SUBROUTINE ADI2_FNDHDU( ID, HDU, CREATE, HDUID, STATUS ) *+ * Name: * ADI2_FNDHDU * Purpose: * Locate an HDU in a FITSfile, creating if required * Language: * Starlink Fortran * Invocation: * CALL ADI2_FNDHDU( ID, HDU, CREATE, HDUID, STATUS ) * Description: * Locate an HDU in a FITSfile. It is an error if the HDU does not * exist. HDUs are located by name, defined by the EXTNAME keyword. * Arguments: * ID = INTEGER (given) * ADI identifier of FITSfile object * HDU = CHARACTER*(*) (given) * Name of the HDU we're loooking for * CREATE = LOGICAL (given) * Create if not present? * HDUID = INTEGER (returned) * ADI identifier of HDU cache object * 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}... * References: * ADI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/adi.html * Keywords: * package:adi, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 11 Sep 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 INCLUDE 'ADI_PAR' * Arguments Given: INTEGER ID CHARACTER*(*) HDU LOGICAL CREATE * Arguments Returned: INTEGER HDUID * Status: INTEGER STATUS ! Global status * Local Variables: LOGICAL DIDCRE ! Did we create HDU? *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Locate the named HDU CALL ADI2_CFIND( ID, HDU, ' ', ' ', CREATE, .FALSE., : ' ', 0, 0, DIDCRE, HDUID, STATUS ) * Issue error if not there IF ( STATUS .EQ. SAI__OK ) THEN * If there, check not marked for delete IF ( HDUID .NE. ADI__NULLID ) THEN CALL ADI2_CHKDEL( HDUID, STATUS ) * otherwise error ELSE STATUS = SAI__ERROR CALL MSG_SETC( 'H', HDU ) CALL ERR_REP( ' ', 'Unable to locate HDU ^H in file', : STATUS ) END IF END IF * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'ADI2_FNDHDU', STATUS ) END