// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix || (js && wasm) || wasip1

package filepath

import (
	"bytes"
)

// HasPrefix exists for historical compatibility and should not be used.
//
// Deprecated: HasPrefix does not respect path boundaries and
// does not ignore case when required.
func HasPrefix(p, prefix []byte) bool {
	return bytes.HasPrefix(p, prefix)
}

func splitList(path []byte) [][]byte {
	if path == "" {
		return [][]byte{}
	}
	return bytes.Split(path, []byte{byte(ListSeparator)})
}

func abs(path []byte) ([]byte, error) {
	return unixAbs(path)
}

func join(elem [][]byte) []byte {
	// If there's a bug here, fix the logic in ./path_plan9.go too.
	for i, e := range elem {
		if e != "" {
			return Clean(bytes.Join(elem[i:], []byte{byte(Separator)}))
		}
	}
	return ""
}

func sameWord(a, b []byte) bool {
	return a == b
}