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.\" 3. 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.\" 30.Dd June 6, 2015 31.Dt MKSTR 1 32.Os 33.Sh NAME 34.Nm mkstr 35.Nd create an error message file by massaging C source 36.Sh SYNOPSIS 37.Nm 38.Op Fl 39.Ar mesgfile 40.Ar prefix Ar 41.Sh DESCRIPTION 42The 43.Nm 44utility creates a file containing error messages extracted from C source, 45and restructures the same C source, to utilize the created error message 46file. 47The intent of 48.Nm 49was to reduce the size of large programs and 50reduce swapping (see 51.Sx BUGS 52section below). 53.Pp 54The 55.Nm 56utility processes each of the specified files, 57placing a restructured version of the input in a file whose name 58consists of the specified 59.Ar prefix 60and the original name. 61A typical usage of 62.Nm 63is 64.Pp 65.Dl "mkstr pistrings xx *.c" 66.Pp 67This command causes all the error messages from the C source 68files in the current directory to be placed in the file 69.Pa pistrings 70and restructured copies of the sources to be placed in 71files whose names are prefixed with 72.Dq Li xx . 73.Pp 74Options: 75.Bl -tag -width indent 76.It Fl 77Error messages are placed at the end of the specified 78message file for recompiling part of a large 79.Nm Ns ed 80program. 81.El 82.Pp 83The 84.Nm 85utility finds error messages in the source by 86searching for the string 87.Sq Li error(" 88in the input stream. 89Each time it occurs, the C string starting at the 90.Ql \&" 91is stored 92in the message file followed by a null character and a new-line character; 93The new source is restructured with 94.Xr lseek 2 95pointers into the error message file for retrieval. 96.Bd -literal -offset indent 97char efilname = "/usr/lib/pi_strings"; 98int efil = -1; 99 100error(a1, a2, a3, a4) 101{ 102 char buf[256]; 103 104 if (efil < 0) { 105 efil = open(efilname, 0); 106 if (efil < 0) 107 err(1, "%s", efilname); 108 } 109 if (lseek(efil, (off_t)a1, SEEK_SET) < 0 || 110 read(efil, buf, 256) <= 0) 111 err(1, "%s", efilname); 112 printf(buf, a2, a3, a4); 113} 114.Ed 115.Sh SEE ALSO 116.Xr gencat 1 , 117.Xr xstr 1 , 118.Xr lseek 2 119.Sh HISTORY 120The 121.Nm 122utility first appeared in 123.Bx 1 . 124.Sh AUTHORS 125.An -nosplit 126.An Bill Joy 127and 128.An Chuck Haley , 1291977. 130.Sh BUGS 131The 132.Nm 133utility was intended for the limited architecture of the PDP 11 family. 134Very few programs actually use it. 135The memory savings are negligible in modern computers. 136