case c.Is(ChecksumSHA1):
		return sha1.New()
	case c.Is(ChecksumSHA256):
		return sha256.New()
	}
	return nil
}

// Trailing return whether the checksum is trailing.
func (c ChecksumType) Trailing() bool {
	return c.Is(ChecksumTrailing)
}

// NewChecksumFromData returns a new checksum from specified algorithm and base64 encoded value.

	cs, err := GetContentChecksum(req.Header)
	if err != nil {
		return ErrInvalidChecksum
	}
	if cs == nil {
		return nil
	}
	r.contentHash = *cs
	if cs.Type.Trailing() {
		r.trailer = req.Trailer
	}
	return r.AddNonTrailingChecksum(cs, ignoreValue)
}

// AddChecksumNoTrailer will add checksum checks as specified in

        // ignore rule '\*' will match the path '*'

        // 'abc.*/' -> go
        // 'abc.*'  -> skip this rule,
        //    coz trailing single wildcard will be handed by [trailing wildcard]
        /(^|[^\\]+)(\\\*)+(?=.+)/g,

        // '*.js' matches '.js'
        // '*.js' doesn't match 'abc'
        (_, p1, p2) => {
            // 1.
            // > An asterisk "*" matches anything except a slash.

    int destIndex = 0;
    int unescapedChunkStart = 0;

    while (index < end) {
      int cp = codePointAt(s, index, end);
      if (cp < 0) {
        throw new IllegalArgumentException("Trailing high surrogate at end of input");
      }
      // It is possible for this to return null because nextEscapeIndex() may
      // (for performance reasons) yield some false positives but it must never

    assertThat(letters).containsExactly("a", "", " b", "c").inOrder();
  }

  public void testCharacterSplitWithTrailingDelimiter() {
    String trailing = "a,b,c,";
    Iterable<String> letters = COMMA_SPLITTER.split(trailing);
    assertThat(letters).containsExactly("a", "b", "c", "").inOrder();
  }

  public void testCharacterSplitWithLeadingDelimiter() {
    String leading = ",a,b,c";

    assertThat(letters).containsExactly("a", "", " b", "c").inOrder();
  }

  public void testCharacterSplitWithTrailingDelimiter() {
    String trailing = "a,b,c,";
    Iterable<String> letters = COMMA_SPLITTER.split(trailing);
    assertThat(letters).containsExactly("a", "b", "c", "").inOrder();
  }

  public void testCharacterSplitWithLeadingDelimiter() {
    String leading = ",a,b,c";

		{"␀␁␂␃␄␅␆␇␈␉␊␋␌␍␎␏␐␑␒␓␔␕␖␗␘␙␚␛␜␝␞␟␡", true},
		{"trailing VT␋/trailing VT␋", true},
		{"␋leading VT/␋leading VT", true},
		{"~leading tilde", true},
		{"\rleading CR", true},
		{"\nleading LF", true},
		{"\tleading HT", true},
		{"trailing CR\r", true},
		{"trailing LF\n", true},
		{"trailing HT\t", true},
		// cases for which test should fail.
		// passing invalid object names.

//
// NOP
//
//	LNOP comma // asm doesn't support the trailing comma.
//	{
//		outcode(int($1), &nullgen, 0, &nullgen);
//	}
	NOP

//	LNOP rreg comma // asm doesn't support the trailing comma.
//	{
//		outcode(int($1), &$2, 0, &nullgen);
//	}
	NOP R2

//	LNOP freg comma // asm doesn't support the trailing comma.
//	{
//		outcode(int($1), &$2, 0, &nullgen);
//	}
	NOP	F2

            /*
             * Samba has a tendency to return pathConsumed values so that they consume a trailing slash of the
             * requested path. Normalize this here.
             */
            if ( reqPath.charAt(consumed - 1) == '\\' ) {
                if ( log.isDebugEnabled() ) {
                    log.debug("Server consumed trailing slash of request path, adjusting");
                }
                dr.pathConsumed--;

		{
			path:   "/bucket/object/1/",
			bucket: "bucket",
			object: "object/1/",
		},
		// Test case 5 object has many trailing separators.
		{
			path:   "/bucket/object/1///",
			bucket: "bucket",
			object: "object/1///",
		},
		// Test case 6 object has only trailing separators.
		{
			path:   "/bucket/object///////",
			bucket: "bucket",
			object: "object///////",
		},