some command line functions for reddit

redditcli.sh

#!/bin/bash -

PROGRAM="${0##*/}"

REDDIT_URL="https://www.reddit.com/"

USAGE="
$PROGRAM -flag parameter

  -h  | --help				show this help and exit
  -t  | --top-post subreddit		show top post in /r/subreddit
  -tb | --top-post-browser subreddit	open top post in browser
  -k  | --karma username		show karma for username
"

_show_karma()
{
	if [ "x$1" = "x" ]; then
		echo "error: no username entered"
		exit 1
	fi

	local reddit_user="user/$1"

	printf "\n%s\n\n" "karma for /${reddit_user}"

	local page=$(lynx -source "$REDDIT_URL${reddit_user}/")

	echo "$page" | grep "page not found" >/dev/null && {
		echo "/u/${reddit_user} not found"
		exit 1
	}

	echo -n "post karma: "
	echo "$page"| grep -io "<span class=\"karma\">*[0-9,]*" | sed 's/.*>//'

	echo -n "comment karma: "
	echo "$page"| grep -io "<span class=\"karma comment-karma\">*[0-9,]*" | sed 's/.*>//'
}

_show_top_post()
{
	if [ "x$1" = "x" ]; then
		echo "error: no subreddit entered"
		exit 1
	fi

	local subreddit="$1"

	local chunk=$(lynx -source "${REDDIT_URL}r/${subreddit}/" | grep -Po 'data-rank=\"1\" \K.*(?= data-rank=\"2\")')

	local top_post=$(echo "$chunk" | grep -o "${REDDIT_URL}r/${subreddit}/comments/\S*")
	top_post="${top_post%%\"}"

	if [ "x$top_post" = "x" ]; then
		echo "error: no results were found"
		exit 1
	fi

	if [ $REQUEST_BROWSER ]; then
		local browser="firefox"
		$browser $top_post
	else
		echo "Top Post for /r/$subreddit"
		printf "\n%s\n\n" "${top_post}"
	fi
}


case "$1" in
	-tb|--top-post-browser)
		REQUEST_BROWSER=1
		shift
		_show_top_post "$1"
		;;
	-t|--top-post)
		shift
		_show_top_post "$1"
		;;
	-k|--karma)
		shift
		_show_karma "$1"
		;;
	-h|--help|*)
		echo "$USAGE"
		exit 0
		;;
esac