//=============================================================================
//
// Task:    BIWEEKLY.TSK
//          (Bi-weekly execution on alternate specific days, i.e.,every 14 days)
// Author:  Avanti Technology, Inc.
//          http://www.avanti-tech.com
// Version: 1.0 - First release [30 September 2003]
//
// Description:
// ============
// On scheduled execution, determines whether this specific day is the first
// or second occurrence within the bi-weekly period for the year to date and
// terminates if does not match the specified occurrence.
//
// System Environment Variables (%0 - %9) used/usage:
// --------------------------------------------------
// %1 Days since last completed two week period (set by CALC)
//
// The internal System Environment Variables are used to simplify processing
// and maintenance on the script.  For example, using %0 in place of the base
// pattern allows us to easily change the base pattern throughout the task
// merely by changing the DEFINE which sets its value.
//
// Objective:
// ==========
// Limit execution of the task to a bi-weekly basis (i.e., only one Sunday
// every two weeks versus every Sunday, as scheduled for ease of scheduling).
//
// Usage:
// ======
// Script should be scheduled for execution on a specific weekday.
//
// Script can be scheduled for automatic execution using Client interface or
// using the TaskMaster TMSCHEDULE command at the TMConsole (Shell) Screen:
//
// Example:   TMSCHEDULE ADD TRSTBKUP.TSK YNNNNNN 02:00
//            (Scheduled for every Sunday [SMTWTFS] at 2:00am)
//
//            Note: Scheduled tasks must reside either in SYS:SYSTEM or the
//                  TaskMaster NLM load directory for security reasons.
//
// Compatibility:
// ==============
// This task has been tested on the following platforms without demonstrating
// any compatibility issues or any other reported/confirmed conflicts:
// TaskMaster v3.15c (or later), TaskMaster Lite v3.15c (or later)
// NetWare v3.12 / v3.2 / v4.1x / v5.x / v6.0
//
// Warning:
// ========
// AS WITH ANY NEW SOFTWARE PROGRAM, BATCH SCRIPT, OR AUTOMATED PROCESSING
// PROCEDURE, CAUTION SHOULD BE EXERCISED AND DUE DILIGENCE OBSERVED DURING
// INITIAL IMPLEMENTATION.  WHERE POSSIBLE, TESTING SHOULD BE PERFORMED ON
// NON-PRODUCTION SYSTEMS PRIOR TO FULL IMPLEMENTATION.
//
// Comments:
// =========
// This task script is provided free of charge and without any warranty or
// guarantee of fitness of purpose or performance.
//
// For additional TaskMaster script examples, visit the Sample Tasks page
// on the Avanti Technology, Inc. WEB Site:  http://www.avanti-tech.com
//
//=============================================================================


// Pre-format %1 to 2 digits (00-99) for subsequent IF string test (07)

DEFINE %1 00


// Calculate the number of days since the last two week period completed

CALC %1 %NDAY_OF_YEAR% - ((%NDAY_OF_YEAR% / 14) * 14)


// To process the 1st occurrence of the scheduled day every 2 week period, use:
// IF NOT "%1"<"07"
//
// To process the 2nd occurrence of the scheduled day every 2 week period, use:
// IF NOT "%1">"06"
//


// This logic presumes processing the 1st occurrence in every 2 weeks is desired

IF NOT "%1"<"07"

    ECHO.
    ECHO %TASK_NAME%
    ECHO Terminating - Not proper scheduled run date!
    ECHO.

    ABORT

ENDIF


// Remainder of task which SHOULD execute every other
// (1st or 2nd, not both) scheduled date