DataFlex
DataFlex
Download Google Contact Photo
See more Google APIs Examples
Demonstrates how to download Google Contact's photo.Chilkat DataFlex Downloads
Use ChilkatAx-win32.pkg
Procedure Test
Boolean iSuccess
Handle hoJsonToken
Variant vGAuth
Handle hoGAuth
Handle hoRest
Boolean iBAutoReconnect
Handle hoSbPath
String sContactId
Integer iNumReplacements
Variant vImageData
Handle hoImageData
Handle hoSbResponseBody
Handle hoSbContentType
String sTemp1
Integer iTemp1
Boolean bTemp1
Move False To iSuccess
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// --------------------------------------------------------------------------------------------------------
// Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
// Once connected, the REST object may be re-used for many REST API calls.
// (It's a good idea to put the connection setup code in a separate function/subroutine.)
// --------------------------------------------------------------------------------------------------------
// It is assumed we previously obtained an OAuth2 access token.
// This example loads the JSON access token file
// saved by this example: Get Google Contacts OAuth2 Access Token
Get Create (RefClass(cComChilkatJsonObject)) To hoJsonToken
If (Not(IsComObjectCreated(hoJsonToken))) Begin
Send CreateComObject of hoJsonToken
End
Get ComLoadFile Of hoJsonToken "qa_data/tokens/googleContacts.json" To iSuccess
If (iSuccess <> True) Begin
Showln "Failed to load googleContacts.json"
Procedure_Return
End
Get Create (RefClass(cComChilkatAuthGoogle)) To hoGAuth
If (Not(IsComObjectCreated(hoGAuth))) Begin
Send CreateComObject of hoGAuth
End
Get ComStringOf Of hoJsonToken "access_token" To sTemp1
Set ComAccessToken Of hoGAuth To sTemp1
Get Create (RefClass(cComChilkatRest)) To hoRest
If (Not(IsComObjectCreated(hoRest))) Begin
Send CreateComObject of hoRest
End
// Connect using TLS.
Move True To iBAutoReconnect
Get ComConnect Of hoRest "www.google.com" 443 True iBAutoReconnect To iSuccess
// Provide the authentication credentials (i.e. the access token)
Get pvComObject of hoGAuth to vGAuth
Get ComSetAuthGoogle Of hoRest vGAuth To iSuccess
// ----------------------------------------------
// OK, the REST connection setup is completed..
// ----------------------------------------------
// To get the photo, send the following:
// GET /m8/feeds/photos/media/default/contactId
Get ComAddHeader Of hoRest "GData-Version" "3.0" To iSuccess
Get Create (RefClass(cComChilkatStringBuilder)) To hoSbPath
If (Not(IsComObjectCreated(hoSbPath))) Begin
Send CreateComObject of hoSbPath
End
// Get the photo for the contact having contactId = "1ea2e4fe0ef24e09"
Move "1ea2e4fe0ef24e09" To sContactId
Get ComSetString Of hoSbPath "/m8/feeds/photos/media/default/{contactId}" To iSuccess
Get ComReplace Of hoSbPath "{contactId}" sContactId To iNumReplacements
Get Create (RefClass(cComChilkatBinData)) To hoImageData
If (Not(IsComObjectCreated(hoImageData))) Begin
Send CreateComObject of hoImageData
End
Get ComGetAsString Of hoSbPath To sTemp1
Get pvComObject of hoImageData to vImageData
Get ComFullRequestNoBodyBd Of hoRest "GET" sTemp1 vImageData To iSuccess
If (iSuccess <> True) Begin
Get ComLastErrorText Of hoRest To sTemp1
Showln sTemp1
Procedure_Return
End
// A 404 response indicates the contact has no photo.
// (We could've first fetched the contact information, parsed out the
// photo etag, and then if no photo etag existed, we'd know the contact has no
// photo. Or... we can just try to download the photo and if a 404 is received,
// we know there's no photo. Much simpler.)
Get ComResponseStatusCode Of hoRest To iTemp1
If (iTemp1 = 404) Begin
Showln "This contact has no photo."
Procedure_Return
End
// A successful response will have a status code equal to 200.
Get ComResponseStatusCode Of hoRest To iTemp1
If (iTemp1 <> 200) Begin
// If the response was not successful, then the response body
// does not contain image data. Instead it contains XML.
Get Create (RefClass(cComChilkatStringBuilder)) To hoSbResponseBody
If (Not(IsComObjectCreated(hoSbResponseBody))) Begin
Send CreateComObject of hoSbResponseBody
End
Get pvComObject of hoImageData to vImageData
Get ComAppendBd Of hoSbResponseBody vImageData "utf-8" 0 0 To iSuccess
Get ComResponseStatusCode Of hoRest To iTemp1
Showln "response status code = " iTemp1
Get ComResponseStatusText Of hoRest To sTemp1
Showln "response status text = " sTemp1
Get ComResponseHeader Of hoRest To sTemp1
Showln "response header: " sTemp1
Get ComGetAsString Of hoSbResponseBody To sTemp1
Showln "response body: " sTemp1
Get ComLastRequestStartLine Of hoRest To sTemp1
Showln "request startline: " sTemp1
Get ComLastRequestHeader Of hoRest To sTemp1
Showln "request header: " sTemp1
Procedure_Return
End
// Examine the content-type in the response header so we know what file
// extension to use (.jpg, .png, etc.)
Get Create (RefClass(cComChilkatStringBuilder)) To hoSbContentType
If (Not(IsComObjectCreated(hoSbContentType))) Begin
Send CreateComObject of hoSbContentType
End
Get ComResponseHdrByName Of hoRest "Content-Type" To sTemp1
Get ComAppend Of hoSbContentType sTemp1 To iSuccess
Get ComContentsEqual Of hoSbContentType "image/jpeg" False To bTemp1
If (bTemp1 = True) Begin
Get ComWriteFile Of hoImageData "qa_output/contact_photo.jpg" To iSuccess
End
Get ComContentsEqual Of hoSbContentType "image/png" False To bTemp1
If (bTemp1 = True) Begin
Get ComWriteFile Of hoImageData "qa_output/contact_photo.png" To iSuccess
End
Get ComGetAsString Of hoSbContentType To sTemp1
Showln "Content-Type: " sTemp1
Showln "Success."
End_Procedure