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feat[file]: copy directory

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godotg
2024-04-03 12:23:10 +08:00
parent 3630723cfe
commit 8bbd63077a
2 changed files with 71 additions and 49 deletions
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protocol/src/main/java/com/zfoo/protocol/util/FileUtils.java
+52 -49
View File
@@ -237,46 +237,6 @@ public abstract class FileUtils {
}
// ------------------------------------------------复制文件------------------------------------------------
/**
* Copies a file to a new location preserving the file date.
* <p>
* This method copies the contents of the specified source file to the
* specified destination file. The directory holding the destination file is
* created if it does not exist. If the destination file exists, then this
* method will overwrite it.
* <p>
* <strong>Note:</strong> This method tries to preserve the file's last
* modified date/times using {@link File#setLastModified(long)}, however
* it is not guaranteed that the operation will succeed.
* If the modification operation fails, no indication is provided.
*
* @param srcFile an existing file to copy, must not be null
* @param destFile the new file, must not be null
* @throws IOException if source or destination is invalid
* @throws IOException if an IO error occurs during copying
* @throws IOException if the output file length is not the same as the input file length after the copy completes
*/
public static void copyFile(final File srcFile, final File destFile) throws IOException {
copyFile(srcFile, destFile, true);
}
public static void copyFileToDirectory(final File srcFile, final File destDir) throws IOException {
copyFileToDirectory(srcFile, destDir, true);
}
public static void copyFileToDirectory(final File srcFile, final File destDir, final boolean preserveFileDate)
throws IOException {
if (destDir == null) {
throw new NullPointerException("Destination must not be null");
}
if (destDir.exists() && !destDir.isDirectory()) {
throw new IllegalArgumentException(StringUtils.format("Destination [destDir:{}] is not a directory", destDir));
}
final File destFile = new File(destDir, srcFile.getName());
copyFile(srcFile, destFile, preserveFileDate);
}
/**
* Copies a file to a new location.
* <p>
@@ -293,14 +253,12 @@ public abstract class FileUtils {
*
* @param srcFile an existing file to copy, must not be {@code null}
* @param destFile the new file, must not be {@code null}
* @param preserveFileDate true if the file date of the copy
* should be the same as the original
* @throws IOException if source or destination is invalid
* @throws IOException if an IO error occurs during copying
* @throws IOException if the output file length is not the same as the input file length after the copy completes
*/
public static void copyFile(final File srcFile, final File destFile,
final boolean preserveFileDate) throws IOException {
public static void copyFile(final File srcFile, final File destFile) throws IOException {
checkFileRequirements(srcFile, destFile);
if (srcFile.isDirectory()) {
throw new IOException(StringUtils.format("Source [srcFile:{}] exists but is a directory", srcFile));
@@ -317,7 +275,29 @@ public abstract class FileUtils {
if (destFile.exists() && !destFile.canWrite()) {
throw new IOException(StringUtils.format("Destination [destFile:{}] exists but is read-only", destFile));
}
doCopyFile(srcFile, destFile, preserveFileDate);
doCopyFile(srcFile, destFile);
}
public static void copyFileToDirectory(final File srcFile, final File destDir) throws IOException {
if (destDir == null) {
throw new NullPointerException("Destination must not be null");
}
if (destDir.exists() && !destDir.isDirectory()) {
throw new IllegalArgumentException(StringUtils.format("Destination [destDir:{}] is not a directory", destDir));
}
final File destFile = new File(destDir, srcFile.getName());
copyFile(srcFile, destFile);
}
public static void copyDirectory(final File srcDir, final File destDir) throws IOException {
checkFileRequirements(srcDir, destDir);
if (!srcDir.isDirectory()) {
throw new IOException(StringUtils.format("Source [{}] exists but is not a directory", srcDir));
}
if (srcDir.getCanonicalPath().equals(destDir.getCanonicalPath())) {
throw new IOException(StringUtils.format("Source [{}] and destination '" + destDir + "' are the same", srcDir));
}
doCopyDirectory(srcDir, destDir);
}
/**
@@ -349,15 +329,13 @@ public abstract class FileUtils {
*
* @param srcFile the validated source file, must not be {@code null}
* @param destFile the validated destination file, must not be {@code null}
* @param preserveFileDate whether to preserve the file date
* @throws IOException if an error occurs
* @throws IOException if the output file length is not the same as the input file length after the
* copy completes
* @throws IllegalArgumentException "Negative size" if the file is truncated so that the size is less than the
* position
*/
private static void doCopyFile(final File srcFile, final File destFile, final boolean preserveFileDate)
throws IOException {
private static void doCopyFile(final File srcFile, final File destFile) throws IOException {
if (destFile.exists() && destFile.isDirectory()) {
throw new IOException(StringUtils.format("Destination [destFile:{}] exists but is a directory", destFile));
}
@@ -393,8 +371,33 @@ public abstract class FileUtils {
throw new IOException(StringUtils.format("Failed to copy full contents from [srcFile:{}] to [destFile:{}] Expected length:[srcLen:{}] Actual [dstLen:{}]"
, srcFile, destFile, srcLen, dstLen));
}
if (preserveFileDate) {
destFile.setLastModified(srcFile.lastModified());
}
private static void doCopyDirectory(final File srcDir, final File destDir) throws IOException {
// recurse
final File[] srcFiles = srcDir.listFiles();
if (srcFiles == null) { // null if abstract pathname does not denote a directory, or if an I/O error occurs
throw new IOException("Failed to list contents of " + srcDir);
}
if (destDir.exists()) {
if (!destDir.isDirectory()) {
throw new IOException(StringUtils.format("Destination [{}] exists but is not a directory", destDir));
}
} else {
if (!destDir.mkdirs() && !destDir.isDirectory()) {
throw new IOException(StringUtils.format("Destination [{}] directory cannot be created", destDir));
}
}
if (!destDir.canWrite()) {
throw new IOException(StringUtils.format("Destination [{}] cannot be written to", destDir));
}
for (final File srcFile : srcFiles) {
final File dstFile = new File(destDir, srcFile.getName());
if (srcFile.isDirectory()) {
doCopyDirectory(srcFile, dstFile);
} else {
doCopyFile(srcFile, dstFile);
}
}
}
protocol/src/test/java/com/zfoo/protocol/util/FileUtilTesting.java
+19
View File
@@ -79,4 +79,23 @@ public class FileUtilTesting {
System.out.println(FileUtils.searchFileInProject("User"));
}
@Test
public void copyFileTest() throws IOException {
var srcFile = new File("C:\\Users\\Administrator\\Desktop\\aaa\\aaa.txt");
var destFile = new File("C:\\Users\\Administrator\\Desktop\\bbb\\bbb");
FileUtils.copyFile(srcFile, destFile);
}
@Test
public void copyFileToDirectoryTest() throws IOException {
var srcFile = new File("C:\\Users\\Administrator\\Desktop\\aaa\\aaa.txt");
var destFile = new File("C:\\Users\\Administrator\\Desktop\\bbb\\");
FileUtils.copyFileToDirectory(srcFile, destFile);
}
@Test
public void copyDirectoryTest() throws IOException {
var srcFile = new File("C:\\Users\\Administrator\\Desktop\\aaa");
var destFile = new File("C:\\Users\\Administrator\\Desktop\\bbb");
FileUtils.copyDirectory(srcFile, destFile);
}
}