Unicode C
Unicode C
Google Contacts - Retrieve All Contacts
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Demonstrates how to retrieve the full list of contacts for the Google Contacts API.Chilkat Unicode C Downloads
#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)
{
BOOL success;
HCkJsonObjectW jsonToken;
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;
success = FALSE;
// 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);
}