Version 6.3.8 for OpenVMS
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Read Environment Variable

Subroutine Name Executable Example Viewable Example

W3READ-ENVIRONMENT-ARRAY
W3READ-ENVIRONMENT
W3READ-ENVIRONMENT-TO-DYNAMIC

E3ENVARY

E3ENVARY

Description

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.

Parameters
  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
    
How To Invoke
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

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