(C++) OneNote - Get Page HTML Content

Download the HTML content of a OneNote page. Also iterates over the images and attachments on the OneNote page and downloads the content for each.

For more information, see https://docs.microsoft.com/en-us/graph/api/page-get?view=graph-rest-1.0

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#include <CkHttp.h>
#include <CkStringBuilder.h>
#include <CkXml.h>
#include <CkBinData.h>

void ChilkatSample(void)
    {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http;
    bool success;

    // Implements the following CURL command:

    // curl -X GET https://graph.microsoft.com/v1.0/me/onenote/pages/{id}/content?includeIDs=true \
    //   -H 'authorization: Bearer ACCESS_TOKEN'

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    // Adds the "Authorization: Bearer ACCESS_TOKEN" header.
    http.put_AuthToken("ACCESS_TOKEN");

    http.SetUrlVar("page_id","0-d2298668edd74dccac7f821fa378bf64!41-3A33FCEB9B74CC15!20350");

    CkStringBuilder sbResponseBody;
    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/onenote/pages/{$page_id}/content?includeIDs=true",sbResponseBody);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "HTML content:" << "\r\n";
    std::cout << sbResponseBody.getAsString() << "\r\n";

    int respStatusCode = http.get_LastStatus();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << http.lastHeader() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    // Let's get the images and attached files.
    // Here's sample HTML content with 2 images and one PDF attachment:

    // <html lang="en-US">
    // 	<head>
    // 		<title>A page with rendered images and an attached file</title>
    // 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    // 		<meta name="created" content="2020-10-23T12:00:00.0000000" />
    // 	</head>
    // 	<body data-absolute-enabled="true" style="font-family:Calibri;font-size:11pt">
    // 		<div id="div:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{32}" data-id="_default" style="position:absolute;left:48px;top:120px;width:624px">
    // 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{39}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image from an online source:</p>
    // 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{1}" alt="an image on the page" width="500" height="500" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
    // 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{43}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image uploaded as binary data:</p>
    // 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{3}" alt="an image on the page" width="300" height="225" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
    // 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{47}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s a file attachment:</p>
    // 			<object data-attachment="FileName.pdf" type="application/pdf" data="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-9e685efb33a24a6a8de1b9c707d28385!1-3A33FCEB9B74CC15!20350/$value" />
    // 		</div>
    // 	</body>
    // </html>

    CkXml xml;
    xml.LoadSb(sbResponseBody,true);

    // Iterate over each element in the XML.  Each time we find an "img" or "object", download the data.
    // (The sbState is an object used to keep track of the current state of the traversal.)
    CkStringBuilder sbState;
    const char *url = 0;
    CkBinData bd;
    while (xml.NextInTraversal2(sbState) != false) {

        if (xml.TagEquals("img") == true) {
            std::cout << "img id: " << xml.getAttrValue("id") << "\r\n";
            url = xml.getAttrValue("src");
            bd.Clear();
            success = http.QuickGetBd(url,bd);
            if (success == false) {
                std::cout << http.lastErrorText() << "\r\n";
                return;
            }

            std::cout << "Downloaded from " << url << "\r\n";
            std::cout << "----" << "\r\n";
            // If desired, bd.WriteFile to save the contents of bd to a file..
        }

        if (xml.TagEquals("object") == true) {
            std::cout << "data-attachment: " << xml.getAttrValue("data-attachment") << "\r\n";
            std::cout << "type: " << xml.getAttrValue("type") << "\r\n";
            url = xml.getAttrValue("data");
            bd.Clear();
            success = http.QuickGetBd(url,bd);
            if (success == false) {
                std::cout << http.lastErrorText() << "\r\n";
                return;
            }

            std::cout << "Downloaded from " << url << "\r\n";
            std::cout << "----" << "\r\n";
            // If desired, bd.WriteFile to save the contents of bd to a file..
        }

    }

    std::cout << "Success." << "\r\n";
    }