package file.laba4;

//Прочитать текст Java-программы и в каждом слове длиннее двух символов

//все строчные символы заменить прописными.

import java.io.*;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class ChangedJavaFile {

private static final String REPLACE_WORD = "\\w{2,}";

private static final String EXTENSION_REGEX = "\\.java$";

private File file;

private AuxiliaryFile temp;

public ChangedJavaFile(String path) throws IOException, IllegalArgumentException {

this(new File(path));

}

public ChangedJavaFile(File file) throws IOException, IllegalArgumentException {

if (file.exists()) {

this.file = new File(file.getCanonicalFile().toString());

} else if (isRegexExist(file.getName(), EXTENSION_REGEX)) {

throw new IllegalArgumentException();

} else {

throw new FileNotFoundException();

}

}

private boolean isRegexExist(String str, String regex) {

System.out.println(Pattern.compile(regex).matcher(str).group());

return Pattern.compile(regex).matcher(str).find();

}

public void changeable() throws IOException {

temp = new AuxiliaryFile(file);

try (BufferedReader reader = new BufferedReader(new FileReader(file))) {

String str;

while ((str = reader.readLine()) != null) {

findReplaceWord(str);

}

} catch (IOException e) {

e.printStackTrace();

}

AuxiliaryFile.replaceOriginal(temp.getPath(), file);

}

private void findReplaceWord(String str) {

Matcher matcherWord = Pattern.compile(REPLACE_WORD).matcher(str);

while (matcherWord.find()) {

String changeWord = matcherWord.group();

str = str.replaceAll(changeWord, changeWord.toUpperCase());

}

writeToAuxiliaryFile(str);

}

private void writeToAuxiliaryFile(String str) {

temp.writeLineToFile(new StringBuilder(str));

}

public StringBuilder seeFile(File file) {

StringBuilder strB = new StringBuilder();

try (BufferedReader reader = new BufferedReader(new FileReader(file))) {

strB = readTextToBuffer(reader);

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return strB;

}

private StringBuilder readTextToBuffer(BufferedReader reader) throws IOException {

StringBuilder strB = new StringBuilder();

String str;

while ((str = reader.readLine()) != null) {

strB.append(str).append("\n");

}

return strB;

}

public File getFile() {

return file;

}

}