Zig
Zig
Get File Metadata
See more Google Drive Examples
Gets a file's metadata or content by ID.See Google Drive Files get for additional details.
Chilkat Zig Downloads
const std = @import("std");
const chilkat = @import("chilkat");
pub fn main(init: std.process.Init) !void {
const alloc = init.arena.allocator();
// It 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
// Google Drive scope.
const g_auth = try chilkat.AuthGoogle.init();
defer g_auth.deinit();
g_auth.setAccessToken("GOOGLE-DRIVE-ACCESS-TOKEN");
const rest = try chilkat.Rest.init();
defer rest.deinit();
// Connect using TLS.
// A single REST object, once connected, can be used for many Google Drive REST API calls.
// The auto-reconnect indicates that if the already-established HTTPS connection is closed,
// then it will be automatically re-established as needed.
const b_auto_reconnect = true;
try rest.connect("www.googleapis.com", 443, true, b_auto_reconnect);
// Provide the authentication credentials (i.e. the access token)
rest.setAuthGoogle(g_auth) catch {};
// ------------------------------------------------------------------------------
// We need to send a GET request like this:
// GET https://www.googleapis.com/drive/v3/files/fileId
// The fileId is part of the path.
const sb_path = try chilkat.StringBuilder.init();
defer sb_path.deinit();
sb_path.append("/drive/v3/files/") catch {};
// Assume we previously obtained the fileId for the file of interest...
sb_path.append("0B53Q6OSTWYolbUF6WS1Gei1oalk") catch {};
// Indicate that we want ALL possible fields.
// If no fields are indicated, then only the basic fields are returned.
const all_fields = "appProperties,capabilities,contentHints,createdTime,description,explicitlyTrashed,fileExtension,folderColorRgb,fullFileExtension,headRevisionId,iconLink,id,imageMediaMetadata,isAppAuthorized,kind,lastModifyingUser,md5Checksum,mimeType,modifiedByMeTime,modifiedTime,name,originalFilename,ownedByMe,owners,parents,permissions,properties,quotaBytesUsed,shared,sharedWithMeTime,sharingUser,size,spaces,starred,thumbnailLink,trashed,version,videoMediaMetadata,viewedByMe,viewedByMeTime,viewersCanCopyContent,webContentLink,webViewLink,writersCanShare";
rest.addQueryParam("fields", all_fields) catch {};
const json_response = rest.fullRequestNoBody(alloc, "GET", try sb_path.getAsString(alloc)) 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 JSON: {s}\n", .{json_response});
return;
}
// ---------------------------------------------------
// Sample code for parsing this JSON is shown below...
// ---------------------------------------------------
// A successful response looks like this:
// {
// "kind": "drive#file",
// "id": "0B53Q6OSTWYolbUF6WS1Gei1oalk",
// "name": "penguins.jpg",
// "mimeType": "image/jpeg",
// "starred": false,
// "trashed": false,
// "explicitlyTrashed": false,
// "parents": [
// "0B53Q6OSTWYola296ODZUSm5GYU0"
// ],
// "spaces": [
// "drive"
// ],
// "version": "672",
// "webContentLink": "https://docs.google.com/a/chilkatcloud.com/uc?id=0B53Q6OSTWYolbUF6WS1Gei1oalk&export=download",
// "webViewLink": "https://drive.google.com/a/chilkatcloud.com/file/d/0B53Q6OSTWYolbUF6WS1Gei1oalk/view?usp=drivesdk",
// "iconLink": "https://ssl.gstatic.com/docs/doclist/images/icon_11_image_list.png",
// "thumbnailLink": "https://lh5.googleusercontent.com/uIV1dJdc8vsAQzaaIInpc9AV55AcdHhpM7fQeI2RN2qbCSnhjK9IDdNQAOTtkvjS9ZObqw=s220",
// "viewedByMe": true,
// "viewedByMeTime": "2016-10-08T12:38:02.258Z",
// "createdTime": "2016-10-08T12:38:02.258Z",
// "modifiedTime": "2016-10-08T12:38:02.258Z",
// "modifiedByMeTime": "2016-10-08T12:38:02.258Z",
// "owners": [
// {
// "kind": "drive#user",
// "displayName": "Matthew Smith",
// "me": true,
// "permissionId": "08366696655122259092",
// "emailAddress": "support@chilkatcloud.com"
// }
// ],
// "lastModifyingUser": {
// "kind": "drive#user",
// "displayName": "Matthew Smith",
// "me": true,
// "permissionId": "08366696655122259092",
// "emailAddress": "support@chilkatcloud.com"
// },
// "shared": false,
// "ownedByMe": true,
// "capabilities": {
// "canEdit": true,
// "canComment": true,
// "canShare": true,
// "canCopy": true,
// "canReadRevisions": true
// },
// "viewersCanCopyContent": true,
// "writersCanShare": true,
// "permissions": [
// {
// "kind": "drive#permission",
// "id": "08366696655122259092",
// "type": "user",
// "emailAddress": "support@chilkatcloud.com",
// "role": "owner",
// "displayName": "Matthew Smith"
// }
// ],
// "originalFilename": "penguins.jpg",
// "fullFileExtension": "jpg",
// "fileExtension": "jpg",
// "md5Checksum": "9d377b10ce778c4938b3c7e2c63a229a",
// "size": "777835",
// "quotaBytesUsed": "777835",
// "headRevisionId": "0B53Q6OSTWYolUUlHVFhHdFlXQ0R1aHZuT0tORTVzc2h5NnZjPQ",
// "imageMediaMetadata": {
// "width": 1024,
// "height": 768,
// "rotation": 0,
// "time": "2009:03:12 13:48:35"
// },
// "isAppAuthorized": false
// }
// Iterate over each file in the response and show the name, id, and mimeType.
const json = try chilkat.JsonObject.init();
defer json.deinit();
json.load(json_response) catch {};
// Show the full JSON response.
json.setEmitCompact(false);
std.debug.print("{s}\n", .{try json.emit(alloc)});
std.debug.print("-\n", .{});
// Demonstrate how to get pieces of information:
std.debug.print("Original Filename: {s}\n", .{try json.stringOf(alloc, "originalFilename")});
const was_last_modified_user_me = json.boolOf("lastModifyingUser.me");
std.debug.print("Was Last Modified by Me: {}\n", .{was_last_modified_user_me});
// Assuming this is an image file...
const width = json.intOf("imageMediaMetadata.width");
std.debug.print("Image Width: {d}\n", .{width});
// Iterate over parents...
var i: i32 = 0;
const num_parents = json.sizeOfArray("parents");
i = 0;
while (i < num_parents) {
json.setI(i);
std.debug.print("Parent {d}: {s}\n", .{ i, try json.stringOf(alloc, "parents[i]") });
i = i + 1;
}
// Iterate over owners...
const num_owners = json.sizeOfArray("owners");
i = 0;
while (i < num_owners) {
json.setI(i);
std.debug.print("Owner {d}: kind={s} displayName={s}\n", .{ i, try json.stringOf(alloc, "owners[i].kind"), try json.stringOf(alloc, "owners[i].displayName") });
i = i + 1;
}
// Iterate over permissions...
const num_permissions = json.sizeOfArray("permissions");
i = 0;
while (i < num_permissions) {
json.setI(i);
std.debug.print("Permission {d}: kind={s} id={s}\n", .{ i, try json.stringOf(alloc, "permissions[i].kind"), try json.stringOf(alloc, "permissions[i].id") });
i = i + 1;
}
}