Create a PL/I source file, opdemo.pli

1. Right-click the project in the Application Explorer view and select New > PL/I Source File.
2. In the New file name field, enter opdemo.pli. Click Finish. The editor appears with skeleton code for opdemo.pli.
3. Overwrite the skeleton contents with the following code:
   Note: Make sure the first line of the following code begins in column 2.

    OPDEMO: PROC(JCLPARM) OPTIONS(MAIN) REORDER;
    
    
    DCL JCLPARM CHAR(20) VARYING;
   
    /*-------------------------------------------------------------------*/
    /*                        F I L E S                                  */
    /*-------------------------------------------------------------------*/
   
     DCL SYSIN FILE RECORD INPUT  ENVIRONMENT(FB RECSIZE(80));
   
     DCL SYSUT1 FILE RECORD INPUT  ENVIRONMENT(FB RECSIZE(80));
   
     DCL SYSUT2 FILE RECORD OUTPUT ENVIRONMENT(FB RECSIZE(80));
     
     DCL SYSPRINT FILE STREAM OUTPUT PRINT ENV (F RECSIZE (132));
   
    /*-------------------------------------------------------------------*/
    /*            S T R U C T U R E S    &    A R R A Y S                */
    /*-------------------------------------------------------------------*/
    /*-------------------------------------------------------------------*/
    /*                E X T E R N A L    E N T R I E S                   */
    /*-------------------------------------------------------------------*/
   
   
    /*-------------------------------------------------------------------*/
    /*                 O T H E R    V A R I A B L E S                    */
    /*-------------------------------------------------------------------*/
   
   
    DCL ACCUMULATOR     FIXED BIN(31) INIT(1);
   
    DCL ASCII_ALPHABET char(38)
      init('!ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ');
   
    DCL chTemp char(1);                                                                       
   
    DCL EBCDIC_ALPHABET char(38) init
      ('5AC1C2C3C4C5C6C7C8C9D1D2D3D4D5D6D7D8D9E2E3E4E5E6E7E8E9'x || 
       'F0F1F2F3F4F5F6F7F8F940'x);
   
    DCL EOF_SYSIN      CHAR(1) INIT('0');
    
    DCL EOF_SYSUT1     CHAR(1) INIT('0');
   
    DCL ITERATIONS     FIXED BIN(31) INIT(0);
   
    DCL JCLTRANS       CHAR(20) VARYING; 
   
    DCL REC_BUFF       char(80);
    
    DCL REPLY_STR      CHAR(120) VARYING;
    
    DCL STATIC_STR     CHAR(200) varying 
      init('Hi Dave - this is your static string');
    
    DCL SYSIN_NUM_RECS PIC '9999';
    
    DCL SYSPRINT_BUFF  CHAR(132);
    
    DCL VAR_NUMERIC    PIC '9999';
                                                                          
    /*-------------------------------------------------------------------*/
    /*              B U I L T I N     F U N C T I O N S                  */
    /*-------------------------------------------------------------------*/
    
    DCL PLIRETC BUILTIN;
    DCL TRANSLATE BUILTIN;
    DCL DELAY   BUILTIN;
    
    
    /*-------------------------------------------------------------------*/
    /*                   M O D U L E     L O G I C                       */
    /*-------------------------------------------------------------------*/
   
   
     on error begin;
       PUT SKIP LIST('On Error Triggered' || oncode());
       goto AFTERON;
     end;
   
    
     on conversion begin;
       PUT SKIP LIST('On Conversion Triggered');
       goto AFTERON;
     end;
   
     ON ENDFILE (SYSIN)
        begin;
          EOF_SYSIN = '1';
          put skip list('SYSIN EOF Reached - Num Recs: ' || 
                        sysin_num_recs);
        end;
   
   
     ON ENDFILE (SYSUT1)
        begin;
          EOF_SYSUT1 = '1';
          put skip list('SYSUT1 EOF Reached');
        end;
   
    SYSPRINT_BUFF = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' || /* 26 */
                    'ABCDEFGHIJKLMNOPQRSTUVWXYZ' || /* 52 */
                    'ABCDEFGHIJKLMNOPQRSTUVWXYZ' || /* 78 */
                    'ABCDEFGHIJKLMNOPQRSTUVWXYZ' || /* 104 */
                    'ABCDEFGHIJKLMNOPQRSTUVWXYZ' || /* 130 */
                    '12';
    open file(sysprint);
    PUT SKIP LIST(SYSPRINT_BUFF);
    
    put skip list('Length of JCLPARM: ' || length(jclparm));
    PUT DATA(JCLPARM);
    PUT SKIP;
   
    if (JCLPARM = 'DISPLAYREPLY') then
      do;
        DISPLAY('STARTING OPDEMO.PLI') REPLY(reply_str);
        put skip list('Reply String: ' || reply_str);
      end;
    else
      do;
      
        /* Read SYSIN to EOF */
        sysin_num_recs = '0';
        open input file(sysin);
        do while(eof_sysin = '0');
            read file(sysin) into (rec_buff);
            if (eof_sysin = '0') then
              sysin_num_recs = sysin_num_recs + 1;
        end;
        close file(sysin);
      
      end;
   
    /***********************************************************/
    /*  Open SYSUT1 and read until EOF translating records and */
    /*  Writing them to SYSUT2                                 */
    /***********************************************************/
    
    open file(sysut1) input;
    open file(sysut2) output;
   
    do while(eof_sysut1 = '0');
       read file(sysut1) into(rec_buff);
       if (eof_sysut1 = '0') then
         do;
           rec_buff = Translate(rec_buff, ascii_alphabet, ebcdic_alphabet);
           write file(sysut2) from(rec_buff);
         end;
    end;
   
    close file(sysut1);
    close file(sysut2);
   
    STARTIT:
   
    PUT SKIP DATA(ACCUMULATOR);
    ACCUMULATOR = ACCUMULATOR + 15;
    PUT SKIP DATA(ACCUMULATOR);
   
    PUT SKIP LIST('Triggering ON Unit');
    VAR_NUMERIC = 'DAVE';
    PUT SKIP DATA(VAR_NUMERIC); 
   
    AFTERON:
    PUT SKIP LIST('SLEEPING for 3 Seconds');
   
    Delay(3000);  /*  Sleep for 3 seconds */
   
    Iterations = Iterations + 1;
   
    /*  Let's run for about 6 seconds */
    If Iterations < 2 then
      goto startit;
   
    END;
   

4. Save the file.

By default, saving a file automatically triggers a build of the project. You can see the progress of the build process in Eclipse's Console view.