java-online-course · Borlok · Jun 26, 2020
diff --git a/java-data-handling-template.iml b/java-data-handling-template.iml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_11">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-api:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.apiguardian:apiguardian-api:1.1.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.opentest4j:opentest4j:1.2.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-commons:1.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-params:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-engine:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-engine:1.5.2" level="project" />
+  </component>
+</module>
diff --git a/src/main/java/com/epam/izh/rd/online/Main.java b/src/main/java/com/epam/izh/rd/online/Main.java
@@ -1,4 +1,13 @@
 package com.epam.izh.rd.online;
 
+import com.epam.izh.rd.online.repository.SimpleFileRepository;
+
 public class Main {
+    public static void main(String ... args)
+    {
+        String path = "testDirCountFiles";
+        String path2 = "testDirCountFiles";
+        SimpleFileRepository fr = new SimpleFileRepository();
+        fr.copyTXTFiles(path,path2);
+    }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java b/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java
@@ -1,6 +1,13 @@
 package com.epam.izh.rd.online.repository;
 
+import java.io.*;
+import java.nio.file.*;
+import java.util.*;
+
+
 public class SimpleFileRepository implements FileRepository {
+    private long count;
+    private ArrayList<File> fileList;
 
     /**
      * Метод рекурсивно подсчитывает количество файлов в директории
@@ -10,7 +17,22 @@ public class SimpleFileRepository implements FileRepository {
      */
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        count = 0;
+        File file = new File("src\\main\\resources\\" + path);
+        if (file.isDirectory())
+            fileCounter(file);
+
+        return count;
+    }
+
+    private void fileCounter(File file) {
+        for (File f : file.listFiles()) {
+            if (f.isDirectory()) {
+                fileCounter(f);
+            } else {
+                ++count;
+            }
+        }
     }
 
     /**
@@ -21,7 +43,22 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+        count = 0;
+        File file = new File("src\\main\\resources\\" + path);
+        if (file.isDirectory()) {
+            ++count;
+            folderCounter(file);
+        }
+        return count;
+    }
+
+    private void folderCounter(File file) {
+        for (File f : file.listFiles()) {
+            if (f.isDirectory()) {
+                ++count;
+                folderCounter(f);
+            }
+        }
     }
 
     /**
@@ -32,7 +69,34 @@ public long countDirsInDirectory(String path) {
      */
     @Override
     public void copyTXTFiles(String from, String to) {
-        return;
+        fileList = new ArrayList<>();
+        File directory = new File("src\\main\\resources\\" + from);
+        findAllFilesNames(directory, ".txt");
+        fileSCopyTo(fileList, to);
+    }
+
+    private void findAllFilesNames(File file, String filter) {
+        for (File files : file.listFiles()) {
+            if (files.isDirectory()) {
+                findAllFilesNames(files, filter);
+            } else if (files.getName().contains(filter)) {
+                fileList.add(files);
+            }
+        }
+    }
+
+    private void fileSCopyTo(ArrayList<File> fileList, String to) {
+        for (File files : fileList) {
+            fileCopy(files, to);
+        }
+    }
+
+    private void fileCopy(File f, String to) {
+        try {
+            Files.copy(Paths.get(f.getPath()), Paths.get(to + "\\" + f.getName()));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
     /**
@@ -44,7 +108,28 @@ public void copyTXTFiles(String from, String to) {
      */
     @Override
     public boolean createFile(String path, String name) {
-        return false;
+        return create(path, name);
+    }
+
+    private boolean create(String path, String name) {
+        try {
+            Files.createFile(Paths.get(path + "/" + name));
+        } catch (NoSuchFileException noFile) {
+            noFile.printStackTrace();
+            createDirectory(path);
+            createFile(path, name);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return Files.exists(Paths.get(path + "\\" + name));
+    }
+
+    private void createDirectory(String path) {
+        try {
+            Files.createDirectory(Paths.get(path));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
     /**
@@ -55,6 +140,16 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+        return readFile(fileName);
+    }
+
+    private String readFile(String fileName) {
+        try {
+            Scanner sc = new Scanner(new BufferedInputStream(new FileInputStream("src\\main\\resources\\" + fileName)));
+            return sc.nextLine();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+        return "";
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java
@@ -2,18 +2,20 @@
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.math.RoundingMode;
 
 public class SimpleBigNumbersService implements BigNumbersService {
 
     /**
      * Метод делит первое число на второе с заданной точностью
      * Например 1/3 с точностью 2 = 0.33
+     *
      * @param range точность
      * @return результат
      */
     @Override
     public BigDecimal getPrecisionNumber(int a, int b, int range) {
-        return null;
+        return new BigDecimal(a).divide(new BigDecimal(b), range, RoundingMode.HALF_UP);
     }
 
     /**
@@ -24,6 +26,14 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        BigInteger result = BigInteger.valueOf(3);
+        long count = 0;
+        while (count < range) {
+            if (result.isProbablePrime(range)) {
+                count++;
+            }
+            result = result.add(BigInteger.valueOf(2));
+        }
+        return result.add(BigInteger.valueOf(-2));
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java
@@ -1,7 +1,6 @@
 package com.epam.izh.rd.online.service;
 
-import java.time.LocalDate;
-import java.time.LocalDateTime;
+import java.time.*;
 import java.time.format.DateTimeFormatter;
 
 public class SimpleDateService implements DateService {
@@ -14,7 +13,7 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        return DateTimeFormatter.ofPattern("dd-MM-yyyy").format(localDate);
     }
 
     /**
@@ -25,7 +24,7 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+        return LocalDateTime.parse(string,DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"));
     }
 
     /**
@@ -37,7 +36,8 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+
+        return formatter.format(localDate);
     }
 
     /**
@@ -47,7 +47,9 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
-        return 0;
+        Year year = Year.now();
+        while (!year.isLeap()) year = year.plusYears(1);
+        return year.getValue();
     }
 
     /**
@@ -57,7 +59,7 @@ public long getNextLeapYear() {
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
+        return Year.of(year).length() * 24 * 60 * 60;
     }
 
 

diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java
@@ -1,5 +1,9 @@
 package com.epam.izh.rd.online.service;
 
+import java.io.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SimpleRegExpService implements RegExpService {
 
     /**
@@ -11,7 +15,25 @@ public class SimpleRegExpService implements RegExpService {
      */
     @Override
     public String maskSensitiveData() {
-        return null;
+        return findAndReplaceCardNumber(readResourceFileNames("sensitive_data.txt"));
+    }
+
+    private StringBuilder readResourceFileNames(String name) {
+        try (BufferedReader reader = new BufferedReader(new FileReader("src\\main\\resources\\" + name))) {
+            return new StringBuilder(reader.readLine());
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return new StringBuilder();
+    }
+
+    private String findAndReplaceCardNumber(StringBuilder text) {
+        Pattern pat = Pattern.compile("\\s*\\d{4}\\s+(\\d{4}\\s+\\d{4})\\s+\\d{4}");
+        Matcher match = pat.matcher(text);
+        while (match.find()) {
+            text.replace(match.start(1), match.end(1), "**** ****");
+        }
+        return text.toString();
     }
 
     /**
@@ -22,6 +44,18 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
-        return null;
+        return findAndReplacePlaceholder(paymentAmount, balance, readResourceFileNames("sensitive_data.txt"));
+    }
+
+    private String findAndReplacePlaceholder(double paymentAmount, double balance, StringBuilder text) {
+        String x = text.toString();
+        Pattern pat = Pattern.compile("(\\$\\{p.*[}]).+(\\$\\{b.*[}])");
+        Matcher match = pat.matcher(x);
+        if (match.find()) {
+            text.replace(match.start(2), match.end(2), String.valueOf((int) balance)).
+                    replace(match.start(1), match.end(1), String.valueOf((int) paymentAmount));
+        }
+        System.out.println(text);
+        return text.toString();
     }
 }