AutoIt Requires Chilkat v11.7.0+

Replace the Second (or Every) Occurrence of a Label in a PDF

See more PDF Text Replacement Examples

Demonstrates the "occurrence" member of a label entry. By default the first occurrence of a label, in reading order across the selected pages, is replaced; "occurrence" can be a number for the nth, or "all" for every occurrence. The invoice template has "Ref:" twice. 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 is available at invoice_template.pdf

$oPdf = ObjCreate("Chilkat.Pdf")
$bSuccess = $oPdf.LoadFile("qa_data/pdf/invoice_template.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

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

;  This template's {{placeholders}} are not being filled here: "keep" leaves them as they are
;  (the default, "error", would refuse to apply while a placeholder on the page has no value).
$oJson.UpdateString("unusedPlaceholders","keep")

;  "Ref:" appears twice on the page (A-1 near the top, A-2 below the totals).
;  The default replaces the first occurrence only.
$oJson.UpdateString("labels[0].label","Ref:")
$oJson.UpdateString("labels[0].value","B-7")
$bSuccess = $oPdf.TextReplace("check",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("default: " & $oJsonOut.IntOf("replacements[0].count") & " occurrence replaced" & @CRLF)

;  The second occurrence only.
$oJson.UpdateString("labels[0].occurrence","2")
$bSuccess = $oPdf.TextReplace("check",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("occurrence 2: " & $oJsonOut.IntOf("replacements[0].count") & " occurrence replaced" & @CRLF)

;  Every occurrence.
$oJson.UpdateString("labels[0].occurrence","all")
$bSuccess = $oPdf.TextReplace("apply",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("occurrence all: " & $oJsonOut.IntOf("replacements[0].count") & " occurrences replaced" & @CRLF)

$bSuccess = $oPdf.WriteFile("qa_output/invoice_refs.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

;  Sample output:

;  default: 1 occurrence replaced
;  occurrence 2: 1 occurrence replaced
;  occurrence all: 2 occurrences replaced