134 lines
4.4 KiB
Bash
Executable File
134 lines
4.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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readonly dependency=("aaron-williamson/base16-alacritty")
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readonly app="alacritty"
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#
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# Alacritty does not support including other files into
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# its configuration yet. As such, this processor needs to
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# change the user's configuration file *itself*.
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#
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# This will generally not be a problem, though it can lead
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# to corrupted configurations in exceptional circumstances
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# (such as every line being preceded by the process control
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# regex, for whatever reason).
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#
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# In general, the processor looks for a specific line in the
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# following format:
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# '# Base16 [theme name] - alacritty color config'
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# from which it will delete everything until it finds a line:
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# '# Base16End [theme name] - alacritty color config'
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# So, if you don't want to lose anything -
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# Do NOT put anything important between those two lines.
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path="$1"
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package="$2"
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theme="$3"
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permanent="$4"
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alacritty_conf="$HOME/.config/alacritty/alacritty.yml"
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include_conf="$HOME/.config/alacritty/colorscheme.yml"
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## Main Entrypoint
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#
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# Finds the right theme template file and starts theme
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# switching and, if necessary, permanent setting processes.
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main() {
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dbg_msg $app "Starting Processor"
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tfile="$path/$package/colors/base16-$theme.yml"
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if ! file_exists "$tfile"; then
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dbg_msg $app "error" "Theme template $theme not found in package $package"
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exit 1
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fi
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if [ ! -f "$alacritty_conf" ]; then
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dbg_msg $app "error" "Alacritty config file not found. Please make sure file exists: $alacritty_conf"
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fi
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if [[ "$permanent" == "true" ]]; then save; fi
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theme
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dbg_msg $app "Processor Done"
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}
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## Theme switcher
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#
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# Makes sure that if any application instance is
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# currently running, it switches to new theme.
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theme() {
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# TODO also do through include file
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dbg_msg $app "Setting up live config reload"
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if grep -qe '^live_config_reload:.*false' "$alacritty_conf"; then
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sed -e 's/^live_config_reload:.*false/^live_config_reload: true/gm'
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dbg_msg $app "Successfully enabled live config reload. Please restart alacritty to enable instant theme switching."
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else
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dbg_msg $app "Live config reload already enabled"
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fi
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dbg_msg $app "Touching alacritty config"
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touch "$alacritty_conf"
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}
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## Theme setter
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#
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# Takes care of permanently writing the desired
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# base16 theme into application settings.
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save() {
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dbg_msg $app "Saving theme"
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# replace colorscheme.yml content with new one
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cp "$tfile" "$include_conf"
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dbg_msg $app "Wrote theme file to $include_conf"
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# find import line in alacritty conf
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if grep -qe '^import:' "$alacritty_conf"; then
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# find first line containing imports (actual - file.yml line)
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local import_first_line
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import_first_line=$(grep -ne '^import:' "$alacritty_conf" | cut -f1 -d:)
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import_first_line=$((import_first_line + 1))
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# find last line containing imports (actual - file.yml line)
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local import_last_line
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import_last_line=$(tail -n+"$import_first_line" "$alacritty_conf" | grep -nve '[[:space:]]*-' | head -n1 | cut -f1 -d:)
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# extract imports
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local imports
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imports=$(tail -n+$import_first_line "$alacritty_conf" | head -n $((import_first_line + import_last_line)))
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if echo "$imports" | grep -qe "$(basename "$include_conf")$"; then
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dbg_msg $app "Already correctly imports theme file"
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return
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else
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dbg_msg $app "Creating config backup file"
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tmpfile="$alacritty_conf.tmp"
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cp "$alacritty_conf" "$tmpfile"
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dbg_msg $app "Including theme file in imports"
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(
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head -n $((import_first_line - 1)) "$tmpfile"
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echo " - ${include_conf#${HOME}/}"
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tail -n +$import_first_line "$tmpfile"
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) >"$alacritty_conf"
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dbg_msg $app "Removing config backup file"
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rm "$tmpfile"
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fi
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# no imports yet, append to end of file
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else
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# we remove the home prefix from the absolute path since alacritty
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# can deal with an inclusion in the form of .config/alacritty/colorscheme.yml
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printf "\nimport:\n - %s\n" "${include_conf#${HOME}/}" >>"$alacritty_conf"
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fi
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}
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# Safe sourcing: https://stackoverflow.com/a/12694189
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DIR="${BASH_SOURCE%/*}"
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if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi
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# shellcheck source=utilities.sh
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. "$DIR/utilities.sh"
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## Dependency Checker
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#
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# Makes sure the processor is called for the correct
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# base16 package, or refuses to run if it is not.
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if printf '%s\n' "${dependency[@]}" | grep -q -P "^$package$"; then
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main
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else
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dbg_msg $app "error" "Processor does not work for package $package"
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fi
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