| 0,0 → 1,79 |
|---|
| package ak.photoalbum.util; |
| |
| import java.util.Map; |
| import java.util.HashMap; |
| import java.io.File; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.IOException; |
| |
| public class FileUtils |
| { |
| protected static final int COPY_BUFFER_SIZE = 4096; |
| protected static final Map MIME_MAP = new HashMap(); |
| |
| static { |
| MIME_MAP.put("jpg", "image/jpeg"); |
| MIME_MAP.put("jpeg", "image/jpeg"); |
| MIME_MAP.put("png", "image/png"); |
| } |
| |
| public static String getMime(String ext) |
| { |
| if(ext == null) |
| return null; |
| else |
| return (String)MIME_MAP.get(ext.toLowerCase()); |
| } |
| |
| public static void copyStreams(InputStream in, OutputStream out) |
| throws IOException |
| { |
| byte[] buf = new byte[COPY_BUFFER_SIZE]; |
| int len; |
| |
| while((len = in.read(buf)) > 0) { |
| out.write(buf, 0, len); |
| } |
| } |
| |
| public static String extractFileName(String fullName) |
| { |
| if(fullName == null) return null; |
| |
| int pointPos = fullName.lastIndexOf('.'); |
| |
| if(pointPos <= 0) |
| return fullName; |
| else |
| return fullName.substring(0, pointPos); |
| } |
| |
| public static String extractFileExt(String fullName) |
| { |
| if(fullName == null) return null; |
| |
| int pointPos = fullName.lastIndexOf('.'); |
| |
| if(pointPos <= 0) |
| return ""; |
| else |
| return fullName.substring(pointPos + 1); |
| } |
| |
| public static String replaceFileSeparator(String path, String replaceWith) |
| { |
| String sep = File.separator; |
| StringBuffer buf = new StringBuffer(); |
| int pos = -1; |
| int oldPos = -1; |
| |
| while((pos = path.indexOf(sep, pos + 1)) >= 0) { |
| buf.append(path.substring(oldPos + 1, pos)).append(replaceWith); |
| oldPos = pos; |
| } |
| buf.append(path.substring(oldPos + 1)); |
| |
| return buf.toString(); |
| } |
| } |