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DataFlex Examples

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(DataFlex) Read RSS Feed

Sample code showing how to read an RSS feed and emit the contents.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoRss
    Boolean iSuccess
    Variant vRssChannel
    Handle hoRssChannel
    Integer iNumItems
    Integer i
    Variant vRssItem
    Handle hoRssItem
    Integer iNumCategories
    Integer j
    String sTemp1
    Boolean bTemp1

    Get Create (RefClass(cComChilkatRss)) To hoRss
    If (Not(IsComObjectCreated(hoRss))) Begin
        Send CreateComObject of hoRss
    End

    // Download from the feed URL:
    Get ComDownloadRss Of hoRss "http://www.nytimes.com/services/xml/rss/nyt/HomePage.xml" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRss To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Get the 1st channel.
    Get ComGetChannel Of hoRss 0 To vRssChannel
    If (IsComObject(vRssChannel)) Begin
        Get Create (RefClass(cComChilkatRss)) To hoRssChannel
        Set pvComObject Of hoRssChannel To vRssChannel
    End
    Get ComLastMethodSuccess Of hoRss To bTemp1
    If (bTemp1 = False) Begin
        Showln "No channel found in RSS feed."
        Procedure_Return
    End

    // Display the various pieces of information about the channel:
    Get ComGetString Of hoRssChannel "title" To sTemp1
    Showln "Title: " sTemp1
    Get ComGetString Of hoRssChannel "link" To sTemp1
    Showln "Link: " sTemp1
    Get ComGetString Of hoRssChannel "description" To sTemp1
    Showln "Description: " sTemp1

    // For each item in the channel, display the title, link,
    // publish date, and categories assigned to the post.
    Get ComNumItems Of hoRssChannel To iNumItems

    For i From 0 To (iNumItems - 1)
        Get ComGetItem Of hoRssChannel i To vRssItem
        If (IsComObject(vRssItem)) Begin
            Get Create (RefClass(cComChilkatRss)) To hoRssItem
            Set pvComObject Of hoRssItem To vRssItem
        End

        Showln "----"
        Get ComGetString Of hoRssItem "title" To sTemp1
        Showln "Title: " sTemp1
        Get ComGetString Of hoRssItem "link" To sTemp1
        Showln "Link: " sTemp1
        Get ComGetString Of hoRssItem "pubDate" To sTemp1
        Showln "pubDate: " sTemp1

        Get ComGetCount Of hoRssItem "category" To iNumCategories

        If (iNumCategories > 0) Begin
            For j From 0 To (iNumCategories - 1)
                Get ComMGetString Of hoRssItem "category" j To sTemp1
                Showln "    category: " sTemp1
            Loop

        End

        Send Destroy of hoRssItem
    Loop

    Send Destroy of hoRssChannel


End_Procedure

 

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