.travis.cache

#!/bin/bash
set -e

##### Constants
VERSION="1.0.0"
if [[ "$OSTYPE" != "darwin"* ]]; then
  BLUE='\033[1;34m'
  PURPLE='\033[1;35m'
  GREEN='\033[1;32m'
  RED='\033[1;31m'
  YELLOW='\033[1;33m'
  NC='\033[0m' # No Color
fi

TAG="${YELLOW}[CACHE_BOT]:${NC} "
##### Constants

##### Variables
cache=~/.cache/apt
load=0
save=0
verbose=0
##### Variables

function usage()
{
    echo -e "${BLUE}Usage: ${YELLOW}[options] ...${NC}"
    echo -e "${GREEN}Options:"
    echo -e "${GREEN}-c, --cache                 ${YELLOW}Cache dir to use; defaults to ~/.cache/apt.${NC}"
    echo -e "${GREEN}-s, --save                  ${YELLOW}Updates the cache using apts cache.${NC}"
    echo -e "${GREEN}-l, --load                  ${YELLOW}Loads the cache.${NC}"
    echo -e "${GREEN}-v, --verbose               ${YELLOW}Detailed messages.${NC}"
}

while [ "$1" != "" ]; do
    case $1 in
        -c | --cache )          shift
                                cache=$1
                                ;;
        -i | --load )           load=1
                                ;;
        -s | --save )           save=1
                                ;;
        -v | --verbose )        verbose=1
                                ;;
        -h | --help )           usage
                                exit
                                ;;
        * )                     usage
                                exit 1
    esac
    shift
done

##### Functions
function debug_print()
{
    if [ "$verbose" = "1" ]; then echo -e ${TAG} "${1^}"; fi
}

function print()
{
     echo -e ${TAG} "${1^}"
}

function exist()
{
    [ -e "$1" ]
}

function cache_count()
{
  file_count=`ls "${cache}"/*.deb | wc -l`
  print "${BLUE}There are "${file_count}" packages cached${NC}"
}

function load_cache
{
  print "${BLUE}Print content of "${cache}" ${NC}"
  cache_count

  if [ "$verbose" = "1" ]; then ls "${cache}"; fi

  debug_print "${BLUE}Checking whether apt-get has no cache${NC}"
  if [ "$verbose" = "1" ]; then ls /var/cache/apt/archives; fi

  if exist "${cache}"/*.deb
  then
      debug_print "${BLUE}Start loading cache${NC}"
      sudo mv "${cache}"/*.deb /var/cache/apt/archives/
      if [ "$verbose" = "1" ]; then ls /var/cache/apt/archives; fi
  else
      print "${GREEN}Cache is empty${NC}"
  fi
}

function save_cache()
{
  print "${BLUE}Updating the cache${NC}"
  if [ "$verbose" = "1" ]; then
      cp -v /var/cache/apt/archives/*deb "${cache}"
  else
      cp  /var/cache/apt/archives/*deb "${cache}"
  fi
}
##### Functions

###################################################################
########################### Main Script ###########################
###################################################################
# 1 if save and load, which one?
if [ "$save" == "0" ] && [ "$load" == "0" ]; then
  print "${GREEN}Do you want me to load or save the cache?${NC}"
  exit 1;
fi

if [ "$save" == "1" ] && [ "$load" == "1" ]; then
  print "${GREEN}Either save or load, not both duh!!${NC}"
  exit 1;
fi

print "${BLUE}Using "${cache}" as cache directory"

# if save run save_cache
if [ "$save" == "1" ]; then
  save_cache
fi;

# if load run load_cache
if [ "$load" == "1" ]; then
  load_cache
fi;
###################################################################
########################### Main Script ###########################
###################################################################

exit 0;