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(Unicode C) Google Contacts - Retrieve as JSONDemonstrates how to retrieve Google Contacts as JSON.
#include <C_CkJsonObjectW.h> #include <C_CkAuthGoogleW.h> #include <C_CkRestW.h> #include <C_CkStringBuilderW.h> void ChilkatSample(void) { HCkJsonObjectW jsonToken; BOOL success; HCkAuthGoogleW gAuth; HCkRestW rest; BOOL bAutoReconnect; HCkStringBuilderW sbResponseBody; HCkJsonObjectW json; int totalResults; int startIndex; int itemsPerPage; int numEntries; int i; const wchar_t *fullName; int numEmailAddresses; int j; 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 // To get the contacts data in JSON format, set the "alt" query parameter to "json" CkRestW_AddQueryParam(rest,L"alt",L"json"); 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 JSON is contained // in the response body. json = CkJsonObjectW_Create(); CkJsonObjectW_LoadSb(json,sbResponseBody); CkJsonObjectW_putEmitCompact(json,FALSE); // Save the pretty-printed JSON response to a file. CkStringBuilderW_Clear(sbResponseBody); CkJsonObjectW_EmitSb(json,sbResponseBody); CkStringBuilderW_WriteFile(sbResponseBody,L"qa_output/google_contacts.json",L"utf-8",FALSE); // Parse the Google Contacts JSON, and iterate over the contacts.. totalResults = CkJsonObjectW_IntOf(json,L"feed.openSearch$totalResults.$t"); startIndex = CkJsonObjectW_IntOf(json,L"feed.openSearch$startIndex.$t"); itemsPerPage = CkJsonObjectW_IntOf(json,L"feed.openSearch$itemsPerPage.$t"); wprintf(L"totalResults = %d\n",totalResults); wprintf(L"startIndex = %d\n",startIndex); wprintf(L"itemsPerPage = %d\n",itemsPerPage); numEntries = CkJsonObjectW_SizeOfArray(json,L"feed.entry"); i = 0; while (i < numEntries) { CkJsonObjectW_putI(json,i); wprintf(L"%d ----\n",i + 1); wprintf(L"title: %s\n",CkJsonObjectW_stringOf(json,L"feed.entry[i].title.$t")); fullName = CkJsonObjectW_stringOf(json,L"feed.entry[i].gd$name.gd$fullName.$t"); if (CkJsonObjectW_getLastMethodSuccess(json) == TRUE) { wprintf(L"fullName: %s\n",fullName); } // There can be multiple email addresses, so it's stored as a JSON array.. numEmailAddresses = CkJsonObjectW_SizeOfArray(json,L"feed.entry[i].gd$email"); j = 0; while (j < numEmailAddresses) { emailAddress = CkJsonObjectW_stringOf(json,L"feed.entry[i].gd$email[j].address"); if (CkJsonObjectW_getLastMethodSuccess(json) == TRUE) { wprintf(L"email address: %s\n",emailAddress); } j = j + 1; } i = i + 1; } // 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 ... // CkJsonObjectW_Dispose(jsonToken); CkAuthGoogleW_Dispose(gAuth); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbResponseBody); CkJsonObjectW_Dispose(json); } |
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