C $Header: /u/gcmpack/MITgcm/pkg/mdsio/mdsio_write_meta.F,v 1.6 2013/01/13 22:42:26 jmc Exp $ C $Name: $ #include "MDSIO_OPTIONS.h" CBOP C !ROUTINE: MDS_WRITE_META C !INTERFACE: SUBROUTINE MDS_WRITE_META( I mFileName, I dFileName, I simulName, I titleLine, I filePrec, I nDims, dimList, map2gl, I nFlds, fldList, I nTimRec, timList, misVal, I nrecords, myIter, myThid ) C !DESCRIPTION: \bv C *==========================================================* C | S/R MDS_WRITE_META C | o Write 1 meta file to disk C *==========================================================* C \ev C !USES: IMPLICIT NONE C == Global variables / common blocks #include "SIZE.h" #include "EEPARAMS.h" C !INPUT PARAMETERS: C mFileName (string ) :: complete name of meta-file C dFileName (string ) :: complete name of data-file C simulName (string) :: name of this simulation C titleLine (string) :: title or any descriptive comments C filePrec (integer) :: number of bits per word in data-file (32 or 64) C nDims (integer) :: number of dimensions C dimList (integer) :: array of dimensions, etc. C map2gl (integer) :: used for mapping tiled file to global file C nFlds (integer) :: number of fields in "fldList" C fldList (string) :: array of field names to write C nTimRec (integer) :: number of time-specification in "timList" C timList (real) :: array of time-specifications to write C misVal (real) :: missing value (ignored if = 1.) C nrecords (integer) :: record number C myIter (integer) :: time-step number C myThid (integer) :: my Thread Id number C C !OUTPUT PARAMETERS: C CHARACTER*(*) mFileName CHARACTER*(*) dFileName CHARACTER*(*) simulName CHARACTER*(*) titleLine INTEGER filePrec INTEGER nDims INTEGER dimList(3,nDims) INTEGER map2gl(2) INTEGER nFlds CHARACTER*(8) fldList(*) INTEGER nTimRec _RL timList(*) _RL misVal INTEGER nrecords INTEGER myIter INTEGER myThid CEOP C !FUNCTIONS INTEGER ILNBLNK EXTERNAL C !LOCAL VARIABLES: INTEGER i,j,ii,iL INTEGER mUnit c LOGICAL exst CHARACTER*(MAX_LEN_MBUF) msgBuf C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| C We should *read* the met-file IF it exists to check C that the information we are writing is consistent C with the current contents c INQUIRE( file=mFileName, exist=exst ) C However, it is bloody difficult to parse files in fortran so someone C else can do this. C For now, we will assume everything is ok and that the last record C is written to the last consecutive record in the file. C- Assign a free unit number as the I/O channel for this subroutine CALL MDSFINDUNIT( mUnit, myThid ) C- Open meta-file OPEN( mUnit, file=mFileName, status='unknown', & form='formatted' ) C- Write the simulation name iL = ILNBLNK(simulName) IF ( iL.GT.0 ) THEN WRITE(mUnit,'(3A)') " simulation = { '",simulName(1:iL),"' };" ENDIF C- Write the number of dimensions WRITE(mUnit,'(1X,A,I3,A)') 'nDims = [ ',nDims,' ];' C- For each dimension, write the following: C 1 global size (ie. the size of the global dimension of all files) C 2 global start (ie. the global position of the start of this file) C 3 global end (ie. the global position of the end of this file) ii = 0 DO j=1,nDims ii = MAX(dimList(1,j),ii) ENDDO WRITE(mUnit,'(1X,A)') 'dimList = [' IF ( ii.LT.10000 ) THEN C Small-size domain: DO j=1,nDims IF (j.LT.nDims) THEN WRITE(mUnit,'(1X,3(I5,","))') (dimList(i,j),i=1,3) ELSE WRITE(mUnit,'(1X,2(I5,","),I5)') (dimList(i,j),i=1,3) ENDIF ENDDO ELSE C Large-size domain: DO j=1,nDims IF (j.LT.nDims) THEN WRITE(mUnit,'(1X,3(I10,","))') (dimList(i,j),i=1,3) ELSE WRITE(mUnit,'(1X,2(I10,","),I10)') (dimList(i,j),i=1,3) ENDIF ENDDO ENDIF WRITE(mUnit,'(1X,A)') '];' C- only write if different from default: IF ( map2gl(1).NE.0 .OR. map2gl(2).NE.1 ) THEN WRITE(mUnit,'(1X,2(A,I5),A)') 'map2glob = [ ', & map2gl(1),',',map2gl(2),' ];' ENDIF C- Record the precision of the file IF (filePrec .EQ. precFloat32) THEN WRITE(mUnit,'(1X,A)') "dataprec = [ 'float32' ];" ELSEIF (filePrec .EQ. precFloat64) THEN WRITE(mUnit,'(1X,A)') "dataprec = [ 'float64' ];" ELSE WRITE(msgBuf,'(A)') & ' MDSWRITEMETA: invalid filePrec' CALL PRINT_ERROR( msgBuf, myThid ) STOP 'ABNORMAL END: S/R MDSWRITEMETA' ENDIF C- Record the current record number C This is a proxy for the actual number of records in the file. C If we could read the file then we could do this properly. WRITE(mUnit,'(1X,A,I5,A)') 'nrecords = [ ',nrecords,' ];' C- Record the file-name for the binary data Cveto ii=ILNBLNK( dFileName ) Cveto WRITE(mUnit,'(1X,3A)') 'binarydatafile = [ ',dFileName(1:ii),' ];' C- Write the integer time (integer iteration number) for later record C keeping. If the timestep number is less than 0 then we assume C that the information is superfluous and do not write it. IF ( myIter.GE.0 ) & WRITE(mUnit,'(1X,A,I10,A)') 'timeStepNumber = [ ',myIter,' ];' C- Write list of Time records C note: format might change once we have a better idea of what will C be the time-information to write. IF ( nTimRec.GT.0 ) THEN ii = MIN(nTimRec,20) WRITE(msgBuf,'(1P20E20.12)') (timList(i),i=1,ii) WRITE(mUnit,'(1X,3A)') 'timeInterval = [', msgBuf(1:20*ii),' ];' ENDIF C- Write missing value IF ( misVal.NE.oneRL ) THEN WRITE(mUnit,'(1X,A,1PE21.14,A)') & 'missingValue = [ ',misVal,' ];' ENDIF C- Write list of Fields IF ( nFlds.GT.0 ) THEN WRITE(mUnit,'(1X,A,I4,A)') 'nFlds = [ ', nFlds, ' ];' WRITE(mUnit,'(1X,A)') 'fldList = {' WRITE(mUnit,'(20(A2,A8,A1))') & (" '",fldList(i),"'",i=1,nFlds) WRITE(mUnit,'(1X,A)') '};' ENDIF C- Write title or comments (but ignored by rdmds) iL = ILNBLNK(titleLine) IF ( iL.GT.0 ) THEN WRITE(mUnit,'(3A)')' /* ', titleLine(1:iL), ' */' ENDIF C- Close meta-file CLOSE(mUnit) C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| RETURN END