#!/bin/sh

while [ -n "$1" ]; do
  out="$(dirname "$1")/$(basename "$1" .ass).xml"
  awk -F',' '
  BEGIN {
    ret = 1
    srand()
    print "<?xml version="1.0"?>\n" \
          "<!-- <!DOCTYPE Chapters SYSTEM \"matroskachapters.dtd\"> -->\n" \
          "<Chapters>\n" \
          "  <EditionEntry>\n" \
          "    <EditionUID>42</EditionUID>\n" \
          "    <EditionFlagHidden>0</EditionFlagHidden>\n" \
          "    <EditionFlagDefault>0</EditionFlagDefault>\n" \
          "    <EditionFlagOrdered>0</EditionFlagOrdered>"
  }
  /^Comment:/ {
  if($5 == "chapter") {
    ret = 0
    print "    <ChapterAtom>\n" \
          "      <ChapterTimeStart>" $2 "</ChapterTimeStart>\n" \
          "      <ChapterUID>" int(rand()*(2^32)) "</ChapterUID>\n" \
          "      <ChapterDisplay>\n" \
          "        <ChapterString>" $10 "</ChapterString>\n" \
          "        <ChapterLanguage>eng</ChapterLanguage>\n" \
          "      </ChapterDisplay>\n" \
          "    </ChapterAtom>"
    }
  }
  END {
    print "  </EditionEntry>\n</Chapters>"
    exit ret
  }' "$1" > "$out" || rm "$out"
  shift
done