Embeds a binary data from file into a Swift class static variable (with cached decode)

embed-binary.sh

#!/bin/bash
# Embeds a binary data from file as a static variable (with cached decode)
# Made by chatgpt: https://chat.openai.com/share/0d05b3a8-d25c-4226-876a-62868d3c0e88

# Check if a valid number of arguments are provided (must be multiple of 2)
if [ $(($# % 2)) -ne 0 ] || [ "$#" -eq 0 ]; then
	echo "Usage: $0 <property_name1> <binary_file1> [<property_name2> <binary_file2> ...]"
	exit 1
fi

# Initialize the Swift code for the class
swift_code="import Foundation\n\npublic class EmbeddedResource {\n    private static var cachedData: [String: Data] = [:]\n"

# Loop through the tuples to add each property
while [ "$#" -gt 0 ]; do
	property_name="$1"
	binary_file="$2"

	# Check if the file exists
	if [ ! -f "$binary_file" ]; then
		echo "File $binary_file not found!"
		exit 1
	fi

	# Convert the binary file to Base64
	base64_string=$(base64 -i "$binary_file" | tr -d '\n')

	# Split the Base64 string into multiple lines
	split_base64_string=$(echo "$base64_string" | sed -r 's/(.{64})/\1\\n/g')

	# Add to the Swift code
	swift_code+="\n    public static var $property_name: Data {\n        if let cached = cachedData[\"$property_name\"] {"
	swift_code+="\n            return cached\n        }\n\n        let base64String = \"\"\"\n$split_base64_string\n\"\"\""
	swift_code+="\n        guard let data = Data(base64Encoded: base64String, options: [.ignoreUnknownCharacters]) else {\n            fatalError(\"Failed to decode embedded resource: $property_name.\")"
	swift_code+="\n        }\n\n        cachedData[\"$property_name\"] = data\n        return data\n    }\n"

	# Log
	echo "Embedded $property_name from $binary_file."

	# Remove processed arguments
	shift 2
done

# Close the class definition
swift_code+="\n}"

# Generate the Swift file
echo -e "$swift_code" >GeneratedResource.swift

echo "Swift file GeneratedResource.swift has been generated."