Mega Code Archive
How to read text from a PDF doc without using ActiveX
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Title: How to read text from a PDF doc without using ActiveX
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, OleCtrls, acrobat_tlb;
type
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
OpenDialog1: TOpenDialog;
GroupBox1: TGroupBox;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Label5: TLabel;
procedure Button1Click(Sender: TObject);
private
{ Private-Deklarationen }
public
{ Public-Deklarationen }
end;
var
Form1: TForm1;
implementation
uses ComObj;
{$R *.dfm}
{$TYPEDADDRESS OFF} //muss so sein (this have to be)
var
PDDoc: Acrobat_TLB.CAcroPDDoc;
PDPage: Variant;
PDHili: Variant;
PDTextS: Variant;
acrobat: Variant;
Result: Boolean;
NTL, i, j, Pagecount: Integer;
zeilen: string;
stichwortcounter: Integer;
Size: Integer;
gesamtstring: AnsiString;
zwreal: Real;
procedure TForm1.Button1Click(Sender: TObject);
function removecrlf(workstring: string): string;
var
i: Integer;
begin
removecrlf := '';
for i := 0 to Length(workstring) do
begin
if workstring[i] = #13 then
workstring[i] := ' ';
if workstring[i] = #10 then
workstring[i] := ' ';
end;
removecrlf := workstring;
end;
begin
if not opendialog1.Execute then Exit;
memo1.Clear;
gesamtstring := '';
stichwortcounter := 0;
Size := 0;
try
acrobat := CreateOleObject('AcroExch.pdDoc');
Result := acrobat.Open(opendialog1.FileName);
if Result = False then
begin
messagedlg('Kann Datei nicht ?ffnen', mtWarning, [mbOK], 0);
Exit;
end;
for j := 0 to acrobat.GetNumPages - 1 do
begin
memo1.Lines.Add('----------------------------------------------');
PDPage := acrobat.acquirePage(j);
PDHili := CreateOleObject('AcroExch.HiliteList');
Result := PDHili.Add(0, 4096);
PDTextS := PDPage.CreatePageHilite(PDHili);
ntl := PDTextS.GetNumText;
for i := 0 to ntl - 1 do
begin
zeilen := PDTextS.GetText(i);
if (Length(zeilen) 0) and (zeilen '') then
memo1.Lines.Add(removecrlf(zeilen));
gesamtstring := gesamtstring + removecrlf(zeilen);
Size := Size + SizeOf(zeilen);
Inc(stichwortcounter);
Application.ProcessMessages;
end;
pdhili := Unassigned;
pdtextS := Unassigned;
pdpage := Unassigned;
label2.Caption := IntToStr(stichwortcounter);
label4.Caption := IntToStr(Size);
label2.Refresh;
label4.Refresh;
end; //for i to pagecount
except
on e: Exception do
begin
messagedlg('Fehler: ' + e.Message, mtError, [mbOK], 0);
Exit;
end;
end;
if Size 1024 then
begin
zwreal := Size / 1024;
str(zwreal: 2: 1,zeilen);
label4.Caption := zeilen;
label5.Caption := 'KB';
end;
memo1.Lines.SaveToFile(Extractfilepath(Application.exename) + '\debug.txt');
end;
end.
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