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Added new Java class FileUtils 2

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Robert Vokac 2023-07-24 17:43:24 +02:00
parent d60c3db582
commit 3321ba3981
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1 changed files with 36 additions and 31 deletions
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67
power-io/src/main/java/org/nanoboot/powerframework/io/utils/FileUtils.java
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@ -1,4 +1,3 @@
///////////////////////////////////////////////////////////////////////////////////////////////
// power-framework: Java library with many purposes of usage.
// Copyright (C) 2023-2023 the original author or authors.
@ -17,7 +16,6 @@
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
///////////////////////////////////////////////////////////////////////////////////////////////
package org.nanoboot.powerframework.io.utils;
import java.io.File;
@ -35,37 +33,44 @@ import java.util.stream.Collectors;
* @author robertvokac
*/
public class FileUtils {
private FileUtils() {
//Not meant to be instantiated.
}
public static String readTextFromFile(File file) {
if (!file.exists()) {
return "";
}
try {
return new String(Files.readAllBytes(Paths.get(file.getAbsolutePath())));
} catch (IOException ex) {
throw new RuntimeException("Reading file failed: " + file.getName(), ex);
}
}
public static List<String> readLinesFromFile(File file) {
String content = readTextFromFile(file);
String[] lines = content.split("\\r?\\n|\\r");
return Arrays.stream(lines).filter(l -> !l.trim().isEmpty()).collect(
Collectors.toList());
}
public static void writeTextToFile(String text, File file) {
FileWriter fileWriter;
try {
fileWriter = new FileWriter(file);
} catch (IOException ex) {
ex.printStackTrace();
throw new RuntimeException("Writing to file failed: " + file.getName(), ex);
}
PrintWriter printWriter = new PrintWriter(fileWriter);
printWriter.print(text);
printWriter.close();
}
public static String readTextFromFile(File file) {
if (!file.exists()) {
return "";
}
try {
return new String(Files.readAllBytes(Paths.get(file.getAbsolutePath())));
} catch (IOException ex) {
throw new RuntimeException("Reading file failed: " + file.getName(), ex);
}
}
public static List<String> readLinesFromFile(File file) {
return readLinesFromFile(file, false);
}
public static List<String> readLinesFromFile(File file, boolean skipEmptyLines) {
String content = readTextFromFile(file);
String[] lines = content.split("\\r?\\n|\\r");
return Arrays.stream(lines).filter(l -> skipEmptyLines ? !l.trim().isEmpty() : true).collect(
Collectors.toList());
}
public static void writeTextToFile(String text, File file) {
FileWriter fileWriter;
try {
fileWriter = new FileWriter(file);
} catch (IOException ex) {
ex.printStackTrace();
throw new RuntimeException("Writing to file failed: " + file.getName(), ex);
}
PrintWriter printWriter = new PrintWriter(fileWriter);
printWriter.print(text);
printWriter.close();
}
}