Visual FoxPro Requires Chilkat v11.7.0+

Extract One Section of a PDF by its Heading

See more PDF Text Extraction Examples

Demonstrates "labelValue": "section", which returns everything from a heading up to the next heading of the same or higher level. With the "markdown" operation the section keeps its own sub-headings. Visual FoxPro

LOCAL lnSuccess
LOCAL loPdf
LOCAL loJson
LOCAL loJsonOut

lnSuccess = 0

*  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 sectioned_doc.pdf

loPdf = CreateObject('Chilkat.Pdf')
lnSuccess = loPdf.LoadFile("qa_data/pdf/sectioned_doc.pdf")
IF (lnSuccess = 0) THEN
    ? loPdf.LastErrorText
    RELEASE loPdf
    CANCEL
ENDIF

loJson = CreateObject('Chilkat.JsonObject')
loJsonOut = CreateObject('Chilkat.JsonObject')

*  The document has the sections Introduction, Opening Hours, Terms and Conditions (with the
*  sub-sections Admission, Safety and Liability) and Contact.  Get the Terms and Conditions:
*  everything after that heading up to the next heading of the same level (Contact).  The heading
*  itself is not part of the value; labelMatches[0].label has it.
loJson.UpdateString("label","Terms and Conditions")
loJson.UpdateString("labelValue","section")

lnSuccess = loPdf.ExtractText("markdown",loJson,loJsonOut)
IF (lnSuccess = 0) THEN
    ? loPdf.LastErrorText
    RELEASE loPdf
    RELEASE loJson
    RELEASE loJsonOut
    CANCEL
ENDIF

? loJsonOut.StringOf("markdown")

*  The same with the "text" operation gives the section as plain text.
lnSuccess = loPdf.ExtractText("text",loJson,loJsonOut)
IF (lnSuccess = 0) THEN
    ? loPdf.LastErrorText
    RELEASE loPdf
    RELEASE loJson
    RELEASE loJsonOut
    CANCEL
ENDIF

? "---- as text ----"
? loJsonOut.StringOf("text")

*  Sample output:

*  ### Admission
*  
*  Admission is free. Groups of more than ten should book in advance so that a volunteer can be assigned to them.
*  
*  ### Safety
*  
*  No more than eight people may be on the stair at one time. Children under twelve must be accompanied by an adult, and the lantern room is closed in high winds.
*  
*  ### Liability
*  
*  Visitors climb the tower at their own risk. The society carries public liability insurance but accepts no responsibility for personal property.
*  ---- as text ----
*  Admission
*  
*  Admission is free. Groups of more than ten should book in advance so that a volunteer can be assigned to them.
*  
*  Safety
*  
*  No more than eight people may be on the stair at one time. Children under twelve must be accompanied by an adult, and the lantern room is closed in high winds.
*  
*  Liability
*  
*  Visitors climb the tower at their own risk. The society carries public liability insurance but accepts no responsibility for personal property.

RELEASE loPdf
RELEASE loJson
RELEASE loJsonOut