JavaGuide/TranslateRepo.java at main · UserXSX/JavaGuide · GitHub

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import java.io.*;

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLEncoder;

import java.nio.charset.StandardCharsets;

import java.nio.file.*;

import java.util.*;

import java.util.stream.Collectors;

import com.google.gson.*;

/**

* Repository Documentation Translation Tool

* Translates all markdown files in docs/ folder to target language.

* Preserves directory structure and saves to docs_{lang}/ folder.

* Usage: java TranslateRepo

public class TranslateRepo {

private static final int CHUNK_SIZE = 4000;

private static final String PROGRESS_FILE = ".translation_progress.json";

private static final Map<String, Language> LANGUAGES = new LinkedHashMap<>();

static {

LANGUAGES.put("1", new Language("English", "en", "en"));

LANGUAGES.put("2", new Language("Chinese (Simplified)", "zh-CN", "zh"));

LANGUAGES.put("3", new Language("Spanish", "es", "es"));

LANGUAGES.put("4", new Language("French", "fr", "fr"));

LANGUAGES.put("5", new Language("Portuguese", "pt", "pt"));

LANGUAGES.put("6", new Language("German", "de", "de"));

LANGUAGES.put("7", new Language("Japanese", "ja", "ja"));

LANGUAGES.put("8", new Language("Korean", "ko", "ko"));

LANGUAGES.put("9", new Language("Russian", "ru", "ru"));

LANGUAGES.put("10", new Language("Italian", "it", "it"));

LANGUAGES.put("11", new Language("Arabic", "ar", "ar"));

LANGUAGES.put("12", new Language("Hindi", "hi", "hi"));

LANGUAGES.put("13", new Language("Turkish", "tr", "tr"));

LANGUAGES.put("14", new Language("Vietnamese", "vi", "vi"));

LANGUAGES.put("15", new Language("Polish", "pl", "pl"));

LANGUAGES.put("16", new Language("Dutch", "nl", "nl"));

LANGUAGES.put("17", new Language("Indonesian", "id", "id"));

LANGUAGES.put("18", new Language("Thai", "th", "th"));

LANGUAGES.put("19", new Language("Swedish", "sv", "sv"));

LANGUAGES.put("20", new Language("Greek", "el", "el"));

}

static class Language {

String name;

String code;

String suffix;

Language(String name, String code, String suffix) {

this.name = name;

this.code = code;

this.suffix = suffix;

}

static class TranslationProgress {

Set<String> completed = new HashSet<>();

Set<String> failed = new HashSet<>();

}

public static void main(String[] args) {

try {

printHeader();

// Get repository path

Scanner scanner = new Scanner(System.in);

System.out.print("Enter repository path (default: current directory): ");

String repoPathStr = scanner.nextLine().trim();

if (repoPathStr.isEmpty()) {

repoPathStr = ".";

}

Path repoPath = Paths.get(repoPathStr).toAbsolutePath();

if (!Files.exists(repoPath)) {

System.out.println("❌ Repository path does not exist: " + repoPath);

return;

}

System.out.println("📁 Repository: " + repoPath);

System.out.println();

// Select language

Language language = selectLanguage(scanner);

System.out.println("\n✨ Selected: " + language.name);

System.out.println();

// Find markdown files

System.out.println("🔍 Finding markdown files...");

List<Path> mdFiles = findMarkdownFiles(repoPath);

if (mdFiles.isEmpty()) {

System.out.println("❌ No markdown files found in docs/ folder or README.md");

return;

}

System.out.println("📄 Found " + mdFiles.size() + " markdown files");

System.out.println();

// Load progress

TranslationProgress progress = loadProgress(repoPath);

// Filter files

List<Path> filesToTranslate = new ArrayList<>();

for (Path file : mdFiles) {

Path outputPath = getOutputPath(file, repoPath, language.suffix);

if (Files.exists(outputPath)) {

System.out.println("⏭️ Skipping (exists): " + repoPath.relativize(file));

} else if (progress.completed.contains(file.toString())) {

System.out.println("⏭️ Skipping (completed): " + repoPath.relativize(file));

} else {

filesToTranslate.add(file);

}

if (filesToTranslate.isEmpty()) {

System.out.println("\n✅ All files already translated!");

return;

}

System.out.println("\n📝 Files to translate: " + filesToTranslate.size());

System.out.println();

// Confirm

System.out.print("Translate " + filesToTranslate.size() + " files to " + language.name + "? (y/n): ");

String confirm = scanner.nextLine().trim().toLowerCase();

if (!confirm.equals("y")) {

System.out.println("❌ Translation cancelled");

return;

}

System.out.println();

System.out.println("=".repeat(70));

System.out.println("Translating to " + language.name + "...");

System.out.println("=".repeat(70));

System.out.println();

// Translate files

int totalInputChars = 0;

int totalOutputChars = 0;

List<String> failedFiles = new ArrayList<>();

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

Path inputPath = filesToTranslate.get(i);

Path relativePath = repoPath.relativize(inputPath);

Path outputPath = getOutputPath(inputPath, repoPath, language.suffix);

System.out.println("[" + (i + 1) + "/" + filesToTranslate.size() + "] " + relativePath);

System.out.println(" → " + repoPath.relativize(outputPath));

try {

int[] chars = translateFile(inputPath, outputPath, language.code);

totalInputChars += chars[0];

totalOutputChars += chars[1];

progress.completed.add(inputPath.toString());

saveProgress(repoPath, progress);

System.out.println(" ✅ Translated (" + chars[0] + " → " + chars[1] + " chars)");

System.out.println();

} catch (Exception e) {

System.out.println(" ❌ Failed: " + e.getMessage());

failedFiles.add(relativePath.toString());

progress.failed.add(inputPath.toString());

saveProgress(repoPath, progress);

System.out.println();

}

// Summary

System.out.println("=".repeat(70));

System.out.println("Translation Complete!");

System.out.println("=".repeat(70));

System.out.println("✅ Translated: " + (filesToTranslate.size() - failedFiles.size()) + " files");

System.out.println("📊 Input: " + String.format("%,d", totalInputChars) + " characters");

System.out.println("📊 Output: " + String.format("%,d", totalOutputChars) + " characters");

if (!failedFiles.isEmpty()) {

System.out.println("\n❌ Failed: " + failedFiles.size() + " files");

for (String file : failedFiles) {

System.out.println(" - " + file);

}

System.out.println("\n📁 Output directory: docs_" + language.suffix + "/");

System.out.println("📁 README: README." + language.suffix + ".md");

System.out.println();

System.out.println("💡 Next steps:");

System.out.println(" 1. Review translated files in docs_" + language.suffix + "/");

System.out.println(" 2. git add docs_" + language.suffix + "/ README." + language.suffix + ".md");

System.out.println(" 3. git commit -m 'Add " + language.name + " translation'");

System.out.println(" 4. Create PR");

} catch (Exception e) {

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

e.printStackTrace();

}

private static void printHeader() {

System.out.println("=".repeat(70));

System.out.println("Repository Documentation Translation Tool");

System.out.println("=".repeat(70));

System.out.println();

}

private static Language selectLanguage(Scanner scanner) {

System.out.println("=".repeat(70));

System.out.println("Select target language:");

System.out.println("=".repeat(70));

for (Map.Entry<String, Language> entry : LANGUAGES.entrySet()) {

System.out.printf(" %2s. %s%n", entry.getKey(), entry.getValue().name);

}

System.out.println();

while (true) {

System.out.print("Enter choice (1-20): ");

String choice = scanner.nextLine().trim();

if (LANGUAGES.containsKey(choice)) {

return LANGUAGES.get(choice);

}

System.out.println("❌ Invalid choice. Please enter a number between 1-20.");

}

private static List<Path> findMarkdownFiles(Path repoPath) throws IOException {

List<Path> files = new ArrayList<>();

// Add README.md

Path readme = repoPath.resolve("README.md");

if (Files.exists(readme)) {

files.add(readme);

}

// Add all .md files in docs/

Path docsPath = repoPath.resolve("docs");

if (Files.exists(docsPath)) {

Files.walk(docsPath)

.filter(p -> p.toString().endsWith(".md"))

.forEach(files::add);

}

Collections.sort(files);

return files;

}

private static Path getOutputPath(Path inputPath, Path repoPath, String langSuffix) {

String fileName = inputPath.getFileName().toString();

// Handle README.md

if (fileName.equals("README.md")) {

return repoPath.resolve("README." + langSuffix + ".md");

}

// Handle docs/ files

Path docsPath = repoPath.resolve("docs");

Path relative = docsPath.relativize(inputPath);

// Change extension: file.md -> file.{lang}.md

String stem = fileName.substring(0, fileName.length() - 3);

String newName = stem + "." + langSuffix + ".md";

return repoPath.resolve("docs_" + langSuffix).resolve(relative.getParent()).resolve(newName);

}

private static int[] translateFile(Path inputPath, Path outputPath, String targetLang) throws IOException {

// Read input

String content = Files.readString(inputPath, StandardCharsets.UTF_8);

int inputChars = content.length();

// Split into chunks

List<String> chunks = splitContent(content, CHUNK_SIZE);

// Translate chunks

StringBuilder translated = new StringBuilder();

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

System.out.print(" Chunk " + (i + 1) + "/" + chunks.size() + "... ");

String translatedChunk = translateText(chunks.get(i), targetLang);

translated.append(translatedChunk);

System.out.println("✅");

try {

Thread.sleep(1000); // Rate limiting

} catch (InterruptedException e) {

Thread.currentThread().interrupt();

}

String translatedContent = translated.toString();

int outputChars = translatedContent.length();

// Create output directory

Files.createDirectories(outputPath.getParent());

// Write output

Files.writeString(outputPath, translatedContent, StandardCharsets.UTF_8);

return new int[]{inputChars, outputChars};

}

private static List<String> splitContent(String content, int chunkSize) {

List<String> chunks = new ArrayList<>();

StringBuilder currentChunk = new StringBuilder();

boolean inCodeBlock = false;

for (String line : content.split("\n")) {

if (line.trim().startsWith("```")) {

inCodeBlock = !inCodeBlock;

}

if (currentChunk.length() + line.length() > chunkSize && !inCodeBlock && currentChunk.length() > 0) {

chunks.add(currentChunk.toString());

currentChunk = new StringBuilder();

}

currentChunk.append(line).append("\n");

}

if (currentChunk.length() > 0) {

chunks.add(currentChunk.toString());

}

return chunks;

}

private static String translateText(String text, String targetLang) throws IOException {

// Use Google Translate API (free, no key required)

String urlStr = "https://translate.googleapis.com/translate_a/single?client=gtx&sl=auto&tl="

+ targetLang + "&dt=t&q=" + URLEncoder.encode(text, StandardCharsets.UTF_8);

URL url = new URL(urlStr);

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

conn.setRequestMethod("GET");

conn.setRequestProperty("User-Agent", "Mozilla/5.0");

BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));

StringBuilder response = new StringBuilder();

String line;

while ((line = in.readLine()) != null) {

response.append(line);

}

in.close();

// Parse JSON response

JsonArray jsonArray = JsonParser.parseString(response.toString()).getAsJsonArray();

StringBuilder translated = new StringBuilder();

JsonArray translations = jsonArray.get(0).getAsJsonArray();

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

JsonArray translation = translations.get(i).getAsJsonArray();

translated.append(translation.get(0).getAsString());

}

return translated.toString();

}

private static TranslationProgress loadProgress(Path repoPath) {

Path progressFile = repoPath.resolve(PROGRESS_FILE);

if (Files.exists(progressFile)) {

try {

String json = Files.readString(progressFile);

Gson gson = new Gson();

return gson.fromJson(json, TranslationProgress.class);

} catch (Exception e) {

// Ignore errors, return new progress

}

return new TranslationProgress();

}

private static void saveProgress(Path repoPath, TranslationProgress progress) {

Path progressFile = repoPath.resolve(PROGRESS_FILE);

try {

Gson gson = new GsonBuilder().setPrettyPrinting().create();

String json = gson.toJson(progress);

Files.writeString(progressFile, json);

} catch (Exception e) {

System.err.println("Warning: Could not save progress: " + e.getMessage());

}

JavaGuide/TranslateRepo.java at main · UserXSX/JavaGuide · GitHub

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