Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3/4TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

Visual FoxPro Examples

Web API Categories

ASN.1
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
Geolocation
Google APIs
Google Calendar
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text

HTTP
HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
REST
REST Misc
RSA
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Visual FoxPro) Download File from Dropbox into a String Variable

Demonstrates how to download a file from Dropbox directly into a string variable.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loRest
LOCAL lnSuccess
LOCAL loJson
LOCAL lcFileContent
LOCAL lcApiResult
LOCAL loJsonResult
LOCAL lnSize
LOCAL lcRev
LOCAL lcClientModified
LOCAL loCkdt
LOCAL lnBLocalTime
LOCAL loDt

*  This example requires the Chilkat API to have been previously unlocked.
*  See Global Unlock Sample for sample code.

*  A Dropbox access token should have been previously obtained.
*  Dropbox access tokens do not expire.
*  See Dropbox Access Token.

loRest = CreateObject('Chilkat_9_5_0.Rest')

*  Connect to Dropbox
lnSuccess = loRest.Connect("content.dropboxapi.com",443,1,1)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    CANCEL
ENDIF

*  Add request headers.
loRest.AddHeader("Authorization","Bearer DROPBOX_ACCESS_TOKEN")

*  The download "parameters" are contained in JSON passed in an HTTP request header.
*  This is the JSON indicating the file to be downloaded:
*  {
*     "path": "/jack.txt",
*  }

loJson = CreateObject('Chilkat_9_5_0.JsonObject')
loJson.AppendString("path","/jack.txt")
loRest.AddHeader("Dropbox-API-Arg",loJson.Emit())

*  The content of the file on Dropbox is returned.
lcFileContent = loRest.FullRequestNoBody("POST","/2/files/download")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loJson
    CANCEL
ENDIF

*  When successful, Dropbox responds with a 200 response code.
IF (loRest.ResponseStatusCode <> 200) THEN
    *  Examine the request/response to see what happened.
    ? "response status code = " + STR(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body (if any): " + lcFileContent
    ? "---"
    ? "LastRequestStartLine: " + loRest.LastRequestStartLine
    ? "LastRequestHeader: " + loRest.LastRequestHeader
    RELEASE loRest
    RELEASE loJson
    CANCEL
ENDIF

*  Show the file content that was downloaded:
? lcFileContent
? "----"

*  Information about the downloaded file is also available as JSON in a response header.
*  The "dropbox-api-result" response header contains the information.  For example:
lcApiResult = loRest.ResponseHdrByName("dropbox-api-result")
? lcApiResult

*  In this case, the pretty-formatted dropbox-api-result JSON looks like this:
*  {
*    "name": "jack.txt",
*    "path_lower": "/jack.txt",
*    "path_display": "/jack.txt",
*    "id": "id:yqx4-tE_NKAAAAAAAAAAAQ",
*    "client_modified": "2016-06-02T20:42:11Z",
*    "server_modified": "2016-06-02T20:42:11Z",
*    "rev": "8482db15f",
*    "size": 42
*  }

*  Load the JSON, pretty-print it, and demonstrate how to get some values...
loJsonResult = CreateObject('Chilkat_9_5_0.JsonObject')
loJsonResult.EmitCompact = 0
loJsonResult.Load(lcApiResult)
*  Show the JSON pretty-printed...
? loJsonResult.Emit()

*  Sample code to get data from the JSON response:
lnSize = loJsonResult.IntOf("size")
? "size = " + STR(lnSize)

lcRev = loJsonResult.StringOf("rev")
? "rev = " + lcRev

lcClientModified = loJsonResult.StringOf("client_modified")
loCkdt = CreateObject('Chilkat_9_5_0.CkDateTime')
loCkdt.SetFromTimestamp(lcClientModified)
lnBLocalTime = 1
loDt = loCkdt.GetDtObj(lnBLocalTime)
? STR(loDt.Day) + "/" + STR(loDt.Month) + "/" + STR(loDt.Year) + " " + STR(loDt.Hour) + ":" + STR(loDt.Minute)
RELEASE loDt

RELEASE loRest
RELEASE loJson
RELEASE loJsonResult
RELEASE loCkdt


 

© 2000-2019 Chilkat Software, Inc. All Rights Reserved.