请问字符分割的问题
有这样一个字符
temp:='a = ''2'' or b = ''3'' and c = ''4'' or d = ''5'''
字符or 跟 and 是之间位置是随意调换
请问现在如何把字符temp分割成
a='2' or
b='3' and
c='4' or
d='5
谢谢！
[解决办法]
unit Unit13;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm13 = class(TForm)
edt1: TEdit;
btn1: TButton;
mmo1: TMemo;
procedure btn1Click(Sender: TObject);
private
procedure Split_And(Str : string);
{ Private declarations }
public
{ Public declarations }
end;
var
Form13: TForm13;
implementation
const
S_OR = ' or ';
S_AND = ' and ';
{$R *.dfm}
procedure TForm13.Split_And(Str : string);
procedure Split_Or(Str : string);
var
index : integer;
begin
index := Pos(S_OR, Str);
while index > 0 do
begin
mmo1.Lines.Add(Copy(Str, 1, index + Length(S_OR) - 1));
Str := Copy(Str, index + Length(S_OR), Length(Str));
index := Pos(S_OR, Str);
end;
mmo1.Lines.Add(Str);
end;
var
index : integer;
begin
index := Pos(S_AND, Str);
while index > 0 do
begin
Split_Or(Copy(Str, 1, index + Length(S_AND) - 1));
Str := Copy(Str, index + Length(S_AND), Length(Str));
index := Pos(S_AND, Str);
end;
Split_Or(Str);
end;
procedure TForm13.btn1Click(Sender: TObject);
begin
mmo1.Clear;
Split_And(edt1.Text);
end;
end.
