Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

mkstr(1) [osf1 man page]

mkstr(1)						      General Commands Manual							  mkstr(1)

NAME
mkstr - Creates an error message file SYNOPSIS
mkstr [-] message_file prefix file... The mkstr command is used to create files of error messages that can be removed from a single C source file, or from multiple source files. OPTIONS
Causes messages to be appended to the specified message file, instead of creating a new file. DESCRIPTION
The use of mkstr can reduce the size of programs that contain many error diagnostics and reduce system overhead in running such programs. The mkstr command processes each of the specified files, placing an altered version of the input file in a file whose name consists of the specified prefix and the original name. 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 and is followed by a null character and a newline character. The null character terminates the message so it can be easily used when retrieved; the newline character makes it possible to catalog the error message file neatly to see its contents. The altered copy of the input file then contains a lseek() pointer into the file that can be used to retrieve the message to its appropri- ate source file, as shown in the following example of a program that mkstr produces. char efilname[] = "/usr/lib/pi_strings"; int efil = -1; error(int a1, int a2, int a3, int 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)) == (long)-1 ) || read(efil, buf, 256) <= 0) goto oops; printf(buf, a2, a3, a4); } EXAMPLES
To put the error messages from the current directory C source files into a file called pi_strings, and to put processed copies of the source for these files into filenames prefixed by xx, enter: mkstr pi_strings xx *.c To append the error messages from an additional source file to pi_strings, enter: mkstr - pi_strings xx newfile.c SEE ALSO
Commands: xstr(1) Functions: lseek(2) mkstr(1)

Check Out this Related Man Page

xstr(1) 						      General Commands Manual							   xstr(1)

NAME
xstr - extract strings from C programs to implement shared strings SYNOPSIS
[file] DESCRIPTION
maintains a file into which strings in component parts of a large program are hashed. These strings are replaced with references to this common area. This serves to implement shared constant strings, which are most useful if they are also read-only. The command: extracts the strings from the C source in name, replacing string references with expressions of the form for some number. An appropriate declaration of is placed at the beginning of the file. The resulting C text is placed in the file for subsequent compiling. The strings from this file are placed in the database if they are not there already. Repeated strings and strings that are suffixes of existing strings do not cause changes to the data base. After all components of a large program have been compiled, a file declaring the common space, can be created by the command: This file should then be compiled and loaded with the rest of the program. If possible, the array can be made read-only (shared), saving space and swap overhead. can also be used on a single file. A command: creates files and as before, without using or affecting any file in the same directory. It may be useful to run after the C preprocessor if any macro definitions yield strings or if there is conditional code containing strings that are not, in fact, needed. reads from its standard input when the argument is given. An appropriate command sequence for running after the C preprocessor is: does not touch the file unless new items are added, thus can avoid remaking unless truly necessary (see make(1)). WARNINGS
If a string is a suffix of another string in the data base, but the shorter string is seen first by both strings are placed in the data base, when placing only the longer one there would be sufficient. AUTHOR
was developed by the University of California, Berkeley. FILES
Data base of strings Massaged C source C source for definition of array Temp file when `xstr name' does not touch SEE ALSO
mkstr(1). xstr(1)
Man Page