public static void copyFile()

in src/main/java/org/apache/maven/shared/utils/io/FileUtils.java [737:763]

20 lines of code
6 McCabe index (conditional complexity)


    public static void copyFile(@Nonnull final File source, @Nonnull final File destination) throws IOException {
        // check source exists
        if (!source.exists()) {
            final String message = "File " + source + " does not exist";
            throw new IOException(message);
        }
        if (Files.isSymbolicLink(source.toPath())) {
            File target = Files.readSymbolicLink(source.toPath()).toFile();
            createSymbolicLink(destination, target);
            return;
        }

        // check source != destination, see PLXUTILS-10
        if (destination.exists() && Files.isSameFile(source.toPath(), destination.toPath())) {
            // if they are equal, we can exit the method without doing any work
            return;
        }

        mkdirsFor(destination);

        doCopyFile(source, destination);

        if (source.length() != destination.length()) {
            final String message = "Failed to copy full contents from " + source + " to " + destination;
            throw new IOException(message);
        }
    }