1.\" $NetBSD: fsplit.1,v 1.9 2003/08/07 11:13:50 agc Exp $ 2.\" 3.\" Copyright (c) 1983, 1990, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" Asa Romberger and Jerry Berkman. 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)fsplit.1 8.1 (Berkeley) 6/6/93 33.\" 34.Dd June 6, 1993 35.Dt FSPLIT 1 36.Os 37.Sh NAME 38.Nm fsplit 39.Nd split a multi-routine Fortran file into individual files 40.Sh SYNOPSIS 41.Nm 42.Op Fl e Ar efile 43\&... 44.Op Ar file 45.Sh DESCRIPTION 46.Nm 47takes as input either a file or standard input containing Fortran source code. 48It attempts to split the input into separate routine files of the 49form 50.Ar name.f , 51where 52.Ar name 53is the name of the program unit (e.g. function, subroutine, block data or 54program). 55The name for unnamed block data subprograms has the form 56.Ar blkdtaNNN.f 57where NNN is three digits and a file of this name does not already exist. 58For unnamed main programs the name has the form 59.Ar mainNNN.f . 60If there is an error in classifying a program unit, or if 61.Ar name.f 62already exists, 63the program unit will be put in a file of the form 64.Ar zzzNNN.f 65where 66.Ar zzzNNN.f 67does not already exist. 68.Pp 69.Bl -tag -width Fl 70.It Fl e Ar efile 71Normally each subprogram unit is split into a separate file. 72When the 73.Fl e 74option is used, only the specified subprogram units are split into separate 75files. 76E.g.: 77.Pp 78.Dl fsplit -e readit -e doit prog.f 79.Pp 80will split readit and doit into separate files. 81.El 82.Sh DIAGNOSTICS 83If names specified via the 84.Fl e 85option are not found, a diagnostic is written to 86standard error. 87.Sh HISTORY 88The 89.Nm 90command 91appeared in 92.Bx 4.2 . 93.Sh AUTHORS 94Asa Romberger and Jerry Berkman 95.Sh BUGS 96.Nm 97assumes the subprogram name is on the first noncomment line of the subprogram 98unit. 99Nonstandard source formats may confuse 100.Nm . 101.Pp 102It is hard to use 103.Fl e 104for unnamed main programs and block data subprograms since you must 105predict the created file name. 106