Parse out a charset from a content type header. : Regular Expression « Development « Android

1. Android
2. Development
3. Regular Expression

Parse out a charset from a content type header.

   

import java.util.regex.Matcher;
import java.util.regex.Pattern;

class Main {
    private static final Pattern charsetPattern = Pattern.compile("(?i)\\bcharset=\\s*\"?([^\\s;\"]*)");

  /**
   * Parse out a charset from a content type header.
   * 
   * @param contentType
   *            e.g. "text/html; charset=EUC-JP"
   * @return "EUC-JP", or null if not found. Charset is trimmed and
   *         uppercased.
   */
  static String getCharsetFromContentType(String contentType) {
    if (contentType == null)
      return null;

    Matcher m = charsetPattern.matcher(contentType);
    if (m.find()) {
      return m.group(1).trim().toUpperCase();
    }
    return null;
  }
}

   
    
    
  

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