string stuff
in [Fortran]
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From: analyst41 on 7 Oct 2009 21:32 On Oct 7, 10:39 am, Bart Vandewoestyne <MyFirstName.MyLastN...(a)telenet.be> wrote: > I have config files with lines that look as follows: > > on 0.2 0.2 0.02 0.02 0.01 0.01 pulse 5.0e8 100e3 > > The number of spaces between items is arbitrary, and the number > formatting is also arbitrarily chosen by the user. The number of > numbers after 'pulse' can vary. > > I read this as: > > character(len=100) :: pointsource_string > ... > read(unit=my_unit, fmt="(A)", iostat=ios) pointsource_string > > But now I want to split pointsource_string in two, namely so that > the two resulting strings are: > > on 0.2 0.2 0.02 0.02 0.01 0.01 pulse > > and > > 5.0e8 100e3 > > I have looked into my Fortran 95/2003 explained handbook, > searching for a way to skip 7 'whitespace areas'... but i could > not come up with an elegant method to split the string at the > point where I want to split. > > Any suggestions on how to do this? > > Thanks, > Bart > > -- > "Share what you know. Learn what you don't." How about this? character cscr*100,onvar*2,pulsevar*5 dimension var1(6),var2(1000) cscr = 'on 0.2 0.2 0.02 0.02 0.01 0.01 pulse 5.0e8 100e3' var2=-1 read (cscr,*,end=100,err=100) onvar,(var1(j),j=1,6),pulsevar,(var2 (j),j=1,1000) 100 continue print *,trim(onvar),var1,trim(pulsevar),var2(1:5) stop end output: on 0.200000003 0.200000003 1.99999996E-02 1.99999996E-02 9.99999978E-03 9.999999 78E-03 pulse 500000000. 100000.000 -1.00000000 -1.00000000 -1.00000000 Program Completed Press Enter to Continue. initialize var2 to soemthing that will not occr in the input. This is a bit dumb, but I don't know how to capture the value of j when EOF,ERR or EOR occurs in the second implied do-loop. But the first occrrence of -1 will tell you when input data stops.
From: David Kinniburgh on 8 Oct 2009 14:57 > > subroutine find_field (string, field, position, delims, delim, found) > > !-- Find a delimitted field in a string. > !-- 15 Nov 90, Richard Maine. > Richard's parser is nice but would be even more useful if it dealt with quoted strings, i.e. strings containing blanks etc.
From: dpb on 8 Oct 2009 15:16 David Kinniburgh wrote: >> subroutine find_field (string, field, position, delims, delim, found) >> >> !-- Find a delimitted field in a string. >> !-- 15 Nov 90, Richard Maine. >> > > Richard's parser is nice but would be even more useful if it dealt > with quoted strings, i.e. strings containing blanks etc. Don't see why it wouldn't as long as used a unique delimiter (which would have to do, anyway). --
From: dpb on 8 Oct 2009 16:24 David Kinniburgh wrote: >> subroutine find_field (string, field, position, delims, delim, found) >> >> !-- Find a delimitted field in a string. >> !-- 15 Nov 90, Richard Maine. >> > > Richard's parser is nice but would be even more useful if it dealt > with quoted strings, i.e. strings containing blanks etc. OK, I put Richard's routine in a test program as follows-- module strings_package contains subroutine find_field (string, field, position, delims, delim, found) ! code elided here for brevity end subroutine find_field end module strings_package program main use strings_package implicit none character*80 :: s character*80 :: f integer :: posn integer :: i s = 'This,is a,comma-delimited,string,with a,space' posn = 1 do i = 1,6 call find_field(s, f, posn, ',') write(*,*) f(1:len_trim(f)) enddo end program main The output is (as I had expected)... This is a comma-delimited string with a space --
From: David Kinniburgh on 8 Oct 2009 17:11
> s = 'This,is a,comma-delimited,string,with a,space' yes, I see that. I was thinking of something like s = '10 This "quoted string" that' with space delimiters. |