Go 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. Go

    success := false

    //  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

    pdf := chilkat.NewPdf()
    success = pdf.LoadFile("qa_data/pdf/markdown_options.pdf")
    if success == false {
        fmt.Println(pdf.LastErrorText())
        pdf.DisposePdf()
        return
    }

    json := chilkat.NewJsonObject()
    sbMarkdown := chilkat.NewStringBuilder()
    jsonOut := chilkat.NewJsonObject()

    //  First with the default options.
    success = pdf.ExtractTextSb("markdown",json,sbMarkdown,jsonOut)
    if success == false {
        fmt.Println(pdf.LastErrorText())
        pdf.DisposePdf()
        json.DisposeJsonObject()
        sbMarkdown.DisposeStringBuilder()
        jsonOut.DisposeJsonObject()
        return
    }

    fmt.Println("---- default options ----")
    fmt.Println(*sbMarkdown.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.
    json.UpdateString("pageBreaks","rule")

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

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

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

    //  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 ##.
    json.UpdateInt("maxHeadingLevel",2)

    sbMarkdown.Clear()
    success = pdf.ExtractTextSb("markdown",json,sbMarkdown,jsonOut)
    if success == false {
        fmt.Println(pdf.LastErrorText())
        pdf.DisposePdf()
        json.DisposeJsonObject()
        sbMarkdown.DisposeStringBuilder()
        jsonOut.DisposeJsonObject()
        return
    }

    fmt.Println("---- custom options ----")
    fmt.Println(*sbMarkdown.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.

    pdf.DisposePdf()
    json.DisposeJsonObject()
    sbMarkdown.DisposeStringBuilder()
    jsonOut.DisposeJsonObject()