45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
// Copyright © 2023 OpenIM SDK. All rights reserved.
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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 file
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import (
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"io"
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)
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func NewProgressReader(r io.Reader, fn func(current int64)) io.Reader {
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if r == nil || fn == nil {
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return r
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}
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return &Reader{
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r: r,
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fn: fn,
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}
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}
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type Reader struct {
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r io.Reader
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read int64
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fn func(current int64)
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}
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func (r *Reader) Read(p []byte) (n int, err error) {
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n, err = r.r.Read(p)
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if err == nil && n > 0 {
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r.read += int64(n)
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r.fn(r.read)
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}
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return n, err
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}
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