display hints from devhints.io

hints

#!/usr/bin/env bash

type wget >/dev/null 2>&1 || { echo >&2 "I require wget but it's not installed."; exit 1; }
type mdless >/dev/null 2>&1 || { echo >&2 "I require mdless but it's not installed. sudo gem install mdless"; exit 1; }

TOOL=${1:?Usage: $0 <toolname> [--refresh]}
REFRESH=${2:-no}

RAW_MD_URL="https://raw.github.com/hazeorid/devhints.io/gh-pages/${TOOL}.md"

CACHE_DIR=$HOME/.devhints/
LOCAL_CACHE_FILE=$CACHE_DIR/${TOOL}.md

if [ ! -d $CACHE_DIR ]; then
  mkdir -p $CACHE_DIR
fi

if [ "$REFRESH" == "--refresh" ] || [ ! -e $LOCAL_CACHE_FILE ]; then
  wget -q -O - $RAW_MD_URL | sed -e '/^{: /d' > $LOCAL_CACHE_FILE
fi

if [ -s $LOCAL_CACHE_FILE ]; then
  mdless $LOCAL_CACHE_FILE 2>/dev/null
else
  echo No cheat sheet found!
fi