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48 lines
846 B
48 lines
846 B
3 years ago
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package v2
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import (
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"fmt"
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"io"
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)
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// Reads the whole ID3v2 tag from rs
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func ReadV2Tag(rs io.ReadSeeker) (*ID3v2Tag, error) {
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header, err := ReadHeader(rs)
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if err != nil {
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return nil, fmt.Errorf("could not get header: %s", err)
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}
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// collect frames
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var read uint64 = 10 // because already read header
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var frames []Frame
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for {
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if read > uint64(header.Size) {
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break
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}
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frame, r, err := ReadNextFrame(rs, header)
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if err == ErrGotPadding || err == ErrBiggerThanSize {
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break
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}
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if err != nil {
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return nil, fmt.Errorf("could not read frame: %s", err)
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}
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read += r
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frames = append(frames, frame)
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}
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// create a map from collected frames
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framesMp := make(map[string]Frame)
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for _, frame := range frames {
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framesMp[frame.Header.ID] = frame
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}
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return &ID3v2Tag{
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Header: header,
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Frames: framesMp,
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}, nil
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}
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