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.Dd June 6, 2015 29.Dt MKSTR 1 30.Os 31.Sh NAME 32.Nm mkstr 33.Nd create an error message file by massaging C source 34.Sh SYNOPSIS 35.Nm 36.Op Fl 37.Ar mesgfile 38.Ar prefix Ar 39.Sh DESCRIPTION 40The 41.Nm 42utility creates a file containing error messages extracted from C source, 43and restructures the same C source, to utilize the created error message 44file. 45The intent of 46.Nm 47was to reduce the size of large programs and 48reduce swapping (see 49.Sx BUGS 50section below). 51.Pp 52The 53.Nm 54utility processes each of the specified files, 55placing a restructured version of the input in a file whose name 56consists of the specified 57.Ar prefix 58and the original name. 59A typical usage of 60.Nm 61is 62.Pp 63.Dl "mkstr pistrings xx *.c" 64.Pp 65This command causes all the error messages from the C source 66files in the current directory to be placed in the file 67.Pa pistrings 68and restructured copies of the sources to be placed in 69files whose names are prefixed with 70.Dq Li xx . 71.Pp 72Options: 73.Bl -tag -width indent 74.It Fl 75Error messages are placed at the end of the specified 76message file for recompiling part of a large 77.Nm Ns ed 78program. 79.El 80.Pp 81The 82.Nm 83utility finds error messages in the source by 84searching for the string 85.Sq Li error(" 86in the input stream. 87Each time it occurs, the C string starting at the 88.Ql \&" 89is stored 90in the message file followed by a null character and a new-line character; 91The new source is restructured with 92.Xr lseek 2 93pointers into the error message file for retrieval. 94.Bd -literal -offset indent 95char efilname = "/usr/lib/pi_strings"; 96int efil = -1; 97 98error(a1, a2, a3, a4) 99{ 100 char buf[256]; 101 102 if (efil < 0) { 103 efil = open(efilname, 0); 104 if (efil < 0) 105 err(1, "%s", efilname); 106 } 107 if (lseek(efil, (off_t)a1, SEEK_SET) < 0 || 108 read(efil, buf, 256) <= 0) 109 err(1, "%s", efilname); 110 printf(buf, a2, a3, a4); 111} 112.Ed 113.Sh SEE ALSO 114.Xr gencat 1 , 115.Xr xstr 1 , 116.Xr lseek 2 117.Sh HISTORY 118The 119.Nm 120utility first appeared in 121.Bx 1 . 122.Sh AUTHORS 123.An -nosplit 124.An Bill Joy 125and 126.An Chuck Haley , 1271977. 128.Sh BUGS 129The 130.Nm 131utility was intended for the limited architecture of the PDP 11 family. 132Very few programs actually use it. 133The memory savings are negligible in modern computers. 134