Objective-C
Objective-C
Google Cloud Storage List Bucket Objects
See more Google Cloud Storage Examples
List the objects in a Google Cloud Storage bucket.Chilkat Objective-C Downloads
#import <CkoStringBuilder.h>
#import <CkoHttp.h>
#import <CkoHttpResponse.h>
#import <CkoJsonObject.h>
#import <NSString.h>
BOOL success = NO;
// 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..
CkoStringBuilder *sbToken = [[CkoStringBuilder alloc] init];
[sbToken LoadFile: @"qa_data/tokens/googleCloudStorageAccessToken.txt" charset: @"utf-8"];
CkoHttp *http = [[CkoHttp alloc] init];
http.AuthToken = [sbToken GetAsString];
// For more info see Cloud Storage Documentation - Objects: list
//
success = [http SetUrlVar: @"bucket" value: @"chilkat-ocean"];
success = [http SetUrlVar: @"PROJECT_NAME" value: @"ChilkatCloud"];
CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpNoBody: @"GET" url: @"https://www.googleapis.com/storage/v1/b/{$bucket}/o?project={$ChilkatCloud}" response: resp];
if (success == NO) {
NSLog(@"%@",http.LastErrorText);
return;
}
int responseCode = [resp.StatusCode intValue];
if (responseCode == 401) {
NSLog(@"%@",resp.BodyStr);
NSLog(@"%@",@"If invalid credentials, then it is likely the access token expired.");
NSLog(@"%@",@"Your app should automatically fetch a new access token and re-try.");
return;
}
NSLog(@"%@%d",@"Response code: ",responseCode);
NSLog(@"%@",@"Response body");
CkoJsonObject *json = [[CkoJsonObject alloc] init];
success = [json Load: resp.BodyStr];
json.EmitCompact = NO;
NSLog(@"%@",[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
NSString *id = 0;
NSString *selfLink = 0;
NSString *mediaLink = 0;
NSString *name = 0;
NSString *bucket = 0;
NSString *generation = 0;
NSString *metageneration = 0;
NSString *contentType = 0;
NSString *storageClass = 0;
NSString *size = 0;
NSString *md5Hash = 0;
NSString *crc32c = 0;
NSString *etag = 0;
NSString *timeCreated = 0;
NSString *updated = 0;
NSString *timeStorageClassUpdated = 0;
NSString *kind = [json StringOf: @"kind"];
int i = 0;
int count_i = [[json SizeOfArray: @"items"] intValue];
while (i < count_i) {
json.I = [NSNumber numberWithInt: i];
kind = [json StringOf: @"items[i].kind"];
id = [json StringOf: @"items[i].id"];
selfLink = [json StringOf: @"items[i].selfLink"];
mediaLink = [json StringOf: @"items[i].mediaLink"];
name = [json StringOf: @"items[i].name"];
bucket = [json StringOf: @"items[i].bucket"];
generation = [json StringOf: @"items[i].generation"];
metageneration = [json StringOf: @"items[i].metageneration"];
contentType = [json StringOf: @"items[i].contentType"];
storageClass = [json StringOf: @"items[i].storageClass"];
size = [json StringOf: @"items[i].size"];
md5Hash = [json StringOf: @"items[i].md5Hash"];
crc32c = [json StringOf: @"items[i].crc32c"];
etag = [json StringOf: @"items[i].etag"];
timeCreated = [json StringOf: @"items[i].timeCreated"];
updated = [json StringOf: @"items[i].updated"];
timeStorageClassUpdated = [json StringOf: @"items[i].timeStorageClassUpdated"];
i = i + 1;
}