(Visual FoxPro) Retrieve a Particular SharePoint List as JSON

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Downloads a particular SharePoint list and parses the JSON.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loHttp
LOCAL loSbJson
LOCAL lnSuccess
LOCAL loJson
LOCAL lnNumItems
LOCAL i
LOCAL lcTitle
LOCAL lcUri

* 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"

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Http')
loHttp = CreateObject('Chilkat.Http')

* If SharePoint Windows classic authentication is used, then set the 
* Login, Password, LoginDomain, and NtlmAuth properties.
loHttp.Login = "SHAREPOINT_USERNAME"
loHttp.Password = "SHAREPOINT_PASSWORD"
loHttp.LoginDomain = "SHAREPOINT_NTLM_DOMAIN"
loHttp.NtlmAuth = 1

* -------------------------------------------------------------------------
* 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
* -------------------------------------------------------------------------

* Indicate that we want a JSON reply
loHttp.Accept = "application/json;odata=verbose"
loHttp.AcceptCharset = "utf-8"

* The contents of a SharePoint list can be downloaded by it's URI,
* which has the following URL format:
* https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/items
* 
* To get the URI's for all SharePoint lists, 
* See Get SharePoint Lists.

* Download the list like this (where the SHAREPOINT_DOCUMENTS_GUID is replaced with the actual GUID)
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbJson = CreateObject('Chilkat.StringBuilder')
lnSuccess = loHttp.QuickGetSb("https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/Lists(guid'SHAREPOINT_DOCUMENTS_GUID')/items",loSbJson)
IF (lnSuccess <> 1) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loSbJson
    CANCEL
ENDIF

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loJson.LoadSb(loSbJson)
loJson.EmitCompact = 0

* Iterate over the items in this list.
lnNumItems = loJson.SizeOfArray("d.results")
? "Number of Items in this SharePoint List = " + STR(lnNumItems)

i = 0
DO WHILE i < lnNumItems
    loJson.I = i

    lcTitle = loJson.StringOf("d.results[i].Title")
    lcUri = loJson.StringOf("d.results[i].__metadata.uri")

    ? STR(i + 1) + ": " + lcTitle
    * This is the URI for the Nth item in this list
    ? "URI: " + lcUri

    i = i + 1
ENDDO

* My output when testing is like what is shown below.

* I found that not every item has a Title,  but as viewed in a browser, I can see each of the item's name.
* (The number of items agrees with what I can interactively see in a browser.) The mystery of what
* is being shown for the name (or title) in the browser will be investigated further as Chilkat
* continues to explore the SharePoint API...

* 	Number of Items in this SharePoint List = 13
* 	1: Domain Name created for Exchange Docx
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(3)
* 	2: null
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(4)
* 	3: VCAC_RA_Design.docx
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(5)
* 	4: null
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(9)
* 	5: null
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(10)
* 	6: Architecture Briefv1
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(16)
* 	7: PowerPoint Presentation
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(17)
* 	8: null
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(18)
* 	9: null
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(19)
* 	10: null
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(20)
* 	11: FRC Summit Brief
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(21)
* 	12: VCAC DISA Brief 8-13-16
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(22)
* 	13: TEST PROCEDURE
* 	URI: https://xyzoffice.mycompany.com/_api/Web/Lists(guid'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx')/Items(23)
* 

RELEASE loHttp
RELEASE loSbJson
RELEASE loJson