Add File

history/005_letter_test/src/main/java/com/github/drinkjava2/frog/util/FrogFileUtils.java

@@ -0,0 +1,141 @@
+/* Copyright 2018-2020 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by
+ * applicable law or agreed to in writing, software distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
+ * OF ANY KIND, either express or implied. See the License for the specific
+ * language governing permissions and limitations under the License.
+ */
+package com.github.drinkjava2.frog.util;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * File Utilities used in this project
+ * 
+ * @author Yong Zhu
+ * @since 1.0
+ */
+public class FrogFileUtils {
+
+	private FrogFileUtils() {
+		// default constructor
+	}
+
+	public static boolean deleteFile(String fileFullPath) {
+		File file = new File(fileFullPath);
+		return file.delete(); // NOSONAR
+	}
+
+	public static void writeFile(String fileFullPath, byte[] byteArry) {
+		File file = new File(fileFullPath);
+		if (!file.getParentFile().exists())
+			file.getParentFile().mkdirs();
+		FileOutputStream fos = null;
+		try {
+			fos = new FileOutputStream(file);
+			fos.write(byteArry);
+			fos.close();
+		} catch (Exception e) {
+			e.printStackTrace();
+		} finally {
+			if (fos != null) {
+				try {
+					try {
+						fos.flush();
+					} catch (Exception e) {
+					}
+					fos.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+
+	public static void writeFile(String fileFullPath, String text, String encoding) {
+		File file = new File(fileFullPath);
+		if (!file.getParentFile().exists())
+			file.getParentFile().mkdirs();
+		FileOutputStream fos = null;
+		try {
+			fos = new FileOutputStream(file);
+			byte[] bytes;
+			bytes = text.getBytes(encoding);
+			fos.write(bytes);
+			fos.close();
+		} catch (Exception e) {
+			e.printStackTrace();
+		} finally {
+			if (fos != null) {
+				try {
+					try {
+						fos.flush();
+					} catch (Exception e) {
+					}
+					fos.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+
+	public static String readFile(String fileFullPath, String encoding) {
+		InputStream inputStream;
+		try {
+			inputStream = new FileInputStream(new File(fileFullPath));
+		} catch (FileNotFoundException e1) {
+			return null;
+		}
+		try {
+			ByteArrayOutputStream result = new ByteArrayOutputStream();
+			byte[] buffer = new byte[1024];
+			int length;
+			while ((length = inputStream.read(buffer)) != -1)
+				result.write(buffer, 0, length);
+			String string = result.toString(encoding);
+			return string;
+		} catch (IOException e) {
+			e.printStackTrace();
+			return null;
+		} finally {
+			try {
+				inputStream.close();
+			} catch (IOException e) {
+			}
+		}
+	}
+
+	public static void appendFile(String fileName, String content) {
+		FileOutputStream fos = null;
+		try {
+			fos = new FileOutputStream(fileName, true);
+			fos.write(content.getBytes());
+			fos.write("\r\n".getBytes());
+		} catch (IOException e) {
+			e.printStackTrace();
+		} finally {
+			if (fos != null) {
+				try {
+					try {
+						fos.flush();
+					} catch (Exception e) {
+					}
+					fos.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+
+}