public void TestCombiningCharacter()
{
string str = "a\u20D1";
string result = StringInfo.GetNextTextElement("13229^a\u20D1abcde", 6);
Assert.Equal(str, result);
}
public static object CoerceKeyTip(ISyncKeyTipAndContent syncElement,
object baseValue,
DependencyProperty contentProperty)
{
DependencyObject element = syncElement as DependencyObject;
Debug.Assert(element != null);
if (syncElement.KeepKeyTipAndContentInSync &&
!syncElement.IsKeyTipSyncSource)
{
syncElement.KeepKeyTipAndContentInSync = false;
if (string.IsNullOrEmpty((string)baseValue))
{
string stringContent = element.GetValue(contentProperty) as string;
if (stringContent != null)
{
int accessIndex = RibbonHelper.FindAccessKeyMarker(stringContent);
if (accessIndex >= 0 && accessIndex < stringContent.Length - 1)
{
syncElement.KeepKeyTipAndContentInSync = true;
return(StringInfo.GetNextTextElement(stringContent, accessIndex + 1));
}
}
}
}
return(baseValue);
}
private bool CheckOperatorName(string name)
{
if (String.IsNullOrEmpty(name) || Char.IsDigit(name, 0))
{
return(false);
}
string InvalidChars = "()[]{}\'\"\u0009\u000a\u000d";
string elem;
int n = name.Length;
int i = 0;
int m;
while (i < n)
{
elem = StringInfo.GetNextTextElement(name, i);
m = elem.Length;
if (InvalidChars.IndexOf(elem[0]) >= 0 || (Char.IsWhiteSpace(elem, 0) && elem[0] != ' ') ||
(elem[0] == ' ' && (m != 1 || (i + m < n && name[i + m] == ' '))))
{
return(false);
}
i += m;
}
i++;
return(true);
}
public bool NegTest3()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest3: The index is a negative number");
try
{
string str = "df8%^dk";
string result = StringInfo.GetNextTextElement(str, -1);
TestLibrary.TestFramework.LogError("105", "The ArgumentOutOfRangeException was not thrown as expected");
retVal = false;
}
catch (ArgumentOutOfRangeException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("106", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return(retVal);
}
public bool NegTest1()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest1: The string is a null reference");
try
{
string str = null;
string result = StringInfo.GetNextTextElement(str, 0);
TestLibrary.TestFramework.LogError("101", "The ArgumentNullException was not thrown as expected");
retVal = false;
}
catch (ArgumentNullException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("102", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return(retVal);
}
public bool PosTest4()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest4: The element is a combination of base character and several combining characters");
try
{
string str = "z\uFE22\u20D1\u20EB";
string result = StringInfo.GetNextTextElement("az\uFE22\u20D1\u20EBabcde", 1);
if (result.Length != 4)
{
TestLibrary.TestFramework.LogError("008", "The result is not the value as expected,length is: " + result.Length);
retVal = false;
}
if (result != str)
{
TestLibrary.TestFramework.LogError("009", "The result is not the value as expected,the result is: " + result);
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("010", "Unexpected exception: " + e);
retVal = false;
}
return(retVal);
}
public bool PosTest2()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest2: The first element is a surrogate pair");
try
{
string str = "\uDBFF\uDFFF";
string result = StringInfo.GetNextTextElement("ef45-;\uDBFF\uDFFFabcde", 6);
if (result.Length != 2)
{
TestLibrary.TestFramework.LogError("003", "The result is not the value as expected");
retVal = false;
}
if (result != str)
{
TestLibrary.TestFramework.LogError("004", "The result is not the value as expected,the result is: " + result);
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("005", "Unexpected exception: " + e);
retVal = false;
}
return(retVal);
}
public void TestNonSpacingMark()
{
string str = "a\u20D1";
string result = StringInfo.GetNextTextElement("a\u20D1abcde");
Assert.Equal(str, result);
}
public override bool Capitalize()
{
int startPosition = _startPoint.CurrentPosition;
if (IsEmpty)
{
int endPosition = _endPoint.CurrentPosition;
TextRange currentWord = _startPoint.GetCurrentWord();
string nextCharacter = _startPoint.GetNextCharacter();
if (_startPoint.CurrentPosition == currentWord.GetStartPoint().CurrentPosition)
{
nextCharacter = nextCharacter.ToUpper(CultureInfo.CurrentCulture);
}
else
{
nextCharacter = nextCharacter.ToLower(CultureInfo.CurrentCulture);
}
if (!PrimitivesUtilities.Replace(TextBuffer.AdvancedTextBuffer, new Span(_startPoint.CurrentPosition, nextCharacter.Length), nextCharacter))
{
return(false);
}
_endPoint.MoveTo(endPosition);
}
else
{
using (ITextEdit edit = TextBuffer.AdvancedTextBuffer.CreateEdit())
{
TextRange currentWord = _startPoint.GetCurrentWord();
// If the current word extends past this range, go to the next word
if (currentWord.GetStartPoint().CurrentPosition < _startPoint.CurrentPosition)
{
currentWord = currentWord.GetEndPoint().GetNextWord();
}
while (currentWord.GetStartPoint().CurrentPosition < _endPoint.CurrentPosition)
{
string wordText = currentWord.GetText();
string startElement = StringInfo.GetNextTextElement(wordText);
wordText = startElement.ToUpper(CultureInfo.CurrentCulture) + wordText.Substring(startElement.Length).ToLower(CultureInfo.CurrentCulture);
if (!edit.Replace(currentWord.AdvancedTextRange.Span, wordText))
{
edit.Cancel();
return(false);
}
currentWord = currentWord.GetEndPoint().GetNextWord();
}
edit.Apply();
if (edit.Canceled)
{
return(false);
}
}
}
_startPoint.MoveTo(startPosition);
return(true);
}
public override string GetPreviousCharacter()
{
ITextSnapshot snapshot = _textBuffer.AdvancedTextBuffer.CurrentSnapshot;
int currentPosition = CurrentPosition;
if (currentPosition == 0)
{
return(string.Empty);
}
int index = currentPosition - 1;
string characterText = char.ToString(snapshot[index]);
while (--index >= 0)
{
string newText = snapshot[index] + characterText;
if (StringInfo.GetNextTextElement(newText).Length <= characterText.Length)
{
break;
}
characterText = newText;
}
return(characterText);
}
private static GraceObject mAt(
EvaluationContext ctx,
GraceString self,
GraceObject other
)
{
var oth = other.FindNativeParent <GraceNumber>();
if (oth == null)
{
return(GraceString.Create("bad index"));
}
int idx = oth.GetInt() - 1;
if (idx >= self.graphemeIndices.Length || idx < 0)
{
ErrorReporting.RaiseError(ctx, "R2013",
new Dictionary <string, string> {
{ "index", "" + (idx + 1) },
{ "valid", self.graphemeIndices.Length > 0 ?
"1 .. " + self.graphemeIndices.Length
: "none (empty)" }
}, "Index must be a number");
}
int start = self.graphemeIndices[idx];
return(GraceString.Create(
StringInfo.GetNextTextElement(self.Value, start)));
}
public bool PosTest1()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest1: Get the text element from a random index in a string");
try
{
string str = TestLibrary.Generator.GetString(-55, true, c_MINI_STRING_LENGTH, c_MAX_STRING_LENGTH);
int index = this.GetInt32(8, str.Length);
string result = StringInfo.GetNextTextElement(str, index);
if (result != str[index].ToString())
{
TestLibrary.TestFramework.LogError("001", "The result is not the value as expected,the result is: " + result);
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("002", "Unexpected exception: " + e);
retVal = false;
}
return(retVal);
}
public bool NegTest2()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest2: The index is out of the range of the string");
try
{
string str = "abc";
string result = StringInfo.GetNextTextElement(str, -4);
TestLibrary.TestFramework.LogError("103", "The ArgumentOutOfRangeException was not thrown as expected");
retVal = false;
}
catch (ArgumentOutOfRangeException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("104", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return(retVal);
}
public void TestSurrogatePair()
{
string str = "\uDBFF\uDFFF";
string result = StringInfo.GetNextTextElement("ef45-;\uDBFF\uDFFFabcde", 6);
Assert.Equal(2, result.Length);
Assert.Equal(str, result);
}
public void GetNextTextElement_Invalid()
{
AssertExtensions.Throws <ArgumentNullException>("str", () => StringInfo.GetNextTextElement(null)); // Str is null
AssertExtensions.Throws <ArgumentNullException>("str", () => StringInfo.GetNextTextElement(null, 0)); // Str is null
AssertExtensions.Throws <ArgumentOutOfRangeException>("index", () => StringInfo.GetNextTextElement("abc", -1)); // Index < 0
AssertExtensions.Throws <ArgumentOutOfRangeException>("index", () => StringInfo.GetNextTextElement("abc", 4)); // Index > str.Length
}
public void GetNextTextElement(string str, int index, string expected)
{
if (index == 0)
{
Assert.Equal(expected, StringInfo.GetNextTextElement(str));
}
Assert.Equal(expected, StringInfo.GetNextTextElement(str, index));
}
public void TestRandomIndex()
{
string str = _generator.GetString(-55, true, c_MINI_STRING_LENGTH, c_MAX_STRING_LENGTH);
int index = this.GetInt32(8, str.Length);
string result = StringInfo.GetNextTextElement(str, index);
Assert.Equal(str[index].ToString(), result);
}
public void TestCharacterCombination()
{
string str = "z\uFE22\u20D1\u20EB";
string result = StringInfo.GetNextTextElement("az\uFE22\u20D1\u20EBabcde", 1);
Assert.Equal(4, result.Length);
Assert.Equal(str, result);
}
private Token lexCloseBracket()
{
int start = index;
advanceIndex();
UnicodeCategory cat = validateChar();
char c = code[index];
string cStr = StringInfo.GetNextTextElement(code, index);
while (UnicodeLookup.CloseBrackets.Contains(cStr) ||
isOperatorCharacter(c, cat))
{
advanceIndex();
cat = validateChar();
c = code[index];
cStr = StringInfo.GetNextTextElement(code, index);
if (code.Substring(start, index - start) == "]]")
{
return(new RGenericToken(moduleName, line, column));
}
}
string bracket = code.Substring(start, index - start);
int[] indices = StringInfo.ParseCombiningCharacters(bracket);
int lastIndex = indices[indices.Length - 1];
string l = StringInfo.GetNextTextElement(bracket, lastIndex);
// For ease, any ) characters at the end of a closing bracket
// are removed from the token.
int sub = 0;
int blen = bracket.Length;
int graphemeOffset = indices.Length - 1;
while (l == ")" || l == ".")
{
sub++;
graphemeOffset--;
lastIndex = indices[graphemeOffset];
l = StringInfo.GetNextTextElement(bracket, lastIndex);
}
if (sub > 0)
{
// Reset index to before the )s so that they will be
// lexed as the following tokens.
index -= sub;
bracket = bracket.Substring(0, bracket.Length - sub);
}
if (!UnicodeLookup.CloseBrackets.Contains(l))
{
reportError("L0009",
new Dictionary <string, string>
{
{ "char", l }
},
"Invalid character at end of bracket sequence");
}
return(new CloseBracketToken(moduleName, line, column, bracket));
}
public void TestNegativeIndex()
{
string str = "df8%^dk";
Assert.Throws <ArgumentOutOfRangeException>(() =>
{
string result = StringInfo.GetNextTextElement(str, -1);
});
}
public void TestOutOfRangeIndex()
{
string str = "abc";
Assert.Throws <ArgumentOutOfRangeException>(() =>
{
string result = StringInfo.GetNextTextElement(str, -4);
});
}
public void TestNullReference()
{
string str = null;
Assert.Throws <ArgumentNullException>(() =>
{
string result = StringInfo.GetNextTextElement(str, 0);
});
}
public void GetNextTextElement()
{
Assert.AreEqual("A", StringInfo.GetNextTextElement("ABC", 0), "#1");
Assert.AreEqual("C", StringInfo.GetNextTextElement("ABC", 2), "#2");
Assert.AreEqual("A\u0330", StringInfo.GetNextTextElement("A\u0330BC", 0), "#3");
Assert.AreEqual("B", StringInfo.GetNextTextElement("A\u0330BC", 2), "#4");
// hmm ...
Assert.AreEqual(String.Empty, StringInfo.GetNextTextElement("A\u0330BC", 4), "#4");
}
public static string SubStringByTextElements(this string str, int startIndex, int length)
{
string resultStr = "";
for (int i = startIndex; i < startIndex + length; i++)
{
resultStr += StringInfo.GetNextTextElement(str, i);
}
return(resultStr);
}
public void GetNextTextElement()
{
Assert.AreEqual("A", StringInfo.GetNextTextElement("ABC", 0), "#1");
Assert.AreEqual("C", StringInfo.GetNextTextElement("ABC", 2), "#2");
Assert.AreEqual("A\u0330", StringInfo.GetNextTextElement("A\u0330BC", 0), "#3");
Assert.AreEqual("B", StringInfo.GetNextTextElement("A\u0330BC", 2), "#4");
// hmm ...
#if NET_2_0 // it causes ArgumentOutOfRangeException in 1.x, not worthy to test it anymore
Assert.AreEqual(String.Empty, StringInfo.GetNextTextElement("A\u0330BC", 4), "#4");
#endif
}
/// <summary>
/// Converts suits to ints
/// </summary>
/// <param name="input">stdin</param>
/// <returns>
/// A list of ints.
/// </returns>
private void ConvertToSuit(string input)
{
string firstChar = StringInfo.GetNextTextElement(input, 1);
try
{
Suit = (Suit)Int16.Parse(firstChar);
}
catch (Exception e)
{
Suit = (Suit)Enum.Parse(typeof(Suit), firstChar.ToUpper());
}
}
/// <summary>
/// Convert face cards to ints.
/// </summary>
/// <param name="input">stdin</param>
/// <returns>
/// a list of ints
/// </returns>
private void ConvertToRank(string input)
{
string firstChar = StringInfo.GetNextTextElement(input, 0);
try
{
Rank = (Rank)Int16.Parse(firstChar);
}
catch (Exception e)
{
Rank = (Rank)Enum.Parse(typeof(Rank), firstChar.ToUpper());
}
}
/// <summary>Converts a G4 identifier name to a C# name.</summary>
/// <param name="g4Name">The G4 identifier name.</param>
/// <returns><paramref name="g4Name"/> converted to an ideomatic C# name, that is, with the first
/// character in uppercase.</returns>
public static string ToCSharpName(string g4Name)
{
string firstTextElement = StringInfo.GetNextTextElement(g4Name);
string toUpper = firstTextElement.ToUpper(CultureInfo.InvariantCulture);
if (toUpper == firstTextElement)
{
// Avoid allocating...
return(g4Name);
}
else
{
return(String.Concat(toUpper, g4Name.Remove(0, firstTextElement.Length)));
}
}
/// <summary>
/// Returns StringInfo.GetNextTextElement(key).ToUpperInvariant() throwing exceptions for null
/// and multi-char strings.
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
private static string NormalizeKey(string key)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
string firstCharacter = StringInfo.GetNextTextElement(key);
if (key != firstCharacter)
{
throw new ArgumentException(SR.Get(SRID.AccessKeyManager_NotAUnicodeCharacter, "key"));
}
return(firstCharacter.ToUpperInvariant());
}
public void TestLetter()
{
char ch = _generator.GetCharLetter(-55);
string str = _generator.GetString(-55, false, c_MINI_STRING_LENGTH, c_MAX_STRING_LENGTH);
// If the random string's first letter is a NonSpacingMark the returned result will be ch + string's first letter (expected)
// That scenario is hit in PosTest3. In order to avoid random failures, if the first character happens to be a NonSpacingMark
// then append a random char letter on to the string
if (CharUnicodeInfo.GetUnicodeCategory(str.ToCharArray()[0]) == UnicodeCategory.NonSpacingMark)
{
str = _generator.GetCharLetter(-55).ToString() + str;
}
string result = StringInfo.GetNextTextElement(ch.ToString() + str);
Assert.Equal(ch.ToString(), result);
}
