Zig
Zig
Google Contacts - Retrieve as JSON
See more Google APIs Examples
Demonstrates how to retrieve Google Contacts as JSON.Chilkat Zig Downloads
const std = @import("std");
const chilkat = @import("chilkat");
pub fn main(init: std.process.Init) !void {
const alloc = init.arena.allocator();
// 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
const json_token = try chilkat.JsonObject.init();
defer json_token.deinit();
json_token.loadFile("qa_data/tokens/googleContacts.json") catch {
std.debug.print("Failed to load googleContacts.json\n", .{});
return;
};
const g_auth = try chilkat.AuthGoogle.init();
defer g_auth.deinit();
g_auth.setAccessToken(try json_token.stringOf(alloc, "access_token"));
const rest = try chilkat.Rest.init();
defer rest.deinit();
// Connect using TLS.
const b_auto_reconnect = true;
try rest.connect("www.google.com", 443, true, b_auto_reconnect);
// Provide the authentication credentials (i.e. the access token)
rest.setAuthGoogle(g_auth) catch {};
// ----------------------------------------------
// 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"
rest.addQueryParam("alt", "json") catch {};
rest.addHeader("GData-Version", "3.0") catch {};
const sb_response_body = try chilkat.StringBuilder.init();
defer sb_response_body.deinit();
rest.fullRequestNoBodySb("GET", "/m8/feeds/contacts/default/full", sb_response_body) catch {
std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
return;
};
// A successful response will have a status code equal to 200.
if (rest.getResponseStatusCode() != 200) {
std.debug.print("response status code = {d}\n", .{rest.getResponseStatusCode()});
std.debug.print("response status text = {s}\n", .{try rest.getResponseStatusText(alloc)});
std.debug.print("response header: {s}\n", .{try rest.getResponseHeader(alloc)});
std.debug.print("response body: {s}\n", .{try sb_response_body.getAsString(alloc)});
return;
}
// If the 200 response was received, then the contacts JSON is contained
// in the response body.
const json = try chilkat.JsonObject.init();
defer json.deinit();
json.loadSb(sb_response_body) catch {};
json.setEmitCompact(false);
// Save the pretty-printed JSON response to a file.
sb_response_body.clear();
json.emitSb(sb_response_body) catch {};
sb_response_body.writeFile("qa_output/google_contacts.json", "utf-8", false) catch {};
// Parse the Google Contacts JSON, and iterate over the contacts..
const total_results = json.intOf("feed.openSearch$totalResults.$t");
const start_index = json.intOf("feed.openSearch$startIndex.$t");
const items_per_page = json.intOf("feed.openSearch$itemsPerPage.$t");
std.debug.print("totalResults = {d}\n", .{total_results});
std.debug.print("startIndex = {d}\n", .{start_index});
std.debug.print("itemsPerPage = {d}\n", .{items_per_page});
const num_entries = json.sizeOfArray("feed.entry");
var i: i32 = 0;
while (i < num_entries) {
json.setI(i);
std.debug.print("{d} ----\n", .{i + 1});
std.debug.print("title: {s}\n", .{try json.stringOf(alloc, "feed.entry[i].title.$t")});
if (json.stringOf(alloc, "feed.entry[i].gd$name.gd$fullName.$t")) |full_name| {
std.debug.print("fullName: {s}\n", .{full_name});
} else |_| {}
// There can be multiple email addresses, so it's stored as a JSON array..
const num_email_addresses = json.sizeOfArray("feed.entry[i].gd$email");
var j: i32 = 0;
while (j < num_email_addresses) {
if (json.stringOf(alloc, "feed.entry[i].gd$email[j].address")) |email_address| {
std.debug.print("email address: {s}\n", .{email_address});
} else |_| {}
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 ...
// }
}