RE: Twitter examples with JScript
- From: "Macarty, Jay {PBSG}" <Jay.Macarty@xxxxxxxx>
- To: "programmingblind@xxxxxxxxxxxxx" <programmingblind@xxxxxxxxxxxxx>
- Date: Fri, 19 Jun 2009 14:37:06 -0500
Jamal,
Very cool; thanks!
-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Jamal Mazrui
Sent: Friday, June 19, 2009 2:07 PM
To: ProgrammingBlind@xxxxxxxxxxxxx
Subject: Twitter examples with JScript
From the archive
http://EmpowermentZone.com/TwitterExamples.zip
Here are two examples of using the Twitter API via the Windows Script Host and
JScript (JavaScript on Windows). These may be run at a command prompt without
external libraries. Occasionally, a computer does not seem to include the
Windows Script host, so get it from microsoft.com if needed.
The source code in PostTweet.js is an example of posting a tweet. The batch
file, RunPostTweet.bat, takes three parameters: the Twitter user name,
password, and text of the tweet. Enclose a parameter in quotes if it contains
a space.
GetTweets.js is an example of getting a page of tweets (20 messages per page).
RunGetTweets.bat also takes three parameters: the Twitter user name, password,
and page number.
The Twitter.com web server requires a POST request if its database is to be
changed, and a GET request otherwise. A POST request sends data in the body of
the request, whereas a GET request sends data in a query string appended to the
URL. Such data must be encoded so that certain, special characters are
preserved over HTTP communication.
A client request can include a header with authentication credentials -- a user
name and password. One of the server response headers indicates whether the
request is successful.
The examples illustrate these issues using the Windows COM server for HTTP and
XML operations. Also shown is the use of data returned in JSON format
(JavaScript Object Notation).
----------
[Content of PostTweet.js]
/*
Syntax:
CScript.exe /nologo PostTweet.js %1 %2 %3 */
// Get command-line parameters for Twitter user, password, and text of tweet
sUser = WScript.Arguments(0) sPassword = WScript.Arguments(1) sText =
WScript.Arguments(2)
// Convert tweet text to the encoded format needed sText = 'status=' + sText
sData = encodeURI(sText)
// Set URL for this Twitter request
sUrl = 'http://twitter.com/statuses/update.json'
// Create the request object from the Windows COM server for XML operations
oRequest = new ActiveXObject('MSXML2.XMLHTTP')
// Prepare the request with appropriate parameters oRequest.Open('POST', sUrl,
false, sUser, sPassword)
// Send the request to twitter.com (include data in the body for a POST
request)
oRequest.Send(sData)
// Show the status of the HTTP response from the web server, indicating whether
the tweet was posted successfully sStatus = oRequest.statusText
WScript.Echo(sStatus)
----------
[Content of GetTweets.js]
/*
Syntax:
CScript.exe /nologo GetTweets.js %1 %2 %3 */
// Function for testing data in JSON format (JavaScript Object Notation)
function printObject(sName, oValue) { sType = typeof(oValue) if (sType !=
'object') return WScript.echo(sName + ', ' + sType + ', ' +
oValue)
WScript.Echo(sName + ', ' + sType)
for (sAttribute in oValue) {
vValue = oValue[sAttribute]
sType = typeof(vValue)
if (sType == 'object') printObject(sAttribute, vValue) else
WScript.Echo(sAttribute + ', ' + sType + ', ' + vValue) } }
// Get command-line parameters for Twitter user, password, and page of tweets
(20 messages per page) sUser = WScript.Arguments(0) sPassword =
WScript.Arguments(1) sPage = WScript.Arguments(2)
// Convert page number to the encoded format needed sPage = 'page=' + sPage
sData = encodeURIComponent(sPage)
// Set URL for this Twitter request
sUrl = 'http://twitter.com/statuses/friends_timeline.json'
// Add the query string to the URL (used by a GET request) sUrl += '?' + sData
// Create the request object from the Windows COM server for XML operations
oRequest = new ActiveXObject('MSXML2.XMLHTTP')
// Prepare the request with appropriate parameters oRequest.Open('GET', sUrl,
false, sUser, sPassword)
// Send the request to twitter.com
oRequest.Send()
// Check for success, and abort if not
sStatus = oRequest.statusText
if (sStatus != 'OK') {
WScript.Echo(sStatus)
WScript.Quit()
}
// Get the web server response
sResponse = oRequest.responseText
// Ensure the response will be interpreted as a JScript expression sResponse =
'(' + sResponse + ')'
// Evaluate the expression, thereby creating an array of message objects
aMessages = eval(sResponse)
// Uncomment the following line to print the complete response //
printObject('Response', aMessages)
// Print the sender and text of each message iLength = aMessages.length for (i
= 0; i < iLength; i++) { oMessage = aMessages[i] sSender =
oMessage.user.screen_name sText = oMessage.text WScript.Echo(sSender + ': ' +
sText) }
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