prog-intro/java/md2html/Md2Html.java

package md2html;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import markup.*;

public class Md2Html {

    public static void main(String[] args) {
        String text = readFile(args[0]);
        BlockCreator creator = new BlockCreator(text);
        List<String> blocks = creator.divideByBlocks();

        try (
            BufferedWriter writer = new BufferedWriter(
                new OutputStreamWriter(
                    new FileOutputStream(args[1]),
                    StandardCharsets.UTF_8
                )
            )
        ) {
            for (int i = 0; i < blocks.size(); i++) {
                PrimePartCreator creatorPrime = new PrimePartCreator(
                    blocks.get(i)
                );
                PrimePart part = creatorPrime.createPart();
                StringBuilder sb = new StringBuilder();
                part.toHtml(sb);
                writer.write(sb.toString());
                if (i < blocks.size() - 1) {
                    writer.write(System.lineSeparator());
                }
                sb.setLength(0); // освобождаем память
            }
        } catch (IOException e) {
            System.out.println("IOException: " + e.getMessage());
        }
    }

    public static String readFile(String nameOfFile) {
        try (
            BufferedReader reader = new BufferedReader(
                new InputStreamReader(
                    new FileInputStream(nameOfFile),
                    StandardCharsets.UTF_8
                )
            )
        ) {
            StringBuilder text = new StringBuilder();
            int read = reader.read();
            while (read != -1) {
                text.append((char) read);
                read = reader.read();
            }
            return text.toString();
        } catch (FileNotFoundException e) {
            System.out.println("Input file not found: " + e.getMessage());
        } catch (IOException e) {
            System.out.println("IOException file not found: " + e.getMessage());
        }
        return null;
    }

    public static void writeToFile(String nameOfFile, String text) {
        try (
            BufferedWriter writer = new BufferedWriter(
                new OutputStreamWriter(
                    new FileOutputStream(nameOfFile),
                    StandardCharsets.UTF_8
                )
            )
        ) {
            writer.write(text);
        } catch (FileNotFoundException e) {
            System.out.println("Output file not found: " + e.getMessage());
        } catch (IOException e) {
            System.out.println("IOException file not found: " + e.getMessage());
        }
    }
}