SUBROUTINE ADI1_PARSE( FSPEC, LFILEC, FSUBC, LSUBC, STATUS ) *+ * Name: * ADI1_PARSE * Purpose: * Parse an HDS file specification. * Language: * Starlink Fortran * Invocation: * CALL ADI1_PARSE( FSPEC, LFILEC, FSUBC, LSUBC, STATUS ) * Description: * Parse an HDS object specification. This consists of a filename with * the filetype ".sdf" omitted, followed by optional substructure, * followed optionally by %hds. * Arguments: * FSPEC = CHAR (Given) * Name of the object on which FITS access to be attempted * LFILEC = INTEGER (Returned) * Index of last character in filemname proper * FSUBC = INTEGER (Returned) * First character of sub-structure if present. Zero otherwise * LSUBC = INTEGER (Returned) * Last character of sub-structure if present. Zero otherwise * STATUS = INTEGER (Given and returned) * The global status. * Examples: * {routine_example_text} * {routine_example_description} * Notes: * {routine_notes}... * Prior Requirements: * {routine_prior_requirements}... * Side Effects: * {routine_side_effects}... * Algorithm: * {algorithm_description}... * 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: * 15 Jul 1994 (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*(*) FSPEC * Arguments Returned: INTEGER LFILEC INTEGER FSUBC,LSUBC * Status: INTEGER STATUS ! Global status * External references: EXTERNAL CHR_LEN INTEGER CHR_LEN * Local Variables: INTEGER FLEN ! Length of FSPEC INTEGER ICP ! Character index INTEGER NCP ! Character index *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * Length of FSPEC FLEN = CHR_LEN( FSPEC ) * Look for % delimiter, so that trailing representation can be ignored ICP = FLEN DO WHILE ( (ICP.GT.0) .AND. (FSPEC(ICP:ICP).NE.'%') ) ICP = ICP - 1 END DO IF ( ICP .NE. 0 ) FLEN = ICP - 1 * Default values LFILEC = FLEN LSUBC = 0 FSUBC = 0 * Find first character after any slash present ICP = LFILEC DO WHILE ( (ICP.GT.0) .AND. (FSPEC(ICP:ICP).NE.'/') ) ICP = ICP - 1 END DO ICP = ICP + 1 * Position of period after this point? If present then this denotes * sub-structure start. NCP = INDEX( FSPEC(ICP:LFILEC), '.' ) IF ( NCP .GT. 0 ) THEN NCP = NCP + ICP - 1 FSUBC = NCP + 1 LSUBC = LFILEC LFILEC = NCP - 1 END IF END