Pack-A-Progressive

   1 #!/bin/sh
   2 CC=gcc
   3
   4 set -x
   5 set -e
   6
   7 if [ $# != 3 ] ; then
   8         echo Usage: $0 release host /dev/norewindtape
   9         exit 1
  10 fi
  11
  12 release=$1
  13 host=$2
  14 tape=$3
  15
  16 cd ${host}
  17 mt -f ${tape} ret
  18 mt -f ${tape} rew
  19 /bin/tar cf ${tape} Install
  20
  21 cat > /tmp/blockit.c <<'e!o!f'
  22 #include <stdio.h>
  23
  24 #define BLOCKSIZE (1024 * 62)
  25
  26 main() {
  27   long c;
  28   long i = 0;
  29   long j;
  30
  31   setvbuf (stdout, (char *)NULL, _IOFBF, BLOCKSIZE);
  32
  33   while ((c = getchar()) != EOF) {
  34     if (ferror(stdin)) {
  35       perror("on getchar");
  36       return(1);
  37     } /* on error */
  38
  39     putchar(c);
  40
  41     if (ferror(stdout)) {
  42       perror("on putchar");
  43       return(1);
  44     } /* on error */
  45
  46     ++i;
  47   } /* while there is input */
  48
  49   for (j = (BLOCKSIZE - (i % BLOCKSIZE)); j; --j) {
  50     putchar(0);
  51
  52     if (ferror(stdout)) {
  53       perror("on putchar");
  54       return(1);
  55     } /* on error */
  56   } /* pad */
  57
  58   return(0);
  59 }
  60 e!o!f
  61 (cd /tmp; ${CC} -o blockit blockit.c)
  62 /bin/tar cf - ${release} | compress -vV | /tmp/blockit > ${tape}
  63 mt -f ${tape} asf 0
  64 tar tvf ${tape}
  65 dd bs=62k if=${tape} | compress -d | /bin/tar tvvf -
  66 rm -f /tmp/blockit /tmp/blockit.c
  67 mt -f ${tape} rew