46 lines
616 B
Go
46 lines
616 B
Go
package parser
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import (
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"io"
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)
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type limitReader struct {
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io.Reader
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remain int
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}
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func newLimitReader(r io.Reader, limit int) *limitReader {
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return &limitReader{
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Reader: r,
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remain: limit,
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}
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}
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func (r *limitReader) Read(b []byte) (int, error) {
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if r.remain == 0 {
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return 0, io.EOF
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}
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if len(b) > r.remain {
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b = b[:r.remain]
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}
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n, err := r.Reader.Read(b)
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r.remain -= n
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return n, err
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}
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func (r *limitReader) Close() error {
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if r.remain > 0 {
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b := make([]byte, 10240)
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for {
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_, err := r.Read(b)
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if err == io.EOF {
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break
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}
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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