SUBROUTINE HSI1_GETREC( NARG, ARGS, OARG, STATUS ) *+ * Name: * HSI1_GETREC * Purpose: * Retrieve a particular history record from an HDS dataset * Language: * Starlink Fortran * Invocation: * CALL HSI1_GETREC( NARG, ARGS, OARG, STATUS ) * Description: * Retrieve a particular history record from an HDS dataset. Checks * whether the record number is legal, and returns creator, date and * possibly text. * Arguments: * NARG = INTEGER (given) * Number of method arguments * ARGS(*) = INTEGER (given) * ADI identifier of method arguments * OARG = INTEGER (returned) * Output data * 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: * HSI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/hsi.html * Keywords: * package:hsi, usage:private, history, read * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 16 Mar 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' INCLUDE 'DAT_PAR' * Arguments Given: INTEGER NARG ! # arguments INTEGER ARGS(*) ! Method arguments * Arguments Returned: INTEGER OARG ! Returned data * Status: INTEGER STATUS ! Global status * External References: EXTERNAL CHR_LEN INTEGER CHR_LEN * Local Variables: CHARACTER*30 CDATE ! Creation date CHARACTER*(DAT__SZLOC) CRLOC ! Current RECORDS cell CHARACTER*(DAT__SZLOC) HLOC ! HISTORY object CHARACTER*30 HOST ! History host CHARACTER*(DAT__SZLOC) LOC ! Dataset locator CHARACTER*(DAT__SZLOC) RLOC ! RECORDS object CHARACTER*132 TEXT ! History text CHARACTER*(DAT__SZLOC) TXLOC ! TEXT object CHARACTER*(DAT__SZLOC) TXCLOC ! TEXT object cell INTEGER CID ! ADI array cell INTEGER CREC ! Current # records INTEGER ILINE ! Loop over text lines INTEGER IREC ! Record required INTEGER NLINE ! Number of TEXT lines LOGICAL THERE ! Component exists? *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Extract dataset locator CALL ADI1_GETLOC( ARGS(1), LOC, STATUS ) * Locate the top-level HISTORY object CALL DAT_FIND( LOC, 'HISTORY', HLOC, STATUS ) * Located ok? IF ( STATUS .EQ. SAI__OK ) THEN * Current record number CALL CMP_GET0I( HLOC, 'CURRENT_RECORD', CREC, STATUS ) * Number required CALL ADI_GET0I( ARGS(2), IREC, STATUS ) IF ( (IREC.LE.0) .OR. (IREC.GT.CREC) ) THEN CALL MSG_SETI( 'REC', IREC ) CALL ERR_REP( ' ', 'Illegal history record number /^REC/', : STATUS ) END IF * Locate the IREC'th record CALL DAT_FIND( HLOC, 'RECORDS', RLOC, STATUS ) CALL DAT_CELL( RLOC, 1, IREC, CRLOC, STATUS ) * Construct return data CALL ADI_NEW0( 'HistoryRecord', OARG, STATUS ) * Write date CALL CMP_GET0C( CRLOC, 'DATE', CDATE, STATUS ) CALL ADI_CPUT0C( OARG, 'Date', CDATE, STATUS ) * Write command CALL CMP_GET0C( CRLOC, 'COMMAND', TEXT, STATUS ) CALL ADI_CPUT0C( OARG, 'Creator', TEXT(:CHR_LEN(TEXT)), STATUS ) * Write host CALL DAT_THERE( CRLOC, 'HOST', THERE, STATUS ) IF ( THERE ) THEN CALL CMP_GET0C( CRLOC, 'HOST', HOST, STATUS ) ELSE HOST = 'unknown' END IF CALL ADI_CPUT0C( OARG, 'Host', HOST, STATUS ) * Write text CALL DAT_THERE( CRLOC, 'TEXT', THERE, STATUS ) IF ( THERE ) THEN CALL DAT_FIND( CRLOC, 'TEXT', TXLOC, STATUS ) CALL DAT_SIZE( TXLOC, NLINE, STATUS ) CALL ADI_CNEW1C( OARG, 'Text', NLINE, STATUS ) DO ILINE = 1, NLINE CALL DAT_CELL( TXLOC, 1, ILINE, TXCLOC, STATUS ) CALL ADI_CCELL( OARG, 'Text', 1, ILINE, CID, STATUS ) CALL DAT_GET0C( TXCLOC, TEXT, STATUS ) CALL ADI_PUT0C( CID, TEXT(:MAX(1,CHR_LEN(TEXT))), STATUS ) CALL ADI_ERASE( CID, STATUS ) CALL DAT_ANNUL( TXCLOC, STATUS ) END DO CALL DAT_ANNUL( TXLOC, STATUS ) END IF * Release locators CALL DAT_ANNUL( CRLOC, STATUS ) CALL DAT_ANNUL( RLOC, STATUS ) CALL DAT_ANNUL( HLOC, STATUS ) ELSE CALL ERR_ANNUL( STATUS ) OARG = ADI__NULLID END IF * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'HSI1_GETREC', STATUS ) END