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https://git.mirrors.martin98.com/https://github.com/ceph/ceph-csi.git
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91774fc936
Uses github.com/libopenstorage/secrets to communicate with Vault. This removes the need for maintaining our own limited Vault APIs. By adding the new dependency, several other packages got updated in the process. Unused indirect dependencies have been removed from go.mod. Signed-off-by: Niels de Vos <ndevos@redhat.com>
95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !purego,!appengine
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package strs
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import (
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"unsafe"
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pref "google.golang.org/protobuf/reflect/protoreflect"
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)
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type (
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stringHeader struct {
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Data unsafe.Pointer
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Len int
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}
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sliceHeader struct {
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Data unsafe.Pointer
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Len int
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Cap int
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}
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)
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// UnsafeString returns an unsafe string reference of b.
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// The caller must treat the input slice as immutable.
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//
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// WARNING: Use carefully. The returned result must not leak to the end user
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// unless the input slice is provably immutable.
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func UnsafeString(b []byte) (s string) {
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src := (*sliceHeader)(unsafe.Pointer(&b))
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dst := (*stringHeader)(unsafe.Pointer(&s))
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dst.Data = src.Data
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dst.Len = src.Len
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return s
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}
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// UnsafeBytes returns an unsafe bytes slice reference of s.
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// The caller must treat returned slice as immutable.
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//
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// WARNING: Use carefully. The returned result must not leak to the end user.
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func UnsafeBytes(s string) (b []byte) {
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src := (*stringHeader)(unsafe.Pointer(&s))
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dst := (*sliceHeader)(unsafe.Pointer(&b))
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dst.Data = src.Data
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dst.Len = src.Len
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dst.Cap = src.Len
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return b
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}
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// Builder builds a set of strings with shared lifetime.
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// This differs from strings.Builder, which is for building a single string.
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type Builder struct {
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buf []byte
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}
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// AppendFullName is equivalent to protoreflect.FullName.Append,
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// but optimized for large batches where each name has a shared lifetime.
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func (sb *Builder) AppendFullName(prefix pref.FullName, name pref.Name) pref.FullName {
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n := len(prefix) + len(".") + len(name)
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if len(prefix) == 0 {
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n -= len(".")
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}
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sb.grow(n)
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sb.buf = append(sb.buf, prefix...)
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sb.buf = append(sb.buf, '.')
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sb.buf = append(sb.buf, name...)
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return pref.FullName(sb.last(n))
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}
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// MakeString is equivalent to string(b), but optimized for large batches
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// with a shared lifetime.
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func (sb *Builder) MakeString(b []byte) string {
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sb.grow(len(b))
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sb.buf = append(sb.buf, b...)
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return sb.last(len(b))
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}
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func (sb *Builder) grow(n int) {
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if cap(sb.buf)-len(sb.buf) >= n {
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return
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}
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// Unlike strings.Builder, we do not need to copy over the contents
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// of the old buffer since our builder provides no API for
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// retrieving previously created strings.
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sb.buf = make([]byte, 2*(cap(sb.buf)+n))
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}
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func (sb *Builder) last(n int) string {
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return UnsafeString(sb.buf[len(sb.buf)-n:])
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}
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