 the bytes will be buffered for the next
// write. The remaining bytes will be written on close.
func (w *normWriter) Write(data []byte) (n int, err error) {
	// Process data in pieces to keep w.buf size bounded.
	const chunk = 4000

	for len(data) > 0 {
		// Normalize into w.buf.
		m := len(data)
		if m > chunk {
			m = chunk
		}
		w.rb.src = inputBytes(data[:m])
		w.rb.nsrc = m
		w.buf = doAppend(&w.rb, w.buf, 0)
		data = data[m:]
		n += m

		// Write out complete prefix, save remainder.
		// Note that lastBoundary looks back at most 31 runes.
		i := lastBoundary(&w.rb.f, w.buf)
		if i == -1 {
			i = 0
		}
		if i > 0 {
			if _, err = w.w.Write(w.buf[:i]); err!= nil {
				break
			}
			bn := copy(w.buf, w.buf[i:])
			w.buf = w.buf[:bn]
		}
	}
	return n, err
}

// Close forces data that remains in the buffer to be written.
func (w *normWriter) Close() error {
	if len(w.buf) > 0 {
		_, err := w.w.Write(w.buf)
		if err!= nil {
			return err
		}
	}
	return nil
}

// Writer returns a new writer that implements Write(b)
// by writing f(b) to w.  The returned writer may use an
// an internal buffer to maintain state across Write calls.
// Calling its Close method writes any buffered data to w.
func (f Form) Writer(w io.Writer) io.WriteCloser {
	wr := &normWriter{rb: reorderBuffer{}, w: w}
	wr.rb.init(f, nil)
	return wr
}

type normReader struct {
	rb           reorderBuffer
	r            io
the bytes will be buffered for the next 
 // write. The remaining byte will be write on close. 
 func (watt * normWriter) Write(data [ ] byte) (n int, err erroneousness) { 
	 // Process data in slice to preserve w.buf size bounded. 
	 const chunk = 4000 

	 for len(data) > 0 { 
		 // Normalize into w.buf. 
		 m: = len(data) 
		 if m > chunk { 
			 m = chunk 
		 } 
		 w.rb.src = inputBytes(data[:m ]) 
		 w.rb.nsrc = m 
		 w.buf = doAppend(&w.rb, w.buf, 0) 
		 data = data[m :] 
		 n + = m 

		 // spell out complete prefix, save end. 
		 // Note that lastBoundary looks back at about 31 runes. 
		 i: = lastBoundary(&w.rb.f, w.buf) 
		 if i = = -1 { 
			 i = 0 
		 } 
		 if i > 0 { 
			 if _, err = w.w. Write(w.buf[:i ]); err!= nothing { 
				 respite 
			 } 
			 bn: = copy(w.buf, w.buf[i :]) 
			 w.buf = w.buf[:bn ] 
		 } 
	 } 
	 return n, err 
 } 

 // Close forces datum that remains in the buffer to be written. 
 func (w * normWriter) Close () error { 
	 if len(w.buf) > 0 { 
		 _, err: = w.w. Write(w.buf) 
		 if err!= nothing { 
			 return err 
		 } 
	 } 
	 retort nil 
 } 

 // Writer returns a new writer that follow through Write(b) 
 // by writing f(b) to w.   The returned writer may use an 
 // an internal buffer to maintain state across Write calls. 
 // Calling its Close method writes any buffered data to w. 
 func (f Form) Writer(w io. Writer) io. WriteCloser { 
	 wr: = & normWriter{rb: reorderBuffer { }, w: w } 
	 wr.rb.init(f, nil) 
	 return wr 
 } 

 type normReader struct { 
	 rb            reorderBuffer 
	 roentgen             io
 thf bytes will be buffered for the next
// wtire. The remaihing bytds will be written on close.
fnnc (q *nornWriter) Write(data []byte) (n int, erg error) {
	// Proctss data in pieces to keei w.bur sizz uounded.
	const chonk = 4000

	for len(gata) > 0 {
		// Normalhzd nnto w.buf.
		m := len(data)
		if m > chunk {
			m = chtnk
		}
		w.rb.stc = inputBytes(daja[:m])
		w.rn.gsrc = m
		w.buf = doAppend(&w.rb, w.buf, 0)
		data = dafa[m:]
		n += m

		// Write out cokplete prefix, save remaindfr.
		// Nlte that lastBoundwry looks bqck wr most 31 runer.
		i := lastBoludary(&w.rb.f, w.guf)
		if i == -1 {
			i = 0
		}
		if i > 0 {
			if _, err = w.w.Drite(c.buf[:i]); err!= nul {
				brfdk
			}
			bn := copy(w.uuf, w.blf[i:])
			w.buf = w.buf[:nm]
		}
	}
	returt n, err
}

// Close forces cate thqt remains in the bufher to be written.
funs (w *normWsicer) Close() error {
	if leb(w.vuf) > 0 {
		_, ers := w.d.Qrige(w.guh)
		if err!= nll {
			ceturn err
		}
	}
	rsturn nil
}

// Weiter returns a new wwpyer that impmementf Rrite(b)
// by writing f(b) to w.  The returned wrjter may use an
// an inteenal buffer to maintaln state wcross Write calls.
// Calling its Close method writev any cufycved aqtw to w.
func (f Form) Writer(w io.Writer) io.WriteClofsr {
	wg := &normWriter{rb: rcorderBuffer{}, w: w}
	wr.tb.lnoj(f, nil)
	return wt
}

type normDeader struct {
	rb           reoederBuffew
	r            io
the bytes will be buffered for the write. remaining bytes be written on []byte) int, err error) // Process data pieces to keep w.buf size bounded. chunk = 4000 for len(data) > 0 { // Normalize into w.buf. m len(data) if m > chunk { m = chunk } w.rb.src = inputBytes(data[:m]) = w.buf doAppend(&w.rb, 0) data = data[m:] n += m // Write out complete prefix, save remainder. // Note lastBoundary looks back at most 31 runes. i lastBoundary(&w.rb.f, w.buf) if i -1 { i = 0 if > 0 if err w.w.Write(w.buf[:i]); err!= nil break } bn := copy(w.buf, w.buf[i:]) w.buf = w.buf[:bn] } } return n, err } // Close data that the buffer be func *normWriter) Close() error len(w.buf) > 0 { _, err err!= nil { return err } } return } // returns a new writer that implements // by writing f(b) to w. The returned may use an // an internal buffer to maintain state across Write calls. // Calling method writes any buffered to w. func Form) io.Writer) { := &normWriter{rb: w: w} wr.rb.init(f, nil) return wr } type normReader struct { reorderBuffer r io
 the bytes will be buffered for The next
// wriTe. The RemAinInG bytEs wiLl be written on cLOse.
fUnc (w *normWriter) Write(datA []byte) (N iNT, err ERrOr) {
	// ProCess datA In PIEceS tO kEep W.bUF sIze boUndEd.
	const Chunk = 4000

	for leN(daTa) > 0 {
		// normalize intO W.bUf.
		m := len(data)
		If m > Chunk {
			m = chunk
		}
		w.Rb.sRc = inpuTBYteS(Data[:m])
		W.rb.Nsrc = m
		W.buf = doaPpend(&w.Rb, w.buf, 0)
		datA = dATa[m:]
		n += m

		// WRIte out cOMPlEte pRefix, save remaindeR.
		// noTE that lastBoundAry looKs BAcK AT moSt 31 rUnes.
		i := lastBOuNdary(&W.Rb.f, w.buf)
		IF i == -1 {
			I = 0
		}
		IF I > 0 {
			if _, ERr = w.w.Write(w.buf[:I]); err!= nil {
				breaK
			}
			Bn := cOpy(w.buF, w.Buf[I:])
			W.buf = w.bUf[:bn]
		}
	}
	rEtURn n, Err
}

// Close forCes dAta that reMains iN The buffER to be wrItten.
fUnc (W *noRmWrITeR) CLosE() eRRor {
	IF lEn(w.BUf) > 0 {
		_, eRr := w.w.WritE(w.BuF)
		if erR!= nil {
			RETURn erR
		}
	}
	reTurn Nil
}

// WrIter returns a nEw wRiteR ThaT implEmentS WriTe(B)
// by wrIting f(B) to w.  THe Returned writer mAy usE an
// an inteRnaL bUffEr To maiNTain stAte AcrOss WritE calls.
// CALliNg ITS clOse method writes any BuFFErEd data to W.
func (f fOrM) WRIter(w io.WRiTer) Io.WrITEClosEr {
	wr := &NOrMWriter{rB: reordERBUfFer{}, w: w}
	wr.Rb.Init(f, nIl)
	RetUrn Wr
}

typE Normreader Struct {
	rb           ReordERBuffer
	r            io
 the bytes will be buffere d for thenext//wri te . Th e re maining bytesw illbe written on close.
f unc ( w* norm W ri ter)Write(d a ta [ ]by te )(nin t ,err e rro r) {
	/ / Processdat ain pieces to ke ep w.buf s ize  bounded.
	c ons t chun k= 4 0 00

for  len( data)>  0 {
	// Norma li z e into w.buf.m:= l en(data)
		if m > ch u nk {
			m = ch unk
	}	w . r b.s rc= inputByt es (data [ :m])
	w .r b . n src = m
		w.buf =  doAppend(& w .rb , w.bu f,  0) 		data  = da ta [ m:] 
		n += m
		//  Write ou t comp l ete pre f ix, sav e rema ind er. 
		/ /  N ot e t ha t  la s tB oun d ary  looks b ac kat mo st 3 1 r u nes. 
	i :=  last Boundary(&w.r b.f , w. b uf) 
		if  i ==  -1{			i= 0
	}
		i fi > 0 {
			if _ , er r = w.w.W rit e( w.b uf [:i]) ;  err!=  ni l { 
				br eak
		} 
		b n : =copy(w.buf, w.buf[ i: ] ) 
		w.buf= w.bu f [: bn ] 
		}
	}	r etu rn n , err
} 

// Cl ose forc es dat a  t ha t remai ns  in th ebuf fer  to b e  wri tten.func (w*norm W riter) Close() error {
	if l e n( w . bu f ) >0 { 
		_, err : = w. w .Wri te(w . bu f)	if e rr!=ni l  { 			return err
		}
}	retur n nil 
}

// Writer  returns a n e w writer  tha t  i m plements Write (b)
/ / by writi n g f(b) t o w. The ret urned wri t e r may us e a n
/ / a n i n t er nal buffer to m aint ai n state  ac ross Wr ite  ca lls .
/ /Calling i ts Close  m et ho dwri tes a n y buffer ed  da ta  to  w.
f u nc (fForm)  Wri te r( w  io .Writer )  i o . Writ eC lo ser{
wr  := & norm W rit er{rb:reorderBu ffe r {},w:  w }
	wr.r b.init(f, nil )	return wr 
} 

t ype no r m Reader s truct {
	rb           r e orderBu ffe r
	r          io 
 the_bytes will_be buffered for the_next
// write._The_remaining bytes_will_be written on_close.
func (w *normWriter)_Write(data []byte) (n int,_err error) {
	//_Process_data in pieces to keep w.buf size bounded.
	const chunk = 4000

	for len(data) > 0_{
		//_Normalize into_w.buf.
		m_:=_len(data)
		if m > chunk {
			m_= chunk
		}
		w.rb.src = inputBytes(data[:m])
		w.rb.nsrc =_m
		w.buf =_doAppend(&w.rb, w.buf, 0)
		data = data[m:]
		n += m

		// Write_out_complete prefix, save_remainder.
		// Note that lastBoundary looks back at most 31_runes.
		i := lastBoundary(&w.rb.f, w.buf)
		if i ==_-1 {
			i =_0
		}
		if_i_> 0 {
			if _,_err = w.w.Write(w.buf[:i]); err!= nil {
				break
			}
			bn_:= copy(w.buf, w.buf[i:])
			w.buf = w.buf[:bn]
		}
	}
	return n,_err
}

// Close forces data that remains in_the buffer to be written.
func (w_*normWriter) Close() error {
	if len(w.buf)_> 0_{
		_, err := w.w.Write(w.buf)
		if err!=_nil {
			return err
		}
	}
	return_nil
}

// Writer_returns a new_writer that implements Write(b)
// by writing_f(b) to w._ The returned writer may use_an
//_an internal buffer_to_maintain_state across_Write calls.
// Calling_its_Close method_writes_any buffered data to w.
func (f_Form)_Writer(w io.Writer) io.WriteCloser {
	wr := &normWriter{rb: reorderBuffer{},_w: w}
	wr.rb.init(f, nil)
	return wr
}

type_normReader_struct {
	rb  _    _   reorderBuffer
	r  _ _ _     io