media-sucker/scripts/dvd.video.read.sh

#! /bin/sh -e

. $(dirname $0)/common.sh

log "Scanning for DVD title"
title=$(dvdbackup -I | awk -F \" '/DVD with title/ {print $2}')
setenv title "$title"

# How big is this DVD?
totalSize=$(dvdbackup -I | awk '/[MK]iB$/ { b += $2 } END { print b }')

dvdbackup -p -F -n DVD \
| tr '\r' '\n' \
| awk -v total=$totalSize -F '[ /:()]+' '
    function update(bytes) {
      pct = 100 * bytes / total
      if (pct >= nextpct) {
        print pct
        fflush()
        nextpct = pct + 0.5
      }
    }

    /[MK]iB.$/ {
      read = $(NF-3) * 1024
      if ($(NF-1) == "MiB") {
        read *= 1024
      }
      if (read < last) {
        totalRead += last
      }
      update(totalRead + read)
      last = read
    }
    ' \
| while read val; do
  setenv complete "$val" 
done