xdg-ninja.sh

   1 #!/usr/bin/env sh
   2 # shellcheck disable=SC2016
   3
   4 USE_GLOW=true
   5 if ! command -v glow >/dev/null 2>/dev/null; then
   6     printf "Glow not found, markdown rendering not available.\n"
   7     printf "Output will be raw markdown and might look weird.\n"
   8     printf "Install glow for easier reading & copy-paste.\n"
   9     USE_GLOW=false
  10 fi
  11
  12 unalias -a
  13
  14 HELPSTRING="""\
  15
  16
  17     \e[37;45;1mxdg-ninja\e[0m
  18
  19     \e[1;3mCheck your \$HOME for unwanted files.\e[1;0m
  20
  21     ────────────────────────────────────
  22
  23     \e[3m--help\e[0m              \e[1mThis help menu\e[0m
  24     \e[3m-h\e[0m
  25
  26     \e[3m--no-skip-ok\e[0m        \e[1mDisplay messages for all files checked (verbose)\e[0m
  27     \e[3m-v\e[0m
  28
  29     \e[3m--skip-ok\e[0m           \e[1mDon't display anything for files that do not exist (default)\e[0m
  30
  31 """
  32
  33 SKIP_OK=true
  34 for i in "$@"; do
  35     if [ "$i" = "--help" ] || [ "$i" = "-h" ]; then
  36         printf "%b" "$HELPSTRING"
  37         exit
  38     elif [ "$i" = "--skip-ok" ]; then
  39         SKIP_OK=true
  40     elif [ "$i" = "--no-skip-ok" ]; then
  41         SKIP_OK=false
  42     elif [ "$i" = "-v" ]; then
  43         SKIP_OK=false
  44     fi
  45 done
  46
  47 if [ -z "${XDG_DATA_HOME}" ]; then
  48     printf '\e[1;36m%s\e[1;0m\n' "The \$XDG_DATA_HOME environment variable is not set, make sure to add it to your shell's configuration before setting any of the other environment variables!"
  49     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.local/share\e[1;0m\n'
  50 fi
  51 if [ -z "${XDG_CONFIG_HOME}" ]; then
  52     printf '\e[1;36m%s\e[1;0m\n' "The \$XDG_CONFIG_HOME environment variable is not set, make sure to add it to your shell's configuration before setting any of the other environment variables!"
  53     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.config\e[1;0m\n'
  54 fi
  55 if [ -z "${XDG_STATE_HOME}" ]; then
  56     printf '\e[1;36m%s\e[1;0m\n' "The \$XDG_STATE_HOME environment variable is not set, make sure to add it to your shell's configuration before setting any of the other environment variables!"
  57     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.local/state\e[1;0m\n'
  58 fi
  59 if [ -z "${XDG_CACHE_HOME}" ]; then
  60     printf '\e[1;36m%s\e[1;0m\n' "The \$XDG_CACHE_HOME environment variable is not set, make sure to add it to your shell's configuration before setting any of the other environment variables!"
  61     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.cache\e[1;0m\n'
  62 fi
  63 if [ -z "${XDG_RUNTIME_DIR}" ]; then
  64     printf '\e[1;36m%s\e[1;0m\n' "The \$XDG_RUNTIME_DIR environment variable is not set, make sure to add it to your shell's configuration before setting any of the other environment variables!"
  65     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m/run/user/$UID\e[1;0m\n'
  66 fi
  67
  68 if ! command -v jq >/dev/null 2>/dev/null; then
  69     printf "jq is needed to run this script, but it wasn't found. Please install it to be able to use this script."
  70     exit
  71 fi
  72
  73 printf "\n"
  74
  75 # Function to expand environment variables in string
  76 # https://stackoverflow.com/a/20316582/11110290
  77 apply_shell_expansion() {
  78     data="$1"
  79     delimiter="__apply_shell_expansion_delimiter__"
  80     command=$(printf "cat <<%s\n%s\n%s" "$delimiter" "$data" "$delimiter")
  81     eval "$command"
  82 }
  83
  84 # Returns 0 if the path doesn't lead anywhere
  85 # Return 1 if the path points to a file, 2 if it points to a directory
  86 check_not_exists_file() {
  87     FILE_PATH=$(apply_shell_expansion "$1")
  88     if [ -f "$FILE_PATH" ]; then
  89         return 1
  90     elif [ -d "$FILE_PATH" ]; then
  91         return 2
  92     else
  93         return 0
  94     fi
  95 }
  96
  97 # Function to handle the formatting of output
  98 log() {
  99     MODE="$1"
 100     NAME="$2"
 101     FILENAME="$3"
 102     HELP="$4"
 103
 104     case "$MODE" in
 105
 106     ERR)
 107         printf '[\e[1;31m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 108         ;;
 109
 110     WARN)
 111         printf '[\e[1;33m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 112         ;;
 113
 114     INFO)
 115         printf '[\e[1;36m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 116         ;;
 117
 118     SUCS)
 119         [ "$SKIP_OK" = false ] &&
 120             printf '[\e[1;32m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 121         ;;
 122
 123     HELP)
 124         if $USE_GLOW; then
 125             printf "%s" "$HELP" | glow -
 126         else
 127             printf "%s" "$HELP"
 128         fi
 129         ;;
 130
 131     esac
 132 }
 133
 134 # Checks that the given file does not exist, otherwise outputs help
 135 check_file() {
 136     INPUT="$1"
 137     NAME="$2"
 138
 139     FILENAME=$(printf "%s" "$INPUT" | jq -r .path)
 140     MOVABLE=$(printf "%s" "$INPUT" | jq -r .movable)
 141     HELP=$(printf "%s" "$INPUT" | jq -r .help)
 142
 143     check_not_exists_file "$FILENAME"
 144
 145     case $? in
 146
 147     0)
 148         log SUCS "$NAME" "$FILENAME" "$HELP"
 149         ;;
 150
 151     1 | 2)
 152         if "$MOVABLE"; then
 153             log ERR "$NAME" "$FILENAME" "$HELP"
 154         else
 155             log WARN "$NAME" "$FILENAME" "$HELP"
 156         fi
 157         if [ "$HELP" ]; then
 158             log HELP "$NAME" "$FILENAME" "$HELP"
 159         else
 160             log HELP "$NAME" "$FILENAME" "_No help available._"
 161         fi
 162         ;;
 163
 164     esac
 165 }
 166
 167 # Reads a file from programs/, calls check_file on each file specified for the program
 168 check_program() {
 169     PROGRAM=$1
 170
 171     NAME=$(jq -r .name "$PROGRAM")
 172
 173     while IFS= read -r file; do
 174         check_file "$file" "$NAME"
 175     done <<EOF
 176 $(jq -rc '.files[]' "$PROGRAM")
 177 EOF
 178 }
 179
 180 # Loops over all files in the programs/ directory and calls check_program
 181 enumerate_programs() {
 182     printf "\e[1;3mStarting to check your \e[1;36m\$HOME.\e[1;0m\n"
 183     printf "\n"
 184     for prog_filename in "${0%/*}"/programs/*; do
 185         check_program "$prog_filename"
 186     done
 187     printf "\e[1;3mDone checking your \e[1;36m\$HOME.\e[1;0m\n"
 188     printf "\n"
 189     printf "\e[3mIf you have files in your \e[1;36m\$HOME\e[1;0m that shouldn't be there, but weren't recognised by xdg-ninja, please consider creating a configuration file for it and opening a pull request on github.\e[1;0m\n"
 190     printf "\n"
 191 }
 192
 193 enumerate_programs