SUBROUTINE ADI2_HGKY( HDUID, KEY, VID, STATUS ) *+ * Name: * ADI2_HGKY * Purpose: * Get value of keyword from specified HDU * Language: * Starlink Fortran * Invocation: * CALL ADI2_HGKY( HDUID, KEY, VID, STATUS ) * Description: * Get value of keyword from specified HDU. It is an error for the * keyword not to exist. * Arguments: * HDUID = INTEGER (given) * ADI identifier of HDU object * KEY = CHARACTER*(*) (given) * The name of the keyword to be extracted * VID = INTEGER (returned) * The keyword value 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 * Arguments Given: INTEGER HDUID CHARACTER*(*) KEY * Arguments Returned: INTEGER VID * Status: INTEGER STATUS ! Global status * Local Variables: INTEGER KID ! Keywords list LOGICAL SCAND ! HDU has been scanned? LOGICAL THERE ! Keyword exists? *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Have keywords been scanned for this HDU CALL ADI_CGET0L( HDUID, 'Scanned', SCAND, STATUS ) IF ( .NOT. SCAND ) THEN CALL ADI2_SCAN( HDUID, STATUS ) END IF * Locate keywords container CALL ADI_FIND( HDUID, 'Keys', KID, STATUS ) * Does our keyword exist? CALL ADI_THERE( KID, KEY, THERE, STATUS ) IF ( THERE ) THEN * Extract its value CALL ADI_FIND( KID, KEY, VID, STATUS ) ELSE STATUS = SAI__ERROR CALL MSG_SETC( 'KEY', KEY ) CALL ERR_REP( ' ', 'Keyword /^KEY/ does not exist in HDU', : STATUS ) END IF * Release keyword container CALL ERR_BEGIN( STATUS ) CALL ADI_ERASE( KID, STATUS ) CALL ERR_END( STATUS ) * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'ADI2_HGKY', STATUS ) END