#!/bin/bash
# 先安装highlight, "brew install highlight"
# Parse arguments
usage() {
    echo "Usage: $0 [-h] [-v] [-f FILE] [-k fontsize] [-s startline] [-e endline]"
    echo "  -h  Help. Display this message and quit."
    echo "  -v  Version. Print version number and quit."
    echo "  -k  Specify font-size."
    echo "  -f  Specify file FILE."
    echo "  -s  Specify the line number of the file that start from ."
    echo "  -e  Specify the line number of the file that end to output ."
    exit
}

optspec="hvf:s:k:e:"
fontsize=24

while getopts "$optspec" optchar
do
  case "${optchar}" in
    h) usage ;;
    v) version ;;
    f) file=${OPTARG} ;;
    k) fontsize=${OPTARG} ;;
    s) startline=${OPTARG} ;;
    e) endline=${OPTARG} ;;
    *) usage ;;
  esac
done

[ -z "$file" ] && usage

# [ -n "$fontsize" ] && fontsize=$fontsize
[ -z "$startline" ] && startline=0
# [ -z "$endline" ] && endline=$lastline
if [ -n "$endline" ]; then
  cat $file | head -n ${endline} | tail -n +${startline} |  highlight -l -O rtf -K ${fontsize} -m ${startline} -S go -  | pbcopy
else
  cat $file | tail -n +${startline} |  highlight -l -O rtf -K ${fontsize} -m ${startline} -S go -  | pbcopy
fi