127 lines
4.6 KiB
Bash
Executable file
127 lines
4.6 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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## 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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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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}
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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 $app "Saving theme"
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# following format:
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# '# Base16 [theme name] - alacritty color config'
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# from which it will delete everything until it finds a line:
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# '# Base16End [theme name] - alacritty color config'
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startline="$(grep -ne '^# Base16 .*- alacritty color config$' "$alacritty_conf" | cut -f1 -d:)"
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endline="$(grep -ne '^# Base16End .*- alacritty color config$' "$alacritty_conf" | cut -f1 -d:)"
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tmpfile="$alacritty_conf.tmp"
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tmptheme="$alacritty_conf.thm.tmp"
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if [[ -n "$startline" && -z "$endline" ]] || [[ -z "$startline" && -n "$endline" ]] || [[ "$startline" -gt "$endline" ]]; then
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dbg_msg $app "error" "Base 16 Pattern not correctly recognized in file: $alacritty_conf. Please make sure pattern begins with # Base 16 and ends with # Base 16end and only exists once in the file. No changes to file made."
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elif [[ -z "$startline" && -z "$endline" ]]; then
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# TODO on first run automatically replace ^colors: line and any subsequent indented lines with commented versions and create colors: *colorscheme programatically
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dbg_msg $app "warn" "No previous Base16 pattern found in file: $alacritty_conf. If this is your first time running the processor, please manually remove any previous colors: settings and replace with 'colors: *colorscheme' instead."
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cat "$alacritty_conf" >"$tmpfile" || exit 1
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else
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# remove old lines of any base16 theme
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sed -e "$startline,$endline d" "$alacritty_conf" >"$tmpfile" || exit 1
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fi
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# make sure we're not adding this line twice
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sed -e 's/^draw_bold_text_with_bright_colors:/# draw_bold_text_with_bright_colors:/' "$tmpfile" >"$tmpfile.tmp"
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mv "$tmpfile.tmp" "$tmpfile"
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# fix template theme name key for easier inclusion
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sed -e "s/^colors:/$theme: \&colorscheme/" "$tfile" >"$tmptheme" || exit 1
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echo "# Base16End $theme - alacritty color config" >>"$tmptheme"
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# combine both into final config file
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# replace original file with new colorscheme-added version
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cat "$tmptheme" "$tmpfile" >"$alacritty_conf"
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rm "$tmptheme" "$tmpfile"
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dbg_msg $app "Saved theme to $alacritty_conf"
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}
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# Safe sourcing: https://stackoverflow.com/a/12694189
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DIR="${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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