123,4534,sds,200121510037692,0
123,453fdf4,sds,200220710513343,1
123,4534,sds,200220710513343,1
123,4534,sds,200220710513343,1
1df3,34,sds,200220710513343,1
123,4534,sds,200220710513344,1
123,4534,sds,200220710513344,1
123,4534,sds,200220710513344,2
1er23,4534,sds,200223210325997,2
123,4534,sds,200223210463443,2
123,453dfg4,sds,20032011034322377,2
12erter3,4534,sds,200320510211160,2
123,4534,sds,200320510371118,2
12ert3ert,4534,sds,200320510375232,2
123,4534,sds,200320510475891,3
123,4534,sds,200320510499806,3
123,4534,sds,200320510507023,3
123,4534,sds,200320510513821,3
1dfgdf23,4534,sds,200320532000313,3
123,4534,sds,2003212101030030,2
123,4534,sds,2003212101030310,3
123,4534,sds,20032121010313880,2
123,4534,sds,2003212101041020,4
1ert23,4534,sds,2003212101132790,4
123,4534,sds,2003212101154600,4
123,4534,sds,200321232009602,4
123,4534,sds,200321410025412,4
123,4534,sds,200321410028958,4
1ert23,4534,sds,200321410029462,4
123,4534,sds,200321410047129,4
123,4534,sds,200321510084672,4
123,4534,sds,200321510211516,4
123,4534,sds,200321510213759,4
123,4534,sds,200322410501075,4
123,4534,sds,200322410501077,4
123,4534,sds,200322410501077,4=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
将一个文本文件第4列的数据按照要求删除,比如Edit1.text中输入077,则在回车后,这个TXT文本,删除第4列尾数为077的记录行。请问如何实现?
123,453fdf4,sds,200220710513343,1
123,4534,sds,200220710513343,1
123,4534,sds,200220710513343,1
1df3,34,sds,200220710513343,1
123,4534,sds,200220710513344,1
123,4534,sds,200220710513344,1
123,4534,sds,200220710513344,2
1er23,4534,sds,200223210325997,2
123,4534,sds,200223210463443,2
123,453dfg4,sds,20032011034322377,2
12erter3,4534,sds,200320510211160,2
123,4534,sds,200320510371118,2
12ert3ert,4534,sds,200320510375232,2
123,4534,sds,200320510475891,3
123,4534,sds,200320510499806,3
123,4534,sds,200320510507023,3
123,4534,sds,200320510513821,3
1dfgdf23,4534,sds,200320532000313,3
123,4534,sds,2003212101030030,2
123,4534,sds,2003212101030310,3
123,4534,sds,20032121010313880,2
123,4534,sds,2003212101041020,4
1ert23,4534,sds,2003212101132790,4
123,4534,sds,2003212101154600,4
123,4534,sds,200321232009602,4
123,4534,sds,200321410025412,4
123,4534,sds,200321410028958,4
1ert23,4534,sds,200321410029462,4
123,4534,sds,200321410047129,4
123,4534,sds,200321510084672,4
123,4534,sds,200321510211516,4
123,4534,sds,200321510213759,4
123,4534,sds,200322410501075,4
123,4534,sds,200322410501077,4
123,4534,sds,200322410501077,4=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
将一个文本文件第4列的数据按照要求删除,比如Edit1.text中输入077,则在回车后,这个TXT文本,删除第4列尾数为077的记录行。请问如何实现?
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var
i,k,l: integer;
s: string;
begin
memo1.Lines.LoadFromFile('c:\ttt.txt');
i := 0;
while i < memo1.Lines.Count do
begin
s := memo1.Lines[i];
k := pos(',',s);
l := length(s);
if l < 0 then continue;
s := copy(s,k+1,l);
k := pos(',',s);
l := length(s);
if l < 0 then continue;
s := copy(s,k+1,l);
k := pos(',',s);
l := length(s);
if l < 0 then continue;
s := copy(s,k+1,l);
k := pos(',',s);
l := length(s);
if l < 0 then continue;
s := copy(s,0,k-1);
l := length(s);
k := length(edit1.text);
s := copy(s,l-k,k);
if s = edit1.text then
memo1.Lines.Delete(i)
else i := i+1;
end;
memo1.Lines.SaveToFile('c:\ttt.txt');
end;
//filename:文件名
//strFlag:删除标记
//iCol:删除列
var
liSource,liTmp:TStrings;
i:integer;
begin
liSource:=TStringList.Create;
liTmp:=TstringList.create;
try
liSource.loadfromfile(filename);
//for i:=0 to liSource.count -1 do
i:=0;
while i<liSource.Count do
begin
liTmp.DelimitedText:=liSource.Strings[i];
if Pos(strFlag,liTmp.Strings[iCol-1])>1 then
liSource.Delete(i)
else
inc(i);
end; liSource.SaveToFile(filename);
finally
freeandnil(liSource);
freeandnil(liTmp);
end;
end;
调用 myDelete('c:\1.txt','077',4);
mRight: string): Integer;
var
I: Integer;
vStrings: TStrings;
begin
Result := 0;
if not Assigned(mStrings) then Exit;
if mCol < 0 then Exit;
vStrings := TStringList.Create;
mStrings.BeginUpdate;
try
for I := mStrings.Count - 1 downto 0 do
begin
vStrings.DelimitedText := mStrings[I];
if (vStrings.Count > mCol) and
(Pos(mRight + ',', vStrings[mCol] + ',') > 0) then
mStrings.Delete(I);;
end;
finally
vStrings.Free;
mStrings.EndUpdate;
end;
end; { DeleteTerm }procedure TForm1.Button1Click(Sender: TObject);
begin
DeleteTerm(Memo1.Lines, 3, Edit1.Text);
end;