Changeset 4842 for palm/trunk/SOURCE/gust_mod.f90

Timestamp:

Jan 14, 2021 10:42:28 AM (4 years ago)

Author:

raasch

Message:

reading of namelist file and actions in case of namelist errors revised so that statement labels and goto statements are not required any more, deprecated namelists removed

File:

• palm/trunk/SOURCE/gust_mod.f90 (modified) (2 diffs)

palm/trunk/SOURCE/gust_mod.f90

@@ -24 +24 @@
 ! -----------------
 ! $Id$
+! reading of namelist file and actions in case of namelist errors revised so that statement labels
+! and goto statements are not required any more
+!
+! 4828 2021-01-05 11:21:41Z Giersch
 ! Enable 3D data output also with 64-bit precision
 !
@@ -213 +217 @@
 !> Parin for &gust_parameters for gust module
 !--------------------------------------------------------------------------------------------------!
-    SUBROUTINE gust_parin
-
-
-       IMPLICIT NONE
-
-       CHARACTER (LEN=80)  ::  line  !< dummy string that contains the current line of the parameter file
-
-       NAMELIST /gust_parameters/                                                                  &
-          gust_module_enabled
-
-       line = ' '
-!
-!--    Try to find gust module package
-       REWIND ( 11 )
-       line = ' '
-       DO   WHILE ( INDEX( line, '&gust_parameters' ) == 0 )
-          READ ( 11, '(A)', END=10 )  line
-       ENDDO
-       BACKSPACE ( 11 )
-!
-!--    Read user-defined namelist
-       READ ( 11, gust_parameters )
-!
-!--    Set flag that indicates that the gust module is switched on
+ SUBROUTINE gust_parin
+
+
+    IMPLICIT NONE
+
+    CHARACTER(LEN=100)  ::  line  !< dummy string that contains the current line of the parameter
+                                  !< file
+    INTEGER(iwp)  ::  io_status   !< status after reading the namelist file
+
+
+    NAMELIST /gust_parameters/  gust_module_enabled
+
+!
+!-- Move to the beginning of the namelist file and try to find and read the namelist.
+    REWIND( 11 )
+    READ( 11, gust_parameters, IOSTAT=io_status )
+
+!
+!-- Action depending on the READ status
+    IF ( io_status == 0 )  THEN
+!
+!--    gust_parameters namelist was found and read correctly. Set flag that indicates that the gust
+!--    module is switched on.
        gust_module_enabled = .TRUE.
 
-10     CONTINUE
-
-
-    END SUBROUTINE gust_parin
+    ELSEIF ( io_status > 0 )  THEN
+!
+!--    gust_parameters namelist was found, but contained errors. Print an error message including
+!--    the line that caused the problem.
+       BACKSPACE( 11 )
+       READ( 11 , '(A)') line
+       CALL parin_fail_message( 'gust_parameters', line )
+
+    ENDIF
+
+ END SUBROUTINE gust_parin