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parse.f90
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parse.f90
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!Crown Copyright 2014 AWE.
!
! This file is part of TeaLeaf.
!
! TeaLeaf is free software: you can redistribute it and/or modify it under
! the terms of the GNU General Public License as published by the
! Free Software Foundation, either version 3 of the License, or (at your option)
! any later version.
!
! TeaLeaf 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 General Public License for more
! details.
!
! You should have received a copy of the GNU General Public License along with
! TeaLeaf. If not, see http://www.gnu.org/licenses/.
!> @brief String manipulation utilities
!> @author David Beckingsale, Wayne Gaudin
!> @details Provides utilities to manipulate and parse Fortran strings.
MODULE tea_case_change
USE data_module
CONTAINS
FUNCTION tolower(string) RESULT (tolower_result)
IMPLICIT NONE
CHARACTER (LEN=*), INTENt(IN) :: string
CHARACTER (LEN=LEN(string)) :: tolower_result
INTEGER :: i,ii
DO i=1,len(string)
ii=IACHAR(string(i:i))
SELECT CASE (ii)
CASE (65:90)
tolower_result(i:i)=ACHAr(ii+32)
CASE DEFAULT
tolower_result(i:i)=string(i:i)
END SELECT
ENDDO
END FUNCTION TOLOWER
FUNCTION toupper(string) RESULT (toupper_result)
IMPLICIT NONE
CHARACTER (LEN=*), INTENT(IN) :: string
CHARACTER (LEN=LEN(string)) :: toupper_result
INTEGER :: i,ii
DO i=1,LEN(string)
ii=IACHAR(string(i:i))
SELECT CASE (ii)
CASE (97:122)
toupper_result(i:i)=ACHAR(ii-32)
CASE DEFAULT
toupper_result(i:i)=string(i:i)
END SELECT
ENDDO
END FUNCTION toupper
END MODULE tea_case_change
MODULE tea_isitanint_mod
CONTAINS
FUNCTION isitanint(instring) RESULT(isitanint_result)
IMPLICIT NONE
CHARACTER(LEN=*), INTENT(IN) :: instring
LOGICAL :: isitanint_result
INTEGER :: i,ii
isitanint_result=.TRUE.
DO i=1,LEN(instring)
ii=IACHAR(instring(i:i))
SELECT CASE(ii)
CASE (43,45,48:57)
IF(i.NE.1) THEN
IF(ii.EQ.43 .OR.ii.EQ.45) isitanint_result=.FALSE.
ENDIF
CASE DEFAULT
isitanint_result=.FALSE.
END SELECT
ENDDO
END FUNCTION isitanint
END MODULE tea_isitanint_mod
MODULE parse_module
USE data_module
USE report_module
IMPLICIT NONE
INTEGER, PARAMETER :: len_max=g_len_max &
,dummy=0
INTEGER :: iu ! Current unit number.
CHARACTER(LEN=len_max) :: mask &
,line &
,here &
,sel &
,rest
CONTAINS
FUNCTION parse_init(iunit,cmask)
! Initialise for new set of reads.
IMPLICIT NONE
INTEGER :: parse_init
INTEGER :: iunit
CHARACTER(LEN=*) :: cmask
INTEGER :: ios
iu=iunit
mask=cmask ! Set mask for which part of the file we are interested in.
line=''
here=''
rest=''
REWIND(UNIT=iunit,IOSTAT=ios)
parse_init=ios
END FUNCTION parse_init
FUNCTION parse_getline(dummy)
IMPLICIT NONE
INTEGER :: parse_getline
INTEGER ,INTENT(IN) :: dummy
INTEGER :: s,ios,i,parse_out
CHARACTER(LEN=len_max) :: l,nugget,string_temp1,string_temp2
DO
READ(UNIT=iu,IOSTAT=ios,FMT='(a200)') l ! Read in next line.
parse_getline=ios
IF(parse_getline.NE.0) RETURN
DO i=1,len_trim(l)
if (IACHAR(l(i:)).LT.32.OR.IACHAR(l(i:i)).GT.128) l(i:i)=' '
ENDDO
l=TRIM(ADJUSTL(l))
s=SCAN(l,'!')
IF(s.GT.0) l=TRIM(l(1:s-1))
s=scan(l,';')
IF(s.GT.0) l=TRIM(l(1:s-1))
IF( ABS(dummy).NE.1) THEN
DO i=1,LEN(l)
IF(IACHAR(l(i:i)).GT.64.AND.IACHAR(l(i:i)).LT.91) &
l(i:i)=ACHAR(IACHAR(l(i:i))+32)
ENDDO
ENDIF
IF(dummy.LT.0)THEN
line=l
ELSE
DO i=1,LEN(l)
IF(l(i:i).EQ.'='.OR.l(i:i).EQ.',') l(i:i)=' '
ENDDO
IF(l(1:8).NE.'*select:')THEN
IF(l(1:1).EQ.'*')THEN
s=SCAN(l,' ')
IF(s.EQ.0) s=LEN_TRIM(l)+1
nugget=TRIM(l(1:s-1))
IF(nugget(2:4).EQ.'end')THEN
nugget='*'//TRIM(nugget(5:))
s=SCAN(here,'*',.TRUE.)
parse_out=parse_scan(sel,nugget)
IF(sel.NE.''.AND.parse_out.GT.0)THEN
nugget=''
ENDIF
IF(nugget.GT.'')THEN
string_temp1=TRIM(here(s:))
string_temp2=TRIM(nugget(1:))
IF(string_temp1.NE.string_temp2)THEN
WRITE(*,*) 'l: ',trim(adjustl(l))
WRITE(*,*) 'nugget: ',trim(adjustl(nugget))
WRITE(*,*) 'here: ',trim(adjustl(here))
WRITE(*,*) 'sel: ',trim(adjustl(sel))
CALL report_error('parse_getline','Unmatched */*end pair.')
ELSE
IF(mask.EQ.here) THEN
here=here(1:s-1)
parse_getline=-1
rest='returned_before_eof'
RETURN
ENDIF
here=here(1:s-1)
ENDIF
ENDIF
ELSE
parse_out=parse_scan(sel,nugget)
IF(sel.NE.''.AND.parse_out.GT.0)THEN
nugget=''
ENDIF
here=TRIM(TRIM(here)//nugget)
IF(rest.EQ.'returned_before_eof') rest=''
rest=TRIM(TRIM(rest)//l(s:))
ENDIF
line=''
ELSE
IF(here.EQ.mask.OR.mask.EQ.'')THEN
line=TRIM(l)
ELSE
line=''
ENDIF
ENDIF
ELSE
sel=TRIM(l(9:))
line=''
ENDIF
ENDIF
IF(line.GT.'') EXIT
ENDDO
END FUNCTION parse_getline
RECURSIVE FUNCTION parse_getword(wrap) RESULT(getword)
INTEGER :: stat
LOGICAL :: wrap
CHARACTER(LEN=len_max) :: getword,temp
INTEGER :: s
DO WHILE(line(1:1).EQ.' '.AND.LEN_TRIM(line).GT.0)
line=TRIM(line(2:))
ENDDO
s=SCAN(line,' ')
IF(s.EQ.0) s=LEN_TRIM(line)
temp=TRIM(line(1:s))
IF(temp.EQ.ACHAR(92).OR.(temp.EQ.''.AND.wrap))THEN
temp=''
stat=parse_getline(dummy)
IF(stat.EQ.0) temp=parse_getword(wrap)
getword=temp
ELSE
getword=temp
line=TRIM(line(s+1:))
ENDIF
END FUNCTION parse_getword
FUNCTION parse_getival(word)
USE tea_module
CHARACTER(LEN=*) :: word
INTEGER :: temp,parse_getival
INTEGER :: ios
READ(UNIT=word,FMT="(I7)",IOSTAT=ios) temp
IF(ios.NE.0)THEN
CALL report_error('parse_getival','Error attempting to convert to integer:'//word)
CALL tea_abort
ENDIF
parse_getival=temp
END FUNCTION parse_getival
FUNCTION parse_getlval(word)
USE tea_module
CHARACTER(LEN=*) :: word
LOGICAL :: temp,parse_getlval
INTEGER :: ios
ios=0
temp=.FALSE.
SELECT CASE(word)
CASE('on')
temp=.TRUE.
CASE('true')
temp=.TRUE.
CASE('off')
temp=.FALSE.
CASE('false')
temp=.FALSE.
CASE DEFAULT
ios=99999
END SELECT
IF(ios.NE.0)THEN
CALL report_error('parse_getlval','Error attempting to convert to logical:'//word)
CALL tea_abort
ENDIF
parse_getlval=temp
END FUNCTION parse_getlval
FUNCTION parse_getrval(word)
USE tea_module
CHARACTER(LEN=*) :: word
REAL(KIND=8) :: temp,parse_getrval
INTEGER :: ios
! Make an integer into a float if necessary.
IF(SCAN(word,'.').EQ.0) word=TRIM(TRIM(word)//'.0')
READ(UNIT=word,FMT="(E27.20)",IOSTAT=ios) temp
IF(ios.NE.0)THEN
CALL report_error('parse_getrval','Error attempting to convert to real:'//word)
CALL tea_abort
ENDIF
parse_getrval=temp
END FUNCTION parse_getrval
FUNCTION parse_scan(string,set)
! Improved version of F90 SCAN.
INTEGER :: parse_scan
CHARACTER(LEN=*),INTENT(IN) :: string,set
CHARACTER(LEN=LEN_MAX) :: set_temp
INTEGER :: i,l,temp
l=LEN_TRIM(set)-1
temp=0
set_temp=TRIM(set)
DO i=1,LEN_TRIM(string)-l
IF(string(i:i+l).EQ.set_temp)THEN
temp=i
EXIT
ENDIF
ENDDO
parse_scan=temp
END FUNCTION parse_scan
END MODULE parse_module