start.Name.Local))
	}
	for {
		// Read tokens from the XML document in a stream.
		t, err := d.Token()
		if err != nil {
			if err == io.EOF {
				break
			}
			return err
		}

		if se, ok := t.(xml.StartElement); ok {
			switch se.Name.Local {
			case "Rule":
				var r Rule
				if err = d.DecodeElement(&r, &se); err != nil {

		na++
		i++
		// Skip spaces in between fields.
		for i < len(s) && asciiSpace[s[i]] != 0 {
			i++
		}
		fieldStart = i
	}
	if fieldStart < len(s) { // Last field might end at EOF.
		a[na] = s[fieldStart:len(s):len(s)]
	}
	return a
}

// FieldsFunc interprets s as a sequence of UTF-8-encoded code points.
// It splits the slice s at each run of code points c satisfying f(c) and

	if _, err := tw.Write([]byte("fooo")); err != nil {
		t.Fatalf("Failed to write the file's data: %s", err)
	}
	tw.Close()

	tr := NewReader(&buffer)

	for {
		header, err := tr.Next()
		if err == io.EOF {
			break
		}
		if err != nil {
			t.Fatalf("Failed to read header: %s", err)
		}
		if header.Typeflag != TypeReg {
			t.Fatalf("Typeflag should've been %d, found %d", TypeReg, header.Typeflag)
		}
	}

   * #lengthIfKnown}, returning true if it's known to be zero and false if it's known to be
   * non-zero. If the length is not known, it falls back to opening a stream and checking for EOF.
   *
   * <p>Note that, in cases where {@code lengthIfKnown} returns zero, it is <i>possible</i> that
   * chars are actually available for reading. This means that a source may return {@code true} from

            if (readn( in, sbuf, 0, 4 ) < 4) {
                try {
                    socket.close();
                } catch(IOException ioe) {
                }
                throw new SmbException( "EOF during NetBIOS session request" );
            }
            switch( sbuf[0] & 0xFF ) {
                case SessionServicePacket.POSITIVE_SESSION_RESPONSE:
                    if( log.level >= 4 )

	back := ss.size - off
	if back > int64(ss.keep) {
		return 0, errDiscardedBytes
	}
	suf := ss.Suffix()
	n = copy(p, suf[len(suf)-int(back):])
	if n != len(p) {
		err = io.EOF
	}
	return
}

func (ss *suffixSaver) Suffix() []byte {
	if len(ss.buf) < ss.keep {
		return ss.buf
	}
	buf := make([]byte, ss.keep)
	n := copy(buf, ss.buf[ss.start:])
	copy(buf[n:], ss.buf[:])

type testFile struct {
	ops fileOps
	pos int64
}

func (f *testFile) Read(b []byte) (int, error) {
	if len(b) == 0 {
		return 0, nil
	}
	if len(f.ops) == 0 {
		return 0, io.EOF
	}
	s, ok := f.ops[0].(string)
	if !ok {
		return 0, errors.New("unexpected Read operation")
	}

	n := copy(b, s)
	if len(s) > n {
		f.ops[0] = s[n:]
	} else {
		f.ops = f.ops[1:]
	}

	d := xml.NewDecoder(bytes.NewReader(dict))
	values := make(map[string]string)
	var key string
	var hasKey bool
	for {
		tok, err := d.Token()
		if err == io.EOF {
			break
		}
		if err != nil {
			return nil, err
		}
		if tok, ok := tok.(xml.StartElement); ok {
			if tok.Name.Local == "key" {
				if err := d.DecodeElement(&key, &tok); err != nil {

		// values appropriately.
		d.partEncRelOffset = 0
		d.partDecRelOffset = 0
		d.startSeqNum = 0

		d.partIndex++
		if d.partIndex == len(d.parts) {
			return n1, io.EOF
		}

		err = d.buildDecrypter(d.parts[d.partIndex].Number)
		if err != nil {
			return 0, err
		}

		n1, err = d.decrypter.Read(p[n1:])
		if err != nil {
			return 0, err
		}

		for {
			var pkg struct {
				ImportPath, Dir string
				ImportMap       map[string]string
				Standard        bool
			}
			err := dec.Decode(&pkg)
			if err == io.EOF {
				break
			}
			if err != nil {
				log.Fatalf("go list: invalid output: %v", err)
			}

			// - Package "unsafe" contains special signatures requiring