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mkstr(1) [bsd man page]

MKSTR(1)						      General Commands Manual							  MKSTR(1)

NAME
mkstr - create an error message file by massaging C source SYNOPSIS
mkstr [ - ] messagefile prefix file ... DESCRIPTION
Mkstr is used to create files of error messages. Its use can make programs with large numbers of error diagnostics much smaller, and reduce system overhead in running the program as the error messages do not have to be constantly swapped in and out. Mkstr will process each of the specified files, placing a massaged version of the input file in a file whose name consists of the specified prefix and the original name. A typical usage of mkstr would be mkstr pistrings xx *.c This command would cause all the error messages from the C source files in the current directory to be placed in the file pistrings and processed copies of the source for these files to be placed in files whose names are prefixed with xx. To process the error messages in the source to the message file mkstr keys on the string `error("' in the input stream. Each time it occurs, the C string starting at the `"' is placed in the message file followed by a null character and a new-line character; the null character terminates the message so it can be easily used when retrieved, the new-line character makes it possible to sensibly cat the error message file to see its contents. The massaged copy of the input file then contains a lseek pointer into the file which can be used to retrieve the message, i.e.: char efilname[] = "/usr/share/pascal/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); } The optional - causes the error messages to be placed at the end of the specified message file for recompiling part of a large mkstred pro- gram. SEE ALSO
lseek(2), xstr(1) 3rd Berkeley Distribution October 22, 1996 MKSTR(1)

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MKSTR(1)						    BSD General Commands Manual 						  MKSTR(1)

NAME
mkstr -- create an error message file by massaging C source SYNOPSIS
mkstr [-] mesgfile prefix file ... DESCRIPTION
The mkstr utility creates a file containing error messages extracted from C source, and restructures the same C source, to utilize the cre- ated error message file. The intent of mkstr was to reduce the size of large programs and reduce swapping (see BUGS section below). The mkstr utility processes each of the specified files, placing a restructured version of the input in a file whose name consists of the specified prefix and the original name. A typical usage of mkstr is mkstr pistrings xx *.c This command causes all the error messages from the C source files in the current directory to be placed in the file pistrings and restruc- tured copies of the sources to be placed in files whose names are prefixed with ``xx''. Options: - Error messages are placed at the end of the specified message file for recompiling part of a large mkstred program. The mkstr utility finds error messages in the source by searching for the string 'error("' in the input stream. Each time it occurs, the C string starting at the '"' is stored in the message file followed by a null character and a new-line character; The new source is restruc- tured with lseek(2) pointers into the error message file for retrieval. 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) err(1, "%s", efilname); } if (lseek(efil, (off_t)a1, SEEK_SET) < 0 || read(efil, buf, 256) <= 0) err(1, "%s", efilname); printf(buf, a2, a3, a4); } SEE ALSO
gencat(1), xstr(1), lseek(2) HISTORY
An mkstr utility appeared in 3.0BSD. BUGS
The mkstr utility was intended for the limited architecture of the PDP 11 family. Very few programs actually use it. The memory savings are negligible in modern computers. BSD
November 1, 2002 BSD

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