mkstr 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 restructured copies of the sources to be placed in files whose names are prefixed with xx.
Options:
mkstr
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 restructured 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) {
oops:
perror(efilname);
exit 1 ;
}
}
if (lseek(efil, a1, 0) < 0 || read(efil, buf, 256) 0)
goto oops;
printf(buf, a2, a3, a4);
}