Java Path Encode encodePath(String path)

Description

encode Path

License

Open Source License

Declaration

public static String encodePath(String path) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.BitSet;

public class Main {
    private static BitSet safeCharacters;
    private static final char[] hexadecimal = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C',
            'D', 'E', 'F' };

    public static String encodePath(String path) {
        // Note: Here, ' ' should be encoded as "%20" and '/' shouldn't be encoded.
        int maxBytesPerChar = 10;
        StringBuffer rewrittenPath = new StringBuffer(path.length());
        ByteArrayOutputStream buf = new ByteArrayOutputStream(maxBytesPerChar);
        OutputStreamWriter writer;
        try {/*  w  w  w. j a v a 2s .co m*/
            writer = new OutputStreamWriter(buf, "UTF8");
        } catch (Exception e) {
            e.printStackTrace();
            writer = new OutputStreamWriter(buf);
        }

        for (int i = 0; i < path.length(); i++) {
            int c = path.charAt(i);
            if (safeCharacters.get(c)) {
                rewrittenPath.append((char) c);
            } else {
                // convert to external encoding before hex conversion
                try {
                    writer.write(c);
                    writer.flush();
                } catch (IOException e) {
                    buf.reset();
                    continue;
                }
                byte[] ba = buf.toByteArray();
                for (int j = 0; j < ba.length; j++) {
                    // Converting each byte in the buffer
                    byte toEncode = ba[j];
                    rewrittenPath.append('%');
                    int low = (toEncode & 0x0f);
                    int high = ((toEncode & 0xf0) >> 4);
                    rewrittenPath.append(hexadecimal[high]);
                    rewrittenPath.append(hexadecimal[low]);
                }
                buf.reset();
            }
        }
        return rewrittenPath.toString();
    }
}

Related

1. encodePath(String path)
2. encodePath(String path)
3. encodePath(String path, boolean encodeSlash, String charset)
4. encodePath(String url)
5. encodePathSegment(final String pathSegment)