234 lines
3.5 KiB
Go
234 lines
3.5 KiB
Go
// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package keys
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import (
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"bytes"
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"io"
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"time"
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)
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type encoder struct {
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w *writer
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}
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// encode encodes an interface using the unicode collation algorithm.
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func encode(items ...interface{}) []byte {
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b := &bytes.Buffer{}
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newEncoder(b).Encode(items...)
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return b.Bytes()
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}
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func newEncoder(w io.Writer) *encoder {
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return &encoder{
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w: newWriter(w),
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}
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}
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func (e *encoder) Encode(items ...interface{}) {
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for _, item := range items {
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switch value := item.(type) {
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case nil:
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e.w.write(bNIL)
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e.w.write(bEND)
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case bool:
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e.w.write(bVAL)
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if value {
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e.w.write(bVAL)
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}
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e.w.write(bEND)
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case time.Time:
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e.w.write(bTME)
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e.w.write(value)
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e.w.write(bEND)
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case []byte:
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e.w.write(bSTR)
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e.w.write(value)
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e.w.write(bEND)
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e.w.write(bEND)
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case string:
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if value == Ignore {
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break
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}
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if value == Prefix {
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e.w.write(bPRE)
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e.w.write(bEND)
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break
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}
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if value == Suffix {
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e.w.write(bSUF)
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e.w.write(bEND)
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break
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}
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e.w.write(bSTR)
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e.w.write(value)
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e.w.write(bEND)
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e.w.write(bEND)
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case float32, float64:
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e.w.write(value)
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e.w.write(bEND)
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case int, int8, int16, int32, int64:
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e.w.write(value)
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e.w.write(bEND)
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case uint, uint8, uint16, uint32, uint64:
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e.w.write(value)
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e.w.write(bEND)
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case []time.Time:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []bool:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []string:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []int:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []int8:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []int16:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []int32:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []int64:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []uint:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []uint16:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []uint32:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []uint64:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []float32:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []float64:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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case []interface{}:
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e.w.write(bARR)
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for _, val := range value {
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e.Encode(val)
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}
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e.w.write(bEND)
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}
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}
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}
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