C
C
Retrieve a Single Contact
See more Google APIs Examples
Demonstrates how to retrieve a single contact (by contactId) for the Google Contacts API.Chilkat C Downloads
#include <C_CkJsonObject.h>
#include <C_CkAuthGoogle.h>
#include <C_CkRest.h>
#include <C_CkStringBuilder.h>
#include <C_CkXml.h>
void ChilkatSample(void)
{
BOOL success;
HCkJsonObject jsonToken;
HCkAuthGoogle gAuth;
HCkRest rest;
BOOL bAutoReconnect;
HCkStringBuilder sbPath;
int numReplacements;
HCkStringBuilder sbResponseBody;
HCkXml xml;
const char *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 = CkJsonObject_Create();
success = CkJsonObject_LoadFile(jsonToken,"qa_data/tokens/googleContacts.json");
if (success != TRUE) {
printf("Failed to load googleContacts.json\n");
CkJsonObject_Dispose(jsonToken);
return;
}
gAuth = CkAuthGoogle_Create();
CkAuthGoogle_putAccessToken(gAuth,CkJsonObject_stringOf(jsonToken,"access_token"));
rest = CkRest_Create();
// Connect using TLS.
bAutoReconnect = TRUE;
success = CkRest_Connect(rest,"www.google.com",443,TRUE,bAutoReconnect);
// Provide the authentication credentials (i.e. the access token)
CkRest_SetAuthGoogle(rest,gAuth);
// ----------------------------------------------
// OK, the REST connection setup is completed..
// ----------------------------------------------
// To retrieve the contact, send the following:
// GET /m8/feeds/contacts/default/full/{contactId}
// GData-Version: 3.0
CkRest_AddHeader(rest,"GData-Version","3.0");
sbPath = CkStringBuilder_Create();
CkStringBuilder_Append(sbPath,"/m8/feeds/contacts/default/full/{contactId}");
// Get the contact having contactId = "7b1c7b6409e718a0"
numReplacements = CkStringBuilder_Replace(sbPath,"{contactId}","7b1c7b6409e718a0");
sbResponseBody = CkStringBuilder_Create();
success = CkRest_FullRequestNoBodySb(rest,"GET",CkStringBuilder_getAsString(sbPath),sbResponseBody);
if (success != TRUE) {
printf("%s\n",CkRest_lastErrorText(rest));
CkJsonObject_Dispose(jsonToken);
CkAuthGoogle_Dispose(gAuth);
CkRest_Dispose(rest);
CkStringBuilder_Dispose(sbPath);
CkStringBuilder_Dispose(sbResponseBody);
return;
}
// A successful response will have a status code equal to 200.
if (CkRest_getResponseStatusCode(rest) != 200) {
printf("response status code = %d\n",CkRest_getResponseStatusCode(rest));
printf("response status text = %s\n",CkRest_responseStatusText(rest));
printf("response header: %s\n",CkRest_responseHeader(rest));
printf("response body: %s\n",CkStringBuilder_getAsString(sbResponseBody));
CkJsonObject_Dispose(jsonToken);
CkAuthGoogle_Dispose(gAuth);
CkRest_Dispose(rest);
CkStringBuilder_Dispose(sbPath);
CkStringBuilder_Dispose(sbResponseBody);
return;
}
// If the 200 response was received, then the contacts XML is contained
// in the response body.
xml = CkXml_Create();
CkXml_LoadSb(xml,sbResponseBody,FALSE);
// See below for a sample response body.
CkXml_SaveXml(xml,"qa_output/google_contact.xml");
// Now let's parse the XML...
printf("title: %s\n",CkXml_getChildContent(xml,"title"));
emailAddress = CkXml_chilkatPath(xml,"gd:email|(address)");
if (CkXml_getLastMethodSuccess(xml) == TRUE) {
printf("email address: %s\n",emailAddress);
}
// The response body XML looks something like this:
// <?xml version="1.0" encoding="UTF-8" ?>
// <entry gd:etag=""R3kzezVSLit7I2A9XRFaFE8DQAU."" xmlns="http://www.w3.org/2005/Atom" xmlns:batch="http://schemas.google.com/gdata/batch" xmlns:gContact="http://schemas.google.com/contact/2008" xmlns:gd="http://schemas.google.com/g/2005">
// <id>http://www.google.com/m8/feeds/contacts/support%40chilkatcloud.com/base/7b1c7b6409e718a0</id>
// <updated>2016-11-18T00:41:56.783Z</updated>
// <app:edited xmlns:app="http://www.w3.org/2007/app">2016-11-18T00:41:56.783Z</app:edited>
// <category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/contact/2008#contact" />
// <title>Chilkat Cloud</title>
// <link rel="http://schemas.google.com/contacts/2008/rel#photo" type="image/*" href="https://www.googleapis.com/m8/feeds/photos/media/support%40chilkatcloud.com/7b1c7b6409e718a0" gd:etag=""fgVhPls4Sit7I2BWHUlTWkQMKHUZKHkkaiw."" />
// <link rel="self" type="application/atom+xml" href="https://www.googleapis.com/m8/feeds/contacts/support%40chilkatcloud.com/full/7b1c7b6409e718a0" />
// <link rel="edit" type="application/atom+xml" href="https://www.googleapis.com/m8/feeds/contacts/support%40chilkatcloud.com/full/7b1c7b6409e718a0" />
// <gd:name>
// <gd:fullName>Chilkat Cloud</gd:fullName>
// <gd:givenName>Chilkat</gd:givenName>
// <gd:familyName>Cloud</gd:familyName>
// </gd:name>
// <gd:email rel="http://schemas.google.com/g/2005#other" address="support@chilkatcloud.com" primary="true" />
// <gContact:groupMembershipInfo deleted="false" href="http://www.google.com/m8/feeds/groups/support%40chilkatcloud.com/base/6" />
// </entry>
CkJsonObject_Dispose(jsonToken);
CkAuthGoogle_Dispose(gAuth);
CkRest_Dispose(rest);
CkStringBuilder_Dispose(sbPath);
CkStringBuilder_Dispose(sbResponseBody);
CkXml_Dispose(xml);
}