(PowerBuilder) Emoji Tweet

Demonstrates posting a status update that includes an emoji character.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Json
integer li_Success
oleobject loo_Rest
oleobject loo_Oauth1
integer li_BAutoReconnect
oleobject loo_SbText
string ls_Resp
oleobject loo_JsonResponse

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

// ----------------------------------------------------------------------
// This initial setup, which involves setting the OAuth1 properties and connecting
// to api.twitter.com, is only required once at the beginning.  Once connected, the same
// object instance may be re-used, and if necessary, it will automatically reconnect
// as needed.

// Assume we've previously obtained an access token and saved it to a JSON file..
loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")
if li_rc < 0 then
    destroy loo_Json
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_Json.LoadFile("qa_data/tokens/twitter.json")

loo_Rest = create oleobject
// Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")

loo_Oauth1 = create oleobject
// Use "Chilkat_9_5_0.OAuth1" for versions of Chilkat < 10.0.0
li_rc = loo_Oauth1.ConnectToNewObject("Chilkat.OAuth1")

loo_Oauth1.ConsumerKey = "TWITTER_CONSUMER_KEY"
loo_Oauth1.ConsumerSecret = "TWITTER_CONSUMER_SECRET"
loo_Oauth1.Token = loo_Json.StringOf("oauth_token")
loo_Oauth1.TokenSecret = loo_Json.StringOf("oauth_token_secret")
loo_Oauth1.SignatureMethod = "HMAC-SHA1"
loo_Oauth1.GenNonce(16)

loo_Rest.SetAuthOAuth1(loo_Oauth1,0)

li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("api.twitter.com",443,1,li_BAutoReconnect)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Json
    destroy loo_Rest
    destroy loo_Oauth1
    return
end if

// This ends the initial setup...
// ----------------------------------------------------------------------

// For this example, I've pre-created a text file containing two emoji
// characters (the "ghost" emoji, and a "face savouring delicious food" emoji).  
// This text file was saved using the utf-8 encoding.

// The utf-8 bytes for the ghost emoji are 0x9f 0x91 0xbb.  (Note: This is the utf-8
// representation that does not use surrogate pairs.)
// 
// The utf-8 bytes for the "face savouring delicious food" emoji are \xF0\x9F\x98\x8B.

loo_SbText = create oleobject
// Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
li_rc = loo_SbText.ConnectToNewObject("Chilkat.StringBuilder")

loo_SbText.LoadFile("qa_data/txt/ghost_emoji.txt","utf-8")
loo_SbText.Prepend("Test tweet using two emoji chars: ")

// Send a tweet...
loo_Rest.ClearAllQueryParams()
loo_Rest.AddQueryParam("status",loo_SbText.GetAsString())
ls_Resp = loo_Rest.FullRequestFormUrlEncoded("POST","/1.1/statuses/update.json")
if loo_Rest.LastMethodSuccess <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Json
    destroy loo_Rest
    destroy loo_Oauth1
    destroy loo_SbText
    return
end if

loo_JsonResponse = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_JsonResponse.ConnectToNewObject("Chilkat.JsonObject")

loo_JsonResponse.EmitCompact = 0
loo_JsonResponse.Load(ls_Resp)

if loo_Rest.ResponseStatusCode <> 200 then
    Write-Debug loo_JsonResponse.Emit()
    destroy loo_Json
    destroy loo_Rest
    destroy loo_Oauth1
    destroy loo_SbText
    destroy loo_JsonResponse
    return
end if

// Show the successful response:
Write-Debug loo_JsonResponse.Emit()
Write-Debug "Success."


destroy loo_Json
destroy loo_Rest
destroy loo_Oauth1
destroy loo_SbText
destroy loo_JsonResponse