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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. 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.\" @(#)mkstr.1 8.1 (Berkeley) 6/6/93 33.\" $FreeBSD$ 34.\" 35.Dd November 1, 2002 36.Dt MKSTR 1 37.Os 38.Sh NAME 39.Nm mkstr 40.Nd create an error message file by massaging C source 41.Sh SYNOPSIS 42.Nm 43.Op Fl 44.Ar messagefile 45.Ar prefix Ar 46.Sh DESCRIPTION 47The 48.Nm 49utility creates files containing error messages extracted from C source, 50and restructures the same C source, to utilize the created error message 51file. 52The intent of 53.Nm 54was to reduce the size of large programs and 55reduce swapping (see 56.Sx BUGS 57section below). 58.Pp 59The 60.Nm 61utility processes each of the specified 62.Ar files , 63placing a restructured version of the input in a file whose name 64consists of the specified 65.Ar prefix 66and the original name. 67A typical usage of 68.Nm 69is 70.Bd -literal -offset indent 71mkstr pistrings xx *.c 72.Ed 73.Pp 74This command causes all the error messages from the C source 75files in the current directory to be placed in the file 76.Ar pistrings 77and restructured copies of the sources to be placed in 78files whose names are prefixed with 79.Ar \&xx . 80.Pp 81Options: 82.Bl -tag -width indent 83.It Fl 84Error messages are placed at the end of the specified 85message file for recompiling part of a large 86.Nm Ns ed 87program. 88.El 89.Pp 90The 91.Nm 92utility finds error messages in the source by 93searching for the string 94.Li \&`error("' 95in the input stream. 96Each time it occurs, the C string starting at the 97.Sq \&"\& 98is stored 99in the message file followed by a null character and a new-line character; 100The new source is restructured with 101.Xr lseek 2 102pointers into the error message file for retrieval. 103.Bd -literal -offset indent 104char efilname = "/usr/lib/pi_strings"; 105int efil = -1; 106 107error(a1, a2, a3, a4) 108\&{ 109 char buf[256]; 110 111 if (efil < 0) { 112 efil = open(efilname, 0); 113 if (efil < 0) 114 err(1, "%s", efilname); 115 } 116 if (lseek(efil, (off_t)a1, SEEK_SET) < 0 || 117 read(efil, buf, 256) <= 0) 118 err(1, "%s", efilname); 119 printf(buf, a2, a3, a4); 120} 121.Ed 122.Sh SEE ALSO 123.Xr gencat 1 , 124.Xr xstr 1 , 125.Xr lseek 2 126.Sh HISTORY 127A 128.Nm 129utility appeared in 130.Bx 3.0 . 131.Sh BUGS 132The 133.Nm 134utility was intended for the limited architecture of the PDP 11 family. 135Very few programs actually use it. 136The memory savings are negligible in modern computers. 137