/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* 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 org.jetbrains.kotlin.generators.util;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.util.text.StringUtil;
import java.io.File;
import java.io.IOException;
public class GeneratorsFileUtil {
@SuppressWarnings("UseOfSystemOutOrSystemErr")
public static void writeFileIfContentChanged(File file, String newText) throws IOException {
writeFileIfContentChanged(file, newText, true);
}
@SuppressWarnings("UseOfSystemOutOrSystemErr")
public static void writeFileIfContentChanged(File file, String newText, boolean logNotChanged) throws IOException {
File parentFile = file.getParentFile();
if (!parentFile.exists()) {
if (parentFile.mkdirs()) {
System.out.println("Directory created: " + parentFile.getAbsolutePath());
}
else {
throw new IllegalStateException("Cannot create directory: " + parentFile);
}
}
if (checkFileIgnoringLineSeparators(file, newText)) {
if (logNotChanged) {
System.out.println("Not changed: " + file.getAbsolutePath());
}
return;
}
boolean useTempFile = !SystemInfo.isWindows;
File tempFile = useTempFile ? new File(file.getName() + ".tmp") : file;
FileUtil.writeToFile(tempFile, newText);
System.out.println("File written: " + tempFile.getAbsolutePath());
if (useTempFile) {
if (!tempFile.renameTo(file)) {
throw new RuntimeException("failed to rename " + tempFile + " to " + file);
}
System.out.println("Renamed " + tempFile + " to " + file);
}
System.out.println();
}
private static boolean checkFileIgnoringLineSeparators(File file, String content) {
String currentContent;
try {
currentContent = FileUtil.loadFile(file, true);
}
catch (Throwable ignored) {
return false;
}
return StringUtil.convertLineSeparators(content).equals(currentContent);
}
}