Unicode C Requires Chilkat v11.7.0+

PDF Footnotes in Markdown: Inline, at the End, or Dropped

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Demonstrates the "footnotes" option of the "markdown" operation. Small-print notes at the foot of a page are kept where they are ("inline", the default), gathered at the end of the document ("end"), or left out ("none"). Unicode C

#include <C_CkPdfW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkPdfW pdf;
    HCkJsonObjectW json;
    HCkJsonObjectW jsonOut;

    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 footnotes.pdf

    pdf = CkPdfW_Create();
    success = CkPdfW_LoadFile(pdf,L"qa_data/pdf/footnotes.pdf");
    if (success == FALSE) {
        wprintf(L"%s\n",CkPdfW_lastErrorText(pdf));
        CkPdfW_Dispose(pdf);
        return;
    }

    json = CkJsonObjectW_Create();
    jsonOut = CkJsonObjectW_Create();

    //  Page 1 has two superscript references in the text and the two notes in small print at its foot;
    //  page 2 has a third.
    success = CkPdfW_ExtractText(pdf,L"markdown",json,jsonOut);
    if (success == FALSE) {
        wprintf(L"%s\n",CkPdfW_lastErrorText(pdf));
        CkPdfW_Dispose(pdf);
        CkJsonObjectW_Dispose(json);
        CkJsonObjectW_Dispose(jsonOut);
        return;
    }

    wprintf(L"---- footnotes: inline (default) ----\n");
    wprintf(L"%s\n",CkJsonObjectW_stringOf(jsonOut,L"markdown"));

    CkJsonObjectW_UpdateString(json,L"footnotes",L"end");
    success = CkPdfW_ExtractText(pdf,L"markdown",json,jsonOut);
    if (success == FALSE) {
        wprintf(L"%s\n",CkPdfW_lastErrorText(pdf));
        CkPdfW_Dispose(pdf);
        CkJsonObjectW_Dispose(json);
        CkJsonObjectW_Dispose(jsonOut);
        return;
    }

    wprintf(L"---- footnotes: end ----\n");
    wprintf(L"%s\n",CkJsonObjectW_stringOf(jsonOut,L"markdown"));

    CkJsonObjectW_UpdateString(json,L"footnotes",L"none");
    success = CkPdfW_ExtractText(pdf,L"markdown",json,jsonOut);
    if (success == FALSE) {
        wprintf(L"%s\n",CkPdfW_lastErrorText(pdf));
        CkPdfW_Dispose(pdf);
        CkJsonObjectW_Dispose(json);
        CkJsonObjectW_Dispose(jsonOut);
        return;
    }

    wprintf(L"---- footnotes: none ----\n");
    wprintf(L"%s\n",CkJsonObjectW_stringOf(jsonOut,L"markdown"));

    //  Sample output:

    //  ---- footnotes: inline (default) ----
    //  <!-- page 1 -->
    //  
    //  # The Lens on Loan
    //  
    //  The society located a fourth-order lens of the correct period at a museum1 in the next county, and an agreement to loan it for ten years was signed in November.2 The lens will be lit with a low-wattage electric lamp rather than oil, and it will be displayed as a historic light rather than registered as an aid to navigation.
    //  
    //  1 The county maritime museum, which holds three lenses from decommissioned lights. 2 The loan is renewable and carries no fee; the society insures the lens.
    //  
    //  <!-- page 2 -->
    //  
    //  # Public Access
    //  
    //  The grounds opened to visitors on weekends from July. Nearly three thousand people climbed the tower over the summer,3 with no incidents.
    //  
    //  3 Counted at the entrance by the volunteers on duty.
    //  
    //  ---- footnotes: end ----
    //  <!-- page 1 -->
    //  
    //  # The Lens on Loan
    //  
    //  The society located a fourth-order lens of the correct period at a museum1 in the next county, and an agreement to loan it for ten years was signed in November.2 The lens will be lit with a low-wattage electric lamp rather than oil, and it will be displayed as a historic light rather than registered as an aid to navigation.
    //  
    //  <!-- page 2 -->
    //  
    //  # Public Access
    //  
    //  The grounds opened to visitors on weekends from July. Nearly three thousand people climbed the tower over the summer,3 with no incidents.
    //  
    //  1 The county maritime museum, which holds three lenses from decommissioned lights. 2 The loan is renewable and carries no fee; the society insures the lens.
    //  
    //  3 Counted at the entrance by the volunteers on duty.
    //  
    //  ---- footnotes: none ----
    //  <!-- page 1 -->
    //  
    //  # The Lens on Loan
    //  
    //  The society located a fourth-order lens of the correct period at a museum1 in the next county, and an agreement to loan it for ten years was signed in November.2 The lens will be lit with a low-wattage electric lamp rather than oil, and it will be displayed as a historic light rather than registered as an aid to navigation.
    //  
    //  <!-- page 2 -->
    //  
    //  # Public Access
    //  
    //  The grounds opened to visitors on weekends from July. Nearly three thousand people climbed the tower over the summer,3 with no incidents.


    CkPdfW_Dispose(pdf);
    CkJsonObjectW_Dispose(json);
    CkJsonObjectW_Dispose(jsonOut);

    }