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// Copyright 2015, Joe Tsai. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE.md file.
// Package flate implements the DEFLATE compressed data format,
// described in RFC 1951.
package flate
import (
"fmt"
"github.com/dsnet/compress/internal/errors"
)
const (
maxHistSize = 1 << 15
endBlockSym = 256
)
func errorf(c int, f string, a ...interface{}) error {
return errors.Error{Code: c, Pkg: "flate", Msg: fmt.Sprintf(f, a...)}
}
func panicf(c int, f string, a ...interface{}) {
errors.Panic(errorf(c, f, a...))
}
// errWrap converts a lower-level errors.Error to be one from this package.
// The replaceCode passed in will be used to replace the code for any errors
// with the errors.Invalid code.
//
// For the Reader, set this to errors.Corrupted.
// For the Writer, set this to errors.Internal.
func errWrap(err error, replaceCode int) error {
if cerr, ok := err.(errors.Error); ok {
if errors.IsInvalid(cerr) {
cerr.Code = replaceCode
}
err = errorf(cerr.Code, "%s", cerr.Msg)
}
return err
}
var errClosed = errorf(errors.Closed, "")
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