Convert Revolt TOML themes to JSON for importing

revolt-toml-to-json.sh

#!/usr/bin/env bash
set -euo pipefail

INPUT="${1:-theme.toml}"

# Bash 4+ for associative arrays
declare -A output defaults

# —————————————————————————————————————————————————————————————
# 1. Defaults
# —————————————————————————————————————————————————————————————
defaults=(
  [tooltip]="#000000"
  [status-focus]="#4799F0"
  [font]="Open Sans"
  [monospaceFont]="Fira Code"
)

# —————————————————————————————————————————————————————————————
# 2. Parse TOML
# —————————————————————————————————————————————————————————————
section=""
while IFS= read -r raw; do
  # trim whitespace
  line="${raw#"${raw%%[![:space:]]*}"}"
  line="${line%"${line##*[![:space:]]}"}"
  # skip blanks/comments
  [[ -z "$line" || "${line:0:1}" == "#" ]] && continue

  # section headers
  if [[ "$line" =~ ^\[(.+)\]$ ]]; then
    sec="${BASH_REMATCH[1]}"
    if   [[ "$sec" == "variables" ]];           then section="variables"
    elif [[ "$sec" =~ ^variables\.([^]]+)$ ]]; then section="${BASH_REMATCH[1]}"
    else                                        section=""
    fi
    continue
  fi

  # only process when inside [variables] or its subtables
  [[ -z "$section" ]] && continue

  # key = value
  IFS='=' read -r raw_key raw_val <<< "$line"
  key="${raw_key// /}"                                # strip spaces
  val="${raw_val#"${raw_val%%[![:space:]]*}"}"        # trim leading
  val="${val%"${val##*[![:space:]]}"}"                # trim trailing

  # strip quotes around strings
  if [[ "$val" =~ ^\".*\"$ ]]; then
    val="${val:1:-1}"
  fi

  # uppercase any hex codes
  if [[ "$val" =~ ^\# ]]; then
    val="$(echo "$val" | tr '[:lower:]' '[:upper:]')"
  fi

  # build JSON key
  if [[ "$section" == "variables" ]]; then
    jkey="$key"
  else
    jkey="$section-$key"
  fi

  output["$jkey"]="$val"
done < "$INPUT"

# —————————————————————————————————————————————————————————————
# 3. Emit JSON in the same key-order
# —————————————————————————————————————————————————————————————
order=(
  accent background foreground block message-box mention
  success warning tooltip error hover
  scrollbar-thumb scrollbar-track
  primary-background primary-header
  secondary-background secondary-foreground secondary-header
  tertiary-background tertiary-foreground
  status-online status-away status-focus status-busy status-streaming status-invisible
  light font monospaceFont
)

echo "{"
for idx in "${!order[@]}"; do
  k="${order[idx]}"

  # pick from parsed output or defaults
  if [[ -n "${output[$k]:-}" ]]; then
    v="${output[$k]}"
  elif [[ -n "${defaults[$k]:-}" ]]; then
    v="${defaults[$k]}"
  else
    # skip any key we didn't actually populate
    continue
  fi

  # determine whether to quote
  if [[ "$v" == "true" || "$v" == "false" ]]; then
    printf '  "%s": %s' "$k" "$v"
  else
    # escape any embedded quotes (unlikely in your use-case)
    esc="${v//\"/\\\"}"
    printf '  "%s": "%s"' "$k" "$esc"
  fi

  # comma unless last printed entry
  if (( idx < ${#order[@]}-1 )); then
    echo ","
  else
    echo
  fi
done
echo "}"

Adjust the defaults before running