mirror of https://git.qorg11.net/k9core.git
66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <errno.h>
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#include <string.h>
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int
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tee(int fd)
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{
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if(fd == -1)
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{
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fprintf(stderr,"%s\n",strerror(errno));
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return 1;
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}
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char buf[8192];
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int read_bytes = 0;
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while((read_bytes = read(0,buf,8192)) > 0)
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{
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write(fd,buf,read_bytes);
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if(fd != 1)
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write(1,buf,read_bytes);
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}
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return 0;
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}
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int
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main(int argc, char *argv[])
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{
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int c;
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int append = 0;
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int ignore_signt = 0;
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int fd = 0;
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int FLAGS = O_WRONLY|O_CREAT; /* yeah, it will overwrite the thing if it
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* can't read what's in the file, thanks
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* POSIX! */
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while((c = getopt(argc, argv,"ai")) != -1)
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{
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switch(c)
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{
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case 'a': append = 1; break;
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case 'i': ignore_signt = 1; break;
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}
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}
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if(argc == optind)
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{
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if(ignore_signt)
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signal(SIGINT,SIG_IGN);
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tee(1);
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}
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else
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{
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if(argv[argc-1][0] == '-')
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fd = 1;
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if(append)
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FLAGS = O_RDWR|O_APPEND; /* Remember what I said? */
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fd = open(argv[argc-1],FLAGS);
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if(ignore_signt)
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signal(SIGINT,SIG_IGN);
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if(tee(fd) == 1)
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return -1;
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}
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return 0;
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}
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