AutoIt Requires Chilkat v11.7.0+

Extract Text from a PDF that Forbids Copying

See more PDF Text Extraction Examples

Demonstrates a PDF that opens without a password but whose permissions do not allow copying text. The "text", "markdown", "search" and "tables" operations fail with that reason; "assess" always works. Loading the PDF with the OwnerPassword property set grants owner rights, and extraction works. AutoIt

Local $bSuccess = False

;  This example requires the Chilkat API to have been previously unlocked.
;  See Global Unlock Sample for sample code.

;  The PDF used in this example (owner password: owner-secret; copying not permitted) is available at no_copy_permission.pdf

$oPdf = ObjCreate("Chilkat.Pdf")
$oJson = ObjCreate("Chilkat.JsonObject")
$oJsonOut = ObjCreate("Chilkat.JsonObject")

;  The PDF opens without a password.
$bSuccess = $oPdf.LoadFile("qa_data/pdf/no_copy_permission.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

;  Extracting text is refused, because the PDF's permissions do not allow copying.
$bSuccess = $oPdf.ExtractText("text",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite("Extraction refused: " & $oPdf.LastErrorText & @CRLF)
EndIf

;  "assess" reports only counts and ratings, never text, so it is always allowed.
$bSuccess = $oPdf.ExtractText("assess",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("rating: " & $oJsonOut.StringOf("quality.rating") & @CRLF)

;  Load with the owner password to get owner rights, which include copying.
$oPdf.OwnerPassword = "owner-secret"
$bSuccess = $oPdf.LoadFile("qa_data/pdf/no_copy_permission.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oPdf.ExtractText("text",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite($oJsonOut.StringOf("text") & @CRLF)

;  Sample output:

;  Extraction refused: ChilkatLog:
;    ExtractText:
;      ...
;        The PDF's permissions do not allow copying or extracting text (load it with the owner password to extract).
;      ...
;  rating: good
;  Visitor Leaflet
;  
;  Welcome to the harbor lighthouse. The tower is open on weekends from July to September.
;  
;  Please keep to the marked paths and do not climb on the breakwater.
;  
;  The lantern room is closed in high winds.