StrUtils

  StrUtils包含大多数字符串操作 

//类似  AAAA 类似于ABAAA
function ResemblesText(const AText, AOther: string): Boolean; overload;
function AnsiResemblesText(const AText, AOther: string): Boolean; overload;

//包含 
function ContainsText(const AText, ASubText: string): Boolean; inline; overload;
function AnsiContainsText(const AText, ASubText: string): Boolean; overload;

//是否以ASubText开始
function StartsText(const ASubText, AText: string): Boolean; inline; overload;
function AnsiStartsText(const ASubText, AText: string): Boolean; overload;

//是否以ASubText结束
function EndsText(const ASubText, AText: string): Boolean; inline; overload;
function AnsiEndsText(const ASubText, AText: string): Boolean; overload;

//替换字符串
function ReplaceText(const AText, AFromText, AToText: string): string; inline; overload;
function AnsiReplaceText(const AText, AFromText, AToText: string): string; overload;

//匹配字符串
function MatchText(const AText: string; const AValues: array of string): Boolean; overload;
function AnsiMatchText(const AText: string; const AValues: array of string): Boolean; overload;

//返回索引值
function IndexText(const AText: string; const AValues: array of string): Integer; overload;
function AnsiIndexText(const AText: string; const AValues: array of string): Integer; overload;

//以上函数不区分大小写

//下面函数区分大小写
function ContainsStr(const AText, ASubText: string): Boolean; inline; overload;
function AnsiContainsStr(const AText, ASubText: string): Boolean; overload;

function StartsStr(const ASubText, AText: string): Boolean; inline; overload;
function AnsiStartsStr(const ASubText, AText: string): Boolean; overload;

function EndsStr(const ASubText, AText: string): Boolean; inline; overload;
function AnsiEndsStr(const ASubText, AText: string): Boolean; overload;

function ReplaceStr(const AText, AFromText, AToText: string): string; inline; overload;
function AnsiReplaceStr(const AText, AFromText, AToText: string): string; overload;

function MatchStr(const AText: string; const AValues: array of string): Boolean; overload;
function AnsiMatchStr(const AText: string; const AValues: array of string): Boolean; overload;

function IndexStr(const AText: string; const AValues: array of string): Integer; overload;
function AnsiIndexStr(const AText: string; const AValues: array of string): Integer; overload;

//字符串重复次数
function DupeString(const AText: string; ACount: Integer): string; overload;

//反转字符串
function ReverseString(const AText: string): string; overload;
function AnsiReverseString(const AText: string): string; overload;

function StuffString(const AText: string; AStart, ALength: Cardinal;
  const ASubText: string): string; overload;

//随机从数组中取字符串
function RandomFrom(const AValues: array of string): string; overload;


//功能和三元操作一样 a > b ? 0:1
function IfThen(AValue: Boolean; const ATrue: string;
  AFalse: string = ''): string; overload; inline;

//分离字符串返回字符串数组
function SplitString(const S, Delimiters: string): TStringDynArray;

//从左边截取字符串
function LeftStr(const AText: AnsiString; const ACount: Integer): AnsiString; overload;
function LeftStr(const AText: WideString; const ACount: Integer): WideString; overload;

//从右边截取字符串
function RightStr(const AText: AnsiString; const ACount: Integer): AnsiString; overload;
function RightStr(const AText: WideString; const ACount: Integer): WideString; overload;

//从中间截取字符串
function MidStr(const AText: AnsiString; const AStart, ACount: Integer): AnsiString; overload;
function MidStr(const AText: WideString; const AStart, ACount: Integer): WideString; overload;