Method doCopyFile

src/main/java/com/volmit/adapt/util/IO.java:447–464

Internal copy file method. @param srcFile the validated source file, not null @param destFile the validated destination file, not null @param preserveFileDate whether to preserve the file date @throws IOException if an error occurs

(File srcFile, File destFile, boolean preserveFileDate)

     * @throws IOException if an error occurs
     */
    private static void doCopyFile(File srcFile, File destFile, boolean preserveFileDate) throws IOException {
        if (destFile.exists() && destFile.isDirectory()) {
            throw new IOException("Destination '" + destFile + "' exists but is a directory");
        }

        try (FileInputStream input = new FileInputStream(srcFile)) {
            try (FileOutputStream output = new FileOutputStream(destFile)) {
                IO.copy(input, output);
            }
        }

        if (srcFile.length() != destFile.length()) {
            throw new IOException("Failed to copy full contents from '" + srcFile + "' to '" + destFile + "'");
        }
        if (preserveFileDate) {
            destFile.setLastModified(srcFile.lastModified());
        }
    }

    /**
     * Unconditionally close an <code>Reader</code>.