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-.TH GETFIELDS 3
-.CT 2 data_man
-.SH NAME
-getfields, getmfields, setfields \(mi break a string into fields
-.SH SYNOPSIS
-.nf
-.B int getfields(str, ptrs, nptrs)
-.B char *str, **ptrs;
-.PP
-.B int getmfields(str, ptrs, nptrs)
-.B char *str, **ptrs;
-.PP
-.B void setfields(fielddelim)
-.B char *fielddelim;
-.fi
-.SH DESCRIPTION
-.I Getfields
-breaks the null-terminated string
-.I str
-into at most
-.I nptrs
-null-terminated fields and places pointers to the start of these fields in the array
-.IR ptrs .
-It returns the number of fields
-and terminates the list of pointers with a zero pointer.
-It overwrites some of the bytes in
-.IR str .
-If there are
-.I nptr
-or more fields, the list will not end with zero
-and the last `field' will extend to the end of the
-input string and may contain delimiters.
-.PP
-A field is defined as a maximal sequence of characters not in a set
-of field delimiters.
-Adjacent fields are separated by exactly one delimiter.
-No field follows a delimiter at the end of string.
-Thus a string of just two delimiter characters
-contains two empty fields,
-and a nonempty string with no delimiters contains
-one field.
-.PP
-.I Getmfields
-is the same as
-.I getfields
-except that fields are separated by maximal strings of
-field delimiters rather than just one.
-.PP
-.I Setfields
-makes the field delimiters (space and tab by default)
-be the characters of the string
-.I fielddelim.
-.SH EXAMPLES
-Print the words in a string, where words are non-whitespace
-strings.
-There is no bound on the number of words.
-.EX
-printwords(string)
-char *string;
-{
-	char *ptrs[2];
-	int n;
-	setfields(" \et\en");		
-	for(n=2; n>=2; string=ptrs[1]) {
-		n = getmfields(string, ptrs, 2);		
-		if(n == 0)
-			break;
-		if(ptrs[0][0] != 0)	/* skip initial blanks */
-			printf("%s\en", ptrs[0]);		
-	}
-}
-.EE
-.SH SEE ALSO
-.IR string (3)