Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(Unicode C) Download GMail Message Attachment by IDDemonstrates how to download a GMail email attachment by the attachment ID. For more information, see https://developers.google.com/gmail/api/v1/reference/users/messages/attachments/get
#include <C_CkHttpW.h> #include <C_CkStringBuilderW.h> #include <C_CkJsonObjectW.h> #include <C_CkBinDataW.h> void ChilkatSample(void) { HCkHttpW http; BOOL success; const wchar_t *attachmentId; const wchar_t *messageId; const wchar_t *url; const wchar_t *outputFilePath; HCkStringBuilderW sbJson; HCkJsonObjectW json; HCkBinDataW bd; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http = CkHttpW_Create(); CkHttpW_putAuthToken(http,L"ACCESS_TOKEN"); CkHttpW_putAccept(http,L"application/json"); // See the following example: Get GMail Message (format=full) // It shows how to download an email by message ID, and it shows how to parse the JSON // response which includes attachment names, ids, and other information. // This example will assume we already have the attachment id and filename. // This is the attachment ID for a file named "helloWorld.pdf". attachmentId = L"ANGjdJ-oy3aCuZISJKLAhUdaEksCEklbAPyMaWzFgqOMGbPCRkgwgeu_Kttd99C17OBTHROkDZGekibTKWXGfscB5ww7fw4E65_V1dQ-jHhb2TD1Cdm58-BbNw2iDxzptco8iILPiSnLLfFn5Ps7nsRcxHaGTt3r0yqFKCuIYNnPK1vM04BXI_cfzo-HnI4I3tD6oHNHOGVQrL01MdShFQjPELPUjXM8z1qs7Kom-QyvV1iOldUN-66UuhynsmDX-CMM5TIdB-8KD_lmdhf-0DqG8JnCA20XpXyfqwS8XFkPA-t-QSjb7SdkHQFtQ4lz2PcBREFzZ2eI5j0l0Y_dQHRPYTeMwkVl1yl4MfFT4C4iso3VSF-eqaIjiFCbXKCFNyeEIW5WFsv189dhlSqU"; messageId = L"1712bc1dc22da2a2"; CkHttpW_SetUrlVar(http,L"messageId",messageId); CkHttpW_SetUrlVar(http,L"attachmentId",attachmentId); url = L"https://www.googleapis.com/gmail/v1/users/userId/messages/{$messageId}/attachments/{$attachmentId}"; // When we download, the response is JSON that contains the attachment data base64url encoded, like this: // { // "size": 934, // "data": "JVBERi0xLjM ... CiUlRU9GCg==" // } outputFilePath = L"qa_output/helloWorld.pdf"; // Download into a StringBuilder. sbJson = CkStringBuilderW_Create(); success = CkHttpW_DownloadSb(http,url,L"utf-8",sbJson); if (success == FALSE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkHttpW_Dispose(http); CkStringBuilderW_Dispose(sbJson); return; } if (CkHttpW_getLastStatus(http) != 200) { // Something failed. // the JSON contains an error message. wprintf(L"%s\n",CkStringBuilderW_getAsString(sbJson)); CkHttpW_Dispose(http); CkStringBuilderW_Dispose(sbJson); return; } // Load into a Chilkat JSON object. json = CkJsonObjectW_Create(); success = CkJsonObjectW_LoadSb(json,sbJson); // Extract the base64url data into a BinData. bd = CkBinDataW_Create(); success = CkJsonObjectW_BytesOf(json,L"data",L"base64url",bd); // Save the data to a file. success = CkBinDataW_WriteFile(bd,L"qa_output/helloWorld.pdf"); wprintf(L"Success.\n"); CkHttpW_Dispose(http); CkStringBuilderW_Dispose(sbJson); CkJsonObjectW_Dispose(json); CkBinDataW_Dispose(bd); } |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.