suksit dot com

#!/bin/bash
#
# usage: onemanga [-dlu] [-c <first chapter>[+|-<last chapter>]] <manga name> [<manga name> ...]
#
 
trap 'rm -f *.jpg tmp_*;' 0
 
base_url="http://www.onemanga.com"
base_dir=`pwd`
 
function calc() {
  echo "scale=2; $*" | bc -q 2>/dev/null | cut -f1 -d.
}
 
function progressbar() {
  width=30
  current=$1
  total=$2
 
  percent=`calc "$current / $total * 100"`
  stack=`calc "$current / $total * $width"`
  stack=${stack:=0}
  space=`calc "$width - $stack"`
 
  for i in `seq 1 $((3 - ${#percent}))`; do
    echo -n " "
  done
 
  echo -n "$percent% ["
 
  for i in `seq 1 $stack`; do
    echo -n "#"
  done
 
  for i in `seq 1 $space`; do
    echo -n " "
  done
 
  echo "]"
}
 
while getopts ":c:dlu" op; do
  case $op in
    c)
      if [[ $LATEST -eq 1 ]]; then
        echo "Invalid option: -c cannot be used with -l" >&2
        exit
      fi
 
      if [[ $UPDATE -eq 1 ]]; then
        echo "Invalid option: -c cannot be used with -u" >&2
        exit
      fi
 
      CHAPTER=1
      CHAPTER_ARG=$OPTARG
      ;;
    d)
      USE_DIR=1
      ;;
    l)
      if [[ $CHAPTER -eq 1 ]]; then
        echo "Invalid option: -l cannot be used with -c" >&2
        exit
      fi
 
      if [[ $UPDATE -eq 1 ]]; then
        echo "Invalid option: -l cannot be used with -u" >&2
        exit
      fi
 
      LATEST=1
      ;;
    u)
      if [[ $CHAPTER -eq 1 ]]; then
        echo "Invalid option: -u cannot be used with -c" >&2
        exit
      fi
 
      if [[ $LATEST -eq 1 ]]; then
        echo "Invalid option: -u cannot be used with -l" >&2
        exit
      fi
 
      UPDATE=1
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      exit
      ;;
  esac
done
 
shift $(($OPTIND - 1))
 
if [[ $CHAPTER = "" && $LATEST = "" ]]; then
  UPDATE=1
fi
 
if [[ $CHAPTER -eq 1 ]]; then
  if [[ `expr index "$CHAPTER_ARG" ++` -gt 0 ]]; then
    first_chapter=${CHAPTER_ARG%+*}
    last_chapter="+"
  elif [[ `expr index "$CHAPTER_ARG" -` -gt 0 ]]; then
    first_chapter=${CHAPTER_ARG%-*}
    last_chapter=${CHAPTER_ARG#*-}
  else
    first_chapter=$CHAPTER_ARG
    last_chapter=$CHAPTER_ARG
  fi
fi
 
for manga_name in "$@"; do
  if [[ $USE_DIR -eq 1 ]]; then
    mkdir -p $base_dir/$manga_name
    cd $base_dir/$manga_name
  fi
 
  display_name=`echo $manga_name | sed "s/_/ /g"`
  word_count=`echo $display_name | wc -w`
  sort_key=$((word_count + 1))
  local_chapter=`ls ${manga_name}_*.cbr 2> /dev/null | sort -r -n -k $sort_key -t_ | head -n1`
  local_chapter=`basename ${local_chapter##*_} .cbr`
 
  echo -n "opening $base_url/$manga_name..."
  curl -s $base_url/$manga_name/ > tmp_home
  grep "ch-subject" tmp_home | grep "a href" | cut -f3 -d\/ > tmp_chapters
 
  if [[ ! -s tmp_chapters ]]; then
    echo -e "\b\b\b [ERROR]\ncannot create chapter list from $base_url/$manga_name"
    exit
  fi
 
  echo -e "\b\b\b [OK]"
 
  latest_chapter=`head -1 tmp_chapters`
 
  if [[ $LATEST -eq 1 || $UPDATE -eq 1 ]]; then
    echo "local chapter: $local_chapter / latest chapter: $latest_chapter"
 
    if [[ $local_chapter == $latest_chapter ]]; then
      echo "you already have the latest chapter of $display_name"
      continue
    fi
  fi
 
  if [[ $LATEST -eq 1 ]]; then
    first_chapter=$latest_chapter
    last_chapter=$latest_chapter
  fi
 
  if [[ "$last_chapter" == "+" ]]; then
    echo "starting chapter: $first_chapter / latest chapter: $latest_chapter"
    last_chapter=$latest_chapter
  fi
 
  if [[ $UPDATE -eq 1 ]]; then
    if [[ $local_chapter == "" ]]; then
      first_chapter=`sort -n tmp_chapters | head -n1`
    else
      index=`sort -n tmp_chapters | grep -nm1 $local_chapter | cut -f1 -d:`
      first_chapter=`sort -n tmp_chapters | tail -n+$((index + 1)) | head -n1`
    fi
 
    last_chapter=$latest_chapter
  fi
 
  index=`sort -n tmp_chapters | grep -nm1 $first_chapter | cut -f1 -d:`
  last_index=`sort -n tmp_chapters | grep -nm1 $last_chapter | cut -f1 -d:`
 
  CHAPTERS=`sort -n tmp_chapters | awk 'FNR >= '$index' && FNR <= '$last_index`
 
  for chapter in $CHAPTERS; do
    echo "downloading $display_name chapter $chapter"
    page_location=`curl -s --range -1500 $base_url/$manga_name/$chapter/ | grep -i "begin reading" | cut -f2 -d\"`
    curl -s $base_url$page_location > tmp_page
    PAGES=`grep -i "option value" tmp_page | grep -i -v "select manga series" | cut -f2 -d\"`
    image_location=`grep -i "manga-page" tmp_page | cut -f4 -d\"`
    image_location=${image_location%/*.jpg}
 
    total=`echo $PAGES | wc -w`
    i=0
 
    for page in $PAGES; do
      let i++
      echo -ne "\r\e[0K`progressbar $i $total` ($i/$total)"
      wget -q "$image_location/$page.jpg"
    done
 
    cbr_file_name="${manga_name}_${chapter}.cbr"
 
    echo -ne "\r\e[0K`progressbar $i $total` (packing files...)"
    zip -q $cbr_file_name *.jpg && rm -f *.jpg
    echo -e "\r\e[0K`progressbar $i $total` ($cbr_file_name)"
  done
done