1.\" Copyright (c) 1980, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 4. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)mkstr.1 8.1 (Berkeley) 6/6/93 29.\" $FreeBSD$ 30.\" 31.Dd November 1, 2002 32.Dt MKSTR 1 33.Os 34.Sh NAME 35.Nm mkstr 36.Nd create an error message file by massaging C source 37.Sh SYNOPSIS 38.Nm 39.Op Fl 40.Ar mesgfile 41.Ar prefix Ar 42.Sh DESCRIPTION 43The 44.Nm 45utility creates a file containing error messages extracted from C source, 46and restructures the same C source, to utilize the created error message 47file. 48The intent of 49.Nm 50was to reduce the size of large programs and 51reduce swapping (see 52.Sx BUGS 53section below). 54.Pp 55The 56.Nm 57utility processes each of the specified files, 58placing a restructured version of the input in a file whose name 59consists of the specified 60.Ar prefix 61and the original name. 62A typical usage of 63.Nm 64is 65.Pp 66.Dl "mkstr pistrings xx *.c" 67.Pp 68This command causes all the error messages from the C source 69files in the current directory to be placed in the file 70.Pa pistrings 71and restructured copies of the sources to be placed in 72files whose names are prefixed with 73.Dq Li xx . 74.Pp 75Options: 76.Bl -tag -width indent 77.It Fl 78Error messages are placed at the end of the specified 79message file for recompiling part of a large 80.Nm Ns ed 81program. 82.El 83.Pp 84The 85.Nm 86utility finds error messages in the source by 87searching for the string 88.Sq Li error(" 89in the input stream. 90Each time it occurs, the C string starting at the 91.Ql \&" 92is stored 93in the message file followed by a null character and a new-line character; 94The new source is restructured with 95.Xr lseek 2 96pointers into the error message file for retrieval. 97.Bd -literal -offset indent 98char efilname = "/usr/lib/pi_strings"; 99int efil = -1; 100 101error(a1, a2, a3, a4) 102{ 103 char buf[256]; 104 105 if (efil < 0) { 106 efil = open(efilname, 0); 107 if (efil < 0) 108 err(1, "%s", efilname); 109 } 110 if (lseek(efil, (off_t)a1, SEEK_SET) < 0 || 111 read(efil, buf, 256) <= 0) 112 err(1, "%s", efilname); 113 printf(buf, a2, a3, a4); 114} 115.Ed 116.Sh SEE ALSO 117.Xr gencat 1 , 118.Xr xstr 1 , 119.Xr lseek 2 120.Sh HISTORY 121An 122.Nm 123utility appeared in 124.Bx 3.0 . 125.Sh BUGS 126The 127.Nm 128utility was intended for the limited architecture of the PDP 11 family. 129Very few programs actually use it. 130The memory savings are negligible in modern computers. 131