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Tcl Web API Examples

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(Tcl) Emoji Tweet

Demonstrates posting a status update that includes an emoji character.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

# 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..
set json [new_CkJsonObject]

set success [CkJsonObject_LoadFile $json "qa_data/tokens/twitter.json"]

set rest [new_CkRest]

set oauth1 [new_CkOAuth1]

CkOAuth1_put_ConsumerKey $oauth1 "TWITTER_CONSUMER_KEY"
CkOAuth1_put_ConsumerSecret $oauth1 "TWITTER_CONSUMER_SECRET"
CkOAuth1_put_Token $oauth1 [CkJsonObject_stringOf $json "oauth_token"]
CkOAuth1_put_TokenSecret $oauth1 [CkJsonObject_stringOf $json "oauth_token_secret"]
CkOAuth1_put_SignatureMethod $oauth1 "HMAC-SHA1"
CkOAuth1_GenNonce $oauth1 16

CkRest_SetAuthOAuth1 $rest $oauth1 0

set bAutoReconnect 1
set success [CkRest_Connect $rest "api.twitter.com" 443 1 $bAutoReconnect]
if {[expr $success != 1]} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkJsonObject $json
    delete_CkRest $rest
    delete_CkOAuth1 $oauth1
    exit
}

# 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.

set sbText [new_CkStringBuilder]

CkStringBuilder_LoadFile $sbText "qa_data/txt/ghost_emoji.txt" "utf-8"
CkStringBuilder_Prepend $sbText "Test tweet using two emoji chars: "

# Send a tweet...
CkRest_ClearAllQueryParams $rest
CkRest_AddQueryParam $rest "status" [CkStringBuilder_getAsString $sbText]
set resp [CkRest_fullRequestFormUrlEncoded $rest "POST" "/1.1/statuses/update.json"]
if {[expr [CkRest_get_LastMethodSuccess $rest] != 1]} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkJsonObject $json
    delete_CkRest $rest
    delete_CkOAuth1 $oauth1
    delete_CkStringBuilder $sbText
    exit
}

set jsonResponse [new_CkJsonObject]

CkJsonObject_put_EmitCompact $jsonResponse 0
CkJsonObject_Load $jsonResponse $resp

if {[expr [CkRest_get_ResponseStatusCode $rest] != 200]} then {
    puts [CkJsonObject_emit $jsonResponse]
    delete_CkJsonObject $json
    delete_CkRest $rest
    delete_CkOAuth1 $oauth1
    delete_CkStringBuilder $sbText
    delete_CkJsonObject $jsonResponse
    exit
}

# Show the successful response:
puts [CkJsonObject_emit $jsonResponse]
puts "Success."

delete_CkJsonObject $json
delete_CkRest $rest
delete_CkOAuth1 $oauth1
delete_CkStringBuilder $sbText
delete_CkJsonObject $jsonResponse

 

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