// Users should either catch ErrShortDst and allow dst to grow or have dst be at
// least of size MaxTransformChunkSize to be guaranteed of progress.
func (f Form) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
	// Cap the maximum number of src bytes to check.
	b := src
	eof := atEOF
	if ns := len(dst); ns < len(b) {
		err = transform.ErrShortDst
		eof = false
		b = b[:ns]
	}

// Users should either catch ErrShortDst and allow dst to grow or have dst be at
// least of size MaxTransformChunkSize to be guaranteed of progress.
func (f Form) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
	// Cap the maximum number of src bytes to check.
	b := src
	eof := atEOF
	if ns := len(dst); ns < len(b) {
		err = transform.ErrShortDst
		eof = false
		b = b[:ns]
	}

package transform // import "golang.org/x/text/transform"

import (
	"bytes"
	"errors"
	"io"
	"unicode/utf8"
)

var (
	// ErrShortDst means that the destination buffer was too short to
	// receive all of the transformed bytes.
	ErrShortDst = errors.New("transform: short destination buffer")

	// ErrShortSrc means that the source buffer has insufficient data to
	// complete the transformation.

package transform // import "golang.org/x/text/transform"

import (
	"bytes"
	"errors"
	"io"
	"unicode/utf8"
)

var (
	// ErrShortDst means that the destination buffer was too short to
	// receive all of the transformed bytes.
	ErrShortDst = errors.New("transform: short destination buffer")

	// ErrShortSrc means that the source buffer has insufficient data to
	// complete the transformation.

	if len(c.dst)-c.pDst < len(b) {
		c.err = transform.ErrShortDst
		return false
	}
	// This loop is faster than using copy.
	for _, ch := range b {
		c.dst[c.pDst] = ch
		c.pDst++
	}
	return true
}

// writeString writes the given string to dst.
func (c *context) writeString(s string) bool {
	if len(c.dst)-c.pDst < len(s) {
		c.err = transform.ErrShortDst
		return false
	}

// needs to be reset between uses.
func (t *Transformer) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
	if len(dst) < len(src) {
		src = src[:len(dst)]
		atEOF = false
		err = transform.ErrShortDst
	}
	n, err1 := t.Span(src, atEOF)
	copy(dst, src[:n])
	if err == nil || err1 != nil && err1 != transform.ErrShortSrc {
		err = err1
	}
	return n, n, err
}

	// may need to write atomically for any Form. Making a destination buffer at
	// least this size ensures that Transform can always make progress and that
	// the user does not need to grow the buffer on an ErrShortDst.
	MaxTransformChunkSize = 35 + maxNonStarters*4
)

var ccc = [55]uint8{
	0, 1, 7, 8, 9, 10, 11, 12,
	13, 14, 15, 16, 17, 18, 19, 20,
	21, 22, 23, 24, 25, 26, 27, 28,
	29, 30, 31, 32, 33, 34, 35, 36,

	// may need to write atomically for any Form. Making a destination buffer at
	// least this size ensures that Transform can always make progress and that
	// the user does not need to grow the buffer on an ErrShortDst.
	MaxTransformChunkSize = 35 + maxNonStarters*4
)

var ccc = [55]uint8{
	0, 1, 7, 8, 9, 10, 11, 12,
	13, 14, 15, 16, 17, 18, 19, 20,
	21, 22, 23, 24, 25, 26, 27, 28,
	29, 30, 31, 32, 33, 34, 35, 36,

	// may need to write atomically for any Form. Making a destination buffer at
	// least this size ensures that Transform can always make progress and that
	// the user does not need to grow the buffer on an ErrShortDst.
	MaxTransformChunkSize = 35 + maxNonStarters*4
)

var ccc = [56]uint8{
	0, 1, 6, 7, 8, 9, 10, 11,
	12, 13, 14, 15, 16, 17, 18, 19,
	20, 21, 22, 23, 24, 25, 26, 27,
	28, 29, 30, 31, 32, 33, 34, 35,

	// may need to write atomically for any Form. Making a destination buffer at
	// least this size ensures that Transform can always make progress and that
	// the user does not need to grow the buffer on an ErrShortDst.
	MaxTransformChunkSize = 35 + maxNonStarters*4
)

var ccc = [55]uint8{
	0, 1, 7, 8, 9, 10, 11, 12,
	13, 14, 15, 16, 17, 18, 19, 20,
	21, 22, 23, 24, 25, 26, 27, 28,
	29, 30, 31, 32, 33, 34, 35, 36,