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util.go
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util.go
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// Copyright 2017 Ross Peoples
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"unsafe"
)
// ZeroByte represents a single zero byte in a byte slice.
var ZeroByte = []byte{0}
var suffixForKeysUsingPrefix = "*_MYDIS_WITHPREFIX"
var suffixForLocks = "*_MYDIS_LOCK"
// MapStringToMapBytes converts a map[string]string to map[string][]byte.
func MapStringToMapBytes(h map[string]string) map[string][]byte {
m := map[string][]byte{}
if h == nil {
return m
}
for k, v := range h {
m[k] = StringToBytes(v)
}
return m
}
// MapBoolToMapBytes converts a map[string]string to map[string][]byte.
func MapBoolToMapBytes(h map[string]bool) map[string][]byte {
m := map[string][]byte{}
if h == nil {
return m
}
for k, v := range h {
m[k] = NewValue(v).b
}
return m
}
// MapIntToMapBytes converts a map[string]string to map[string][]byte.
func MapIntToMapBytes(h map[string]int64) map[string][]byte {
m := map[string][]byte{}
if h == nil {
return m
}
for k, v := range h {
m[k] = NewValue(v).b
}
return m
}
// MapFloatToMapBytes converts a map[string]string to map[string][]byte.
func MapFloatToMapBytes(h map[string]float64) map[string][]byte {
m := map[string][]byte{}
if h == nil {
return m
}
for k, v := range h {
m[k] = NewValue(v).b
}
return m
}
// MapValueToMapBytes converts a map[string]Value to map[string][]byte.
func MapValueToMapBytes(h map[string]Value) map[string][]byte {
m := map[string][]byte{}
if h == nil {
return m
}
for k, v := range h {
m[k] = v.b
}
return m
}
// BytesToString efficiently converts a byte slice to a string without allocating any additional memory.
func BytesToString(b []byte) string {
p := unsafe.Pointer(&b)
return *(*string)(p)
}
// StringToBytes efficiently converts a string to a byte slice without allocating any additional memory.
func StringToBytes(s string) []byte {
p := unsafe.Pointer(&s)
return *(*[]byte)(p)
}