287 lines
5.5 KiB
Fortran
287 lines
5.5 KiB
Fortran
!! string handling
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!!
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subroutine STR_TRIM(RETSTR, STR, RETLEN) !!
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!!
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!! if RETSTR=STR then RETSTR is not touched
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!!
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!! Arguments:
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character*(*) STR, RETSTR !! in,out
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integer RETLEN !! out
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integer i
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i=len(str)
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if (str(1:1) .gt. ' ') then
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10 if (str(i:i) .le. ' ') then
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i=i-1
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goto 10
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endif
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else
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20 if (str(i:i) .le. ' ') then
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if (i .gt. 1) then
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i=i-1
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goto 20
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endif
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endif
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endif
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retlen=min(len(retstr),i)
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if (retstr .ne. str) then ! avoid copy to retstr if equal
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retstr=str(1:i)
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endif
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end
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!!
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subroutine STR_UPCASE(RETSTR, STR) !!
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!!
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!! Arguments:
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character STR*(*), RETSTR*(*) !! in,out
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integer i, ch
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retstr=str
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do i=1,len(retstr)
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ch=ichar(retstr(i:i))
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if (ch .ge. ichar('a') .and. ch .le. ichar('z')) then
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retstr(i:i)=char(ch-(ichar('a')-ichar('A')))
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endif
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enddo
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end
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!!
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subroutine STR_LOWCASE(RETSTR, STR) !!
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!!
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!! Arguments:
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character STR*(*), RETSTR*(*) !! in,out
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integer i, ch
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retstr=str
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do i=1,len(retstr)
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ch=ichar(retstr(i:i))
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if (ch .ge. ichar('A') .and. ch .le. ichar('Z')) then
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retstr(i:i)=char(ch+(ichar('a')-ichar('A')))
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endif
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enddo
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end
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!!
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subroutine STR_APPEND(str, length, add) !!
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!!
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implicit none
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character*(*) str, add !!
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integer length !!
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if (len(add)+length .gt. len(str)) then
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if (length .lt. len(str)) then
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str(length+1:)=add
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length=len(str)
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endif
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else
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str(length+1:length+len(add))=add
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length=length+len(add)
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endif
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end
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!!
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integer function STR_CMP(str1, str2) !!
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!!
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!! if strings are equal: return 0
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!! else return position of first different character
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character str1*(*), str2*(*) !!
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integer i
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do i=0,min(len(str1),len(str2))-1
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if (str1(i+1:i+1) .ne. str2(i+1:i+1)) then
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str_cmp=i+1
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return
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endif
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enddo
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do i=len(str1),len(str2)-1
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if (str2(i+1:i+1) .ne. ' ') then
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str_cmp=i+1
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return
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endif
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enddo
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do i=len(str2),len(str1)-1
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if (str1(i+1:i+1) .ne. ' ') then
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str_cmp=i+1
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return
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endif
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enddo
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str_cmp=0
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return
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end
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!!
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subroutine STR_FIRST_NONBLANK(STR, POS) !!
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!!
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!! Arguments:
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character*(*) STR !! in
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integer POS !! out
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integer i
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do i=1,len(str)
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if (str(i:i) .gt. ' ') then
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pos=i
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return
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endif
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enddo
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pos=0
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end
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!!
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subroutine STR_SPLIT(STR, DELIM, START, ENDE) !!
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!!
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!! split string into sequences separated by DELIM
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!! for the first sequence set ENDE=0 and START=0 (or START=n for other start position n+1)
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!! result: end of list: ENDE=-1
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!! empty sequence: START=ENDE+1
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!! normal sequence: STR(START:ENDE) without delimiter
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!!
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!! if ENDE has not a legal value, nothing happens
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character STR*(*), DELIM*(*) !! (in) string, delimiter
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integer START, ENDE !! (in/out) start/end position
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integer i
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if (ende .lt. 0 .or. ende .ge. len(str) .or. start .lt. 0) then
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ende=-1
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RETURN
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endif
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if (ende .ne. 0) start=ende+len(delim)
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if (start .ge. len(str)) then
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if (start .gt. len(str)) then
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ende=-1
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RETURN
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endif
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i=0
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else
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i=index(str(start+1:), delim)
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endif
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if (i .eq. 0) then
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ende=len(str)
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else
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ende=start+i-1
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endif
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start=start+1
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end
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!!
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subroutine STR_GET_ELEM(STR, POS, ELEM) !!
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!!
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!! reads next element ELEM from string STR(POS:). Elements are separated by
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!! spaces combined with one control-char (assume tab) or one comma.
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!! return ' ' when STR(POS:) contains only whitespace or when pos is to high
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!!
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character STR*(*) !! (in) input string
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character ELEM*(*) !! (out) element read
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integer POS !! (in/out) read position
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integer start
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1 if (pos .gt. len(str)) then
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elem=' '
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RETURN
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endif
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if (str(pos:pos) .eq. ' ') then
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pos=pos+1
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goto 1
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endif
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start=pos
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2 if (str(pos:pos) .gt. ' ' .and. str(pos:pos) .ne. ',') then
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pos=pos+1
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if (pos .le. len(str)) then
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goto 2
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endif
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pos=pos-1
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endif
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if (str(pos:pos) .eq. ',' .or. str(pos:pos) .lt. ' ') then
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if (start .eq. pos) then
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elem=str(start:pos)
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if (elem(1:1) .lt. ' ') elem(1:1)=' '
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else
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elem=str(start:pos-1)
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endif
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pos=pos+1
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RETURN
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endif
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elem=str(start:pos-1)
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if (str(pos:) .eq. ' ') then
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RETURN
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endif
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3 if (str(pos:pos) .eq. ' ') then
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pos=pos+1
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if (pos .gt. len(str)) stop 'STR_GET_ELEM: assertion failed'
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goto 3
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endif
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if (str(pos:pos) .eq. ',' .or. str(pos:pos) .lt. ' ') then
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pos=pos+1
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endif
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end
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!!
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subroutine STR_GET_WORD(STR, POS, WORD) !!
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!!
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!! reads next WORD from string STR(POS:). Words are separated by
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!! whitespace.
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!! return ' ' when STR(POS:) contains only whitespace or when pos is to high
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!!
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character STR*(*) !! (in) input string
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character WORD*(*) !! (out) element read
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integer POS !! (in/out) read position
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integer start
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integer i
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1 if (pos .gt. len(str)) then
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word=' '
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RETURN
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endif
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if (str(pos:pos) .le. ' ') then
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pos=pos+1
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goto 1
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endif
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start=pos
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do i=pos,len(str)
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if (str(i:i) .le. ' ') then
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pos=i
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word=str(start:i-1)
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RETURN
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endif
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enddo
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word=str(start:)
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pos=len(str)+1
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RETURN
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end
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!!
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integer function STR_FIND_ELEM(STR, ELEM) !!
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!!
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!! find column index of element ELEM (case insensitive)
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!! only the first 64 chars of each element are checked
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!! 0 is returned when not found
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!!
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character STR*(*), ELEM*(*)
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character ups*64, upe*64
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integer pos, idx
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pos=1
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call str_upcase(upe, elem)
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idx=0
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call str_get_elem(str, pos, ups)
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do while (ups .ne. ' ')
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idx=idx+1
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call str_upcase(ups, ups)
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if (ups .eq. upe) then
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str_find_elem=idx
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RETURN
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endif
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call str_get_elem(str, pos, ups)
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enddo
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str_find_elem=0
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RETURN
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end
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