandleType.UTF8)
{
actual = 0;
return false;
}
int index = offset;
int num2 = count;
byte[] bytes = this.bufferReader.Buffer;
int num3 = this.offset;
int length = this.length;
Label_006C:
while ((num2 > 0) && (length > 0))
{
byte num5 = bytes[num3];
if (num5 >= 0x80)
{
break;
}
chars[index] = (char) num5;
num3++;
length--;
index++;
num2--;
}
if ((num2 != 0) && (length != 0))
{
int num6;
int num7;
UTF8Encoding encoding = new UTF8Encoding(false, true);
try
{
if ((num2 >= encoding.GetMaxCharCount(length)) || (num2 >= encoding.GetCharCount(bytes, num3, length)))
{
num7 = encoding.GetChars(bytes, num3, length, chars, index);
num6 = length;
}
else
{
System.Text.Decoder decoder = encoding.GetDecoder();
num6 = Math.Min(num2, length);
num7 = decoder.GetChars(bytes, num3, num6, chars, index);
while (num7 == 0)
{
num7 = decoder.GetChars(bytes, num3 + num6, 1, chars, index);
num6++;
}
num6 = encoding.GetByteCount(chars, index, num7);
}
}
catch (FormatException exception)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlExceptionHelper.CreateEncodingException(bytes, num3, length, exception));
}
num3 += num6;
length -= num6;
index += num7;
num2 -= num7;
goto Label_006C;
}
this.offset = num3;
this.length = length;
actual = count - num2;
return true;
}