Visual FoxPro Requires Chilkat v11.7.0+

PDF to Markdown Options: Page Breaks, Images, Tables, Emphasis, Heading Levels

See more PDF Text Extraction Examples

Demonstrates the options of the "markdown" operation: pageBreaks (comment, rule or none), images (placeholder or none), tables (ruled or none), emphasis, and maxHeadingLevel. Visual FoxPro

LOCAL lnSuccess
LOCAL loPdf
LOCAL loJson
LOCAL loSbMarkdown
LOCAL loJsonOut

lnSuccess = 0

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

*  The two-page PDF used in this example is available at markdown_options.pdf

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

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

*  First with the default options.
lnSuccess = loPdf.ExtractTextSb("markdown",loJson,loSbMarkdown,loJsonOut)
IF (lnSuccess = 0) THEN
    ? loPdf.LastErrorText
    RELEASE loPdf
    RELEASE loJson
    RELEASE loSbMarkdown
    RELEASE loJsonOut
    CANCEL
ENDIF

? "---- default options ----"
? loSbMarkdown.GetAsString()

*  Now change the options:

*  pageBreaks: "comment" (the default) separates pages with <!-- page N -->,
*  "rule" separates them with a horizontal rule (---), and "none" runs the pages together.
loJson.UpdateString("pageBreaks","rule")

*  images: "placeholder" (the default) marks where each image sits with ![image](page-1-image-1);
*  "none" leaves images out.
loJson.UpdateString("images","none")

*  tables: "ruled" (the default) converts tables that have drawn cell borders into Markdown tables;
*  "none" returns their cells as plain text.
loJson.UpdateString("tables","none")

*  emphasis: false leaves out the ** and * markers for bold and italic.
loJson.UpdateBool("emphasis",0)

*  maxHeadingLevel: inferred headings deeper than this level are folded into this level.
*  The PDF has three heading levels; with maxHeadingLevel 2 the third level becomes ##.
loJson.UpdateInt("maxHeadingLevel",2)

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

? "---- custom options ----"
? loSbMarkdown.GetAsString()

*  Sample output:

*  ---- default options ----
*  <!-- page 1 -->
*  
*  # Community Garden Handbook
*  
*  ## Plots
*  
*  ### Plot Sizes
*  
*  Plots come in two sizes. A **full plot** is twenty feet by ten feet; a **half plot** is ten feet square. New gardeners are *strongly encouraged* to start with a half plot.
*  
*  ![image](page-1-image-1)
*  
*  ### Plot Fees
*  
*  | Plot | Size | Annual Fee |
*  | --- | --- | --- |
*  | Full | 20 x 10 ft | $60 |
*  | Half | 10 x 10 ft | $35 |
*  
*  <!-- page 2 -->
*  
*  ## Watering
*  
*  ### Schedule
*  
*  The shared tanks are filled on Monday and Thursday mornings. Please water by hand from the tanks rather than running a hose from the street tap, which is metered.
*  
*  ### Dry Spells
*  
*  During a declared drought the committee may limit watering to **two days a week**. Notices are posted on the shed door and sent by e-mail.
*  
*  ---- custom options ----
*  # Community Garden Handbook
*  
*  ## Plots
*  
*  ## Plot Sizes
*  
*  Plots come in two sizes. A full plot is twenty feet by ten feet; a half plot is ten feet square. New gardeners are strongly encouraged to start with a half plot.
*  
*  ## Plot Fees
*  
*  Plot Size Annual Fee
*  
*  Full 20 x 10 ft $60
*  
*  Half 10 x 10 ft $35
*  
*  ---
*  
*  ## Watering
*  
*  ## Schedule
*  
*  The shared tanks are filled on Monday and Thursday mornings. Please water by hand from the tanks rather than running a hose from the street tap, which is metered.
*  
*  ## Dry Spells
*  
*  During a declared drought the committee may limit watering to two days a week. Notices are posted on the shed door and sent by e-mail.

RELEASE loPdf
RELEASE loJson
RELEASE loSbMarkdown
RELEASE loJsonOut