Subversion Repositories planix.SVN

/* clog - log console */
#include <u.h>
#include <libc.h>
#include <bio.h>

char *argv0;

int
openlog(char *name)
{
        int fd;

        fd = open(name, OWRITE);
        if(fd < 0)
                fd = create(name, OWRITE, DMAPPEND|0666);
        if(fd < 0){
                fprint(2, "%s: can't open %s: %r\n", argv0, name);
                return -1;
        }
        seek(fd, 0, 2);
        return fd;
}

void
main(int argc, char **argv)
{
        Biobuf in;
        int fd;
        char *p, *t;
        char buf[Bsize];

        argv0 = argv[0];
        if(argc < 3){
                fprint(2, "usage: %s console logfile \n", argv0);
                exits("usage");
        }

        fd = open(argv[1], OREAD);
        if(fd < 0){
                fprint(2, "%s: can't open %s: %r\n", argv0, argv[1]);
                exits("open");
        }
        Binit(&in, fd, OREAD);

        fd = openlog(argv[2]);

        for(;;){
                if(p = Brdline(&in, '\n')){
                        p[Blinelen(&in)-1] = 0;
                        t = ctime(time(0));
                        t[19] = 0;
                        while(fprint(fd, "%s: %s\n", t, p) < 0) {
                                close(fd);
                                sleep(500);
                                fd = openlog(argv[2]);
                        }
                } else if(Blinelen(&in) == 0)   /* true eof or error */
                        break;
                /* discard partial buffer? perhaps due to very long line */
                else if (Bread(&in, buf, sizeof buf) < 0)
                        break;
        }
        exits(0);
}