tests/stdin_to_file.c

   1 #include "../lib/include/stringptr.h"
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5 #include <fcntl.h>
   6 #include <sys/stat.h>
   7
   8 int syntax() {
   9         puts("prog name_of_file");
  10         puts("writes stdin to supplied filename, in the fashion of the > shell operator.");
  11         return 1;
  12 }
  13
  14 int main(int argc, char** argv) {
  15         stringptr line;
  16         char buf[128 * 1024];
  17
  18         if(argc != 2) return syntax();
  19
  20         int fd = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
  21         if(fd == -1) {
  22                 perror("file access");
  23                 return 1;
  24         }
  25
  26         while(line = read_stdin_line(buf, sizeof(buf), 0), line.ptr) {
  27                 write(fd, line.ptr, line.size);
  28         }
  29         close(fd);
  30         return 0;
  31 }