SUBROUTINE HSI2_PTXT( NARG, ARGS, OARG, STATUS ) *+ * Name: * HSI2_PTXT * Purpose: * Write history text to current history record in an FITS file * Language: * Starlink Fortran * Invocation: * CALL HSI2_PTXT( NARG, ARGS, OARG, STATUS ) * Description: * Creates a new history record in an FITS file. * 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}... * Algorithm: * {algorithm_description}... * Accuracy: * {routine_accuracy} * Timing: * {routine_timing} * References: * HSI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/hsi.html * Keywords: * package:hsi, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 6 Jun 1996 (DJA): * Original version, adapted from HDS version * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! SAE constants INCLUDE 'ADI_PAR' ! ADI constants INCLUDE 'HSI_PAR' * Arguments Given: INTEGER NARG, ARGS(*) * Arguments Returned: INTEGER OARG * Status: INTEGER STATUS ! Global status * Local Constants: CHARACTER*1 NUL ! String separator PARAMETER ( NUL = CHAR(0) ) INTEGER TLEN ! History text length PARAMETER ( TLEN = 80 ) * Local Variables: CHARACTER*512 LINE ! Line of text INTEGER CID ! String array slice INTEGER I ! Loop over LINE INTEGER ILINE ! Loop over lines INTEGER IPOS, NPOS ! String pointers INTEGER LLEN ! Length of LINE INTEGER NLINE ! # lines to write INTEGER NNUL ! # nulls in LINE INTEGER PHDU ! Primary HDU *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * No output from this method OARG = ADI__NULLID * Locate primary HDU CALL ADI2_FNDHDU( ARGS(1), 'PRIMARY', .TRUE., PHDU, STATUS ) * Get number of lines CALL ADI_SIZE( ARGS(2), NLINE, STATUS ) * Write lines one at a time DO ILINE = 1, NLINE * Locate ILINE'th ADI string and get its data CALL ADI_CELL( ARGS(2), 1, ILINE, CID, STATUS ) CALL ADI_CLEN( CID, LLEN, STATUS ) CALL ADI_GET0C( CID, LINE(:LLEN), STATUS ) LLEN = MIN( LLEN, LEN(LINE) ) CALL ADI_ERASE( CID, STATUS ) * If the string contains nulls we need to split it into several * lines. Count the nulls and extend the text array NNUL = 0 DO I = 1, LLEN IF ( LINE(I:I) .EQ. NUL ) NNUL = NNUL + 1 END DO * Write each bit of LINE to a new HDS string IPOS = 1 DO WHILE ( IPOS .LE. LLEN ) * Find position of next null NPOS = INDEX( LINE(IPOS:LLEN), NUL ) IF ( NPOS .EQ. 0 ) THEN NPOS = LLEN + 1 ELSE NPOS = NPOS + IPOS - 1 END IF * Write the HDS string CALL ADI2_HPHIS( PHDU, ' '//LINE(IPOS:NPOS-1), STATUS ) * Next bit of line IPOS = NPOS + 1 END DO END DO * Release the HDU CALL ADI_ERASE( PHDU, STATUS ) * Report any errors 99 IF ( STATUS .NE. SAI__OK ) THEN CALL AST_REXIT( 'HSI2_PTXT', STATUS ) END IF END