yaole
22 lines
433 B
Go
22 lines
433 B
Go
package grand
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import (
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"io"
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)
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// MustRead tries to fill p with len(p) bytes from r. If it haven't read enough bytes, then an
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// error returns. So if nil error returns, then p must have read len(p) bytes. Otherwise, only
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// p[:n] are read from r.
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func MustRead(r io.Reader, p []byte) (int, error) {
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n := 0
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for len(p) > 0 {
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m, err := r.Read(p)
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if err != nil {
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return n + m, err
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}
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p = p[m:]
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n += m
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}
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return n, nil
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}
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