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(Unicode C) Google Contacts - Retrieve All ContactsDemonstrates how to retrieve the full list of contacts for the Google Contacts API.
#include <C_CkJsonObjectW.h> #include <C_CkAuthGoogleW.h> #include <C_CkRestW.h> #include <C_CkStringBuilderW.h> #include <C_CkXmlW.h> #include <C_CkFileAccessW.h> void ChilkatSample(void) { HCkJsonObjectW jsonToken; BOOL success; HCkAuthGoogleW gAuth; HCkRestW rest; BOOL bAutoReconnect; HCkStringBuilderW sbResponseBody; HCkXmlW xml; int totalResults; int startIndex; int itemsPerPage; HCkFileAccessW fac; int numEntries; int i; const wchar_t *idUrl; const wchar_t *contactId; const wchar_t *fullName; const wchar_t *emailAddress; // 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 jsonToken = CkJsonObjectW_Create(); success = CkJsonObjectW_LoadFile(jsonToken,L"qa_data/tokens/googleContacts.json"); if (success != TRUE) { wprintf(L"Failed to load googleContacts.json\n"); CkJsonObjectW_Dispose(jsonToken); return; } gAuth = CkAuthGoogleW_Create(); CkAuthGoogleW_putAccessToken(gAuth,CkJsonObjectW_stringOf(jsonToken,L"access_token")); rest = CkRestW_Create(); // Connect using TLS. bAutoReconnect = TRUE; success = CkRestW_Connect(rest,L"www.google.com",443,TRUE,bAutoReconnect); // Provide the authentication credentials (i.e. the access token) CkRestW_SetAuthGoogle(rest,gAuth); // ---------------------------------------------- // 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 CkRestW_AddHeader(rest,L"GData-Version",L"3.0"); sbResponseBody = CkStringBuilderW_Create(); success = CkRestW_FullRequestNoBodySb(rest,L"GET",L"/m8/feeds/contacts/default/full",sbResponseBody); if (success != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkJsonObjectW_Dispose(jsonToken); CkAuthGoogleW_Dispose(gAuth); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbResponseBody); return; } // A successful response will have a status code equal to 200. if (CkRestW_getResponseStatusCode(rest) != 200) { wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest)); wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest)); wprintf(L"response header: %s\n",CkRestW_responseHeader(rest)); wprintf(L"response body: %s\n",CkStringBuilderW_getAsString(sbResponseBody)); CkJsonObjectW_Dispose(jsonToken); CkAuthGoogleW_Dispose(gAuth); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbResponseBody); return; } // If the 200 response was received, then the contacts XML is contained // in the response body. xml = CkXmlW_Create(); CkXmlW_LoadSb(xml,sbResponseBody,FALSE); // See below for a sample response body. CkXmlW_SaveXml(xml,L"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. totalResults = CkXmlW_GetChildIntValue(xml,L"openSearch:totalResults"); startIndex = CkXmlW_GetChildIntValue(xml,L"openSearch:startIndex"); itemsPerPage = CkXmlW_GetChildIntValue(xml,L"openSearch:itemsPerPage"); wprintf(L"totalResults = %d\n",totalResults); wprintf(L"startIndex = %d\n",startIndex); wprintf(L"itemsPerPage = %d\n",itemsPerPage); // We'll borrow a method from FileAccess to get the contactId from the URL string (see the code in the while loop) fac = CkFileAccessW_Create(); // Iterate over each contact. numEntries = CkXmlW_NumChildrenHavingTag(xml,L"entry"); i = 0; while (i < numEntries) { CkXmlW_putI(xml,i); wprintf(L"%d ----\n",i + 1); wprintf(L"title: %s\n",CkXmlW_getChildContent(xml,L"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.. idUrl = CkXmlW_getChildContent(xml,L"entry[i]|id"); wprintf(L"id: %s\n",idUrl); // Use the parsing ability of GetFileName to get the contactId contactId = CkFileAccessW_getFileName(fac,idUrl); wprintf(L"contactId: %s\n",contactId); fullName = CkXmlW_chilkatPath(xml,L"entry[i]|gd:name|gd:fullName|*"); if (CkXmlW_getLastMethodSuccess(xml) == TRUE) { wprintf(L"fullName: %s\n",fullName); } emailAddress = CkXmlW_chilkatPath(xml,L"entry[i]|gd:email|(address)"); if (CkXmlW_getLastMethodSuccess(xml) == TRUE) { wprintf(L"email address: %s\n",emailAddress); } i = i + 1; } // 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> // CkJsonObjectW_Dispose(jsonToken); CkAuthGoogleW_Dispose(gAuth); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbResponseBody); CkXmlW_Dispose(xml); CkFileAccessW_Dispose(fac); } |
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