Unicode C++
Unicode C++
Google Cloud Storage List Bucket Objects
See more Google Cloud Storage Examples
List the objects in a Google Cloud Storage bucket.Chilkat Unicode C++ Downloads
#include <CkStringBuilderW.h>
#include <CkHttpW.h>
#include <CkHttpResponseW.h>
#include <CkJsonObjectW.h>
void ChilkatSample(void)
{
bool success = false;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example uses a previously obtained access token having permission for the
// scope "https://www.googleapis.com/auth/cloud-platform"
// In this example, Get Google Cloud Storage OAuth2 Access Token,
// the service account access token was saved to a text file. This example fetches the access token from the file..
CkStringBuilderW sbToken;
sbToken.LoadFile(L"qa_data/tokens/googleCloudStorageAccessToken.txt",L"utf-8");
CkHttpW http;
http.put_AuthToken(sbToken.getAsString());
// For more info see Cloud Storage Documentation - Objects: list
//
success = http.SetUrlVar(L"bucket",L"chilkat-ocean");
success = http.SetUrlVar(L"PROJECT_NAME",L"ChilkatCloud");
CkHttpResponseW resp;
success = http.HttpNoBody(L"GET",L"https://www.googleapis.com/storage/v1/b/{$bucket}/o?project={$ChilkatCloud}",resp);
if (success == false) {
wprintf(L"%s\n",http.lastErrorText());
return;
}
int responseCode = resp.get_StatusCode();
if (responseCode == 401) {
wprintf(L"%s\n",resp.bodyStr());
wprintf(L"If invalid credentials, then it is likely the access token expired.\n");
wprintf(L"Your app should automatically fetch a new access token and re-try.\n");
return;
}
wprintf(L"Response code: %d\n",responseCode);
wprintf(L"Response body\n");
CkJsonObjectW json;
success = json.Load(resp.bodyStr());
json.put_EmitCompact(false);
wprintf(L"%s\n",json.emit());
// A response code = 200 indicates success, and the response body contains JSON such as this:
// {
// "kind": "storage#objects",
// "items": [
// {
// "kind": "storage#object",
// "id": "chilkat-ocean/file with space char.jpg/1555776690752366",
// "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/file%20with%20space%20char.jpg",
// "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/file%20with%20space%20char.jpg?generation=1555776690752366&alt=media",
// "name": "file with space char.jpg",
// "bucket": "chilkat-ocean",
// "generation": "1555776690752366",
// "metageneration": "1",
// "contentType": "image/jpeg",
// "storageClass": "MULTI_REGIONAL",
// "size": "6229",
// "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
// "crc32c": "9RjgwQ==",
// "etag": "CO6WguiH3+ECEAE=",
// "timeCreated": "2019-04-20T16:11:30.752Z",
// "updated": "2019-04-20T16:11:30.752Z",
// "timeStorageClassUpdated": "2019-04-20T16:11:30.752Z"
// },
// {
// "kind": "storage#object",
//
// "id": "chilkat-ocean/penguins.jpg/1555775749593296",
// "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/penguins.jpg",
// "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/penguins.jpg?generation=1555775749593296&alt=media",
// "name": "penguins.jpg",
// "bucket": "chilkat-ocean",
// "generation": "1555775749593296",
// "metageneration": "1",
// "contentType": "image/jpeg",
// "storageClass": "MULTI_REGIONAL",
// "size": "777835",
// "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
// "crc32c": "ixxYVw==",
// "etag": "CNCxnqeE3+ECEAE=",
// "timeCreated": "2019-04-20T15:55:49.593Z",
// "updated": "2019-04-20T15:55:49.593Z",
// "timeStorageClassUpdated": "2019-04-20T15:55:49.593Z"
// },
// {
// "kind": "storage#object",
// "id": "chilkat-ocean/starfish.jpg/1628958192639968",
// "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg",
// "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/starfish.jpg?generation=1628958192639968&alt=media",
// "name": "starfish.jpg",
// "bucket": "chilkat-ocean",
// "generation": "1628958192639968",
// "metageneration": "1",
// "contentType": "image/jpeg",
// "storageClass": "MULTI_REGIONAL",
// "size": "6229",
// "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
// "crc32c": "9RjgwQ==",
// "etag": "COC/tJP2sPICEAE=",
// "timeCreated": "2021-08-14T16:23:12.660Z",
// "updated": "2021-08-14T16:23:12.660Z",
// "timeStorageClassUpdated": "2021-08-14T16:23:12.660Z"
// }
// ]
// }
// Use this online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON
// Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
// See this example explaining how this memory should be used: const char * functions.
const wchar_t *id = 0;
const wchar_t *selfLink = 0;
const wchar_t *mediaLink = 0;
const wchar_t *name = 0;
const wchar_t *bucket = 0;
const wchar_t *generation = 0;
const wchar_t *metageneration = 0;
const wchar_t *contentType = 0;
const wchar_t *storageClass = 0;
const wchar_t *size = 0;
const wchar_t *md5Hash = 0;
const wchar_t *crc32c = 0;
const wchar_t *etag = 0;
const wchar_t *timeCreated = 0;
const wchar_t *updated = 0;
const wchar_t *timeStorageClassUpdated = 0;
const wchar_t *kind = json.stringOf(L"kind");
int i = 0;
int count_i = json.SizeOfArray(L"items");
while (i < count_i) {
json.put_I(i);
kind = json.stringOf(L"items[i].kind");
id = json.stringOf(L"items[i].id");
selfLink = json.stringOf(L"items[i].selfLink");
mediaLink = json.stringOf(L"items[i].mediaLink");
name = json.stringOf(L"items[i].name");
bucket = json.stringOf(L"items[i].bucket");
generation = json.stringOf(L"items[i].generation");
metageneration = json.stringOf(L"items[i].metageneration");
contentType = json.stringOf(L"items[i].contentType");
storageClass = json.stringOf(L"items[i].storageClass");
size = json.stringOf(L"items[i].size");
md5Hash = json.stringOf(L"items[i].md5Hash");
crc32c = json.stringOf(L"items[i].crc32c");
etag = json.stringOf(L"items[i].etag");
timeCreated = json.stringOf(L"items[i].timeCreated");
updated = json.stringOf(L"items[i].updated");
timeStorageClassUpdated = json.stringOf(L"items[i].timeStorageClassUpdated");
i = i + 1;
}
}