Chimie Théorique » Opt'n Path

    FUNCTION InString(Line,String,Case,Clean,Back)  Result(Pos)

! This function compares two strings

! Input, 5 variables out of which 3 optionals

! Line: the line to search in

! String: the stuff to search in Line

! Case [optional]: if present and true, the case is respected

! Clean [optional]: if present, Line is cleaned

! Back [optional] if present and true, the string is seach backwards

!----------------------------------------------------------------------

!  Copyright 2003-2014 Ecole Normale Supérieure de Lyon,

!  Centre National de la Recherche Scientifique,

!  Université Claude Bernard Lyon 1. All rights reserved.

!

!  This work is registered with the Agency for the Protection of Programs

!  as IDDN.FR.001.100009.000.S.P.2014.000.30625

!

!  Authors: P. Fleurat-Lessard, P. Dayal

!  Contact: optnpath@gmail.com

!

! This file is part of "Opt'n Path".

!

!  "Opt'n Path" is free software: you can redistribute it and/or modify

!  it under the terms of the GNU Affero General Public License as

!  published by the Free Software Foundation, either version 3 of the License,

!  or (at your option) any later version.

!

!  "Opt'n Path" is distributed in the hope that it will be useful,

!  but WITHOUT ANY WARRANTY; without even the implied warranty of

!

!  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

!  GNU Affero General Public License for more details.

!

!  You should have received a copy of the GNU Affero General Public License

!  along with "Opt'n Path". If not, see <http://www.gnu.org/licenses/>.

!

! Contact The Office of Technology Licensing, valorisation@ens-lyon.fr,

! for commercial licensing opportunities.

!----------------------------------------------------------------------

      Use VarTypes

      Use io_module

      implicit none

  INTERFACE

     function valid(string) result (isValid)

       CHARACTER(*), intent(in) :: string

       logical                  :: isValid

     END function VALID

  END INTERFACE

! Input

      CHARACTER(*), INTENT(IN) :: Line

      CHARACTER(*), INTENT(IN) :: String

      LOGICAL, OPTIONAL, INTENT(IN) :: Case

      LOGICAL, OPTIONAL, INTENT(IN) :: Back

      CHARACTER(*), OPTIONAL, INTENT(IN) :: Clean

! Output

! the position of String in Line (the first one) unless Back is present

      INTEGER(KINT) :: Pos

      CHARACTER(LCHARS) :: LineUp,UpString

      LOGICAL :: LCase, LBack, debug

      Debug=valid('InString')

      if (debug) Call header('Entering InString')

      if (present(Case)) THEN

         LCase=Case

      else

         LCase=.FALSE.

      END IF

      if (present(Back)) THEN

         LBack=Back

      ELSE

         LBack=.FALSE.

      END IF

      UpString=String

      if (.NOT.LCase) Call upcase(UpString)

      if (debug) WRITE(*,*) 'Looking for:',Upstring

      IF (present(Clean)) THEN

         Call CleanString(UpString,Clean)

      END IF

      if (debug) WRITE(*,*) 'Looking for clean:',TRIM(Upstring)

      LineUp=Line

      if (.NOT.LCase) Call UpCase(LineUp)

      IF (present(Clean)) THEN

         Call CleanString(LineUp,Clean)

      END IF

      if (debug) WRITE(*,*) 'Comparing with:',Trim(LineUp)

      Pos=INDEX(LineUp,TRIM(UpString),Back=LBack)

      if (debug) Call header('Exiting InString')

      Return

    END FUNCTION InString