(MFC) SharePoint -- Download a Text File into a String Variable

Demonstrates how to download a text file from SharePoint into a string variable.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

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

void ChilkatSample(void)
    {
    CkString strOut;

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

    //  -------------------------------------------------------------------------
    //  The following comments apply to SharePoint Windows classic authentication.
    //  -------------------------------------------------------------------------
    //  For example, imagine our SharePoint endpoint is https://xyzoffice.mycompany.com/
    //  The SHAREPOINT_NTLM_DOMAIN would be "mycompany.com"
    //  The SHAREPOINT_HTTPS_DOMAIN would be "xyzoffice.mycompany.com"
    //  Also, the SHAREPOINT_USERNAME would be just the name, not a full email address.
    //  for example, "chilkat" instead of "chilkat@mycompany.com"

    CkHttp http;

    //  If SharePoint Windows classic authentication is used, then set the
    //  Login, Password, LoginDomain, and NtlmAuth properties.
    http.put_Login("SHAREPOINT_USERNAME");
    http.put_Password("SHAREPOINT_PASSWORD");
    http.put_LoginDomain("SHAREPOINT_NTLM_DOMAIN");
    http.put_NtlmAuth(true);

    //  -------------------------------------------------------------------------
    //  The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    //  If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    //  establish the cookie as shown at SharePoint Online Authentication
    //  -------------------------------------------------------------------------

    //  This example downloads a CSV file that is utf-8 and contains Japanese characters.

    const char *url = "https://SHAREPOINT_HTTPS_DOMAIN/_api/web/GetFileByServerRelativeUrl('/Documents/ChilkatTest/japanese.csv')/$value";

    const char *strCsv = http.quickGetStr(url);
    if (http.get_LastMethodSuccess() != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  The CSV file is contained in strCsv.
    strOut.append("CSV:");
    strOut.append("\r\n");
    strOut.append(strCsv);
    strOut.append("\r\n");

    //  Note: The HTTP response hopefully indicates the charset of the response,
    //  and Chilkat should receive the string correctly.  If the response sent by
    //  SharePoint does not indicate a charset, or indicates an incorrect charset,
    //  then we can instead download the text file as binary data and interpret the
    //  bytes ourselves correctly.  For example:

    CkBinData bd;
    bool success = http.QuickGetBd(url,bd);
    if (success != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Interpret the bytes correctly as utf-8
    CkStringBuilder sb;
    sb.AppendBd(bd,"utf-8",0,0);
    strOut.append("CSV:");
    strOut.append("\r\n");
    strOut.append(sb.getAsString());
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }