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(Unicode C) Get File MetadataGets a file's metadata or content by ID. See Google Drive Files get for additional details.
#include <C_CkAuthGoogleW.h> #include <C_CkRestW.h> #include <C_CkStringBuilderW.h> #include <C_CkJsonObjectW.h> void ChilkatSample(void) { BOOL success; HCkAuthGoogleW gAuth; HCkRestW rest; BOOL bAutoReconnect; HCkStringBuilderW sbPath; const wchar_t *allFields; const wchar_t *jsonResponse; HCkJsonObjectW json; BOOL wasLastModifiedUserMe; int width; int i; int numParents; int numOwners; int numPermissions; success = TRUE; // 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. gAuth = CkAuthGoogleW_Create(); CkAuthGoogleW_putAccessToken(gAuth,L"GOOGLE-DRIVE-ACCESS-TOKEN"); rest = CkRestW_Create(); // 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. bAutoReconnect = TRUE; success = CkRestW_Connect(rest,L"www.googleapis.com",443,TRUE,bAutoReconnect); // Provide the authentication credentials (i.e. the access token) CkRestW_SetAuthGoogle(rest,gAuth); // ------------------------------------------------------------------------------ // 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. sbPath = CkStringBuilderW_Create(); CkStringBuilderW_Append(sbPath,L"/drive/v3/files/"); // Assume we previously obtained the fileId for the file of interest... CkStringBuilderW_Append(sbPath,L"0B53Q6OSTWYolbUF6WS1Gei1oalk"); // Indicate that we want ALL possible fields. // If no fields are indicated, then only the basic fields are returned. allFields = L"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"; CkRestW_AddQueryParam(rest,L"fields",allFields); jsonResponse = CkRestW_fullRequestNoBody(rest,L"GET",CkStringBuilderW_getAsString(sbPath)); if (CkRestW_getLastMethodSuccess(rest) != TRUE) { wprintf(L"%s\n",CkRestW_lastErrorText(rest)); CkAuthGoogleW_Dispose(gAuth); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); return; } // A successful response will have a status code equal to 200. if (CkRestW_getResponseStatusCode(rest) != 200) { wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest)); wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest)); wprintf(L"response header: %s\n",CkRestW_responseHeader(rest)); wprintf(L"response JSON: %s\n",jsonResponse); CkAuthGoogleW_Dispose(gAuth); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); 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. json = CkJsonObjectW_Create(); CkJsonObjectW_Load(json,jsonResponse); // Show the full JSON response. CkJsonObjectW_putEmitCompact(json,FALSE); wprintf(L"%s\n",CkJsonObjectW_emit(json)); wprintf(L"-\n"); // Demonstrate how to get pieces of information: wprintf(L"Original Filename: %s\n",CkJsonObjectW_stringOf(json,L"originalFilename")); wasLastModifiedUserMe = CkJsonObjectW_BoolOf(json,L"lastModifyingUser.me"); wprintf(L"Was Last Modified by Me: %d\n",wasLastModifiedUserMe); // Assuming this is an image file... width = CkJsonObjectW_IntOf(json,L"imageMediaMetadata.width"); wprintf(L"Image Width: %d\n",width); // Iterate over parents... numParents = CkJsonObjectW_SizeOfArray(json,L"parents"); i = 0; while (i < numParents) { CkJsonObjectW_putI(json,i); wprintf(L"Parent %d: %s\n",i,CkJsonObjectW_stringOf(json,L"parents[i]")); i = i + 1; } // Iterate over owners... numOwners = CkJsonObjectW_SizeOfArray(json,L"owners"); i = 0; while (i < numOwners) { CkJsonObjectW_putI(json,i); wprintf(L"Owner %d: kind=%s displayName=%s\n",i,CkJsonObjectW_stringOf(json,L"owners[i].kind"),CkJsonObjectW_stringOf(json,L"owners[i].displayName")); i = i + 1; } // Iterate over permissions... numPermissions = CkJsonObjectW_SizeOfArray(json,L"permissions"); i = 0; while (i < numPermissions) { CkJsonObjectW_putI(json,i); wprintf(L"Permission %d: kind=%s id=%s\n",i,CkJsonObjectW_stringOf(json,L"permissions[i].kind"),CkJsonObjectW_stringOf(json,L"permissions[i].id")); i = i + 1; } CkAuthGoogleW_Dispose(gAuth); CkRestW_Dispose(rest); CkStringBuilderW_Dispose(sbPath); CkJsonObjectW_Dispose(json); } |
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