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(Lianja) Google Contacts - Retrieve All Contacts

Demonstrates how to retrieve the full list of contacts for the Google Contacts API.

Chilkat Lianja Extension Download

Chilkat Lianja Extension

// 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

loJsonToken = createobject("CkJsonObject")
llSuccess = loJsonToken.LoadFile("qa_data/tokens/googleContacts.json")
if (llSuccess <> .T.) then
    ? "Failed to load googleContacts.json"
    release loJsonToken
    return
endif

loGAuth = createobject("CkAuthGoogle")
loGAuth.AccessToken = loJsonToken.StringOf("access_token")

loRest = createobject("CkRest")

// Connect using TLS.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.google.com",443,.T.,llBAutoReconnect)

// Provide the authentication credentials (i.e. the access token)
loRest.SetAuthGoogle(loGAuth)

// ----------------------------------------------
// 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

loRest.AddHeader("GData-Version","3.0")

loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loRest.FullRequestNoBodySb("GET","/m8/feeds/contacts/default/full",loSbResponseBody)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loJsonToken
    release loGAuth
    release loRest
    release loSbResponseBody
    return
endif

// A successful response will have a status code equal to 200.
if (loRest.ResponseStatusCode <> 200) then
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + loSbResponseBody.GetAsString()
    release loJsonToken
    release loGAuth
    release loRest
    release loSbResponseBody
    return
endif

// If the 200 response was received, then the contacts XML is contained
// in the response body.
loXml = createobject("CkXml")
loXml.LoadSb(loSbResponseBody,.F.)

// See below for a sample response body.
loXml.SaveXml("qa_output/google_contacts.xml")

// Now let's parse the XML...

// Get the the total number of results, the start index, and the items per page.
// We'll likely NOT get the full list, but will instead get the 1st page.
lnTotalResults = loXml.GetChildIntValue("openSearch:totalResults")
lnStartIndex = loXml.GetChildIntValue("openSearch:startIndex")
lnItemsPerPage = loXml.GetChildIntValue("openSearch:itemsPerPage")
? "totalResults = " + str(lnTotalResults)
? "startIndex = " + str(lnStartIndex)
? "itemsPerPage = " + str(lnItemsPerPage)

// We'll borrow a method from FileAccess to get the contactId from the URL string (see the code in the while loop)
loFac = createobject("CkFileAccess")

// Iterate over each contact.
lnNumEntries = loXml.NumChildrenHavingTag("entry")
i = 0
do while i < lnNumEntries
    loXml.I = i
    ? str(i + 1) + " ----"
    ? "title: " + loXml.GetChildContent("entry[i]|title")

    // The entry "id" child contains a URL having this format:
    // <id>http://www.google.com/m8/feeds/contacts/{userEmail}/base/{contactId}</id>
    // Let's get the URL and parse the contactId from it..
    lcIdUrl = loXml.GetChildContent("entry[i]|id")
    ? "id: " + lcIdUrl

    // Use the parsing ability of GetFileName to get the contactId
    lcContactId = loFac.GetFileName(lcIdUrl)
    ? "contactId: " + lcContactId

    lcFullName = loXml.ChilkatPath("entry[i]|gd:name|gd:fullName|*")
    if (loXml.LastMethodSuccess = .T.) then
        ? "fullName: " + lcFullName
    endif

    lcEmailAddress = loXml.ChilkatPath("entry[i]|gd:email|(address)")
    if (loXml.LastMethodSuccess = .T.) then
        ? "email address: " + lcEmailAddress
    endif

    i = i + 1
enddo

// The response body XML looks something like this:

// 	<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="feedEtag">
// 	  <id>userEmail</id>
// 	  <updated>2008-12-10T10:04:15.446Z</updated>
// 	  <category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/contact/2008#contact"/>
// 	  <link rel="http://schemas.google.com/g/2005#feed" type="application/atom+xml"
// 	      href="https://www.google.com/m8/feeds/contacts/userEmail/full"/>
// 	  <link rel="http://schemas.google.com/g/2005#post" type="application/atom+xml"
// 	      href="https://www.google.com/m8/feeds/contacts/userEmail/full"/>
// 	  <link rel="http://schemas.google.com/g/2005#batch" type="application/atom+xml"
// 	      href="https://www.google.com/m8/feeds/contacts/userEmail/full/batch"/>
// 	  <link rel="self" type="application/atom+xml"
// 	      href="https://www.google.com/m8/feeds/contacts/userEmail/full?max-results=25"/>
// 	  <author>
// 	    <name>User</name>
// 	    <email>userEmail</email>
// 	  </author>
// 	  <generator version="1.0" uri="http://www.google.com/m8/feeds">
// 	    Contacts
// 	  </generator>
// 	  <openSearch:totalResults>349</openSearch:totalResults>
// 	  <openSearch:startIndex>1</openSearch:startIndex>
// 	  <openSearch:itemsPerPage>25</openSearch:itemsPerPage>
// 	  <entry gd:etag="contactEtag">
// 	    <id>
// 	      http://www.google.com/m8/feeds/contacts/userEmail/base/contactId
// 	    </id>
// 	    <updated>2008-12-10T04:45:03.331Z</updated>
// 	    <app:edited xmlns:app="http://www.w3.org/2007/app">2008-12-10T04:45:03.331Z</app:edited>
// 	    <category scheme="http://schemas.google.com/g/2005#kind"
// 	        term="http://schemas.google.com/contact/2008#contact"/>
// 	    <title>Fitzwilliam Darcy</title>
// 	    <gd:name>
// 	      <gd:fullName>Fitzwilliam Darcy</gd:fullName>
// 	    </gd:name>
// 	    <link rel="http://schemas.google.com/contacts/2008/rel#photo" type="image/*"
// 	        href="https://www.google.com/m8/feeds/photos/media/userEmail/contactId"
// 	        gd:etag="photoEtag"/>
// 	    <link rel="self" type="application/atom+xml"
// 	        href="https://www.google.com/m8/feeds/contacts/userEmail/full/contactId"/>
// 	    <link rel="edit" type="application/atom+xml"
// 	        href="https://www.google.com/m8/feeds/contacts/userEmail/full/contactId"/>
// 	    <gd:phoneNumber rel="http://schemas.google.com/g/2005#home"
// 	        primary="true">
// 	      456
// 	    </gd:phoneNumber>
// 	    <gd:extendedProperty name="pet" value="hamster"/>
// 	    <gContact:groupMembershipInfo deleted="false"
// 	        href="http://www.google.com/m8/feeds/groups/userEmail/base/groupId"/>
//         <gd:email rel="http://schemas.google.com/g/2005#other" address="darcyf@example.com" primary="true" />
// 	  </entry>
// 	  <!-- Other entries ... -->
// 	</feed>
// 


release loJsonToken
release loGAuth
release loRest
release loSbResponseBody
release loXml
release loFac

 

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