/****************************** Module Header *******************************
*
* Module Name: queryrootdir.cmd
*
* Syntax: queryrootdir
*
* This writes NEPMD_ROOTDIR=<value> to STDOUT, according to the <value> of
* the ini key NEPMD -> RootDir.
*
* Copyright (c) netlabs.org EPM Distribution Project 2021
*
* $Id$
*
* ===========================================================================
*
* This file is part of the Netlabs EPM Distribution package and is free
* software.  You can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* Netlabs EPM Distribution.  This library is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* General Public License for more details.
*
****************************************************************************/

IF ADDRESS() <> 'EPM' THEN
   '@ECHO OFF'

/* ----------------- Standard CMD initialization follows ----------------- */
SIGNAL ON HALT NAME Halt
SIGNAL ON NOVALUE NAME RexxError
SIGNAL ON SYNTAX NAME RexxError
SIGNAL ON FAILURE NAME RexxError

env   = 'OS2ENVIRONMENT'
TRUE  = (1 = 1)
FALSE = (0 = 1)
CrLf  = '0d0a'x
Redirection = '>NUL 2>&1'
PARSE SOURCE . . ThisFile
GlobalVars = 'env TRUE FALSE Redirection ERROR. ThisFile'

/* Some OS/2 Error codes */
ERROR.NO_ERROR           =   0
ERROR.INVALID_FUNCTION   =   1
ERROR.FILE_NOT_FOUND     =   2
ERROR.PATH_NOT_FOUND     =   3
ERROR.ACCESS_DENIED      =   5
ERROR.NOT_ENOUGH_MEMORY  =   8
ERROR.INVALID_FORMAT     =  11
ERROR.INVALID_DATA       =  13
ERROR.NO_MORE_FILES      =  18
ERROR.WRITE_FAULT        =  29
ERROR.READ_FAULT         =  30
ERROR.SHARING_VIOLATION  =  32
ERROR.GEN_FAILURE        =  31
ERROR.INVALID_PARAMETER  =  87
ERROR.ENVVAR_NOT_FOUND   = 204

rc = ERROR.NO_ERROR

CALL RxFuncAdd 'SysLoadFuncs', 'RexxUtil', 'SysLoadFuncs'
CALL SysLoadFuncs
/* ----------------- Standard CMD initialization ends -------------------- */

/* ------------- Configuration ---------------- */
/* INI app names and keys of NEPMD project from OS2.INI, defined in nepmd.h */
NEPMD.INI_APPNAME          = 'NEPMD'
NEPMD.INI_KEYNAME_ROOTDIR  = 'RootDir'

GlobalVars = GlobalVars 'NEPMD. ErrorMessage'
/* -------------------------------------------- */

DO 1
   ErrorMessage = ''

   /* Get current ini entry */
   RootDir = QueryIniKey( NEPMD.INI_KEYNAME_ROOTDIR)

   /* Write to STDOUT */
   CALL LINEOUT 'STDOUT:', 'NEPMD_ROOTDIR='RootDir
END

EXIT( rc)

/* ----------------------------------------------------------------------- */
/* Queries ini key. Returns an empty value on error. */
QueryIniKey: PROCEDURE EXPOSE (GlobalVars)
   PARSE ARG IniKey

   IniVal = ''
   IniFile = 'USER'
   IniApp = NEPMD.INI_APPNAME

   next = SysIni( IniFile, IniApp, IniKey)
   IF next <> 'ERROR:' THEN
   DO
      next = STRIP( next, 't', '00'x)
      IF next <> '' THEN
         IniVal = next
   END

   RETURN( IniVal)

/* ----------------------------------------------------------------------- */
SayErrorText: PROCEDURE EXPOSE (GlobalVars)
   SELECT
      WHEN (ErrorMessage = '') THEN NOP

      /* Called directly */
      OTHERWISE
      DO
         SAY ErrorMessage
         'PAUSE'
      END
   END

   RETURN( '')

/* ----------------------------------------------------------------------- */
Halt:
   ErrorMessage = 'Interrupted by user.'
   CALL SayErrorText
   EXIT( 99)

/* ----------------------------------------------------------------------- */
/* Give a standard REXX error message. */
/* This is for REXX error conditions only. */
/* System error codes and REXX error codes are different. */
RexxError:
   /* SIGL must be saved to not get overwritten later. */
   ErrorLine = SIGL

   /* As an extension to the standard REXX error messages,    */
   /* the error condition will be appended to the error text. */
   ConditionText = 'Condition: 'CONDITION( 'C')
   ConditionDescription = CONDITION( 'D')
   IF ConditionDescription <> '' THEN
      ConditionText = ConditionText', Reason: 'ConditionDescription

   ErrText = ''
   IF SYMBOL( 'rc') = 'VAR' THEN
   DO
      IF rc > 0 & rc < 100 THEN
         ErrText = ERRORTEXT( rc)
   END
   IF ErrText = '' THEN
      ErrText = ConditionText
   ELSE
      ErrText = ErrText', 'ConditionText

   /* Ensure that rc is set and that rc <> 0 is returned */
   IF SYMBOL( 'rc') = 'VAR' THEN
   DO
      IF \( rc > 0 & rc < 100) THEN
         rc = 999
   END
   ELSE
      rc = 999

   ErrorMessage = ''
   IF ErrorLine > 0 THEN
      ErrorMessage = RIGHT( ErrorLine, 6)' +++  'SOURCELINE( ErrorLine)
   IF ErrorMessage <> '' THEN
      ErrorMessage = ErrorMessage''CrLf
   ErrorMessage = ErrorMessage ||,
      'REX'RIGHT( rc, 4, 0)': Error 'rc' running 'ThisFile', line 'ErrorLine': 'ErrText
   CALL SayErrorText

   EXIT( rc)