How to get/query the list of files in a folder from Envision

Say you have a list of file in HOLD_SHARED_MYFOLDER directory in Colleague, and you want to read in the list of files in MYFOLDER and do something with them, maybe read or write or both.

What you need is read/write access to MYFOLDER. Your admin should know how to set it up, and a VOC entry should already be created for it. 

In Colleague Studio, use the following code to get back a list of files inside MYFOLDER directory:

X.STMT = 'SELECT HOLD_SHARED_MYFOLDER'
CALL S.EXECUTE(X.STMT)
XL.FILES.NAME = ''
CALL S.READLIST(XL.FILES.NAME,0,X.STATUS)
CONVERT @FM:@SM:@VM:@AM TO @VM:@VM:@VM:@VM IN XL.FILES.NAME

Now you will have all the files' names in MYFOLDER populated in XL.FILES.NAME. To open each file up, you iterate them with S.OPEN.SEQ subroutine

FOR X = 1 to DCOUNT(XL.FILES.NAME, @VM)
   * Open the file
   CALL S.OPEN.SEQ("HOLD_SHARED_MYFOLDER", XL.FILES.NAME<1,X>, X, "R", X.ERROR.MSG)
   * Read from the file
   CALL S.READ.SEQ(X.TEXT, X.EOF, X, X.ERROR, X.MSG)
   * Close the file
   CALL S.CLOSE.SEQ(X, X.ERROR, X.MSG)
NEXT X