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Mu.LockStrings.pas
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Mu.LockStrings.pas
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unit Mu.LockStrings;
interface
uses
classes, SyncObjs;
type
TLockedStringlist = class(TObject)
private
FLock : TCriticalSection;
FStrings: Tstringlist;
function getCount(): integer;
public
constructor create;
destructor destroy; override;
function GetOne(var S: string): boolean;
function GetAll(st: Tstrings): boolean;
function add(S: string): boolean; overload;
function add(st: Tstrings): boolean; overload;
function put(S: string): boolean;
property count: integer read getCount;
procedure loadFromFile(afn: String);
procedure loadFromStream(astm: TStream);
end;
implementation
{ TLockedStringlist }
function TLockedStringlist.add(st: Tstrings): boolean;
begin
FLock.Enter;
try
FStrings.AddStrings(st);
finally
FLock.Leave;
end;
end;
constructor TLockedStringlist.create;
begin
FLock := TCriticalSection.create;
FStrings := Tstringlist.create;
inherited;
end;
destructor TLockedStringlist.destroy;
begin
// FLock.Enter;
FLock.Free;
FStrings.Free;
inherited destroy;
end;
function TLockedStringlist.GetAll(st: Tstrings): boolean;
begin
FLock.Enter;
try
try
if FStrings.count > 0 then
begin
st.Assign(FStrings);
FStrings.Clear;
result := true;
end else begin
// FStrings.Clear;
result := false;
end;
except
end;
finally
FLock.Leave;
end;
end;
function TLockedStringlist.GetOne(var S: string): boolean;
begin
FLock.Enter;
try
try
if FStrings.count > 0 then
begin
S := FStrings[0];
FStrings.Delete(0);
result := true;
end else begin
// FStrings.Clear;
result := false;
end;
except
end;
finally
FLock.Leave;
end;
end;
procedure TLockedStringlist.loadFromFile(afn: String);
begin
FLock.Enter;
try
FStrings.loadFromFile(afn);
finally
FLock.Leave;
end;
end;
procedure TLockedStringlist.loadFromStream(astm: TStream);
begin
FLock.Enter;
try
FStrings.loadFromStream(astm);
finally
FLock.Leave;
end;
end;
function TLockedStringlist.getCount(): integer;
begin
FLock.Enter;
try
result := FStrings.count;
finally
FLock.Leave;
end;
end;
function TLockedStringlist.add(S: string): boolean;
begin
FLock.Enter;
try
FStrings.add(S);
finally
FLock.Leave;
end;
end;
function TLockedStringlist.put(S: string): boolean;
begin
FLock.Enter;
try
FStrings.Insert(0, S);
finally
FLock.Leave;
end;
end;
end.