initial commit

replace_params.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+
+set -e
+
+if [[ $# -lt 2 ]]; then
+    echo "Usage: $0 <params.ini> <template> [--output <output_file>]"
+    exit 1
+fi
+
+PARAMS_FILE="$1"
+TEMPLATE_FILE="$2"
+OUTPUT_FILE="${TEMPLATE_FILE}.out"
+
+# Optional --output <filename>
+if [[ "$3" == "--output" && -n "$4" ]]; then
+    OUTPUT_FILE="$4"
+fi
+
+declare -A PARAMS
+
+# Load params.ini (ignore [section] headers)
+while IFS='=' read -r key value; do
+    # Trim whitespace and ignore comments/sections
+    key="${key%%\#*}"   # remove inline comments
+    value="${value%%\#*}"
+    key="$(echo "$key" | xargs)"     # trim leading/trailing whitespace
+    value="$(echo "$value" | xargs)"
+    [[ -z "$key" || "$key" =~ ^\[.*\]$ ]] && continue
+
+    key_upper=$(echo "$key" | tr '[:lower:]' '[:upper:]')
+    PARAMS["$key_upper"]="$value"
+done < "$PARAMS_FILE"
+
+# Read template into a variable
+template=$(<"$TEMPLATE_FILE")
+
+# Replace placeholders (only when surrounded by spaces)
+for key in "${!PARAMS[@]}"; do
+    val="${PARAMS[$key]}"
+    # Use sed to do space-surrounded substitution
+    template=$(echo "$template" | sed -E "s/([[:space:]])$key([[:space:]])/$val/g")
+done
+
+# Save to output file
+echo "$template" > "$OUTPUT_FILE"
+echo "Wrote output to $OUTPUT_FILE"
+