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{
Dummy process.inc - the simplest version based on SysUtils.ExecuteProcess
}
uses
Exec, AmigaDos, Utility;
Resourcestring
SNoCommandLine = 'Cannot execute empty command-line';
SErrCannotExecute = 'Failed to execute %s : %d';
SErrNoSuchProgram = 'Executable not found: "%s"';
procedure TProcess.CloseProcessHandles;
begin
end;
Function TProcess.PeekExitStatus : Boolean;
begin
Result := true; (* Dummy version assumes always synchronous execution *)
end;
function GetNextWordPos (const S: string): integer;
const
WhiteSpace = [' ', #9, #10, #13];
Literals = ['"', ''''];
var
WStart: integer;
InLiteral: boolean;
LastLiteral: char;
begin
WStart := 1;
(* Skip whitespaces at the beginning *)
while (WStart <= Length (S)) and (S [WStart] in WhiteSpace) do
Inc (WStart);
InLiteral := false;
LastLiteral := #0;
while (WStart <= Length (S)) and
(not (S [WStart] in WhiteSpace) or InLiteral) do
begin
if S [WStart] in Literals then
if InLiteral then
InLiteral := not (S [WStart] = LastLiteral)
else
begin
InLiteral := true;
LastLiteral := S [WStart];
end;
Inc (WStart);
end;
(* Skip whitespaces at the end *)
while (WStart <= Length (S)) and (S [WStart] in WhiteSpace) do
Inc (WStart);
Result := WStart;
end;
function MaybeQuote (const S: string): string;
begin
if (Pos (' ', S) <> 0) then
Result := '"' + S + '"'
else
Result := S;
end;
var
UID: Integer = 0;
{$ifdef MorphOS}
const
BUF_LINE = 0; // flush on \n, etc
BUF_FULL = 1; // never flush except when needed
BUF_NONE = 2; // no buffering
{$endif}
Procedure TProcess.Execute;
var
I: integer;
ExecName, FoundName: string;
E2: EProcess;
OrigDir: string;
Params: string;
TempName: string;
cos: BPTR;
{$ifdef MorphOS}
inA, inB, OutA, OutB: BPTR;
Res: Integer;
{$endif}
begin
if (ApplicationName = '') and (CommandLine = '') and (Executable = '') then
raise EProcess.Create (SNoCommandline);
if (FApplicationName <> '') then
ExecName := FApplicationName;
if (FCommandLine <> '') then
begin
Params := FCommandLine;
if ExecName = '' then
begin
I := GetNextWordPos (Params);
ExecName := Copy (Params, 1, Pred (I));
ExecName := Trim (ExecName);
Delete (Params, 1, Pred (I));
end
else if Copy (FCommandLine, 1, Length (ExecName)) = ExecName then
Delete (Params, 1, Succ (Length (ExecName)))
else
Delete (Params, 1, Pred (GetNextWordPos (Params)));
Params := Trim (Params);
end
else
for I := 0 to Pred (Parameters.Count) do
Params := Params + ' ' + MaybeQuote (Parameters [I]);
if (FExecutable <> '') and (ExecName = '') then
ExecName := Executable;
if not FileExists (ExecName) then
begin
FoundName := ExeSearch (ExecName, '');
if FoundName <> '' then
ExecName := FoundName
else
raise EProcess.CreateFmt (SErrNoSuchProgram, [ExecName]);
end;
if (FCurrentDirectory <> '') then
begin
GetDir (0, OrigDir);
ChDir (FCurrentDirectory);
end;
try
{$ifdef MorphOS}
if (poUsePipes in Options) and (not (poWaitOnExit in Options)) then
begin
FProcessID := 0;
// Pipenames, should be unique
TempName := 'PIPE:PrO_' + HexStr(Self) + HexStr(GetTickCount, 8);
inA := DOSOpen(PChar(TempName), MODE_OLDFILE);
inB := DOSOpen(PChar(TempName), MODE_NEWFILE);
TempName := TempName + 'o';
outA := DOSOpen(PChar(TempName), MODE_OLDFILE);
outB := DOSOpen(PChar(TempName), MODE_NEWFILE);
// set buffer for all pipes
SetVBuf(inA, nil, BUF_NONE, -1);
SetVBuf(inB, nil, BUF_LINE, -1);
SetVBuf(outA, nil, BUF_NONE, -1);
SetVBuf(outB, nil, BUF_LINE, -1);
// the actual Start of the command with given parameter and streams
Res := SystemTags(PChar(ExecName + ' ' + Params),
[SYS_Input, AsTag(outA),
SYS_Output, AsTag(inB),
SYS_Asynch, AsTag(True),
TAG_END]);
// the two streams will be destroyed by system, we do not need to care about
// the other two we will destroy when the PipeStreams they are attached to are destroyed
if Res <> -1 then
begin
FProcessID := 1;
CreateStreams(THandle(outB), THandle(inA),0);
end
else
begin
// if the command did not start, we need to delete all Streams
if outB <> BPTR(0) then DosClose(outB);
if outA <> BPTR(0) then DosClose(outA);
if inB <> BPTR(0) then DosClose(inB);
if inA <> BPTR(0) then DosClose(inA);
end;
end
else
{$endif}
begin
// if no streams needed we still use the old sychronous way
FProcessID := 0;
cos := BPTR(0);
repeat
Inc(UID);
TempName := 'T:PrO_'+ HexStr(FindTask(nil)) + '_' + IntToHex(UID,8);
until not FileExists(TempName);
//sysdebugln('TProcess start: "' + ExecName + ' ' + Params+'" >' + TempName);
cos := AmigaDos.DosOpen(PChar(TempName), MODE_READWRITE);
FExitCode := LongInt(amigados.Execute(PChar(ExecName + ' ' + Params), BPTR(0), cos));
DosSeek(cos, 0, OFFSET_BEGINNING);
CreateStreams(0, THandle(cos),0);
end;
//FExitCode := ExecuteProcess (ExecName, Params);
except
(* Normalize the raised exception so that it is aligned to other platforms. *)
On E: EOSError do
begin
raise EProcess.CreateFmt (SErrCannotExecute, [FCommandLine, E.ErrorCode]);
if (FCurrentDirectory <> '') then
ChDir (OrigDir);
end;
end;
if (FCurrentDirectory <> '') then
ChDir (OrigDir);
end;
Function TProcess.WaitOnExit : Boolean;
begin
Result:=True;
end;
Function TProcess.WaitOnExit(Timeout : DWord) : Boolean;
begin
Result:=True;
end;
Function TProcess.Suspend : Longint;
begin
Result:=0;
end;
Function TProcess.Resume : LongInt;
begin
Result:=0;
end;
Function TProcess.Terminate(AExitCode : Integer) : Boolean;
begin
Result:=False;
end;
Procedure TProcess.SetShowWindow (Value : TShowWindowOptions);
begin
end;
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