Java Code Examples for io.netty.util.AsciiString#INDEX_NOT_FOUND

@SuppressWarnings("BetaApi") // BaseEncoding is stable in Guava 20.0
protected Http2Headers add(AsciiString name, AsciiString value) {
  byte[] nameBytes = bytes(name);
  byte[] valueBytes;
  if (!name.endsWith(binaryHeaderSuffix)) {
    valueBytes = bytes(value);
    addHeader(value, nameBytes, valueBytes);
    return this;
  }
  int startPos = 0;
  int endPos = -1;
  while (endPos < value.length()) {
    int indexOfComma = value.indexOf(',', startPos);
    endPos = indexOfComma == AsciiString.INDEX_NOT_FOUND ? value.length() : indexOfComma;
    AsciiString curVal = value.subSequence(startPos, endPos, false);
    valueBytes = BaseEncoding.base64().decode(curVal);
    startPos = indexOfComma + 1;
    addHeader(curVal, nameBytes, valueBytes);
  }
  return this;
}
 

protected Http2Headers add(AsciiString name, AsciiString value) {
  byte[] nameBytes = bytes(name);
  byte[] valueBytes;
  if (!name.endsWith(binaryHeaderSuffix)) {
    valueBytes = bytes(value);
    addHeader(value, nameBytes, valueBytes);
    return this;
  }
  int startPos = 0;
  int endPos = -1;
  while (endPos < value.length()) {
    int indexOfComma = value.indexOf(',', startPos);
    endPos = indexOfComma == AsciiString.INDEX_NOT_FOUND ? value.length() : indexOfComma;
    AsciiString curVal = value.subSequence(startPos, endPos, false);
    valueBytes = BaseEncoding.base64().decode(curVal);
    startPos = indexOfComma + 1;
    addHeader(curVal, nameBytes, valueBytes);
  }
  return this;
}
 

/**
 * Fetch charset from Content-Type header value as a char sequence.
 *
 * A lot of sites/possibly clients have charset="CHARSET", for example charset="utf-8". Or "utf8" instead of "utf-8"
 * This is not according to standard, but this method provide an ability to catch desired mistakes manually in code
 *
 * @param contentTypeValue Content-Type header value to parse
 * @return the {@code CharSequence} with charset from message's Content-Type header
 * or {@code null} if charset is not presented
 * @throws NullPointerException in case if {@code contentTypeValue == null}
 * 将charset从Content-Type头值中提取为char序列。很多站点/可能客户都有charset=" charset "，例如charset="utf-8"。或者“utf8”而不是“utf-8”这不是标准的，但是这种方法提供了在代码中手动捕获所需错误的能力
 */
public static CharSequence getCharsetAsSequence(CharSequence contentTypeValue) {
    if (contentTypeValue == null) {
        throw new NullPointerException("contentTypeValue");
    }
    int indexOfCharset = AsciiString.indexOfIgnoreCaseAscii(contentTypeValue, CHARSET_EQUALS, 0);
    if (indexOfCharset != AsciiString.INDEX_NOT_FOUND) {
        int indexOfEncoding = indexOfCharset + CHARSET_EQUALS.length();
        if (indexOfEncoding < contentTypeValue.length()) {
            return contentTypeValue.subSequence(indexOfEncoding, contentTypeValue.length());
        }
    }
    return null;
}
 

/**
 * Fetch MIME type part from Content-Type header value as a char sequence.从Content-Type头值中提取MIME类型部分作为char序列。
 *
 * @param contentTypeValue Content-Type header value to parse
 * @return the MIME type as a {@code CharSequence} from message's Content-Type header
 * or {@code null} if content-type header or MIME type part of this header are not presented
 * <p/>
 * "content-type: text/html; charset=utf-8" - "text/html" will be returned <br/>
 * "content-type: text/html" - "text/html" will be returned <br/>
 * "content-type: empty header - {@code null} we be returned
 * @throws NullPointerException in case if {@code contentTypeValue == null}
 */
public static CharSequence getMimeType(CharSequence contentTypeValue) {
    if (contentTypeValue == null) {
        throw new NullPointerException("contentTypeValue");
    }

    int indexOfSemicolon = AsciiString.indexOfIgnoreCaseAscii(contentTypeValue, SEMICOLON, 0);
    if (indexOfSemicolon != AsciiString.INDEX_NOT_FOUND) {
        return contentTypeValue.subSequence(0, indexOfSemicolon);
    } else {
        return contentTypeValue.length() > 0 ? contentTypeValue : null;
    }
}