一些C++ 专用的字符串处理函数集

/*###############################################################################################*/ //# File Name : StringFunctions.cpp # //# Version : 1.0.1 # //# Created By : Technocrat (Technocrat498@yahoo.com) # //# Date : 3/20/02 # //# Download : http://www.codefans.net # //# Completed : W/I/P # //# Mod : 3/25/02 # //# Changed IsNumeric, Upcase & Lowercase To Have Loops To Use Pointers # //# Thanks To jim mcnamara # //# Does : Contains The Following Functions: # //# IsNumeric (Checks To See If A Char Or String Is Numeric) # //# Upcase (Uppercases A Char Or String) # //# Lowercase(Lowercases A Char Or String) # //# Trim (Trims The Spaces At The End Of A String Of Chars) # //# RTrim (Trims The Spaces To The Right Of A String Of Chars) # //# LTrim (Trims The Spaces To The Left Of A String Of Chars) # //# right (Trims Chars From Right To Left Of A String) # //# left (Trims Chars To From Left To Right Of A String) # //# mid (Trims Chars To From A Position To Right Of A String) # //# Notes : The Header File (StringFunctions.h) Must Be Included # //# Reason : To hold all these functions in a classes in one cpp so I can use them in any# //# program. # //# Thanks : Parksie, jim mcnamara, CornedBee, Kedaman and Zaei on the VB-World.net # //# C/C++ Forums for all their help with this and other C/C++ projects # //# Megatron on the VB-World.net Forums for helping me with more problems than # //# I care to count. With out his help I would have quit programming along # //# time ago. # /*###############################################################################################*/ /*-----------------------------*/ //Include #include "StringFunctions.h" /*-----------------------------*/ //Global /*-----------------------------*/ //.cpp Global /*-----------------------------*/ //.cpp Functions /*-----------------------------*/ /*##############################################################################################*/ /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ //| Function: IsNumeric() //| In: char *chString //| In Char Or String Of Chars //| Return: BOOL //| Notes: This Function Checks To Is If A Char Or A String Of Chars Is Numeric Or Not //| Example: char p[] = "5"; //| BOOL bRet = FALSE; //| bRet = IsNumeric(p); //Should Return True /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ BOOL IsNumeric(char *chString) { /*>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/ char *buf; //Temp Char VAR /*<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<*/ buf = chString; //Loop Through The Pointer Using The Inline Function IsDigit while (IsDigit(buf)) { buf++; //Increase The Pointer } return (BOOL) (*buf==0x00); } /*##############################################################################################*/ /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ //| Function: IsNumeric() //| Overload Function //| In: string *stString //| In String Pointer //| Return: BOOL //| Notes: This Function Checks To Is If A String Of Chars Is Numeric Or Not //| Example: string p = "5"; //| BOOL bRet = FALSE; //| bRet = IsNumeric(&p); //Should Return True /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ BOOL IsNumeric(string *stString) { /*>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/ static char chTemp; //Temp Char VAR /*<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<*/ //Loop Through The Length Of The Input for(unsigned int i=0; i < stString->length(); i++ ) { //Copy One Char At A Time To The Temp Char VAR strcpy(&chTemp,stString->substr(i,1).c_str()); //If The Inline Function IsDigit Returns A False And It Is Not A . if(!IsDigit(&chTemp)) return FALSE; } return TRUE; } /*##############################################################################################*/ /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ //| Function: Upcase() //| In: char *chString //| In Char Or String Of Chars //| Return: None //| Notes: This Function Uppercases A Char Or Sting Of Chars //| Example: char p[] = "t"; //| Upcase(p); //Should Chang p To T /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ void Upcase(char *chString) { /*>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/ string stTemp = ""; //Temp String VAR char *buf; unsigned int i =0; /*<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<*/ buf = chString; //Loop Through The Length Of The Pointer while(*buf != 0x00) { //Make The Temp VAR Set To The Uppercase Of The Input VAR stTemp += ToUpper(chString[i]); buf++; i++; } try { //Copy Back strcpy(chString,stTemp.c_str()); } catch(...) { return; } } /*##############################################################################################*/ /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ //| Function: Upcase() //| Overload Function //| In: string *stString //| In Char Or String Of Chars //| Return: None //| Notes: This Function Uppercases A Char Or Sting Of Chars //| Example: string p = "t"; //| Upcase(p); //Should Chang p To T /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ void Upcase(string *stString) { /*>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/ string stTemp = ""; //Temp String VAR static char chTemp; //Temp Char VAR /*<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<*/ //Loop Through The Length Of The Input for(unsigned int i=0; i<stString->size(); i++) { //Copy One Char At A Time To The Temp Char VAR strcpy(&chTemp,stString->substr(i,1).c_str()); //Make The Temp VAR Set To The Uppercase Of The Input VAR stTemp += ToUpper(chTemp); } try { //Copy Back memcpy(stString,&stTemp,sizeof(stTemp)); } catch(...) { return; } } /*##############################################################################################*/ /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ //| Function: Lowercase() //| In: char *chString //| In Char Or String Of Chars //| Return: None //| Notes: This Function Lowercases A Char Or Sting Of Chars //| Example: char p[] = "T"; //| Lowercase(p); //Should Chang p To t /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ void Lowercase(char *chString) { /*>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/ string stTemp = ""; //Temp String VAR char *buf; unsigned int i =0; /*<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<*/ buf = chString; //Loop Through The Length Of The Pointer while(*buf != 0x00) { //Make The Temp VAR Set To The Lowercase Of The Input VAR stTemp += ToLower(chString[i]); buf++; i++; } //Copy Back strcpy(chString,stTemp.c_str()); } /*##############################################################################################*