正如 Tony 上面提到的，我还建议使用分隔字符串。除了，不仅仅是分隔，而是使用更多的解析技术。如果我理解正确，您为格式化所做的这个函数不应在参数中包含数组，但从技术上讲，这并不意味着我们根本不能在任何地方使用数组（数组非常适合用于这种情况速度快）。
此方法将允许在参数中传递几乎任何内容，包括分隔符，而不会影响输出。这个想法是做A）参数字符串的大小，B）大小和参数之间的分隔符，C）参数字符串......并重复......
const
MY_DELIM = '|'; //Define a deliminator
type
TStringArray = array of String;
/////////////////////////////////
//Convert an array of string to a single parsable string
// (Will be the first step before calling your format function)
function MakeParams(const Params: array of String): String;
var
X: Integer;
S: String;
begin
Result:= '';
for X:= 0 to Length(Params)-1 do begin
S:= Params[X];
Result:= Result + IntToStr(Length(S)) + MY_DELIM + S;
end;
end;
//Convert a single parsable string to an array of string
// (Will be called inside your format function to decode)
// This is more or less called parsing
function ExtractParams(const Params: String): TStringArray;
var
S: String; //Used for temporary parsing
T: String; //Used for copying temporary data from string
P: Integer; //Used for finding positions
C: Integer; //Used for keeping track of param count
Z: Integer; //Used for keeping track of parameter sizes
begin
S:= Params; //Because we'll be using 'Delete' command
C:= 0; //Set count to 0 to start
SetLength(Result, 0); //Prepare result array to 0 parameters
while Length(S) > 0 do begin //Do loop until nothing's left
P:= Pos(MY_DELIM, S); //Get position of next deliminator
if P > 1 then begin //If deliminator was found...
C:= C + 1; //We have a new parameter
SetLength(Result, C); //Set array length to new parameter count
T:= Copy(S, 1, P-1); //Get all text up to where deliminator was found
Delete(S, 1, P); //Delete what we just copied, including deliminator
Z:= StrToIntDef(T, 0); //Convert T:String to Z: Integer for size of parameter
T:= Copy(S, 1, Z); //Get all text up to 'Z' (size of parameter)
Delete(S, 1, Z); //Delete what we just copied
Result[C-1]:= T; //Assign the new parameter to end of array result
end else begin //If deliminator was NOT found...
S:= ''; //Clear S to exit loop (possible bad format if this happens)
end;
end;
end;
//Main formatting routine
function MyFormat(const Input: String; const Params: String): String;
var
A: TStringArray;
X: Integer;
S: String;
P: Integer;
R: String;
begin
R:= Input;
A:= ExtractParams(Params);
//At this point, A contains all the parameters parsed from 'Params'
for X:= 0 to Length(A)-1 do begin
S:= A[X];
P:= Pos('%s', R);
if P > 0 then begin
Delete(R, P, 2);
Insert(S, R, P);
end;
end;
Result:= R;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
Pars: String;
begin
Pars:= MakeParams(['this', 'that', 'something else']);
Edit1.Text:= MyFormat('%s is %s but not %s', Pars);
end;