.\" Copyright (c) 1980, 1990 The Regents of the University of California. .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms are permitted provided .\" that: (1) source distributions retain this entire copyright notice and .\" comment, and (2) distributions including binaries display the following .\" acknowledgement: ``This product includes software developed by the .\" University of California, Berkeley and its contributors'' in the .\" documentation or other materials provided with the distribution and in .\" all advertising materials mentioning features or use of this software. .\" Neither the name of the University nor the names of its contributors may .\" be used to endorse or promote products derived from this software without .\" specific prior written permission. .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. .\" .\" @(#)mkstr.1 6.4 (Berkeley) 7/24/90 .\" .Dd July 24, 1990 .Dt MKSTR 1 .Sh NAME .Nm mkstr .Nd create an error message file by massaging C source .Sh SYNOPSIS .Nm mkstr .Op Fl .Ar messagefile .Ar prefix file ... .Sh DESCRIPTION .Nm Mkstr creates files containing error messages extracted from C source, and restructures the same C source, to utilize the created error message file. The intent of .Nm mkstr was to reduce the size of large programs and reduce swapping (see BUGS section below). .Pp .Nm Mkstr processes each of the specified .Ar files , placing a restructured version of the input in a file whose name consists of the specified .Ar prefix and the original name. A typical usage of .Nm mkstr is .Pp .Dl mkstr pistrings xx *.c .Pp This command causes all the error messages from the C source files in the current directory to be placed in the file .Ar pistrings and restructured copies of the sources to be placed in files whose names are prefixed with .Ar xx . .Pp Options: .Tw Ds .Tp Fl Error messages are placed at the end of the specified message file for recompiling part of a large .Nm mkstr ed program. .Tp .Pp .Nm mkstr finds error messages in the source by searching for the string .Li \&`error("' in the input stream. Each time it occurs, the C string starting at the .Sq \&"\& is stored in the message file followed by a null character and a new-line character; The new source is restructured with .Xr lseek 2 pointers into the error message file for retrieval. .Ds I char efilname = "/usr/lib/pi_strings"; int efil = -1; error(a1, a2, a3, a4) \&{ char buf[256]; if (efil < 0) { efil = open(efilname, 0); if (efil < 0) { oops: perror(efilname); exit 1 ; } } if (lseek(efil, (long) a1, 0) \ read(efil, buf, 256) <= 0) goto oops; printf(buf, a2, a3, a4); } .De .Sh SEE ALSO .Xr lseek 2 , .Xr xstr 1 .Sh HISTORY .Nm Mkstr appeared in 3 BSD. .Sh BUGS .Nm mkstr was intended for the limited architecture of the PDP 11 family. Very few programs in 4.4 BSD actually use it. The pascal interpreter, .Xr pi 1 and the editor, .Xr ex 1 are two programs that are built this way. It is not an efficient method, the error messages should be stored in the program text.