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The XString-class is a powerfull extension to the standard CString-class. Whereever you use a CString you can now use a XString with much more functionality. The class includes many string-functions I missed in CString, like removing, replacing or inserting strings into another, convertingfunctions to double or int and case-insensitive find, replace and remove. But the most powerfull extension is a method I called 'Elementstrings'. Most of the functions are const and return a XString, so you can use them in an expression. The functionality of this class is not very difficult to understand or to implement, but in my case, it saves a lot of time in my projects.
If you miss some functions which could be usefull to extend this class please contact me.
Additional String functions
What are Elementstrings?
Elementstring functions
Friend functions
| Download source file (8 KB) | (comments in german) | |
Additional Stringfunctions:
| Function | Description | Example | Result |
| XString num("12.345"); | |||
| Double | Convertion to double | num.Double() | 12.345 |
| Int | Convertion to int | num.Int() | 12 |
| Char | Convertion to char | num.Char() | 1 |
| Bool | Convertion to bool | num.Bool() | true |
| XString test("Test Test"); | |||
| Remove | Remove first occurence of a string, char or range | test.Remove('e') | "Tst Test" |
| RemoveAll | Remove all occurences of a string or char | test.RemoveAll("e") | "Tst Tst" |
| Replace | Replace first occurence of a string, char or range with another string | test.Replace("x", "e") | "Txst Test" |
| ReplaceAll | Replace all occurences of a string or char with another string | test.ReplaceAll("x", "e") | "Txst Txst" |
| Insert | Inserts a string at a given position | test.Insert("e", 1) | "Teest Test" |
| XString
op("Test"); XString leer; |
|||
| operator-- | Remove last character of the string | op--, --op | "Tes" |
| operator! | Indicates, wheter the string was empty | !op !lee |
false true |
| XString test("Test"); | |||
| NCFind NCRemove NCReplace |
Like Find, Remove or Replace, but case-insensitiv (No Case) | test.Find("E") test.NCFind("E") |
-1 1 |
| XString test(" Test "); | |||
| Reverse | Reverses the string | test.Reverse() | " tseT " |
| Trim | Delete leading and trailing whitespaces | test..Trim() | "Test" |
| Lower | Returns lowercase string | test.Lower() | " test " |
| Upper | Returns uppercase string | test.Upper() | " TEST " |
| XString test("Test Test"); | |||
| FromTo | Like Mid, but using positions | test.FromTo(5, 7) | "Tes" |
| Count | Counts the occurence of a string or char in another string | test.Count('e') | 2 |
| XString test("Test") | |||
| FindIndex | Search the position of the first occurence of a char | test.FindIndex('s') | 2 |
| Fill | Fill the string to the specified length with trailing spaces | test.Fill(5) | "Test " |
| XString error("Error * in Line *"); | |||
| ReplaceTabs | Replace all \t in the string with the corresponding number of spaces | ||
| ReplaceText | Replace '*' with specified text. When using more than one '*' devide the replace-texts with '|' |
error.ReplaceText("75|120") | "Error 75 in Line 120" |
| XString format("###.##"); | |||
| GetDoubleFormatString | Translate a formatting-string into C-notation | format.GetDoubleFormatString() | "%6.2lf" |
What are Elementstrings?
Elementstrings are a special sort of short (and dynamic) stringarrays. Every array-entry was divided with a separator from the next entry. For example, the elementstring "zero|one|two|three" has four elemententrys. With this class you can easyly get, set or find a specified element. You don't have to specify the size of the 'array', because it's only one string. The entries can be strings, chars, doubles, ints or bools. If you set an entry, the numbers are converted into strings and if you get one, it was back converted to the specified type. Normaly the separator is '|', but it's possible to use every other character.
Elementstringfunctions:
| Function | Description | Example | Result |
| XString str("zero|one|22|3.3|four|5||7") | |||
| Element | Return the given element as string | str.Element(1) | "one" |
| Elements | Return the given elements as an elementstring | str.Elements(1, 4) | "one|22|3.3|four" |
| operator() | same as Element or Elements | str(3) | "3.3" |
| GetString GetDouble GetInt GetChar GetBool |
Return the given element as specified type | str.GetString(3) str.GetDouble(3) str.GetInt(3) str.GetChar(3) str.GetBool(3) |
"3.3" 3.3 3 '3' true |
| SetElement | Set the element at the given index with a string, double, int, char or bool |
str.SetElement(3, 99) str.SetElement(9, 'x') |
"zero|one|22|99|four|5||7" "zero|one|22|99|four|5||7||x" |
| ElementIndex | Retrieve the index of the specified element | str.ElementIndex("four") str.ElementIndex(1) |
4 -1 |
| ElementSortString ElementSortDouble ElementSortInt ElementSortChar ElementSort |
Sort the elementstring by using the specified type | str.ElementSortString() str.ElementSortInt() str.ElementSortDouble() |
"|22|3.3|5|7|four|one|zero" "0|0|0|0|3|5|7|22" "0|0|0|0|3.3|5|7|22" |
| SetSeparator | Defines a new separator | XString::SetSeparator('#') | |
| RestoreSeparator | Restores temporary separators | XString::RestoreSeparator() | |
| XString str("one#two#three") | |||
| You can use all functions with an additional parameter as temporar separator. | str.Element(1) str.Element(1, '#') |
"one#two#three" "two" |
|
Friendfunctions:
| Function | Description | Example | Result |
| itoa | Create a XString from an int | itoa(5) | "5" |
| utoa | Create a XString from an unsinged int | utoa(2) | "2" |
| dtoa | Create a XString from a doube | dtoa(3.14) dtoa(3.14, 5) |
"3.14" "3.14000" |
| Repeat | Create a XString with copies of a given string or char | Repeat('x', 10) Repeat("Test", 3") |
"xxxxxxxxxx" "TestTestTest" |
| GetStringTableEntry | Return the entry of a stringtableresource | GetStringTableEntry( AFX_IDS_IDLEMESSAGE) |
"Ready" |
| Concat | Create an elementstring of 1 to 16 strings | Concat("This", "Is", "A", "Test") | "This|Is|A|Test" |
If you've questions, contact me at Joachim.Raidl@iname.com
Last updated: 8 May 1998
Comments
C# conversion of RemoveAll method
Posted by davepusey on 06/04/2005 09:38amI have converted the RemoveAll method to C#. Here is the source code... private static string RemoveAll(string Input, char CharToRemove) { string TempString = Input; while (TempString.IndexOf(CharToRemove) >= 0) { TempString = TempString.Remove(TempString.IndexOf(CharToRemove),1); } return TempString; }Replyhelp me~~~~
Posted by Legacy on 05/12/2003 12:00amOriginally posted by: Joli
ReplySimple modification for use in VC++ .NET
Posted by Legacy on 08/12/2002 12:00amOriginally posted by: Josh
To use in VC++ .NET simply replace m_pchData with *this and replace array accesses with the GetAt function.
-
ReplyPlease explain changes for VC7 .NET
Posted by solion on 10/07/2004 10:32am>replace array accesses with the GetAt function. I compiled without changing arrays, only replaced m_pchData with *this. What did you mean by replace with GetAt ? Can you give an example, please ?
ReplyProblems in VC++ .NET 7.0
Posted by Legacy on 02/13/2002 12:00amOriginally posted by: Joe
do not use this if your in VC++ 7.0.
ReplyString Extension
Posted by Legacy on 06/07/2001 12:00amOriginally posted by: Devi
How to convert date in String format to Date?
For eg , a sample date string is
"January , 05 June,2000"
ReplySe puede usar en lugar de ' char * ' y ' const char* '
Posted by Legacy on 09/28/2000 12:00amOriginally posted by: William Gonz�les
Hola,
�Se puede usar esta clase en par�metros de funciones de tipo ' char * ' y ' const char * ' ?
La clase CString tiene el operador ' const char* ', pero hay muchas funciones que tienen par�metros de tipo
' char * ' usadas para recibir en ellas una cadena de caracteres, la clase CString se puede usar aqu� con las funciones GetBuffer() y ReleaseBuffer(), pero me obliga a limitar mi cadena de caracteres a un n�mero fijo y si la cadena que voy a recibir es mas larga, empiezan los problemas.
Gracias,
William Gonz�les S.
ReplyComment-out "#include NoDump.h" ( Answer from Joachim)
Posted by Legacy on 02/05/1999 12:00amOriginally posted by: Jong-Yun Moon
Comment-out "#include NoDump.h".
When I asked to Joachim, he told me that it was just for debugging, so should comment-out.
ReplyI Don't Know....NoDump.h....Please Help Me!!!
Posted by Legacy on 01/22/1999 12:00amOriginally posted by: Lee Jung Ryong
It's important work..
ReplyI must know rapidly What "NoDump.h" is working for...
And, Please Let me Know where to get it...
Please Help me....