Xbase++
Xbase++
Google Contacts - Retrieve as JSON
See more Google APIs Examples
Demonstrates how to retrieve Google Contacts as JSON.Chilkat Xbase++ Downloads
LOCAL nSuccess
LOCAL oJsonToken
LOCAL oGAuth
LOCAL oRest
LOCAL nBAutoReconnect
LOCAL oSbResponseBody
LOCAL oJson
LOCAL nTotalResults
LOCAL nStartIndex
LOCAL nItemsPerPage
LOCAL nNumEntries
LOCAL i
LOCAL cFullName
LOCAL nNumEmailAddresses
LOCAL j
LOCAL cEmailAddress
nSuccess := 0
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// --------------------------------------------------------------------------------------------------------
// Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
// Once connected, the REST object may be re-used for many REST API calls.
// (It's a good idea to put the connection setup code in a separate function/subroutine.)
// --------------------------------------------------------------------------------------------------------
// It is assumed we previously obtained an OAuth2 access token.
// This example loads the JSON access token file
// saved by this example: Get Google Contacts OAuth2 Access Token
oJsonToken := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonToken:LoadFile("qa_data/tokens/googleContacts.json")
IF (nSuccess != 1)
? "Failed to load googleContacts.json"
oJsonToken:destroy()
RETURN
ENDIF
oGAuth := CreateObject("Chilkat.AuthGoogle")
oGAuth:AccessToken := oJsonToken:StringOf("access_token")
oRest := CreateObject("Chilkat.Rest")
// Connect using TLS.
nBAutoReconnect := 1
nSuccess := oRest:Connect("www.google.com", 443, 1, nBAutoReconnect)
// Provide the authentication credentials (i.e. the access token)
oRest:SetAuthGoogle(oGAuth)
// ----------------------------------------------
// OK, the REST connection setup is completed..
// ----------------------------------------------
// To retrieve the contacts, we need to send the following:
// GET /m8/feeds/contacts/default/full
// GData-Version: 3.0
// To get the contacts data in JSON format, set the "alt" query parameter to "json"
oRest:AddQueryParam("alt", "json")
oRest:AddHeader("GData-Version", "3.0")
oSbResponseBody := CreateObject("Chilkat.StringBuilder")
nSuccess := oRest:FullRequestNoBodySb("GET", "/m8/feeds/contacts/default/full", oSbResponseBody)
IF (nSuccess != 1)
? oRest:LastErrorText
oJsonToken:destroy()
oGAuth:destroy()
oRest:destroy()
oSbResponseBody:destroy()
RETURN
ENDIF
// A successful response will have a status code equal to 200.
IF (oRest:ResponseStatusCode != 200)
? "response status code = " + Str(oRest:ResponseStatusCode)
? "response status text = " + oRest:ResponseStatusText
? "response header: " + oRest:ResponseHeader
? "response body: " + oSbResponseBody:GetAsString()
oJsonToken:destroy()
oGAuth:destroy()
oRest:destroy()
oSbResponseBody:destroy()
RETURN
ENDIF
// If the 200 response was received, then the contacts JSON is contained
// in the response body.
oJson := CreateObject("Chilkat.JsonObject")
oJson:LoadSb(oSbResponseBody)
oJson:EmitCompact := 0
// Save the pretty-printed JSON response to a file.
oSbResponseBody:Clear()
oJson:EmitSb(oSbResponseBody)
oSbResponseBody:WriteFile("qa_output/google_contacts.json", "utf-8", 0)
// Parse the Google Contacts JSON, and iterate over the contacts..
nTotalResults := oJson:IntOf("feed.openSearch$totalResults.$t")
nStartIndex := oJson:IntOf("feed.openSearch$startIndex.$t")
nItemsPerPage := oJson:IntOf("feed.openSearch$itemsPerPage.$t")
? "totalResults = " + Str(nTotalResults)
? "startIndex = " + Str(nStartIndex)
? "itemsPerPage = " + Str(nItemsPerPage)
nNumEntries := oJson:SizeOfArray("feed.entry")
i := 0
DO WHILE i < nNumEntries
oJson:I := i
? Str(i + 1) + " ----"
? "title: " + oJson:StringOf("feed.entry[i].title.$t")
cFullName := oJson:StringOf("feed.entry[i].gd$name.gd$fullName.$t")
IF (oJson:LastMethodSuccess == 1)
? "fullName: " + cFullName
ENDIF
// There can be multiple email addresses, so it's stored as a JSON array..
nNumEmailAddresses := oJson:SizeOfArray("feed.entry[i].gd$email")
j := 0
DO WHILE j < nNumEmailAddresses
cEmailAddress := oJson:StringOf("feed.entry[i].gd$email[j].address")
IF (oJson:LastMethodSuccess == 1)
? "email address: " + cEmailAddress
ENDIF
j := j + 1
ENDDO
i := i + 1
ENDDO
// A sample Google Contacts JSON response:
// {
// "version": "1.0",
// "encoding": "UTF-8",
// "feed": {
// "xmlns": "http://www.w3.org/2005/Atom",
// "xmlns$openSearch": "http://a9.com/-/spec/opensearch/1.1/",
// "xmlns$gContact": "http://schemas.google.com/contact/2008",
// "xmlns$batch": "http://schemas.google.com/gdata/batch",
// "xmlns$gd": "http://schemas.google.com/g/2005",
// "gd$etag": "\"QHw5eTVSLyt7I2A9XRFaE0kNTwI.\"",
// "id": {
// "$t": "chilkat.support@gmail.com"
// },
// "updated": {
// "$t": "2016-11-17T01:57:41.221Z"
// },
// "category": [
// {
// "scheme": "http://schemas.google.com/g/2005#kind",
// "term": "http://schemas.google.com/contact/2008#contact"
// }
// ],
// "title": {
// "$t": "Chilkat Support's Contacts"
// },
// "link": [
// {
// "rel": "alternate",
// "type": "text/html",
// "href": "https://www.googleapis.com/"
// },
// {
// "rel": "http://schemas.google.com/g/2005#feed",
// "type": "application/atom+xml",
// "href": "https://www.googleapis.com/m8/feeds/contacts/chilkat.support%40gmail.com/full"
// },
// {
// "rel": "http://schemas.google.com/g/2005#post",
// "type": "application/atom+xml",
// "href": "https://www.googleapis.com/m8/feeds/contacts/chilkat.support%40gmail.com/full"
// },
// {
// "rel": "http://schemas.google.com/g/2005#batch",
// "type": "application/atom+xml",
// "href": "https://www.googleapis.com/m8/feeds/contacts/chilkat.support%40gmail.com/full/batch"
// },
// {
// "rel": "self",
// "type": "application/atom+xml",
// "href": "https://www.googleapis.com/m8/feeds/contacts/chilkat.support%40gmail.com/full?max-results=25&alt=json"
// },
// {
// "rel": "next",
// "type": "application/atom+xml",
// "href": "https://www.googleapis.com/m8/feeds/contacts/chilkat.support%40gmail.com/full?max-results=25&alt=json&start-index=26"
// }
// ],
// "author": [
// {
// "name": {
// "$t": "Chilkat Support"
// },
// "email": {
// "$t": "chilkat.support@gmail.com"
// }
// }
// ],
// "generator": {
// "version": "1.0",
// "uri": "http://www.google.com/m8/feeds",
// "$t": "Contacts"
// },
// "openSearch$totalResults": {
// "$t": "350"
// },
// "openSearch$startIndex": {
// "$t": "1"
// },
// "openSearch$itemsPerPage": {
// "$t": "25"
// },
// "entry": [
// {
// "id": {
// "$t": "http://www.google.com/m8/feeds/contacts/chilkat.support%40gmail.com/base/0"
// },
// "gd$etag": "\"SX8zcTVSLyt7I2A9WxBXFU4MQwI.\"",
// "updated": {
// "$t": "2010-01-26T20:07:48.189Z"
// },
// "app$edited": {
// "xmlns$app": "http://www.w3.org/2007/app",
// "$t": "2010-01-26T20:07:48.189Z"
// },
// "category": [
// {
// "scheme": "http://schemas.google.com/g/2005#kind",
// "term": "http://schemas.google.com/contact/2008#contact"
// }
// ],
// "title": {
// "$t": "Joe Sample"
// },
// "link": [
// {
// "rel": "http://schemas.google.com/contacts/2008/rel#photo",
// "type": "image/*",
// "href": "https://www.googleapis.com/m8/feeds/photos/media/chilkat.support%40gmail.com/0"
// },
// {
// "rel": "self",
// "type": "application/atom+xml",
// "href": "https://www.googleapis.com/m8/feeds/contacts/chilkat.support%40gmail.com/full/0"
// },
// {
// "rel": "edit",
// "type": "application/atom+xml",
// "href": "https://www.googleapis.com/m8/feeds/contacts/chilkat.support%40gmail.com/full/0"
// }
// ],
// "gd$name": {
// "gd$fullName": {
// "$t": "Joe Sample"
// },
// "gd$givenName": {
// "$t": "Joe"
// },
// "gd$familyName": {
// "$t": "Sample"
// }
// },
// "gd$email": [
// {
// "address": "somebody@gmail.com",
// "primary": "true",
// "rel": "http://schemas.google.com/g/2005#other"
// }
// ]
// },
// ... more entries ...
// }
oJsonToken:destroy()
oGAuth:destroy()
oRest:destroy()
oSbResponseBody:destroy()
oJson:destroy()