.\" Copyright (c) 1983, 1990 The Regents of the University of California. .\" All rights reserved. .\" .\" This code is derived from software contributed to Berkeley by .\" Asa Romberger and Jerry Berkman. .\" .\" Redistribution and use in source and binary forms are permitted provided .\" that: (1) source distributions retain this entire copyright notice and .\" comment, and (2) distributions including binaries display the following .\" acknowledgement: ``This product includes software developed by the .\" University of California, Berkeley and its contributors'' in the .\" documentation or other materials provided with the distribution and in .\" all advertising materials mentioning features or use of this software. .\" Neither the name of the University nor the names of its contributors may .\" be used to endorse or promote products derived from this software without .\" specific prior written permission. .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. .\" .\" @(#)fsplit.1 6.5 (Berkeley) 7/24/90 .\" .Dd July 24, 1990 .Dt FSPLIT 1 .Os BSD 4.2 .Sh NAME .Nm fsplit .Nd split a multi-routine Fortran file into individual files .Sh SYNOPSIS .Nm fsplit .Op Fl e Ar efile \&... .Op Ar file .Sh DESCRIPTION .Nm Fsplit takes as input either a file or standard input containing Fortran source code. It attempts to split the input into separate routine files of the form .Ar name.f , where .Ar name is the name of the program unit (e.g. function, subroutine, block data or program). The name for unnamed block data subprograms has the form .Ar blkdtaNNN.f where NNN is three digits and a file of this name does not already exist. For unnamed main programs the name has the form .Ar mainNNN.f . If there is an error in classifying a program unit, or if .Ar name.f already exists, the program unit will be put in a file of the form .Ar zzzNNN.f where .Ar zzzNNN.f does not already exist. .Pp .Tw Ar .Tc Fl e .Ws .Ar efile .Cx Normally each subprogram unit is split into a separate file. When the .Fl e option is used, only the specified subprogram units are split into separate files. E.g.: .Pp .Dl fsplit -e readit -e doit prog.f .Pp will split readit and doit into separate files. .Tp .Sh DIAGNOSTICS If names specified via the .Fl e option are not found, a diagnostic is written to standard error. .Sh HISTORY .Nm Fsplit appeared in 4.2 BSD. .Sh AUTHORS Asa Romberger and Jerry Berkman .Sh BUGS .Nm Fsplit assumes the subprogram name is on the first noncomment line of the subprogram unit. Nonstandard source formats may confuse .Nm fsplit . .Pp It is hard to use .Fl e for unnamed main programs and block data subprograms since you must predict the created file name.