22 lines
316 B
Go
22 lines
316 B
Go
package file
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import (
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"fmt"
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"os"
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)
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type LimitedWriter struct {
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File *os.File
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Limit int64
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n int64
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}
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func (lw *LimitedWriter) Write(p []byte) (n int, err error) {
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if lw.n+int64(len(p)) > lw.Limit {
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return 0, fmt.Errorf("output limit exceeded")
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}
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n, err = lw.File.Write(p)
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lw.n += int64(n)
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return
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}
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