SUBROUTINE ADI2_EXIREN( FNAME, STATUS ) *+ * Name: * ADI2_EXIREN * Purpose: * Rename a file to its backup version, if it exists * Language: * Starlink Fortran 77 * Invocation: * CALL ADI2_EXIREN( FNAME, STATUS ) * Description: * Rename a file to its backup version, if it already exists. * Arguments: * FNAME = CHARACTER*(*) (given) * Name of the file to rename * STATUS = INTEGER (given and returned) * The global status. * Examples: * {routine_example_text} * {routine_example_description} * Pitfalls: * {pitfall_description}... * Notes: * {routine_notes}... * Prior Requirements: * {routine_prior_requirements}... * Side Effects: * {routine_side_effects}... * Algorithm: * {algorithm_description}... * Accuracy: * {routine_accuracy} * Timing: * {routine_timing} * External Routines Used: * {name_of_facility_or_package}: * {routine_used}... * Implementation Deficiencies: * {routine_deficiencies}... * {machine}-specific features used: * {routine_machine_specifics}... * {DIY_prologue_heading}: * {DIY_prologue_text} * References: * ADI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/adi.html * Keywords: * package:adi, usage:private, FITS * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 6 Feb 1995 (DJA): * Original version. * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! Standard SAE constants * Arguments Given: CHARACTER*(*) FNAME * Status: INTEGER STATUS ! Global status * External References: EXTERNAL CHR_LEN INTEGER CHR_LEN * Local Variables: CHARACTER*20 SYSNAME, NODENAME, ! Operating system : RELEASE, VERSION, ! description : MACHINE CHARACTER*200 LFILE ! Local file name INTEGER FLEN ! File name length LOGICAL THERE ! File exists? *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Don't bother with this on VMS CALL PSX_UNAME( SYSNAME, NODENAME, RELEASE, VERSION, MACHINE, : STATUS ) IF ( (INDEX(SYSNAME,'VMS').EQ.0) .AND. : (INDEX(SYSNAME,'vms').EQ.0) ) THEN * Make local copy of file LFILE = FNAME FLEN = CHR_LEN(FNAME) LFILE(FLEN+1:FLEN+1) = '~' * Does file exist? INQUIRE( FILE=FNAME(:FLEN), EXIST=THERE ) IF ( THERE ) THEN * Does a backup file already exist? INQUIRE( FILE=LFILE(:FLEN+1), EXIST=THERE ) * If so, delete it IF ( THERE ) THEN CALL UTIL_DELETE( LFILE(:FLEN+1), STATUS ) END IF * Rename old file CALL UTIL_RENAME( LFILE(:FLEN), LFILE(:FLEN+1), STATUS ) END IF * End of VMS test END IF * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'ADI2_EXIREN', STATUS ) END