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program analyzer;
{$mode objfpc}{$H+}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
classes, sysUtils, custApp
{ you can add units after this };
type
tOption = (oHelp, oInput);
{ TAnalyzer }
tAnalyzer = class(tCustomApplication)
protected
options: array of tOption;
oValues: array of string;
procedure doRun; override;
procedure parseOptions;
procedure illegalOption(i: longint);
public
constructor create(theOwner: tComponent); override;
destructor destroy; override;
procedure writeHelp; virtual;
end;
const
shortOptions: array[tOption] of char =
('h','i');
longOptions: array[tOption] of string = (
'help',
'input'
);
optionValue: array[tOption] of byte = ( // bit 0: kann Wert haben; bit 1: muss Wert haben
0,
3
);
{ TAnalyzer }
procedure tAnalyzer.doRun;
var
errorMsg: string;
begin
// quick check parameters
errorMsg:=checkOptions('hi:', 'help input:');
if errorMsg<>'' then begin
showException(Exception.Create(ErrorMsg));
halt(1);
end;
// parse parameters
if hasOption('h', 'help') then begin
writeHelp;
terminate;
exit;
end;
if not hasOption('i','input') then begin
writeln('error: required option ''-i'' not given');
writeHelp;
halt(1);
end;
{ add your program here }
writeln(''''+getOptionValue('i','input')+'''');
// stop program loop
terminate;
end;
procedure tAnalyzer.parseOptions;
var
i: longint;
s,t: string;
o: tOption;
v,gefunden: boolean;
begin
setlength(options,0);
setlength(oValues,0);
i:=1;
while i<=paramcount do begin
s:=paramstr(i);
if copy(s,1,1)<>'-' then
illegalOption(i);
delete(s,1,1);
gefunden:=false;
if copy(s,1,1)='-' then begin // long option
delete(s,1,1);
if pos('=',s)>0 then begin
t:=copy(s,pos('=',s)+1,length(s));
s:=copy(s,1,pos('=',s)-1);
v:=true;
end
else begin
t:='';
v:=false;
end;
for o:=low(longOptions) to high(longOptions) do
if (longOptions[o]<>'') and (longOptions[o]=s) and ((not v) or odd(optionValue[o])) then begin
gefunden:=true;
break;
end;
end;
if not gefunden then
illegalOption(i);
inc(i);
end;
end;
procedure tAnalyzer.illegalOption(i: longint);
begin
writeln('Illegal option at position '+inttostr(i)+': '''+paramstr(i)+'''');
writeHelp;
halt(1);
end;
constructor tAnalyzer.create(theOwner: tComponent);
begin
inherited create(theOwner);
parseOptions;
stopOnException:=true;
end;
destructor tAnalyzer.destroy;
begin
inherited destroy;
end;
procedure tAnalyzer.writeHelp;
begin
{ add your help code here }
writeln('usage: ', exeName, ' -h');
end;
var
application: tAnalyzer;
begin
application:=tAnalyzer.create(nil);
application.title:='analyzer';
application.run;
application.free;
end.
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