Read Environment Variable

Reads the first occurrence of a single variable. With W3READ-ENVIRONMENT-ARRAY, a variable can be read beginning with an offset. This can be used to read multiple occurrences of the same variable.

1. W3READ-ENVIRONMENT-ARRAY

   1 W3START        (I4)       /* io/m : Offset to be started at
   *                           /*        out: 0 no occurrences
   *                           /*        out: >0 more occurrences
   1 W3NAME         (A072)     /* i /m : Name of the variable to
   *                           /*        be searched for
   1 W3VALUESERVER  (A1)       /* i /m : Search for variables from
   *                           /*        'S' server
   *                           /*        'P' page or URL
   *                           /*        ' ' both
   1 W3ARRAYCOUNTER (I4)       /* io/m : Size of array,
                               /*        characters read
   1 W3VALUEARRAY   (A001/1:V) /*  o/m : Array with the returned value
   1 W3VALUELENGTH  (I4)       /*  o/m : length of the value 
   

2. W3READ-ENVIRONMENT

   1 W3NAME        (A072) /* i /m : Name of the variable
                          /*        searched for
   1 W3VALUESERVER (A1)   /* i /m : Search for variables in   
   *                      /*        'S' server
   *                      /*        'P' page or URL
   *                      /*        ' ' both
   1 W3VALUE       (A250) /*  o/m : Returned value
   1 W3VALUELENGTH (I4)   /*  o/m : Length of the value
   

3. W3READ-ENVIRONMENT-TO-DYNAMIC

   1 W3NAME         (A072)      /* i /m : Name of the variable
                                /*        searched for
   1 W3VALUESERVER  (A1)        /* i /m : Search for variables in
   *                            /*        'S' server
   *                            /*        'P' page or URL
   *                            /*        ' ' both
   1 W3VALUEDYNAMIC (A) DYNAMIC /* o/m : Returned value
   

PERFORM W3READ-ENVIRONMENT-ARRAY W3START W3NAME
        W3VALUESERVER W3ARRAYCOUNTER
        W3VALUEARRAY(*) W3VALUELENGTH

PERFORM W3READ-ENVIRONMENT W3NAME W3VALUESERVER W3VALUE
        W3VALUELENGTH

PERFORM W3READ-ENVIRONMENT-TO-DYNAMIC W3NAME W3VALUESERVER
        W3VALUEDYNAMIC