xdg-ninja.sh

   1 #!/usr/bin/env sh
   2 # shellcheck disable=SC2016
   3
   4 USE_GLOW=false
   5 USE_BAT=false
   6 if command -v glow >/dev/null 2>/dev/null; then
   7     USE_GLOW=true
   8 elif command -v bat >/dev/null 2>/dev/null; then
   9     USE_BAT=true
  10     printf "Glow not found, markdown rendering will be done by bat.\n"
  11     printf "Install glow for easier reading & copy-paste.\n"
  12 else
  13     printf "Glow or bat not found, markdown rendering not available.\n"
  14     printf "Output will be raw markdown and might look weird.\n"
  15     printf "Install glow for easier reading & copy-paste.\n"
  16 fi
  17
  18 unalias -a
  19
  20 HELPSTRING="""\
  21
  22
  23     \e[37;45;1mxdg-ninja\e[0m
  24
  25     \e[1;3mCheck your \$HOME for unwanted files.\e[1;0m
  26
  27     ────────────────────────────────────
  28
  29     \e[3m--help\e[0m              \e[1mThis help menu\e[0m
  30     \e[3m-h\e[0m
  31
  32     \e[3m--no-skip-ok\e[0m        \e[1mDisplay messages for all files checked (verbose)\e[0m
  33     \e[3m-v\e[0m
  34
  35     \e[3m--skip-ok\e[0m           \e[1mDon't display anything for files that do not exist (default)\e[0m
  36
  37 """
  38
  39 SKIP_OK=true
  40 for i in "$@"; do
  41     if [ "$i" = "--help" ] || [ "$i" = "-h" ]; then
  42         printf "%b" "$HELPSTRING"
  43         exit
  44     elif [ "$i" = "--skip-ok" ]; then
  45         SKIP_OK=true
  46     elif [ "$i" = "--no-skip-ok" ]; then
  47         SKIP_OK=false
  48     elif [ "$i" = "-v" ]; then
  49         SKIP_OK=false
  50     fi
  51 done
  52
  53 if [ -z "${XDG_DATA_HOME}" ]; then
  54     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!"
  55     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.local/share\e[1;0m\n'
  56 fi
  57 if [ -z "${XDG_CONFIG_HOME}" ]; then
  58     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!"
  59     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.config\e[1;0m\n'
  60 fi
  61 if [ -z "${XDG_STATE_HOME}" ]; then
  62     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!"
  63     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.local/state\e[1;0m\n'
  64 fi
  65 if [ -z "${XDG_CACHE_HOME}" ]; then
  66     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!"
  67     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m$HOME/.cache\e[1;0m\n'
  68 fi
  69 if [ -z "${XDG_RUNTIME_DIR}" ]; then
  70     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!"
  71     printf '\e[1;36m    ⤷ \e[1mThe recommended value is: \e[1;3m/run/user/$UID\e[1;0m\n'
  72 fi
  73
  74 if ! command -v jq >/dev/null 2>/dev/null; then
  75     printf "jq is needed to run this script, but it wasn't found. Please install it to be able to use this script."
  76     exit
  77 fi
  78
  79 printf "\n"
  80
  81 # Function to expand environment variables in string
  82 # https://stackoverflow.com/a/20316582/11110290
  83 apply_shell_expansion() {
  84     data="$1"
  85     delimiter="__apply_shell_expansion_delimiter__"
  86     command=$(printf "cat <<%s\n%s\n%s" "$delimiter" "$data" "$delimiter")
  87     eval "$command"
  88 }
  89
  90 # Returns 0 if the path doesn't lead anywhere
  91 # Return 1 if the path points to a file, 2 if it points to a directory
  92 check_not_exists_file() {
  93     FILE_PATH=$(apply_shell_expansion "$1")
  94     if [ -f "$FILE_PATH" ]; then
  95         return 1
  96     elif [ -d "$FILE_PATH" ]; then
  97         return 2
  98     else
  99         return 0
 100     fi
 101 }
 102
 103 # Function to handle the formatting of output
 104 log() {
 105     MODE="$1"
 106     NAME="$2"
 107     FILENAME="$3"
 108     HELP="$4"
 109
 110     case "$MODE" in
 111
 112     ERR)
 113         printf '[\e[1;31m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 114         ;;
 115
 116     WARN)
 117         printf '[\e[1;33m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 118         ;;
 119
 120     INFO)
 121         printf '[\e[1;36m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 122         ;;
 123
 124     SUCS)
 125         [ "$SKIP_OK" = false ] &&
 126             printf '[\e[1;32m%s\e[1;0m]: \e[1;3m%s\e[1;0m\n' "$NAME" "$FILENAME"
 127         ;;
 128
 129     HELP)
 130         if $USE_GLOW; then
 131             printf "%s\n" "$HELP" | glow -
 132         elif $USE_BAT; then
 133             printf "%s\n" "$HELP" | bat -pp -f --language markdown
 134         else
 135             printf "%s\n" "$HELP"
 136         fi
 137         ;;
 138
 139     esac
 140 }
 141
 142 # Checks that the given file does not exist, otherwise outputs help
 143 check_file() {
 144     INPUT="$1"
 145     NAME="$2"
 146
 147     FILENAME=$(printf "%s" "$INPUT" | jq -r .path)
 148     MOVABLE=$(printf "%s" "$INPUT" | jq -r .movable)
 149     HELP=$(printf "%s" "$INPUT" | jq -r .help)
 150
 151     check_not_exists_file "$FILENAME"
 152
 153     case $? in
 154
 155     0)
 156         log SUCS "$NAME" "$FILENAME" "$HELP"
 157         ;;
 158
 159     1 | 2)
 160         if "$MOVABLE"; then
 161             log ERR "$NAME" "$FILENAME" "$HELP"
 162         else
 163             log WARN "$NAME" "$FILENAME" "$HELP"
 164         fi
 165         if [ "$HELP" ]; then
 166             log HELP "$NAME" "$FILENAME" "$HELP"
 167         else
 168             log HELP "$NAME" "$FILENAME" "_No help available._"
 169         fi
 170         ;;
 171
 172     esac
 173 }
 174
 175 # Reads a file from programs/, calls check_file on each file specified for the program
 176 check_program() {
 177     PROGRAM=$1
 178
 179     NAME=$(jq -r .name "$PROGRAM")
 180
 181     while IFS= read -r file; do
 182         check_file "$file" "$NAME"
 183     done <<EOF
 184 $(jq -rc '.files[]' "$PROGRAM")
 185 EOF
 186 }
 187
 188 # Loops over all files in the programs/ directory and calls check_program
 189 enumerate_programs() {
 190     printf "\e[1;3mStarting to check your \e[1;36m\$HOME.\e[1;0m\n"
 191     printf "\n"
 192     for prog_filename in "${0%/*}"/programs/*; do
 193         check_program "$prog_filename"
 194     done
 195     printf "\e[1;3mDone checking your \e[1;36m\$HOME.\e[1;0m\n"
 196     printf "\n"
 197     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"
 198     printf "\n"
 199 }
 200
 201 enumerate_programs