package com.textparser.cli;

import com.textparser.TextParser;

import com.textparser.TokenItem;

import java.io.InputStream;

import java.nio.charset.StandardCharsets;

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.List;

public class Parse {

private static void printUsage() {

System.out.println("Usage: Parse <definition_file> [<text_file> --format] | [--stdinformat]");

System.exit(1);

}

public static void main(String[] args) {

if (args.length < 2) {

printUsage();

}

try {

TextParser parser = TextParser.fromFile(args[0]);

if (args.length == 2 && "--stdinformat".equals(args[1])) {

byte[] bytes = System.in.readAllBytes();

String text = new String(bytes, StandardCharsets.ISO_8859_1);

byte[] formatted = parser.parseFormat(text);

System.out.println(bytesToHex(formatted));

} else if (args.length == 2) {

byte[] bytes = Files.readAllBytes(Path.of(args[1]));

String text = new String(bytes, StandardCharsets.ISO_8859_1);

List<TokenItem> tokens = parser.parse(text);

System.out.println(toJsonArray(tokens, 0));

} else if (args.length == 3 && "--format".equals(args[2])) {

byte[] bytes = Files.readAllBytes(Path.of(args[1]));

String text = new String(bytes, StandardCharsets.ISO_8859_1);

byte[] formatted = parser.parseFormat(text);

System.out.println(bytesToHex(formatted));

} else {

printUsage();

}

} catch (Exception e) {

System.err.println("Error: " + e.getMessage());

e.printStackTrace();

System.exit(1);

}

}

public static String bytesToHex(byte[] bytes) {

StringBuilder sb = new StringBuilder();

for (byte b : bytes) {

sb.append(String.format("%02x", b & 0xff));

}

return sb.toString();

}

public static String toJsonArray(List<TokenItem> tokens, int indentLevel) {

StringBuilder sb = new StringBuilder();

String indent = " ".repeat(indentLevel);

sb.append("[\n");

for (int i = 0; i < tokens.size(); i++) {

sb.append(tokens.get(i).toJson(indentLevel + 1));

if (i < tokens.size() - 1) {

sb.append(",");

}

sb.append("\n");

}

sb.append(indent).append("]");

return sb.toString();

}

}