/
EncodeUtils.java
217 lines (200 loc) · 6.5 KB
/
EncodeUtils.java
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package com.blankj.utilcode.util;
import android.os.Build;
import android.text.Html;
import android.util.Base64;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
/**
* <pre>
* author: Blankj
* blog : http://blankj.com
* time : 2016/08/07
* desc : utils about encode
* </pre>
*/
public final class EncodeUtils {
private EncodeUtils() {
throw new UnsupportedOperationException("u can't instantiate me...");
}
/**
* Return the urlencoded string.
*
* @param input The input.
* @return the urlencoded string
*/
public static String urlEncode(final String input) {
return urlEncode(input, "UTF-8");
}
/**
* Return the urlencoded string.
*
* @param input The input.
* @param charsetName The name of charset.
* @return the urlencoded string
*/
public static String urlEncode(final String input, final String charsetName) {
if (input == null || input.length() == 0) return "";
try {
return URLEncoder.encode(input, charsetName);
} catch (UnsupportedEncodingException e) {
throw new AssertionError(e);
}
}
/**
* Return the string of decode urlencoded string.
*
* @param input The input.
* @return the string of decode urlencoded string
*/
public static String urlDecode(final String input) {
return urlDecode(input, "UTF-8");
}
/**
* Return the string of decode urlencoded string.
*
* @param input The input.
* @param charsetName The name of charset.
* @return the string of decode urlencoded string
*/
public static String urlDecode(final String input, final String charsetName) {
if (input == null || input.length() == 0) return "";
try {
String safeInput = input.replaceAll("%(?![0-9a-fA-F]{2})", "%25").replaceAll("\\+", "%2B");
return URLDecoder.decode(safeInput, charsetName);
} catch (UnsupportedEncodingException e) {
throw new AssertionError(e);
}
}
/**
* Return Base64-encode bytes.
*
* @param input The input.
* @return Base64-encode bytes
*/
public static byte[] base64Encode(final String input) {
return base64Encode(input.getBytes());
}
/**
* Return Base64-encode bytes.
*
* @param input The input.
* @return Base64-encode bytes
*/
public static byte[] base64Encode(final byte[] input) {
if (input == null || input.length == 0) return new byte[0];
return Base64.encode(input, Base64.NO_WRAP);
}
/**
* Return Base64-encode string.
*
* @param input The input.
* @return Base64-encode string
*/
public static String base64Encode2String(final byte[] input) {
if (input == null || input.length == 0) return "";
return Base64.encodeToString(input, Base64.NO_WRAP);
}
/**
* Return the bytes of decode Base64-encode string.
*
* @param input The input.
* @return the string of decode Base64-encode string
*/
public static byte[] base64Decode(final String input) {
if (input == null || input.length() == 0) return new byte[0];
return Base64.decode(input, Base64.NO_WRAP);
}
/**
* Return the bytes of decode Base64-encode bytes.
*
* @param input The input.
* @return the bytes of decode Base64-encode bytes
*/
public static byte[] base64Decode(final byte[] input) {
if (input == null || input.length == 0) return new byte[0];
return Base64.decode(input, Base64.NO_WRAP);
}
/**
* Return html-encode string.
*
* @param input The input.
* @return html-encode string
*/
public static String htmlEncode(final CharSequence input) {
if (input == null || input.length() == 0) return "";
StringBuilder sb = new StringBuilder();
char c;
for (int i = 0, len = input.length(); i < len; i++) {
c = input.charAt(i);
switch (c) {
case '<':
sb.append("<"); //$NON-NLS-1$
break;
case '>':
sb.append(">"); //$NON-NLS-1$
break;
case '&':
sb.append("&"); //$NON-NLS-1$
break;
case '\'':
//http://www.w3.org/TR/xhtml1
// The named character reference ' (the apostrophe, U+0027) was
// introduced in XML 1.0 but does not appear in HTML. Authors should
// therefore use ' instead of ' to work as expected in HTML 4
// user agents.
sb.append("'"); //$NON-NLS-1$
break;
case '"':
sb.append("""); //$NON-NLS-1$
break;
default:
sb.append(c);
}
}
return sb.toString();
}
/**
* Return the string of decode html-encode string.
*
* @param input The input.
* @return the string of decode html-encode string
*/
public static CharSequence htmlDecode(final String input) {
if (input == null || input.length() == 0) return "";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
return Html.fromHtml(input, Html.FROM_HTML_MODE_LEGACY);
} else {
return Html.fromHtml(input);
}
}
/**
* Return the binary encoded string padded with one space
*
* @param input The input.
* @return binary string
*/
public static String binaryEncode(final String input) {
if (input == null || input.length() == 0) return "";
StringBuilder sb = new StringBuilder();
for (char i : input.toCharArray()) {
sb.append(Integer.toBinaryString(i)).append(" ");
}
return sb.deleteCharAt(sb.length() - 1).toString();
}
/**
* Return UTF-8 String from binary
*
* @param input binary string
* @return UTF-8 String
*/
public static String binaryDecode(final String input) {
if (input == null || input.length() == 0) return "";
String[] splits = input.split(" ");
StringBuilder sb = new StringBuilder();
for (String split : splits) {
sb.append(((char) Integer.parseInt(split, 2)));
}
return sb.toString();
}
}