LXR toybox/toys/other/count.c

   1/* count.c - Progress indicator from stdin to stdout
   2 *
   3 * Copyright 2002 Rob Landley <rob@landley.net>
   4
   5USE_COUNT(NEWTOY(count, NULL, TOYFLAG_USR|TOYFLAG_BIN))
   6
   7config COUNT
   8  bool "count"
   9  default y
  10  help
  11    usage: count
  12
  13    Copy stdin to stdout, displaying simple progress indicator to stderr.
  14*/
  15
  16#include "toys.h"
  17
  18void count_main(void)
  19{
  20  uint64_t size = 0;
  21  int len;
  22  char buf[32];
  23
  24  for (;;) {
  25    len = xread(0, toybuf, sizeof(toybuf));
  26    if (!len) break;
  27    size += len;
  28    xwrite(1, toybuf, len);
  29    xwrite(2, buf, sprintf(buf, "%"PRIu64" bytes\r", size));
  30  }
  31  xwrite(2, "\n", 1);
  32}
  33