发信人: plenilune88(望月)
整理人: soaringbird(2002-02-02 09:05:14), 站内信件
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function LeftStr(S:string;Count:integer):string;
begin //获取字符串左边起n个字符
LeftStr:=Copy(s,1,Count);
end;
function RightStr(S:string;Count:integer):string;
begin //获取字符串右边起n个字符
RightStr:=Copy(s,Length(s)-Count+1,Count);
end;
function ReplaceStr(S:string;OldStr,NewStr:string):string;
var i,j:integer;
ss:string;
begin //替换字符串 (其实Delphi已经提供对应的函数了StringReplace）
i:=1;
ss:='';
j:=length(OldStr);
while i<=length(s) do
begin
if LowerCase(copy(s,i,j))=LowerCase(OldStr)
then
begin
ss:=ss+NewStr;
inc(i,j);
end
else
begin
ss:=ss+s[i];
inc(i,1);
end;
end;
Result:=ss;
end;
function LTrim(S:string):string;
begin //删除字符串左边空格
s:=s+'*';
s:=Trim(s);
Delete(s,length(s),1);
end;
function RTrim(S:string):string;
begin //删除字符串右边空格
s:='*'+s;
s:=Trim(s);
Delete(s,1,1);
end;
function LDelete(S,Sub:string):string;
begin //删除字符串左边的某一所有字符
while LeftStr(S,1)=sub do
Delete(S,1,1);
LDelete:=s;
end;
function RDelete(S,Sub:string):string;
begin //删除字符串右边的某一所有字符
sub:=copy(sub,1,1);
while RightStr(S,1)=sub do
Delete(S,length(s),1);
RDelete:=s;
end;
function MDelete(S,Sub:string):string;
begin //删除字符串中包含的某一所有字符
sub:=copy(sub,1,1);
while Pos(sub,s)>0 do
Delete(S,Pos(sub,s),1);
MDelete:=s;
end;
function GetCodeNo(NoStr:string;NoLen:integer):string;
begin //生成一个在数字前面自动补零编码
NoStr:=Trim(NoStr);
Result:=copy('00000000000000000000',1,NoLen-length(NoStr))+NoStr;
end;
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