Content-type: text/html Man page of mkstr

mkstr

Section: User Commands (1)
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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 appropriate 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)


 

Index

NAME
SYNOPSIS
OPTIONS
DESCRIPTION
EXAMPLES
SEE ALSO

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Time: 02:42:47 GMT, October 02, 2010