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program analyzer;
{$mode objfpc}{$H+}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
classes, sysUtils, custApp, valuesunit, lowlevelunit, dateutils;
type
tOption = (oHelp, oAcceleration, oPosition, oOutput);
tOptionMeta = record
long: string;
short: char;
value: byte; // bit 0: kann Wert haben; bit 1: muss Wert haben
end;
tOptionContent = record
typ: tOption;
hasValue: boolean;
value: string;
end;
{ TAnalyzer }
tAnalyzer = class(tCustomApplication)
protected
options: array of tOptionContent;
oCnt: array[tOption] of longint;
procedure doRun; override;
procedure parseOptions;
function optionArgument(o: tOption; i: longint): string;
public
constructor create(theOwner: tComponent); override;
destructor destroy; override;
procedure writeHelp; virtual;
end;
const
optionsMeta: array[tOption] of tOptionMeta = (
(long: 'help'; short: 'h'; value: $00),
(long: 'acceleration'; short: 'a'; value: $03),
(long: 'position'; short: 'p'; value: $03),
(long: 'output'; short: 'o'; value: $03)
);
{ TAnalyzer }
procedure tAnalyzer.doRun;
var
i: longint;
values: array of array[boolean] of tValues;
begin
if oCnt[oHelp]>0 then begin
writeHelp;
terminate;
exit;
end;
if oCnt[oAcceleration]=0 then begin
writeln('error: required option ''-a'' not given');
writeHelp;
halt(1);
end;
if oCnt[oAcceleration]<>oCnt[oPosition] then begin
writeln('error: option ''-p'' not given equally often as option ''-a''');
writeHelp;
halt(1);
end;
if oCnt[oOutput]<>1 then begin
writeln('error: required option ''-o'' not given exactly once');
writeHelp;
halt(1);
end;
for i:=0 to oCnt[oAcceleration]-1 do begin
if not fileexists(optionArgument(oAcceleration,i)) then begin
writeln('Acceleration file '''+optionArgument(oAcceleration,i)+''' does not exist');
halt(1);
end;
if not fileexists(optionArgument(oPosition,i)) then begin
writeln('Position file '''+optionArgument(oPosition,i)+''' does not exist');
halt(1);
end;
end;
{ add your program here }
setlength(values,oCnt[oAcceleration]);
for i:=0 to length(values)-1 do begin
values[i,false]:=tValues.create;
values[i,false].readFromFile(optionArgument(oAcceleration,i));
values[i,true]:=tValues.create;
values[i,true].readFromFile(values[i,false].timeInterval,optionArgument(oPosition,i));
values[i,false].intersect(values[i,true]);
end;
for i:=0 to length(values)-1 do begin
values[i,false].free;
values[i,true].free;
end;
setlength(values,0);
// stop program loop
terminate;
end;
procedure tAnalyzer.parseOptions;
var
i,j,incre,jncre: longint;
s: string;
oTypen: array of byte; // 0 = argument; 1 = short option(s); 2 = long option
o: tOption;
begin
for o:=low(tOption) to high(tOption) do
oCnt[o]:=0;
setlength(oTypen,paramcount);
for i:=0 to length(oTypen)-1 do
if copy(paramstr(i+1),1,2)='--' then
oTypen[i]:=2
else if copy(paramstr(i+1),1,1)='-' then
oTypen[i]:=1
else
oTypen[i]:=0;
setlength(options,0);
i:=0;
while i<length(oTypen) do begin
incre:=1;
s:=paramstr(i+1);
case oTypen[i] of
0: begin
writeln('Spurious argument '''+s+''' at position '+inttostr(i+1));
halt(1);
end;
1: begin
delete(s,1,1);
j:=1;
while j<=length(s) do begin
jncre:=1;
setlength(options,length(options)+1);
options[length(options)-1].hasValue:=false;
options[length(options)-1].value:='';
options[length(options)-1].typ:=low(optionsMeta);
while options[length(options)-1].typ<high(optionsMeta) do begin
if (optionsMeta[options[length(options)-1].typ].short=s[j]) then
break;
inc(options[length(options)-1].typ);
end;
if (optionsMeta[options[length(options)-1].typ].short<>s[j]) then begin
writeln('Illegal option at position '+inttostr(i+1)+', character '+inttostr(j)+': '''+s[j]+'''');
writeHelp;
halt(1);
end;
if odd(optionsMeta[options[length(options)-1].typ].value) // may have value
and (((i<length(oTypen)-1) and (oTypen[i+1]=0)) or (j<length(s))) then begin // still arguments left
options[length(options)-1].hasValue:=true;
if j<length(s) then begin
options[length(options)-1].value:=copy(s,j+1,length(s));
jncre:=length(s);
end
else begin
options[length(options)-1].value:=paramstr(i+2);
inc(incre);
end;
end
else
options[length(options)-1].hasValue:=false;
if (not options[length(options)-1].hasValue) and odd(optionsMeta[options[length(options)-1].typ].value shr 1) then begin
writeln('Option '''+optionsMeta[options[length(options)-1].typ].short+''' at position '+inttostr(i+1)+', character '+inttostr(j)+' requires an argument!');
writeHelp;
halt(1);
end;
inc(oCnt[options[length(options)-1].typ]);
inc(j,jncre);
end;
end;
2: begin
delete(s,1,2);
setlength(options,length(options)+1);
if pos('=',s)>0 then begin
options[length(options)-1].value:=copy(s,pos('=',s)+1,length(s));
s:=copy(s,1,pos('=',s)-1);
options[length(options)-1].hasValue:=true;
end
else begin
options[length(options)-1].value:='';
options[length(options)-1].hasValue:=false;
end;
options[length(options)-1].typ:=low(optionsMeta);
while options[length(options)-1].typ<high(optionsMeta) do begin
if (optionsMeta[options[length(options)-1].typ].long<>'') and (optionsMeta[options[length(options)-1].typ].long=s) then
break;
inc(options[length(options)-1].typ);
end;
if (optionsMeta[options[length(options)-1].typ].long='') or (optionsMeta[options[length(options)-1].typ].long<>s) then begin
writeln('Illegal option at position '+inttostr(i+1)+': '''+s+'''');
writeHelp;
halt(1);
end;
if (not options[length(options)-1].hasValue) // no value yet
and odd(optionsMeta[options[length(options)-1].typ].value) // may have value
and (i<length(oTypen)-1) // still arguments left
and (oTypen[i+1]=0) then begin // next argument is no option
options[length(options)-1].hasValue:=true;
options[length(options)-1].value:=paramstr(i+2);
inc(incre);
end;
if options[length(options)-1].hasValue and not odd(optionsMeta[options[length(options)-1].typ].value) then begin
writeln('Option '''+optionsMeta[options[length(options)-1].typ].long+''' at position '+inttostr(i+1)+' does not take an argument!');
writeHelp;
halt(1);
end;
if (not options[length(options)-1].hasValue) and odd(optionsMeta[options[length(options)-1].typ].value shr 1) then begin
writeln('Option '''+optionsMeta[options[length(options)-1].typ].long+''' at position '+inttostr(i+1)+' requires an argument!');
writeHelp;
halt(1);
end;
inc(oCnt[options[length(options)-1].typ]);
end;
end{of case};
inc(i,incre);
end;
end;
function tAnalyzer.optionArgument(o: tOption; i: longint): string;
var
j: longint;
begin
for j:=0 to length(options)-1 do
if (options[j].typ=o) and options[j].hasValue then begin
dec(i);
if i<0 then begin
result:=options[j].value;
exit;
end;
end;
raise exception.create('Option '''+optionsMeta[o].long+''' not available '+inttostr(i+1)+' times');
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');
writeln('usage: ', exeName, ' -i input1 -i input2 -o output');
end;
var
application: tAnalyzer;
begin
application:=tAnalyzer.create(nil);
application.title:='analyzer';
application.run;
application.free;
end.
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