Mega Code Archive
Getting parameter values - updated
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Getting parameter values with delphi is extremely easy, you have the ParamStr and ParamCount functions to work with, also there is FindCmdLineSwitch function which will tell you if a certain parameter is being used.
however if you use a parameter like
/paramname:paramvalue
then the following function will be useful when getting these parameter values.
(* GetParameterValue
GetParameterValue will return the value associated with a parameter name in the form of
/paramname:paramvalue
-paramname:paramvalue
and
/paramname
-paramname
ParamName - Name of the parameter (paramname)
SwitchChars - Parameter switch identifiers (/ or -)
Seperator - The char that sits between paramname and paramvalue (:)
Value - The value of the parameter (paramvalue) if it exists
Returns - Boolean, true if the parameter was found, false if parameter does not exist
typical usage
Parameter
-P=c:\temp\
-S
GetParameterValue('p', ['/', '-'], '=', sValue);
sValue will contain c:\temp\
*)
function GetParameterValue(const ParamName: string; SwitchChars: TSysCharSet;
Seperator: Char; var Value: string): Boolean;
var
I, Sep: Longint;
S: string;
begin
Result := False;
Value := '';
for I := 1 to ParamCount do
begin
S := ParamStr(I);
if Length(S) > 0 then
if S[1] in SwitchChars then
begin
Sep := Pos(Seperator, S);
case Sep of
0:
begin
if CompareText(Copy(S, 2, Length(S) -1), ParamName) = 0 then
begin
Result := True;
Break;
end;
end;
1..MaxInt:
begin
if CompareText(Copy(S, 2, Sep -2), ParamName) = 0 then
begin
Value := Copy(S, Sep + 1, Length(S));
Result := True;
Break;
end;
end;
end; //case
end;
end;
end;
updated on 27 Nov 03
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