74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
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// 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 fncs
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import (
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"context"
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)
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func purge(ctx context.Context, args ...interface{}) (interface{}, error) {
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if arr, ok := ensureSlice(args[0]); ok {
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arr = copySlice(arr)
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for i := len(arr) - 1; i >= 0; i-- {
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if arr[i] == nil {
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copy(arr[i:], arr[i+1:])
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arr[len(arr)-1] = nil
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arr = arr[:len(arr)-1]
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}
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}
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return arr, nil
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}
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if args[0] == nil {
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return nil, nil
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}
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return args[0], nil
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}
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func purgeIf(ctx context.Context, args ...interface{}) (interface{}, error) {
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if arr, ok := ensureSlice(args[0]); ok {
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arr = copySlice(arr)
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for i := len(arr) - 1; i >= 0; i-- {
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if arr[i] == args[1] {
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copy(arr[i:], arr[i+1:])
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arr[len(arr)-1] = nil
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arr = arr[:len(arr)-1]
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}
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}
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return arr, nil
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}
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if args[0] == args[1] {
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return nil, nil
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}
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return args[0], nil
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}
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func purgeNot(ctx context.Context, args ...interface{}) (interface{}, error) {
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if arr, ok := ensureSlice(args[0]); ok {
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arr = copySlice(arr)
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for i := len(arr) - 1; i >= 0; i-- {
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if arr[i] != args[1] {
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copy(arr[i:], arr[i+1:])
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arr[len(arr)-1] = nil
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arr = arr[:len(arr)-1]
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}
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}
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return arr, nil
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}
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if args[0] != args[1] {
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return nil, nil
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}
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return args[0], nil
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}
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