38 lines
872 B
Go
38 lines
872 B
Go
package common
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import (
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"io"
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"path/filepath"
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"strings"
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)
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type DecoderParams struct {
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Reader io.ReadSeeker // required
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Extension string // required, source extension, eg. ".mp3"
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FilePath string // optional, source file path
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}
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type NewDecoderFunc func(p *DecoderParams) Decoder
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type decoderItem struct {
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noop bool
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decoder NewDecoderFunc
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}
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var DecoderRegistry = make(map[string][]decoderItem)
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func RegisterDecoder(ext string, noop bool, dispatchFunc NewDecoderFunc) {
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DecoderRegistry[ext] = append(DecoderRegistry[ext],
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decoderItem{noop: noop, decoder: dispatchFunc})
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}
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func GetDecoder(filename string, skipNoop bool) (rs []NewDecoderFunc) {
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ext := strings.ToLower(strings.TrimLeft(filepath.Ext(filename), "."))
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for _, dec := range DecoderRegistry[ext] {
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if skipNoop && dec.noop {
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continue
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}
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rs = append(rs, dec.decoder)
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}
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return
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}
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