Tweak and add bash scripts

bin/cheat

@@ -0,0 +1,178 @@
+#!/bin/bash
+# Original Author: Alexander Epstein https://github.com/alexanderepstein
+
+currentVersion="1.10.0"
+configuredClient=""
+search="0"
+insensitive=""
+recursive=""
+boundry=""
+
+## This function determines which http get tool the system has installed and returns an error if there isnt one
+getConfiguredClient()
+{
+  if  command -v curl &>/dev/null ; then
+    configuredClient="curl"
+  elif command -v wget &>/dev/null ; then
+    configuredClient="wget"
+  elif command -v fetch &>/dev/null ; then
+    configuredClient="fetch"
+  else
+    echo "Error: This tool reqires either curl, wget, or fetch to be installed."
+    return 1
+  fi
+
+}
+
+## Allows to call the users configured client without if statements everywhere
+httpGet()
+{
+  case "$configuredClient" in
+    curl) curl -A curl -s "$@";;
+    wget) wget -qO- "$@";;
+    fetch) fetch -o "...";;
+  esac
+}
+
+
+checkInternet()
+{
+  echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1 # query google with a get request
+  if [ $? -eq 0 ]; then #check if the output is 0, if so no errors have occured and we have connected to google successfully
+    return 0
+  else
+    echo "Error: no active internet connection" >&2 #sent to stderr
+    return 1
+  fi
+}
+
+
+usage()
+{
+  echo "Cheat tool"
+  echo "Usage: cheat [flags] [command] or cheat [flags] [programming language] [subject]"
+  echo "  -s Does a search for last argument rather than looking for exact match"
+  echo "  -i Case insensitive search"
+  echo "  -b Word boundaries in search"
+  echo "  -r Recursive search"
+  echo "  -h Show the help"
+  echo "  -v Get the tool version"
+  echo "Special Pages:"
+  echo "  hello Describes building the hello world program written in the language"
+  echo "  list This lists all cheatsheets related to previous arg if none it lists all cheatsheets"
+  echo "  learn Shows a learn-x-in-minutes language cheat sheet perfect for getting started with the language"
+  echo "  1line A collection of one-liners in this language"
+  echo "  weirdness A collection of examples of weird things in this language"
+}
+
+getCheatSheet()
+{
+  if [[ $# == 1 ]]; then
+    if [[ $search == "1" ]];then
+      link=cheat.sh/~$1
+    else
+      link=cheat.sh/$1
+    fi
+  else
+    link=cheat.sh/$1
+  fi
+
+  if [[ $# == 2 ]];then
+    if [[ $search == "1" ]];then
+      link+=/~$2
+    else
+      link+=/$2
+    fi
+  fi
+
+  if [[ $insensitive != "" || $recursive != "" || $boundry != "" ]];then link+=/$boundry$insensitive$recursive; fi
+
+  httpGet $link
+}
+
+checkSpecialPage()
+{
+  temp=$1
+  if [[ $1 == "list" ]];then
+    temp=":list"
+  elif [[ $1 == "learn" ]];then
+    temp=":list"
+  elif [[ $1 == "styles" ]];then
+    temp=":styles"
+  fi
+  if [[ $2 == "1" ]];then
+    arg1=$temp
+  else
+    arg2=$temp
+  fi
+}
+
+getConfiguredClient || exit 1
+#checkInternet || exit 1
+
+while getopts "ribuvhis" opt; do
+  case $opt in
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      exit 1
+    ;;
+    h)
+      usage
+      exit 0
+    ;;
+    v)
+      echo "Version $currentVersion"
+      exit 0
+    ;;
+    i)
+      insensitive="i"
+      search="1"
+    ;;
+    b)
+      boundry="b"
+      search="1"
+    ;;
+    r)
+      recursive="r"
+      search="1"
+    ;;
+    s)
+      search="1"
+    ;;
+    :)
+      echo "Option -$OPTARG requires an argument." >&2
+      exit 1
+    ;;
+  esac
+done
+
+for arg
+do
+  if [[ $arg != "-r" && $arg != "-s" && $arg != "-b" && $arg != "-i" ]];then
+    if [ -z ${arg1+x} ];then
+      arg1=$arg
+    fi
+    if [ ! -z ${arg1+x} ];then
+      arg2=$arg
+    fi
+  fi
+done
+
+checkSpecialPage $arg1 1
+checkSpecialPage $arg2 2
+
+if [[ $# == 0 ]]; then
+  usage
+  exit 0
+elif [[ $1 == "help" || $1 == ":help" ]];then
+  usage
+  exit 0
+else
+  if [[ $arg1 != $arg2 ]];then
+    getCheatSheet $arg1 $arg2
+  else
+    getCheatSheet $arg1
+  fi
+  exit 0
+
+fi